[20. Apr 2010] Ayam-1.17:
=========================
Bug Fixes:
o Tcl errors when Ayam is started with object listbox activated (SF 2872817)
o <Tab> key does not work after <Ctrl+l> (SF 2869550)
o the FaceConnect modelling operation of the SDNPatch plugin is now
  more robust (works with perpendicular faces) (SF 2872818)
o PLY export of SDNPatch objects is not working (SF 2886961)
o the KnotEditor of the SDNPatch plugin now fetches old knot values
  and sets the new value for the correct edge (SF 2971502)
o Script objects with own, script controlled, property GUIs fail to load
  properly from scene files (initial parameters are not set), and it is
  not possible to have multiple copies of them (SF 2971501)
o crash when first object in a Trim object hierarchy is not a NPatch
  (and does not provide an NPatch either) (SF 2876536)
o reading of Select objects written on Unix using Ayam on Win32 (SF 2881570)
o crash when ExtrNP object is used to cut in v parametric dimension
  (SF 2882634)
o tesselation omitting transformation attributes (SF 2889510)
o crash in Paraboloid to NURBS conversion (SF 2899377)
o wrong patches generated by Sphere to NURBS conversion (SF 2899379)
o ACurve approximation failing in symmetric mode (SF 2936133)
o rotate about for selected points (SF 2971477)
o scale 1D with grids may lead to broken transformation (SF 2981861)

Modelling:
o added object type "OffsetNP" for the creation of offset surfaces
o in the point selection action, points may now also be deselected using
  the <Shift> key in conjunction with the mouse drag operation
o MetaObj user controlled expressions now also run in the safe interpreter
o View objects now accept a NURB patch object as child and map the
  background image on that (instead of fitting the image to the window)
o the tesselation GUI can now work with complex levels of objects,
  e.g. the cactus from the example scenes (which is a complex hierarchy
  of Levels, Cones, Spheres, and a Skin) can now be tesselated easily
  into one PolyMesh object with just one application of the tesselation GUI
o added support for new data types (g for float[2], n for normal, and
  p for point) to PV tags
o enhanced NURBS and PolyMesh tesselation supports for PV tags (e.g. added
  support for vertex colors and normals)
o the tesselation GUI now also has an option to directly control continuous
  updates
o ACurve objects knots for closed curves are now more balanced delivering
  symmetric curves for symmetric data point configurations automatically
o improved section mode offset curves for internal multiple points
o added modelling actions for scaling/stretching about a marked point
o keyboard shortcuts for rotate/scale about follow a new scheme, where
  first the basic operation has to be selected (e.g. <r> for rotate),
  then, with a second keypress (<a>), rotate about mark is enabled
o the marked point for the "about the mark" modelling actions now survives
  much more view attribute changes, e.g. zooming; in addition, the mark,
  once set, may be re-used in following actions by pressing <Return>
  in the intermediate mark setting action
o added setting the mark to the center of gravity of all selected
  objects or selected points in the intermediate mark setting action
  (shortcuts <c> and <C>, respectively)
o added way to constrain the move object/points action to one axis;
  new keyboard shortcuts: <mx>, <my>, and <mz>
o scale 1D actions are now invoked in a similar scheme as the constrained
  move actions, the old shortcuts <x>, <y>, and <z> are gone, new shortcuts
  are <sx>, <sy>, and <sz>

GUI:
o improved speed of focus changes between internal view 3 and the tree view
o improved initial pane layout (also in use after switching from
  (Floating Windows to Single Window GUI mode)
o added mnemonics to tree and object listbox context menus
o fixed main menu mnemonics clashes
o the property GUIs of many objects are now initialized on demand, not
  already on application startup, to increase startup speed and decrease
  initial memory footprint
o if scene files without root/views are loaded (via File/Open, but not via
  File/Insert), saving of this scene now automatically omits the root/views
  of the current scene
o added keyboard shortcuts to manipulate the selection and walk the object
  hierarchy from view windows (by default using a modifier key in conjunction
  with the numeric keypad cursor keys; the modifier key depends on the
  platform: defaults are "Control" (on UNIX/X11), "Command" (on Aqua) and
  "Windows" (on Win32)
o added keyboard shortcut to reset a views camera (by default usind a
  modifier (as above) plus numeric keypad "5")
o added a second set of zoom hotkeys to views (for those without numeric
  keypad) by default using "+"/"-"
o added plugin defined modelling actions
o added keyboard shortcut to repeat a modelling tool with parameters set
  (<Ctrl+T>)

Plugins:
o switched AyCSG plugin to OpenCSG 1.3.0 for important multi view fixes
o added AyCSG preference option "OffscreenType" to switch between
  PBuffer and FBO offscreen rendering types
o the AyCSG continuous CSG rendering state is now conveyed to the
  user using a red colored view menu icon
o SDNPatch operations (e.g. FaceMerge) are now more robust
o added Length and Scale options to SDNPatch FaceExtrude operation
o added SDNPatch revert operation (that reverts all edges)
o added SDNPatch merge operation
o added script to create a tiled cube to SDNPatch plugin

Import/Export:
o X3D import of IndexedFaceSet and similar elements now fully supports
  vertex and face colors, normals, and texture coordinates
o Wavefront OBJ import now supports polyline elements (l)
o Wavefront OBJ import now supports line continuation ("\" characters)
o import and export of texture coordinates now uses one PV tag of
  default name "st" and type "g" (float[2])

Scripts/Scripting Interface:
o aytest script tests can now be stopped
o the create callbacks of NCurve, NCircle, ICurve, ACurve, NPatch, and
  PolyMesh objects now allow much more parameters to control the initially
  created object (e.g. one may now specify control points and knot vectors
  directly on object creation); for the first time it is also possible to
  create non empty PolyMesh objects this way

Documentation/Example Files:
o added Doxygen documentation for main Ayam headers


[22. Sep 2009] Ayam-1.16:
=========================
Bug Fixes:
o closing all view windows (for File/New, File/Open) Tcl error (SF 2404512)
o AutoResize option (multi window GUI mode) Tcl error (SF 2404523)
o mouse wheel view zoom binding (external views/Win32) Tcl error (SF 2404503)
o Clone object update after undo/redo (SF 2418119)
o re-generating caps/bevels after undo/redo (SF 2418121)
o X3D export of instances (SF 2418150)
o X3D export of cones and cylinders (SF 2418152)
o X3D import of spheres, clones, and cylinders (SF 2418155)
o improved robustness of skin creation (making curves compatible)
o pick binding fires in any modeling action when Control key
  is held down (SF 2552310)
o Tcl error in property GUI when text is entered in a numeric entry and
  the "/2" "*2" buttons are used (SF 2565110)
o automatic instancing with ACurve objects (SF 2619643)
o direct point edit dialog displaying <Enter> keys in entry (SF 2636606)
o lost focus when <Enter> key is used in dynamic property GUI (SF 2637980)
o caps of asymmetrically scaled sweeps (SF 2637630)
o transformation attributes of objects provided through Level objects
  (SF 2658507)
o transformations of mirrored clones (that are transformed themselves)
  (SF 2658523)
o <Enter> keypresses appearing in direct point editing GUI entries
  on Win32 (SF 2726259)
o Tcl error when applying Camera property of Camera object (SF 2779315)
o crash when Sweep notification fails (SF 2793037)
o Swung surfaces with rational trajectory curves (SF 2793039)
o tesselation GUI destroying tags (SF 2807895)
o PolyMesh optimization crashing for very simple PolyMesh objects (SF 2808825)
o "estlenNC" crashing for illegal parameters and curves (SF 2818974)
o "estlenNC" crashing for curves of order 2 (SF 2819090)
o preferences dialog now also warns after "ToolBoxTrans" setting changes,
  that a restart is necessary
o undo/redo do not maintain view mode icons (SF 2860778)
o tesselation GUI crashing for empty text objects (SF 2876598)

GUI:
o switching the current level in the object tree via cursor keys now
  always scrolls the widget accordingly
o the tree widget is now also scrolled properly when the tree is rebuilt
o added keyboard shortcuts to pan view windows (<Shift>+<Cursor> keys)
o added keyboard shortcuts to escape from console (<Esc> key)
o improved error reporting of RenderMan renderers directly called from Ayam
o improved keyboard navigation in select shader, add RiOption/RiAttribute,
  and ambiguous select dialogs
o improved focus handling of view windows and various dialog windows
o added hotkeys for view drawing mode cycling (<Ctrl+PgUp>, <Ctrl+PgDown>)
o fixed many clashes of shortcuts; e.g. using <Ctrl+s> in internal views now
  does the expected (saving the scene, not switching to scale modelling action)
o add pinstripe background to show shortcuts dialog window
o zooming views (and also panning) via keyboard do not fill up the
  undo buffer
o added mnemonics for various main menu entries

Modelling:
o added object type "Trim" (to directly trim tool objects like e.g. a sweep)
o ConcatNC objects now accepts lists of provided curves
o Gordon objects now accepts lists of provided curves
o Select objects now support selection of lists and ranges of indices as
  well as multiple parameter objects
o ICurves are completely revamped: "Mode" parameter is gone (now auto-
  selected by "Order"), "IParam" is replaced by "SDLen" and "EDLen",
  "Closed" is replaced by "Type"; new parameter "Derivatives" allows to
  specify own end derivatives; new parameter "ParamType" allows to select
  a parameterisation (chordal or centripetal), knot averaging now used
  for all modes, robustness wrt. double data points improved
o NURBS curves now support two new knot types ("Chordal" and "Centripetal")
o added "ConcatNP" object type to concatenate NURBS patches
o "Extrude" objects dimensions swapped to improve tesselation quality
  when bevels are present
o "Instance" objects now support the "RP" tag type, and, if the
  "Transformations" property is removed, do not provide objects with
  an own set of transformation attributes (to ease hierarchy building
  with e.g. "ExtrNC"/"ExtrNP" objects)
o STESS can now shade trimmed NURBS patches
o selected points of NCurve and NPatch objects now survive undo/redo
o added experimental support for Subdivision NURBS via SDNPatch plugin

Import/Export:
o X3D export of spheres is now more forgiving wrt. simple vs. non simple
  spheres

Scripts/Scripting Interface:
o added example script "useaqsisapp.tcl" that prepares Ayam to use Aqsis
  from the application directory structure on Mac OS X
o added example script "usepixie.tcl" that prepares Ayam to use Pixie
  from the /Library/pixie directory structure on Mac OS X
o added helper script "colfocus.tcl" that switches the focus ring of
  important widgets to a more visible color (for SingleWindow GUI mode)
o scripts in "Script" objects and BNS/ANS tags now run in a safe interpreter
o "Script" object script execution environment has been improved to allow
  more complex scripts (that traverse the scene or use the clipboard)
o many scripting interface commands have been renamed to fit in a general
  naming scheme "verbObject", e.g. "revert" has been renamed to "revertC",
  "swapUV" to "swapuvS" etc.; the new "oldnames.tcl" script provides an
  exhaustive list of the renamed commands, and if run, establishes aliases
  to make scripts using the old names work again
o added script "aytest.tcl" to test some aspects of Ayam
o startup scripts may now be specified without full (absolute) path
  (e.g. Preferences/Scripts may now look like this "colfocus;loadayslx")

Build Support:
o improved some error checking/messages in the "ayamConf.tcl" Makefile
  configuration GUI

Renderer Support:
o updated the "ayslo3d" shader parsing plugin for incompatible changes
  in 3Delight 8.5

Documentation/Example Files:
o improved layout and updated the content of the reference card, in addition,
  the document is now available as PDF

Platform Support:
IRIX:
o there is now a official build for the IRIX platform again


[4. Dec 2008] Ayam-1.15.1:
==========================
Bug Fixes:
o tool box list can not be configured via ayamrc file (SF 2316995)
o X3D export of Clone objects (SF 2340057)
o converted/provided ExtrNP object transformations (SF 2340322)
o X3D export of rational NURBS patches (SF 2351988)
o X3D import of rational NURBS curves (SF 2354967)
o X3D import of swept/swung surfaces (SF 2354970)
o continuous CSG drawing (SF 2377466)
o add tags dialog error (tag type not registered) (SF 2377512)
o creating objects does not always select last object (SF 2389926)


[12. Nov 2008] Ayam-1.15:
=========================
Bug Fixes:
o aycsg plugin GUI code for internal views (SF 1943164)
o RIB export of Instances in CSG hierarchies (SF 1953633)
o X3D export of trim curves crashes (SF 1945924)
o Esc key binding of About requester (SF 1964809)
o Hide/Show keyboard shortcuts in view windows (SF 1964807)
o reset of property GUIs when opened via keyboard (SF 1988972)
o view mode icons when settings are changed via property GUI (SF 1989149)
o using compressed TIFF image files as view background (SF 1991716)
o <Shift-Home> Tcl error if first object is selected (SF 2022397)
o <Shift-Home> omitting the first object in sub-levels (SF 2022398)
o ExtrNP objects missing in exported RIB files (SF 2021241)
o crash when complete notify is enabled (SF 2022393)
o Tcl errors when keyboard shortcuts are used to display unavailable
  properties (SF 2023854)
o Script objects adding newline characters upon apply (SF 2027027)
o Memory leak in ExtrNP notification (SF 2135504)
o broken complete notification for center points action (SF 2135494)
o menus with images do not open on certain X11 servers (SF 2144110)
o setting drawing mode icon when mode is changed via menu (SF 2268296)

GUI:
o added plugin "aydnd.tcl" that enables inter-application drag-and-drop
  on Win32 and Unix/X11 with the help of tkdnd
o using the "Esc" key (break action) in view windows now also resets
  the keyboard focus to the main window, if the Esc key is held down longer
  or pressed twice
o pressing <Esc> twice in the tree view clears the object selection (and
  property GUI) and switches the current level to the top level
o improved key bindings for property GUI elements used in dialogs
o improved focus management for property GUI updates
o established keyboard menu traversal

Modelling:
o added object type "ACurve" (for approximating curves)
o improved bevels and offset curves (in bevel mode) of open curves
o improved offset curve fidelity (in section mode)
o added parameter "Relative" to ExtrNP/ExtrNC objects
o NCircle objects now accept reverse parameters to create reverted circles
o added 3D offset mode ("Bevel3D") to offset curve creation
o improved robustness of curve splitting (also essential for Gordon caps)
o view type cycling (via PageUp/Down) now keeps the camera aim point
o the GLU NURBS tesselation now preserves texture coordinates and vertex
  colors delivered by PV tags
o ExtrNC objects can now also extract a middle axis curve (for re-engineering
  purposes, e.g. extracting a spine from a former sweep)
o the creation of ExtrNC, ExtrNP, and OffsetNC objects now automatically
  creates an instance of the currently selected object first

Import/Export:
o added support for true instances (via USE/DEF) to X3D export
o improved robustness of Wavefront OBJ import

Scripts/Scripting Interface:
o added example script "zdialog.tcl" that switches all internal file dialogs
  to use zenity (from the Gnome project)
o added example script "kdialog.tcl" that switches all internal file dialogs
  to use kdialog (from the KDE project)
o added script "bgconvert.tcl" that allows to use Ayam as a background
  3D file format converter from a UNIX shell
o script objects now support saving of individual sets of parameters
o improved error reporting for Script objects
o add helper command to estimate the length of NURBS curves "estlenNC"
o replaced "NS" tag type by "BNS" (before notify) and "ANS" (after notify)
  tag types

Platform Support:
Win32:
o the official build now uses Tcl/Tk in version 8.4.19

Documentation/Example Files:
o added example scene "multicolcsg.ay" that demonstrates how "Primitive"
  level objects are to be used


[4. Apr 2008] Ayam 1.14:
========================
Bug Fixes:
 - X3D export of NURBS patches (row/column major order) (SF 1804056)
 - X3D export of NURBS patches (trimmed state) (SF 1804054)
 - X3D transformations of NurbsSweptSurface child nodes (SF 1813320)
 - STESS drawing mode crashing for patches with trim loops (SF 1808296)
 - saved ExtrNC objects failing to load (SF 1814644)
 - redo missing states with selection changes (SF 1828494)
 - sweeps with first section -1,0,0 (SF 1837720)
 - direct rendering of scenes with spaces in filename or path (SF 1840995)
 - autofocus after preferences window was closed (SF 1846422)
 - autofocus after implicit import/export (SF 1847870)
 - keyboard shortcut to switch drawing/shading (SF 1894024)
 - RIB export of Clones with and in CSG hierarchies (SF 1925224)

GUI:
o added option to keep the current selection when creating new objects, by
  simply holding down the <Control> key
o added hidden preference setting to control the zoom factor of the
  mouse wheel ("WheelZoom")
o added hidden preference settings to control the polygon offset parameters
  for the "Shade&Draw" display mode ("PolyOffset0" and "PolyOffset1")
o avoid stealing the focus from the console on application startup
o added "Select All"/"Select None" entries to edit menu (mainly to teach the
  corresponding keyboard shortcuts)
o all dialogs may now be cancelled with the <Escape> key
o closing dialogs using the window decoration is now safer wrt. AutoFocus
o improved focus handling of property canvas
o added context sensitive help launcher (<F1> key) to all import and
  export option windows and the preferences dialog
o added preference option to switch Ayam to a single toplevel window
  application; in SingleWindow mode, there are internal views and an
  internal toolbar, more floating view windows can be created as usual
o added icon based modelling action display to view window menu bar
o added saving of main window state normal/zoomed (maximized) to the
  ayamrc file
o the iconification state of view windows is now saved with scene files
o several main preference settings are not displayed in the preferences
  editor on platforms/in configurations where they would not be used
  anyway, e.g. "TwmCompat" on Win32
o added "SavePaneLayout" tag type to store the pane configuration of the
  main window in scene files
o added hidden preference setting "PaneMargins" that controls individual
  safety margins for all panes (lest they obscure other vital parts of
  the GUI as e.g. the main menu bar)
o the main preference settings "ListTypes", "MarkHidden", "LoadEnv",
  and "NewLoadsEnv" are now hidden preference settings
o renamed hidden preference settings "PrepDiaCap" to "FixDialogTitles" and
  "Wpcliptosel" to "WarnPropPasteToSel"
o added hidden preference setting "ShiftTab" that let users define the
  keysym created by pressing shift and tab
o added hidden preference setting "FixImageButtons" that enables a
  work-around for "stuck" image buttons in the toolbox
o the operations that can be undone/redone are now also displayed in the
  corresponding main menu entries
o the about dialog has now a "CopyClipboard" button that makes it more
  simple to copy the relevant parts of the Ayam configuration for e.g.
  bug reports
o added view window keyboard shortcuts to cycle through the view types
  (<PageUp>/<PageDown>)
o added secondary view window keyboard shortcuts for important functions as
  e.g. "zoom to object" (mainly for internal views in single window GUI mode)
o reorganized edit, create, and tools menus

Modelling:
o added object type "Swing" (for rotational sweeps/swung surfaces)
o added object type "Select" to select one object from a list of provided
  objects
o added object type "ExtrNP" (similar to "ExtrNC", but extracts patches)
o added object type "OffsetNC" to create offset curves
o added NCInfo balloon (that displays more info on generated curves, similar
  to NPInfo)
o added tolerance parameter and checking for "remKnNC" (knot removal) tool
  and scripting interface command
o made side cap creation of Revolve objects more robust wrt. the cross
  section curve direction
o added "undo rewind" command
o resolving of instances and automatic instances are now selection aware

Import/Export:
o import NurbsSwungSurface elements as Swing objects from X3D files
o import of NurbsSurface texture coordinates from X3D files
o added "TopLevelLayers" X3D export option
o added "WriteParametrics" X3D export option (to control saving Revolve,
  Extrude, Sweep, and Swing objects as NurbsSweptSurface/NurbsSwungSurface
  nodes or as plain NURBS)
o X3D export may now be cancelled
o DXF export may now be cancelled

Renderer Support:
o reworked shader parsing (core and ayslx plugin) for incompatible changes
  in Aqsis 1.2

Scripts/Scripting Interface:
o added script "intfd.tcl" to switch all dialogs (file/color) to internal
  Tk dialogs
o added script "showwin.tcl" to de-iconify/show all application windows
o added script "tonpatch.tcl" that, similar to "topoly.tcl", converts all
  objects in the scene to plain NURBS patches
o added helper procedure "toolbox_add" for adding text based buttons to
  the toolbox window

Platform Support:
Win32:
o added true support for custom objects to the VC2005 build (custom objects
  could not use the RIB export facility, due to missing export symbols from
  the static Aqsis libraries in earlier versions)
Apple Mac OS X:
o added official X11 based build
o fixed image buttons for the X11 based build
o all dialog windows are now proper floating windows

Compilation/Installation:
o it is no longer possible to wrap the IDR, AyCSG, RRIB, ONIO, or
  MetaObj plugins into the Ayam executable


[21. Sep 2007] Ayam 1.13:
=========================
Bug Fixes:
  - crash after deleting of objects (SF 1637735)
  - crash after applying ScriptAttr property (SF 1637748)
  - crash using STESS drawing mode for curves (SF 1641883)
  - conversion of NPatch objects misses transformations (SF 1646153)
  - crash after copying/cutting objects using clipboard (SF 1646155)
  - insert scene fails with Tcl error on Mac OS X (SF 1648924)
  - script objects with saved data arrays fail to load params (SF 1650836)
  - no redraw in modelling view for LazyNotify (SF 1650838)
  - crtspiralgui example script fails to load parameters (SF 1651366)
  - wrong start cap of Sweeps with bevels (SF 1652653)
  - wrong caps of extrusions with transformed parameter curves (SF 1652655)
  - reversed ModelMode menu (Global/Local) on Aqua (SF 1656876)
  - ONIO: import of texture coordinates for polymesh objects (SF 1658182)
  - provide/convert of transformed objects with caps (SF 1658185)
  - provide/convert of non-simple quadrics (SF 1661508)
  - newly created level objects may get wrong type (SF 1661732)
  - provided NURBS patches of non-simple spheres (SF 1665915)
  - closing preferences with Ok does not redraw (SF 1665917)
  - extrude ignoring bevel parameter revert (SF 1673532)
  - tesselation GUI crashing when instance objects are selected (SF 1676787)
  - object picking fails in draw level only views (SF 1680998)
  - object picking reconsider dialog selection is off-by-one (SF 1681000)
  - Tcl error when clicking into the (empty) property list for
    multiple selected objects (SF 1682820)
  - Tcl error for "Help on property" if no properties are present (SF 1682822)
  - STESS tesselation after certain NURBS curve modelling tools (SF 1690799)
  - first view does not appear in the tree view (SF 1695151)
  - crash when elevating non-clamped NURBS patches (SF 1701803)
  - incorrectly drawn lights with light shaders (SF 1764817)
  - "Defaults!" button in shader property GUIs when a shader parsing
    plugin is in use (SF1779508)
  - single point editing of multiple selected objects (SF 1790657)

GUI:
o fixed select background color when changed via X resources (backported
  appropriate BWidgets bug-fix)
o fixed local views redrawing upon scene saving
o added tag type "RP" to block access to certain properties of an object
  via the property GUI
o ExtrNC objects may no longer, erroneously, be associated with materials
o improved handling of AutoFocus in various dialogs
o added last used tool facility to Tools main menu
o added keyboard shortcuts to set point coordinates in the direct point
  editing dialog (using <Return> or <Enter>)

Modelling:
o added "Revert" parameter to ExtrNC object
o ExtrNC objects now draw a direction arrow (like NCurve objects)
o ExtrNC objects may now extract the complete surface boundary
o the standard ConcatNC knot type is now "Custom"
o Cap objects can now also create caps from non-planar curves (by splitting
  the curve into four pieces and building a Gordon surface)
o in direct connection with the above, Gordon surfaces now support rational
  curves for the special case of a Coons patch configuration (four curves)
o improved speed of object picking in shaded views
o added Split PolyMesh modelling tool
o added clamping of NURBS patches (new scripting interface commands "clampNPU"
  and "clampNPV" and new main menu entries "Tools/NURBPatch/Clamp")
o added "rescaleKnNP" command to rescale the knot vectors of NURBS patches
  and main menu entries "Tools/NURBPatch/Rescale Knots to Range" as well as
  "Tools/NURBPatch/Rescale Knots to Mindist"
o added "insknNPU"/"insknNPV" commands and tools (new main menu entries
  "Tools/NURBPatch/Insert Knot U" and "Tools/NURBPatch/Insert Knot V")
  to insert knots into NURBS patch knot vectors
o added "splitNPU"/"splitNPV" commands and tools (new main menu entries
  "Tools/NURBPatch/Split U" and "Tools/NURBPatch/Split V") to split
  NURBS patches at defined parametric values
o added "extrNP" command and tool (new main menu entry
  "Tools/NURBPatch/Extract Patch") to extract a sub-patch from a NURBS patch
o improved knot type handling in remove knot tool
o added "trimNC" command and tool (new main menu entry "Tools/NURBPatch/Trim")
o sweep cross sections may now be scaled independently in x- and y-dimension
  by using the y- and z-dimensions of the scaling curve
o sweep and birail objects now support 0 as number of desired sections and
  derive the sections from the trajectory or first rail curve respectively
o birail objects now support 1 and 2 sections properly

Drawing/Shading:
o added antialiasing drawing option for lines
o added hidden/wizard preference options for line width:
  "LineWidth" and "SelLineWidth" (set via ayamrc file)
o improved drawing of selected curves in "Shade&Draw" views
o improved shading quality of NURBS surfaces in STESS mode
o revived STESS drawing of trimmed NURBS surfaces

Import/Export:
o added DXF import/export plugin dxfio
o added X3D import/export plugin x3dio
o Mops import is now a plugin
o Wavefront OBJ import/export is now a plugin
o files may now be imported using the normal "File/Open" and "File/Insert"
  menu entries (Ayam will load the right plugin automatically and open the
  corresponding import options dialog, pre-seeded with the right filename)
o likewise, scenes may be exported using "File/Save as" and choosing a
  filename with an extension
o improved scalefactor option usage in rrib plugin
o added option to write binary 3DMF files
o added ReadCurves/WriteCurves/WriteSelected/ScaleFactor/RescaleKnots
  options to 3DMF import/export
o added proper trim curve support to 3DMF export/import
o all import options that scale NURBS patch knots now also scale the
  trim curves properly
o added ReadSTrim import option to mfio, onio, objio, and rrib

Scripts/Scripting Interface:
o added example script "toPoly" that allows to easily convert the whole
  scene to PolyMesh objects
o added example script "zap" that shows how to create buttons in the
  Ayam toolbox
o improved error detection and reporting of "withOb" command
o renamed getPnt option -u to -p and added support to get surface points
o added special keyboard shortcut <Shift-Enter> to the console that
  executes the current command, updates the GUI, and redraws all views

Documentation/Example Files:
o added small example scene files for some tool objects in "scn/objects"

Platform Support:
Apple Mac OS X (Aqua):
o fixed keyboard shortcuts to quickly switch property GUIs (numeric keypad)
  for Tcl/Tk 8.4.15


[1. Jan 2007] Ayam 1.12:
========================
Bug Fixes:
  - extra help menu entry Helpblock (SF 1549831)
  - RenderGUI feature can not find cat.exe on Win32 (SF 1549833)
  - File/Save Selected As only writes one object (SF 1553274)
  - NURBS curves show wrong type after creation (SF 1556881)
  - NURBS curves knot type not changeable (SF 1556882)
  - Apply of Transformations property notification error (SF 1560022)
  - Revolve in B-Spline mode from certain curves fails (SF 1565889)
  - insert/delete point actions do not redraw and notify (SF 1566337)
  - refine tool does not work (SF 1568723)
  - calling revert tool from main menu error (SF 1568725)
  - getting list based property values with getProperty fails (SF 1572216)
  - using refineNC with parameters may lead to crash (SF 1572217)
  - set gridsize ok button not working properly on Aqua (SF 1573133)
  - setting list based property values with setProperty fails (SF 1575072)
  - wrong error messages of setProperty (SF 1590901)
  - skins of rational curves not interpolating their bounds (SF 1592471)
  - creating tool objects and level objects moving wrong objects (SF 1594359)
  - Wavefront OBJ export ignores Bevel objects (SF 1597251)
  - automatic instancing ignores Bevel objects (SF 1597994)
  - Wavefront OBJ export of Level objects leading to multiple end statements
    (SF 1597995)
  - Rhino 3DM export ignores Bevel objects (SF 1598573)
  - Apple 3DMF  export ignores Bevel objects (SF 1598574)
  - default documentation URL offered in preferences on Aqua (SF 1599917)
  - refineNC with new knot vector not setting correct knot type (SF 1599950)
  - changing background image does not set scene change state (SF 1607354)
  - conversion of clone objects in mirror mode (SF 1620358)
  - swapping of mouse buttons on Aqua (SF 1623735)

GUI:
o added "set arbitrary grid size" entry to view window grid menu
o when a grid size is set for the first time, the grid will now automatically
  be drawn and also activated immediately
o added NURBS curve open/close/make periodic manipulation tools to main menu
  (previously only available through the property GUI)
o added help on object to object tree and object listbox context menu
o added help on property feature (new property listbox context menu entry:
  "Help on Property" and new main menu entry "Help/Help on Property")
o added explaining balloon info to NPInfo property elements
o fixed various tools not setting the scene changed state: split to curves,
  build from curves, merge PolyMesh, create TrimRect, conversion

Modelling:
o shift closed B-Spline tool now accepts negative parameters
o added remove knot from NURBS curve tool
o added coarsen tool for NURBS curves
o create trimrect now creates curves with multiple points
o added object type "NCircle"
o Level objects now provide all child objects of requested type to a
  potential parent object

Renderer Support:
o added render to file feature: new view menu entry "View/Render To File",
  new "RIB-Export" preference settings: "FRender", "FRenderUI", and "FRenderPT"

Import/Export:
o added support for convertable custom objects to Wavefront OBJ, Rhino 3DM,
  and Apple 3DMF export (this allows direct export of e.g. MetaObj objects)
o added support for Script objects to Wavefront OBJ export
o added support for NURBS curve providing trim objects to Wavefront OBJ export
  and Rhino 3DM export

Platform Support:
Apple Mac OS X (Aqua):
o added proper (application specific) about menu
o switched to Tcl/Tk 8.4.14 for official binary that allows to build
  Ayam as universal binary and with support for older Mac OS X versions
o improved layout of single menu elements (e.g. LevelAttr property)
Win32:
o added complete plugin support (including dynamic loading of custom objects)
o the official binary distribution now contains just one executable and the
  onio (Rhino 3DM I/O), rrib (RIB import), and aycsg (CSG preview) plugins


[10. Aug 2006] Ayam 1.11:
=========================
Bug Fixes:
  - fixed not changeable preference setting "AutoFocus" (SF 1497964)
  - fixed export of PolyMesh objects with PV tags using "Pw" (SF 1504284)
  - fixed selection of objects in large slow drawing scenes leading to
    de-synchronized property display (SF 1510329)
  - fixed Rhino 3DM (OpenNURBS) import of complex scenes with multiple
    BRep objects (SF 1514799)
  - fixed usage of tesselation method set via preferences (SF 1519105)
  - fixed conversion of Text objects ignoring the in_place option (SF 1522335)
  - fixed crashing Cap object when NPatch and NCurve are used as child
    (SF 1522337)
  - fixed OpenNURBS export setting scene changed state (SF 1526206)
  - fixed edit points modelling action not issuing a notification upon
    snapping of points to the grid (SF 1528712)
  - fixed command line parameter parsing on Win32/VC++2005E (SF 1531467)
  - fixed bevel object changing the child object (SF 1534989)
  - fixed curvature plots of closed BSplines (SF 1537380)
  - fixed undo, clipboard operations, and modelling tools not doing
    notify when preference setting CompleteNotify is set to "Always"
    (SF 1537385, 1537107, 1537105)

GUI:
o added default values to "Set GridSize" dialog and object property
o added keyboard shortcuts to apply property changes using <Enter> (on
  the numeric keypad)
o texture coordinate editor now produces less error messages when called
  without selected object
o the picking dialog now appears near the mouse pointer; in addition,
  a double click on any listbox item now selects it and closes the dialog
o added preference setting "AddExtensions" that controls whether Ayam
  should automatically add file name extensions
o moved "Points" sub-menu from "Special" to "Tools" menu
o added "Reset Preferences" facility to make resetting the preferences to
  factory defaults more easy
o added keyboard shortcuts to the tree view and object list that extend
  the current selection to the first and last object of the current level
  respectively (<Shift-Home> and <Shift-End>)

Modelling:
o added converter from PolyMesh objects to SDMesh objects
o added converter from SDMesh objects to PolyMesh objects
o reduced number of notification operations and view redraws after
  a modelling operation
o the tesselation tool now adds TP tags to all types of objects
o object conversion from tool objects (e.g. Revolve) to NPatch objects now
  maintains eventually present TP tags
o improved drawing of selected curves in "Shade&Draw" drawing mode
o added snap-to-grid modelling actions for points, new view shortcuts
  for that are <g> (2D) and <G> (3D)
o made SDMesh scheme property element a menu (and thus changeable)
o improved bevelling of rotated curves using the Bevel object

Renderer Support:
o added shader parsing plugin for Gelato
o added renderer profile for Gelato to "Select Renderer" dialog
o added shadow map generation preference options to improve Gelato support:
  "SMFileFormat", SMFileType, and "SMChangeShaders"
o added scan shaders option to main menu ("Special/Scan Shaders")
o added shader parsing plugin projects to VC2005 workspace
o made all shader parsing plugins Ayam version independent
o added support to render just one shadow map from the selected light
o removed support for Aqsis0.8.0 from renderer selection dialog

Platform Support:
Apple Mac OS X (Aqua):
o added workaround for Apple GLU bug that prevents drawing&shading of
  Box objects and NURBS patches in one scene
o added default value to "Docs" preference setting, that points to the
  HTML documentation in the application bundle
o added a workaround to make the standard application exit keyboard
  shortcut <Command-q> work
o added hidden preference setting "PrepDiaCap" that prepends message box
  titles to their message as the titles are not displayed on every system
o default keyboard bindings for the Alt-Rotate view action and the stretch
  modelling action now use the correct keysyms
o primarily for running from an application bundle, Ayam now allows to turn
  off the splash screen via environment variable "AYNOSPLASH"

Import/Export:
o added progress display to Wavefront OBJ import and export
o made cancel button work properly for Wavefront OBJ import and export
o added scale factor option to Wavefront OBJ import and export
o added support to detect and fix degenerate faces to Wavefront OBJ import
o improved detection of consecutive faces for Wavefront OBJ import: now
  intermediate "usemtl"-lines do not lead to isolated faces anymore
o added scale factor option to Rhino 3DM (OpenNURBS) import and export
o added progress display to Rhino 3DM (OpenNURBS) import and export
o added scale factor option to RIB import

Scripts/Scripting Interface:
o removed superfluous commands "revertNC" and "revertIC", use "revert" instead


[13. May 2006] Ayam1.10:
========================
o bug fixes:
  - fixed TP tags created by tesselation GUI (SF 1431917)
  - fixed broken SwapUV of PatchMesh objects (SF 1436463)
  - fixed display of SParamV parameter in tesselation GUI (SF 1468212)
  - fixed initial point size when drawing meta object components (SF 1486208)
  - fixed initial notification of meta objects for reading from scene
    files without views (no OpenGL context) (SF 1487787)
o added "BP" tag type to store bevel parameters
o changed bevel parameter storage mechanism and property GUI of Extrude
  and Text objects to use BP tags
o added new bevel modes, that automatically create caps (for convex outlines
  without holes)
o added start/end bevels to sweep, skin, birail1, and birail2 objects
o added Bevel object type
o added periodic sweeps; "Closed" attribute renamed to "Type", for new type
  "Periodic" a periodic trajectory will now be sampled in a way, that a
  fully closed/periodic smooth sweeped surface is created
o added support for one and two section sweeps (with consequently lower order)
o added mechanism to close NURBS patches in either u or v parametric dimension
o added multiple points support to NURBS patches
o improved NURBS tools menus: "Reset Weights" now appears in correct sub menus,
  collapse/explode points commands moved to NURBCurve and added to NURBPatch
  sub menus respectively
o added full interpolation control option to Birail2 object
o ExtrNC now checks for and sets a correct curve type
o added display of the number of created triangles to tesselation GUI
o added standard Docs URL to the preferences dialog
o "Set BGimage" in the view menu now also enables drawing of the BGImage
o improved font selection for keyboard shortcut display window on MacOSX/Aqua
o improved tesselation GUI layout of SMParamV on MacOSX/Aqua
o fixed blocking about dialog on Tk 8.4.12 on MacOSX/Aqua
o added help menu entries to view window menus on MacOSX/Aqua
o fixed compilation of IDR plugin on MacOSX/Aqua
o fixed blocking help menu entries for Tk 8.4.13 on MacOSX/Aqua
o fixed blocking show preferences application menu entry for Tk 8.4.13
  on MacOSX/Aqua
o fixed display of splash screen on MacOSX/Aqua
o fixed documentation paths in Ayam.app and Ayam.dmg compilation targets
o added target to build an Ayam.app application bundle that contains
  a local copy of the Tcl and Tk frameworks
o fixed compilation of onio plugin with recent SGI-CC versions and with
  MS VC++2005E
o improved tifflib directory usability test in ayamConf.tcl
o added complete notification feature; in scenes with references, this
  makes sure all tool objects depending on references (directly or indirectly)
  are notified about changes of the master object; this feature is controlled
  via the new preference setting "Modeling/CompleteNotify"
o added "centerPnts" scripting interface object and corresponding entries
  in the "Special/Points" menu to center all points of an object
o made "HideChildren" attribute accessible in object Attributes property GUI
o RIB-Export now obeys the "HideChildren" attribute
o initiate notification upon creation of tool objects
o sort parameter objects upon creation of tool objects
o fixed compilation of Ayam with current SGI-GLU (Mesa 6.5) and MS VC++2005E
o added MS VC++2005E workspace for compilation on Win32
o added workaround for broken GLU implementations (views stop to draw NURBS
  after the tesselation facility was in use)


[12. Feb 2006] Ayam 1.9:
========================
o bug fixes:
  - fixed automatic merging of PV tags (SF 1238692)
  - fixed root object not drawn upon "File/New" (SF 1245221)
  - fixed warning message to disable script tags and objects while loading
    scenes via MRU menu entries (SF 1245225)
  - fixed provided clone objects missing transformations (SF 1247844)
  - fixed crash when using undo after an in-place conversion (SF 1253036)
  - fixed crash when using undo after tesselation GUI (SF 1258297)
  - fixed tesselation GUI not updating the object tree properly (SF 1258299)
  - fixed create trimrect tool setting wrong weight values (SF 1269176)
  - fixed tesselation GUI not working with multiple selected objects
    (SF 1294013)
  - fixed tesselation GUI not removing all TP tags (SF 1294023)
  - fixed Shift+Tab bindings when Ayam is used with Tk8.4 (SF 1324656)
  - fixed opening of the preferences editor leading to Tcl errors in
    rare cases (SF 1325362)
  - fixed "repairAyam.tcl" not working on MacOSX (SF 1345611)
  - fixed drawing of selection rectangle on MacOSX (SF 1394822)
  - fixed flashing of editable points on MacOSX (SF 1394823)
  - fixed RIB export of SDMesh objects using "Pw" instead of "P" (SF 1415306)
  - fixed sweeps of regular trajectories failing in rare cases with low
    numbers of sections (SF 1418635)
  - fixed crash when instance objects get deleted from undo buffer (SF 1424580)
  - fixed crash when ConcatNC has no children and option FillGaps is enabled
    (SF 1425749)
o improved OBJ import of files with trailing whitespace as e.g. written by
  Blender
o script objects now cache a compiled version of the script for faster
  execution
o added support for disabling "NS" (notify script) tags upon loading
o added wizard preference option to control warnings about unknown tag types
o added facility that allows plugins to correctly reconnect already present
  tags of the types that are defined by the plugin upon initialization
o added "UMM"/"VMM" tag types that may be used to trim the knot vectors of
  NURBS curves and surfaces by specifying min/max values
o added keyboard shortcut to close the toolbox window
o added scripting interface command "repOb" and corresponding main menu
  entry "Special/Clipboard/Replace" that replaces the currently selected
  object(s) with the object clipboard content
o added object type "RiProc" for procedural objects (supporting
  DelayedReadArchive, RunProgram, and DynamicLoad)
o added a mechanism to allow cascaded script objects
o added proper error messages when no objects are selected upon creation
  of NURBS tool objects (revolve, skin, etc.)
o improved deleting of referenced objects
o skin objects now work with multiple provided objects
o clone objects in mirror mode now provide all objects (normal and mirrored)
  and reverse the order of the mirrored objects so that a single clone
  in mirror mode with a single NURBS curve as child can serve as parameter
  object for a skin
o changed the "Closed" attribute of NURBS curves to "Type", adding a
  distinction between normal closed curves (e.g. the standard NURBS circle)
  and periodic curves (e.g. circular B-Splines)
o added "IsRat" (is rational) attribute to NURBS curves and patches and
  changed all import/export modules to use this attribute to write properly
  attributed and smaller files for non-rational curves and patches
o improved AutoFocus on window systems that only do AutoRaise by switching
  off AutoFocus temporarily when certain dialogs are open (so that they
  do not get "shuffled under" by accidental mouse movements)
o made order of NURBS curve drawing options more consistent (to the NURBS
  patch drawing options)
o added "RescaleKnots" option to Wavefront OBJ import, Rhino 3DM import,
  and RIB import to allow immediate rescaling of knot vectors to safe
  distances (e.g. for display with GLU)
o added "TopLevelLayers" option to onio plugin that converts the top level
  level objects to layers for Rhino export
o renamed main menu entries "File/Replace" and "File/Load Custom" to
  "File/Open" and "File/Load Plugin" respectively
o added command line option "-noview" that inhibits loading of the environment
  and opening of a first view window upon startup
o changed default behaviour of Ayam on the very first start (no ayamrc
  file and no environment found): Ayam will now open a first view window
o added new NURBS curve and surface drawing and tesselation modes not
  based on GLU called "STESS" (for simple tesselation)
o added example/helper script "2lcons.tcl" that restricts the Ayam console
  to display just two lines of text
o "TP" tags now handle a second parameter to allow adjusting the quality
  of the tesselation independently in the U and V parametric dimensions
o the "forAll" and "forAllT" scripting interface commands now maintain the
  selection for the object tree
o improved memory consumption of undo system for view-less modelling
o added "Load from file" context menu entry to script object, to allow
  direct loading of scripts from Tcl files
o added scripting interface commands "setProperty" and "getProperty" to ease
  management of property values
o added view draw option to draw object coordinate systems
o NURBS knot vectors are now protected from accidental modification via
  apply operations in the property GUI
o added "addToProc" command to scripting interface
o Rhino 3DM: added support for exporting arbitrary trimmed NURBS patches
  (using polyline approximations for trim curves that can not be pushed
   up from 2D to 3D by OpenNURBS)
o Rhino 3DM: added support for exporting trim loops consisting of multiple
  trim curves
o improved example script for adding toolbox buttons (did not span the
  whole toolbox on Win32)
o added work-arounds for console cut and paste and some keyboard shortcuts
  not working anymore on Tk8.4
o added work-around to fix drawing/shading of NURBS curves/surfaces on
  MacOSX/Aqua in multiple view configurations
o added "Ayam.app" application bundle directory structure and resources
  for running on MacOSX/Aqua; when copied to the application folder, this
  makes Ayam a first class application on MacOSX/Aqua with icons, connected
  document types etc.; HTML docs and plugins are also in this bundle now
o added hidden preference setting to swap mouse buttons 2 and 3 for running
  on MacOSX/Aqua
o added hidden preference setting "UseInternalFD" to allow loading of plugins
  from the Ayam.app application bundle directory structure on MacOSX/Aqua
o added AppleScript port to Ayam so that now e.g. scene files may be dropped
  onto the (docked) application icon on MacOSX/Aqua and "repairAyam.tcl"
  may send itself to Ayam via AppleScript now as well
o added fixes for miscellaneous GUI look and feel glitches on MacOSX/Aqua:
  "blinking" tool tips, too narrow buttons, black notebook tabs, invisible
  color buttons in property gui, misaligned check property gui elements,
  vertical alignment of menu property gui elements, starting size of object
  tree, window attributes of toolbox and direct point editing dialog, view
  menus (no icon images allowed)
o default ayamrc filename on MacOSX/Aqua changed to
  "~/Library/Preferences/.ayamrc" and environment file to
  "~/Library/Preferences/.ayam2view.ay"
o improved handling of local ("file://") documentation URLs
o added hidden preference option "CursorEnd" that controls moving the console
  cursor to the end (ready for entering text at the prompt) when the console
  gets the focus (e.g. by clicking anywhere into the text widget)
o added DMG (disk image) distribution method for MacOSX/Aqua
o Win32 AyCSG executable is now compiled with the newest GLEW to make AyCSG
  work with OpenGL 2.x drivers
o added support for "Loop" subdivision scheme to both RIB import and export
o added "NumPatch" option to ExtrNC objects so that they may now select
  a patch from a list of patches (may now extract a border curve of a bevel
  from an Extrude object)
o added display of scene changed state in main window titlebar


[5. Jul 2005] Ayam 1.8.3:
=========================
o bug fixes:
  - fixed moving of tagged points of multiple selected objects (SF 1220972)
  - fixed notification of multiple modified objects upon undo/redo (SF 1223494)
o improved import option dialogue of "rrib" plugin (added FileName)
o improved import and export option dialogues of "onio" plugin (added FileName)
o file, multiple file, and multiple directory property GUI elements now
  automatically scroll to the end after a "Set" operation to show the more
  relevant part of the changed value
o added Wavefront OBJ import (supporting trimmed NURBS and polygonal faces
  with texture coordinates)
o added support for Hyperboloid and Paraboloid objects to 3DMF export
o improved error reporting of "onio" plugin
o added support for importing polygonal meshes to the "onio" plugin
o added option to merge PV tags of PolyMesh objects to merge PolyMesh tool
o Main menu entry "Special/Resolve All Instances" no longer completely resets
  the tree widget so that it is more clear, that it really just operates in
  the current level (and below)
o onio import now handles texture coordinates for polymesh objects
o onio export now handles polymesh objects (with texture coordinates)
o Wavefront OBJ export now supports export of all quadrics as NURBS
o added instant apply facility to all property GUI elements, holding
  down the "Shift" button while interacting with buttons and menus and
  pressing the "Enter" key in entries will cause an instant apply now
o improved initial knot type of Skin objects (now NURBS instead of Bezier)


[15. May 2005] Ayam 1.8.2:
==========================
o bug fixes:
  - fixed provide callback (e.g. for Wavefront export) of transformed extrude
    objects with caps and bevels (SF 1207251)
  - fixed focus handling on startup with splash screen (SF 1208722)
  - fixed endless loop for closing view windows with view objects not in
    the root objects child level (SF 1208726)
  - fixed erroneous (superfluous) view redraws and point flashing of direct
    point editing action when normal point editing and flashing of points was
    enabled before direct point editing was invoked (SF 1207921)
o added a helper script "repairAyam.tcl" that resets the state of Ayam
  should it be stuck in an endless recursion of Tcl errors
o improved handling of CFLAGS and Tcl/Tk8.4 in ayamConf.tcl
o added new plugin "onio" that imports from and exports to the Rhino 3DM
  file format using OpenNURBS (http://www.opennurbs.com/)
o added conversion of all quadric objects to NURBS representations
  including support for all quadric parameters and all caps
o added conversion of box objects to a NURBS representation
o added radius option to the "crtNSphere" and "crtNCircle" scripting interface
  commands and the respective tool menu entries in the main menu
o improved bevel creation for extrusions of curves with weighted sections
o added new tag type "NP" (for new property) that allows to add new
  properties (and their property GUIs) to objects
o added support for script controlled property GUIs to the script object
  (see new script example "scripts/crtspiralgui.tcl")
o added option to rescale knot vectors of NURBS curves to arbitrary ranges
  and to minimum distances to the "rescaleKnNC" scripting interface command
o added flashing of editable points to direct point edit, tag, delete, and
  insert point actions
o added scripting interface command "help" that (similar to the
  "Help on Object" main menu entry) opens a web browser with the
  documentation of a scripting interface command
o added shortcut to scripting interface command pclip_copy: "copyProp"


[14. Mar 2005] Ayam 1.8.1:
==========================
o bug fixes:
  - fixed "setPnt/getPnt" scripting interface commands for NURBS patches
    with differing width and height (SF 1091407)
  - fixed Tcl errors for property listbox scrollbar on Win32 (SF 1104662)
  - fixed views sometimes getting wrong camera values (SF 1106832)
  - fixed tesselation gui not working with already present TP tags (SF 1110857)
  - fixed memory leak in tesselation gui (SF 1202363)
  - fixed OBJ export of Birail1, Birail2, and Text objects (SF 1203345)
  - fixed 3DMF export of Birail1, Birail2, and Text objects (SF 1203343)
  - fixed rendering of multiple CSG objects using the AyCSG plugin (SF 1205872)
  - fixed rendering of CSG hierarchies with multiple unions using the
    AyCSG plugin (SF 1205870)
o added a new object type "Script", that executes small Tcl scripts to
  create complex objects, modify objects or do other things
o added example scripts for the new Script object type to the new "scripts"
  sub-directory
o added tag type "NS" that may contain small Tcl scripts to be executed
  when the notification callback fires
o added support for the extraction of curves at arbitrary parametric values
  to the "ExtrNC" object type
o improved extraction of curves from transformed patches; the transformations
  are now copied to the curve and not applied to the control points
o added information dialog to the preferences that informs the user when
  a restart of Ayam is needed in order for his changes to take effect
o views may now be rotated and zoomed while the tesselation gui is active
o added warning message for light objects with light shader but type != custom
o added support for NPatch providing objects to tesselation GUI
o improved delegation of transformations using the "delegTrafo" scripting
  interface command
o added support for bounding box speedups to the AyCSG plugin ("CalcBBS"
  option now works)


[29. Oct 2004] Ayam 1.8:
========================
o bug fixes:
  - fixed "loadayslo3d.tcl" loading the wrong plugin (SF 928054)
  - fixed "Select Renderer" setting a wrong shader extension for "3Delight"
    (SF 928055)
  - fixed memory leak reading NURBS patches with custom knot vectors from
    scene files (SF 959714)
  - fixed detection of negative scale factors (SF 962427)
  - fixed splitting of NURBS curves not setting undo operation name (SF 974216)
  - fixed empty ayamrc when toolbox window is closed on exit (SF 977750)
  - fixed crash with -h command line option (SF 979966)
  - fixed zooming of view windows via numeric keypad (SF 986519)
  - fixed swapUV/revertU/revertV NURBS patch tools not undoable (SF 994389)
  - fixed bevels from extrusions getting wrong knot vector types (SF 994626)
  - fixed caps and bevels of converted extrusions getting wrong transformation
    attributes (SF 994632)
  - fixed broken caps of skins (SF 995711)
  - fixed broken curvature plots of rational curves (SF 997184)
  - fixed broken shader parsing with newer Pixie versions (>1.2.9) (SF 998535)
  - fixed create NURBS tools not setting the scene changed state (SF 1008840)
  - fixed RIB import of archives with relative path names (SF 1009841)
  - fixed broken matrix property GUI elements (SF 1021320)
  - fixed session management of shared executables (SF 1029709)
  - fixed direct point editing failing to initiate notification (SF 1033192)
  - fixed "ZoomRectangle" destroying actions in other view windows (SF 1039858)
  - fixed RIB-Export ignoring custom up-vectors (SF 744119)
  - fixed slow drawing of small grids far away from the origin (SF 1047772)
  - fixed compilation on SGI/IRIX using gcc (SF 1050515)
o added a new object type "Text", that uses Bezier curves extracted from
  TTF (TrueType) font description files together with the extrusion mechanism
  to form three dimensional letters (TTF parsing provided by Frank Pagels)
o added a CSG preview plugin (aycsg) based on OpenCSG
o added preference options to adjust the mouse button of the ZoomR and Rotate
  view actions
o improved behaviour of Ayam if double clicks are used in file requesters
  on the Win32 platform
o added "Sections" parameter to Revolve objects that controls whether a
  circular B-Spline should be used instead of the standard NURBS circle
o added "Order" parameter to Revolve objects that further controls the
  surface of revolution in B-Spline mode
o added the following options to the Wavefront OBJ export: "Selected",
  "TessPoMesh", and "OmitCurves"
o improved KDE integration (wrt icons in toplevel windows)
o improved TrimRect tool; it can now infer the parameter space dimensions
  from selected NURBS patches
o added Tesselation GUI that helps to determine the best matching tesselation
  parameters in an interactive way (new menu entry "Tools/NURBPatch/Tesselate")
o added keyboard shortcuts to display property GUIs, using keys <0> to <9>
o added object type "Birail1" that sweeps a cross section curve along
  two so called rail curves
o added object type "Birail2" that sweeps a cross section curve along
  two so called rail curves while morphing it into a second cross section
  curve at the end of the rail curves
o added provide mechanism capabilites to the Level object, thus it is now
  possible to use an intermediate Level object to add tags to an Instance
  object (that is used as parameter object of a tool object)
o improved behaviour of single point editing actions for multiple selected
  objects
o fixed problems exiting Ayam on Mac OS X introducing a fast exit compile
  time option
o improved preferences window management
o added "toXYNC" scripting interface command that rotates an arbitrary
  oriented planar NURBS curve back to the XY plane
o caps may now be created of arbitrary oriented planar curves
o added object type "ExtrNC" that extracts a NURBS curve from a
  NURBS patch object delivered as child object, as usual
o added flashing of control points to the single point editing action
  controlled via the new preferences option "Modeling/FlashPoints"
o added NURBS curve tool "makeCompNC" that makes the selected NURBS curves
  compatible for e.g. skinning, see also the new main menu entry
  "Tools/NURBCurve/Make Compatible"
o View windows are now drop targets like the view objects in the Root level,
  this means you can now e.g. drag&drop normal objects from the tree view
  to any view window and the view window will zoom to the dropped objects,
  dropping lights lets you see through the light, dropping cameras copies
  the settings from the camera to the view
o the HTML version of the documentation now contains more correct image tags
o improved behaviour of toolbox buttons for the special actions with held
  down "Shift" key
o improved single point editing wrt. scaled objects and zoomed views;
  PickEpsilon is now interpreted in object space and may not be zero
  anymore, preferences from older versions will be reset to 0.2
o Gordon objects WatchCurves feature now saves the original curves in the
  undo buffer
o added shortcuts to select all points (<A>), invert the point selection (<I>)
  collapse selected points (<C>) and explode the selected points (<E>) to
  view windows


[27. Mar 2004] Ayam 1.7:
========================
o bug fixes:
  - fixed object picking in draw-level-only views (SF 817796)
  - fixed (RIB) import of geometry after AreaLights (SF 825629)
  - fixed degree elevation of rational curves (SF 831901)
  - fixed drawing of handles for drawing mode "Shade&Draw" (SF 835166)
  - fixed memory leak in skin notification callback (SF 839424)
  - fixed update of preference editor upon "Save Environment" (SF 840184)
  - fixed loading of shader parsing plugins into XML parsing
    executables (SF 846743)
  - fixed NURBS spheres and NURBS patches created by "Build from Curves"
    tools not accepting trim curves (SF 849781)
  - fixed automatic scrolling to property GUI elements for dynamic
    property GUIs (SF 850477)
  - fixed "Reset Weights" action not being undoable (SF 856762)
  - fixed NURBS patches created by converting tool objects not accepting
    trim curves (SF 860474)
  - fixed pasting of properties using the property clipboard not being
    undoable (SF 864860)
  - fixed certain modelling states, in conjunction with changed selections,
    not being reachable by redo (SF 866321)
  - fixed undo system creating "null" states in the undo buffer, when
    modelling is resumed after redo (SF 868328)
  - fixed undo/redo crashing if objects that are in the undo buffer are
    deleted by consecutive object clipboard operations (SF 871521)
  - fixed various view operations (FromCamera, ToCamera, SetGridsize, SetFOV,
    ZoomToObject, AlignToObject) not being undoable separately (SF 877171)
  - fixed IDR plugins propagate parent action crashing for objects in the
    root level (SF 878550)
  - fixed conversion not initiating notification (SF 882935)
  - fixed 3DMF export not supporting "Clone" objects (SF 888029)
  - fixed bounding box calculation of trimmed NURBS patches and "Cap" objects
    (SF 889831)
  - fixed resetting the undo prompt after "File/New" and after the "UndoLevels"
    preference setting is modified (SF 898786)
  - fixed wrong undo prompt after the undo buffer is filled (SF 899870)
  - fixed double/half size of view windows using the view menu (SF 903555)
  - fixed normals of newly inserted vertices created by tesselation of
    PolyMesh faces with holes (SF 911538)
  - fixed not applied property changes getting lost on view enter (SF 911808)
  - fixed scrolling of "LightAttr" property GUI (SF 915233)
  - fixed Tcl errors when creating Level objects in closed levels (SF 920805)
o when the keyboard focus is moved from object tree/listbox to property GUI,
  the GUI is now scrolling to the entry with the focus immediately
o added "curvPlot" scripting interface command that creates a curvature
  plot in form of a NURBS curve object from a selected curve object
o the "Set FOV" menu entry is now disabled for parallel views
o improved keyboard handling of "Tags" property GUI
o improved resizing of property GUI elements
o added new tag type "PV" for primitive variables
o RIB-Import: added support for primitive variables to all geometric primitives
o RIB-Export: added support for primitive variables to objects of the
  following types: NPatch, BPatch, PatchMesh, PolyMesh, and SDMesh
o added "swapUV" scripting interface command and NURBS patch tool that swaps
  the u and v parametric dimensions of BPatch, PaMesh, and NPatch objects
o added "elevateNPU"/"elevateNPV" scripting interface commands that elevate
  the order of the selected NURBS patch(es) in the parametric dimension u/v
o reduced number of necessary redraws for subsequent "select all" operations
o added keyboard shortcuts to extend the current selection by pressing
  <Shift-Up> and <Shift-Down> to the object tree and listbox
o the "Select Renderer" feature no longer loads the "ayslx" plugin if scan
  shaders is enabled and libslxargs has been compiled into Ayam as primary
  shader parsing library
o improved initial directory and file type setting of "Load Custom Object"
  file dialog
o added support for shader parsing plugins on the Win32 platform
o the "Select Renderer" feature is now able to automatically load shader
  parsing plugins on the Win32 platform
o improved mouse wheel handling for property GUI scrolling on Win32
o added object type "Gordon" for Gordon surfaces
o pasting a Tag property now adds the new tags to the old ones, rather
  than completely replacing them
o added new option to the "Clone" object that may be used to create
  clones mirrored at the YZ-, XZ,- or XY-plane
o the "Clone" object can now also create clones of "Instance" objects
o cutting/copying objects to the object clipboard and deleting objects
  no longer completely clears the undo buffer, instead, just the deleted
  objects will be removed from the undo buffer
o added preference option "Modeling/Snap3D" that controls whether grids
  always influence all three coordinate values
o added zoom to rectangle feature (zooming into a rectangular region of a
  view marked with the mouse while holding down the "Shift" key)
o local views now align automatically after selection changes
o added icon based global/local mode menu to view windows, removed local
  entry from view configure menu
o hotkey preference settings are now sorted in the ayamrc file
o added support for shared objects/plugins to the MacOSX specific build
  process
o added support for invoking a standard web browser to display the
  help/documentation for MacOSX
o eliminated unnecessary redraws for clicks in the free space of the tree
  widget (to select the last object in the current level)
o added "revertU"/"revertV" scripting interface commands and NURBS patch
  tools that revert BPatch, PaMesh, and NPatch objects in the respective
  parametric dimension
o holding down the "Shift"-key now initiates a complete notify when the
  "Force Notification" button in the toolbox is pressed
o added a Wavefront OBJ export module, see new main menu entry:
  "File/Export/Wavefront OBJ"
o the RIB export main menu entry has moved to the new main submenu:
  "File/Export"
o the order of the Ayam Startup Sequence has changed, so that shader parsing
  plugins loaded automatically via the "Scripts" preference setting may be
  utilized automatically in the initial shader parsing pass
o added hidden preference setting "IconGamma" that may be used to adapt the
  contrast of all icons (especially the menu bar icons and especially on the
  Mips/IRIX platform)
o added "shiftClosedBS" scripting interface command that shifts the control
  points of a closed B-Spline curve, see also new main menu entry:
  "Tools/NCurve/Shift BSpline"
o added Makefile configuration GUI ("ayamConf.tcl") for easier compilation
  (Hynek Schlawack)
o added support for Aqsis0.9.0 to the "Select Renderer" feature to follow
  the incompatible changes in the Aqsis0.9.0 default rendering progress
  output
o improved layout of resized UI-elements on Win32
o improved detection of finished renderings
o to add objects to the selection using the object picking action the
  "Control" key has to be held down (and not the "Shift" key as in older
  versions)


[26. Sep 2003] Ayam 1.6:
========================
o bug fixes:
  - fixed crash when exporting scenes with malformed RiAttribute/RiOption
    tags (type "c" or "p", with a component missing) (SF 753550)
  - fixed rotate view action destroying light sources shader parameter
    settings (SF 753552)
  - fixed RIB import of arbitrary attributes (SF 754934)
  - fixed tag points using drag selection selecting wrong points (SF 763820)
  - fixed manually resizing view windows not updating the "ViewAttrib"
    property (SF 766347)
  - fixed picking in shaded views making grids draw in black color (SF 770221)
  - fixed "forAll" scripting interface command not tracking index
    (variable "i") correctly for recursive invocations (SF 774626)
  - fixed memory leak for RIB export of "RiHider" and "RiDisplay" tags with
    additional arguments (SF 787525)
  - fixed memory leak for RIB export of "RiAttribute" and "RiOption" tags
    (SF 788535)
  - fixed broken "maintain selection" option of "uS" scripting interface
    command (SF 794052)
  - fixed conversion of "Cap" objects ignoring the transformation attributes
    of the "Cap" object (SF 795293)
  - fixed crash when clipboard operations were used directly after view
    close (when the corresponding view object was selected) (SF 797213)
  - fixed scene loading via command line argument changing the prompt
    (SF 800914)
  - fixed material drag and drop not updating the property GUI (SF 807670)
o added preference setting "Misc/SavePrefsGeom" to control saving of the
  geometry of the preference editor window
o added two new renderers, Angel and Pixie, to the Select_Renderer feature
o added support for sl2xml in favour of sdpslparse
o added a new shader parsing plugin ("aysdr.so") for Pixie
o added a convert callback to NURBS patches
o added a new drawing mode "Shade&Draw" that displays e.g. shaded
  NURBS and their drawn representation simultaneously, the keyboard
  shortcut <Ctrl+S> still toggles between drawing and the shaded
  representation
o added a new icon based menu to switch the drawing mode to all view windows
o light source objects now honour "NoExport" tags
o added support for IntPair and FloatPair parameters to "RiAttribute" and
  "RiOption" tags, as well as to all tags, that allow a parameter list in
  the style of the "RiAttribute" tag; new type designating characters
  are "j" for IntPair and "g" for FloatPair
o added a new regexp based method of extracting the progress from the output
  of the renderer (needed for Pixie-1.2.1 and up)
o added backup on replace feature controlled by new preference setting
  "BakOnReplace" and new hidden preference setting "BackupExt"
o improved the "Special/Save Environment" feature, it now always
  pops up a file requester, and asks to adapt the preferences
  to use the new environment file
o improved drawing speed of selection rectangles (now using GL_COLOR_LOGIC_OP
  and XOR, if OpenGL 1.1 is available)
o added support for using Aqsis libri2rib as BMRT libribout replacement
o added a new option "IsLocal" to the light objects, that controls whether
  all objects in the scene are lighted or just objects from the same level
  and below
o added keyboard shortcut to reset the tree view (<Ctrl+l>)
o moved material name and reference counter from "RiAttributes" property
  to new property "MaterialAttr" for Material objects
o added a new command "Add/Edit Material!" to the "Material" property
o added "Highlight Material" feature (Tools menu) that colours all objects
  of the same material in red in the tree view
o the shader selection dialog now binds to the keyboard and cycle-selects
  shaders on key-press based on their first letter (e.g. pressing <m>
  selects "matte" immediately)
o added preference setting "Modeling/DefaultAction" to choose between "Pick"
  and "None" to be invoked when the <Esc> key is pressed in a view window
o added keyboard shortcut for object picking action (<P>)
o added support for RiAttribute tags to light objects
o the ConcatNC attribute property now displays order and length of the
  resulting NURBS curve
o added scripting interface command "rescaleKnNC" that rescales a knot vector
  of a NURBS curve object to the range 0.0 - 1.0
o added "Set BGImage" entry to the "Configure" menu of view windows
o added a new, shape preserving knot vector generation algorithm to the
  "ConcatNC" tool object, enable it by switching the new "Knot-Type" attribute
  from "NURB" to "Custom"
o added a new parameter to the fillet creation algorithm for the "ConcatNC"
  object, it is named "FTLength" (Fillet Tangent Length) and controls the
  lengths of the outer fillet segments, which are tangential to the original
  curves
o added new tag type "SaveMainGeom" that is automatically filled with the
  geometries of main window and toolbox on scene saving and used to restore
  the geometry upon reading of scenes if it is present for the root object
o added new RiOption "StdDisplay" that may be used to inhibit writing of the
  standard Display option to exported RIB files
o added new option to convert mechanism that replaces the original objects
  with the new converted object, see new main menu entry:
  "Tools/Convert (In Place)" or press <Shift> when using the conversion from
  the toolbox
o the default conversion option for objects of type "Instance" now creates
  new objects (and does not replace the instance with a normal object)
o conversion of Revolve, Extrude, Sweep, and Skin objects now always
  creates a Level object, if the original object has caps or bevels
o the "remove tags"-menu in the tags property now also displays tag type
  names (and not just tag numbers)
o added keyboard bindings for the object hierarchy tree: <Left>, <Right>, <Up>,
  <Down>, <Home>, <End> move the selection, <Space> opens/closes nodes with
  child nodes, <Ctrl+a> selects all nodes in the current level and <Ctrl+n>
  removes the selection
o all keyboard bindings (except <Space>) also work for the object listbox
o when property GUI elements have the input focus an initial press of the
  <Esc> key is needed now before any main menu keyboard shortcuts may be used
o rotating a view via keyboard is now undoable; if the user holds down
  an arrow-button, only one entry is made to the undo buffer
o multiple selected objects are now always processed in the order in which
  they occur in the scene, not the order in which they have been selected
o improved focus handling in main window; switching the focus from the object
  tree/listbox to the property GUI is now much faster
o updated shader parsing code to follow the incompatible changes in Aqsis
  V0.7.19 libslxargs
o updated shader parsing code of ayslo3d plugin to follow the incompatible
  changes in 3Delight-1.0.6
o added preferences option "MarkHidden", that controls whether hidden objects
  should be preceded by an exclamation mark in the tree view
o wrapped executables now no longer need to run BWidgets from external files
  (on Win32 they had to be present in the same place as ayam.exe; on Unix,
   they were unpacked from the ayam executable on each startup to /tmp)
o improved the focus handling of the splash screen, keyboard focus is now
  always returned to the main window when the splash screen closes
o improved handling of MRU list entries; the last scene loaded is now always
  on MRU entry 1, even when it was already in the MRU list and also even if
  an existing MRU menu entry was used to load it
o checkbutton and menubutton property GUI elements may now also be controlled
  via keyboard


[10. May 2003] Ayam 1.5.1:
==========================
o bug fixes:
 - fixed erroneus drawing of NURBS patches with certain OpenGL/GLU
   implementations
   (SF 735600)


[05. May 2003] Ayam 1.5:
========================
o bug fixes:
  - fixed RIB import creating object names with malicious characters (spaces)
    (SF 686419)
  - fixed RenderGUI creating zombie processes on Linux, enable bug fix
    with -DAYENABLEWAIT in CFLAGS and set ayprefs(Wait) "waitPid" in .ayamrc
    (SF 687408)
  - fixed several memory leaks while reading scenes
    (SF 691567)
  - fixed memory leak while exporting to RIB
    (SF 691572)
  - fixed several memory leaks in undo mechanism
    (SF 694941)
  - fixed memory leak in edit master feature
    (SF 705442)
  - fixed several memory leaks in RIB import
    (SF 699852)
  - fixed undo/redo clearing the background image of view windows
    (SF 694946)
  - fixed RIB import of one set of trim curves for multiple patches
    (SF 695923)
  - fixed memory leak in NURBS curve property (that occurs, when the curve
    is closed, has multiple points, and is opened again using the property)
    (SF 697948)
  - fixed memory leak in material object property
    (SF 699855)
  - fixed memory leak converting instances to real objects via convert
    object and "Special/Instances/Resolve all Instances"
    (SF 699853)
  - fixed Tcl error messages about already existing nodes when tree updates
    run parallel, e.g. when pasting objects into the scene in fast sequence
    (SF 697124)
  - fixed "Resolve all Instances" and "Automatic Instancing" not clearing the
    undo buffer (undo after those operations may lead to broken scenes)
    (SF 697128)
  - fixed "Apply Trafo to all/selected Points" not being undoable
    (SF 697942)
  - fixed trim views drawing no bounds for trim loops
    (SF 699849)
  - fixed creation of RIBs with RiSpec violating RiSolid hierarchies
    (SF 698147)
  - fixed divide by zero Tcl error when resizing the toolbox window
    (SF 700834)
  - fixed broken RIB import of shader parameters of type string
    (SF 708678)
  - fixed undo/redo destroying tags
    (SF 708961)
  - fixed NURBS curve tools not being undoable when called via main menu
    (Tools/NURBCurve), and not via tool box button
    (SF 711212)
  - fixed "Clear Material!" not being undoable
    (SF 715103)
  - fixed changing the material of an object using the property GUI leading
    to wrong reference counters
    (SF 715106)
  - fixed DnD crash for multiple objects containing root
    (SF 715773)
  - fixed undo de-registering materials with changing names
    (SF 715110)
  - fixed trim views getting wrong window names after reading from scene files
    (SF 720122)
  - fixed show/hide not being undoable
    (SF 721631)
  - fixed optimize PolyMesh not being undoable
    (SF 721632)
  - fixed result of last view action (without selection) not being redoable
    (SF 724085)
  - fixed "Special/Tags/Add RiAttribute" and "Add RiOption" not being undoable
    (SF 724947)
  - fixed "Hide" attribute of "Root" object getting lost during save/replace
    (SF 725094)
  - fixed conversion of MetaObjects to PolyMeshes ignoring the transformation
    attributes of the MetaObject
    (SF 717579)
o added support for inline declarations of e.g. shader parameters to the
  RIB import plugin
o added an example scene for subdivision meshes
o added an adaptive calculation mode to the "MetaBalls" custom object
  (Frank Pagels)
o improved object tree update process; it now checks for scene changes that
  may occur while the widget is updating, and schedules an extra update
  operation if this happens
o the "ConcatNC" object can now also create a fillet for a single parameter
  curve to close it
o the BWidgets package is now requested with exact version (1.2.1) so that
  newer (inkompatible) installed versions of BWidgets can cause no harm
o added a compile time option "-DAYWITHAQUA" to distinguish between
  MacOSX-Aqua and MacOSX-X11
o added Tcl scripting interface command "wrib" that lets you export RIBs
  from a selected "Camera" object (and does not need a view window)
  Thus, you may now create, model, or modify scenes without any view windows
  and still can get your RIBs for rendering.
o added a new sub menu to the "Special" main menu: "RIB-Export", it allows
  you to export a RIB from a selected "Camera" object, and to create shadow
  maps
o added RIB export from selected objects feature (menu
  "Special/RIB-Export/Selected Objects")
o added tag type "NoExport" that prevents objects from being exported to RIBs
o shaded views now also draw grids
o material drop and the drop actions for views and cameras are now undoable
o added a NURBS to polygon tesselation facility based on the GLU tesselator
o added "SMethod" and "SParam" preference settings (section "Misc") to
  control the polygon tesselation
o improved drawing speed of NURBS curves and surfaces that are outside
  the viewing volume
o improved look of check buttons on Win32 if used exclusively in a GUI
o added a hidden preference setting "Prompt" that may be used to adapt the
  prompt in the Ayam console
o added support for NURBS curve providing objects (e.g. "ICurve" and
  "Instance") to be used as trim curves
o added a keyboard shortcut for the "Edit Master"-Feature (<Ctrl+M>)
o the console prompt now displays the name of the operations that can be
  undone and redone respectively


[07. Feb 2003] Ayam 1.4:
========================
o bug fixes:
  - fixed remembering of the state of the object selection listbox/tree
    when the context menu or a double click on the label is used to
    switch between both representations or the toolbox window is closed
    using the window decoration close button
  - fixed broken RIB-export of Clone objects
  - fixed broken RIB-export of RiAttribute/RiOption color/point tags
  - fixed merging of PolyMesh objects with different number of
    vertices and control points
  - fixed Materials level created by RIB-import losing the child
    objects when the imported scene is saved and then read again
  - fixed broken delete operation of Clone objects
  - fixed edit_material not scrolling the tree widget properly when the
    material object is in the root level of the scene
  - fixed "align view" setting a wrong up-vector for views of type "Top"
  - fixed object picking by dragging the mouse in conjunction with
    "draw level only" rendering the view useless
  - fixed "move view" action not working properly in local aligned views
    of type "Top"
  - fixed object listbox context menu generating an empty Tcl error message
  - fixed official Linux executable not be able to execute other NVidia-OpenGL
    using programs (by patching the Tcl-source to not use vfork() but fork())
  - fixed problems building the documentation on Debian 3.0 (Woody)
  - fixed object picking when the root object is hidden
  - fixed omitting shaders with array arguments from the lists of
    available shaders
  - fixed rotate about modelling action not rotating around a grid point
    in views of type "Side", when the view is additionally moved sideways
  - fixed view objects not reading "BGImage" and "DrawBG" parameters from
    scenes written by Ayam 1.3
  - fixed RIB-import not resetting the object name when done importing,
    leading to wrongly named objects for the next invocation of RIB-import
  - fixed creation of NURBS curves with desired length 2 or 3 creating
    a wrong NURBS curve specification (too high order, wrong knot vector)
  - fixed broken creation of shadow maps from point light sources that make
    use of their "From"-values
  - fixed preference setting TclPrecision being ignored
  - fixed RIB export of scenes using instances and shadow maps
o reduced number of redraws when selecting hidden or material objects
o added a RiDisplay tag type, that allows to add more output files
  (e.g. containing depth buffer information) to the scene
o added a RiHider tag type, that allows to select and parameterize
  a different hider algorithm
o added import of RiDisplay and RiHider statements to the RIB-import plugin
o added french translations for the preferences balloon help texts
  (Michel Armand)
o added PolyMesh optimization tool, that reduces the number of control
  points (Frank Pagels)
o added global keyboard shortcuts to easily switch display-mode,
  sampling-tolerance, and lazy-notification via function keys
o the Mops import options have been moved from the preferences to
  a small option requester
o the direct point editing dialogue is now always transient
o rotate about modelling action: the point to rotate about is now
  snapped to grid coordinates immediately
o the Sweep is now much faster for highly curved trajectories
  (e.g. the speedup factor for the "sgi cube" is about 4.5)
o added a close option to the Sweep object, that closes the resulting
  swept surface, even though the trajectory curve is not and arranges
  for the first and last section to be parallel
o the Sweep now interprets a third child curve as scaling function
o the Clone object can now also place the created clones along a curve
  and rotate them accordingly (similar to the section curves of a Sweep)
o multiple point selection via mouse drag has been improved greatly,
  it is now much faster and selects also points that are hidden behind
  other points
o added edit master feature (main menu "Edit/Master") that finds and
  selects the master object of an instance object (similar to the edit
  material feature)
o "align view" now aligns to the object space of the selected object
  (and not just to the object space of the current parent object);
  in addition, grids are now drawn and handled correctly for aligned views
o the configure menu of view windows has been rearranged to make it more
  clear, that aligned local views not only draw a grid aligned to local
  object space, but that editing takes also place in that space
o a new shortcut <Ctrl+l> has been added to the view menu entry
  "Configure/Edit Local"
o the handles of editable points of objects are now only drawn, when
  a modelling action is in effect, that could modify editable points
o added support for "RiSides" to the RiAttribute property of material
  objects; RIB-import now also handles RiSides
o the RenderGUI windows look a little bit nicer now on the Win32 platform
o added an internal kill command for the Win32 platform ("w32kill") that
  may be used by the RenderGUIs to stop the rendering (set hidden preference
  option "Kill" to "w32kill" to accomplish this)
o added object type "SDMesh"; RIB-import now also handles
  subdivision meshes
o edited points are now immediately snapped to grid coordinates
o direct point editing dialogue now stays open all the time
o added a Local/Global menu to the direct point editing dialogue
o the splash screen now grabs the focus to avoid problems with stray mouse
  events delivered to other windows when the splash screen is closed
  manually by the user
o added some example scenes to demonstrate new features of ConcatNC, Clone,
  and Sweep objects
o added invert point selection feature (see new main menu entry:
  "Special/Points/Invert Selection")
o the Win32 executable is now statically linked with the GLU library from
  the free OpenGL sample implementation (OSS) from SGI; the compiled library
  (superglu) kindly provided by the Coin3D project (http://www.coin3d.org/)
o added support for user defined clipping planes; RIB-import now also
  handles RiClipping
o views of type "Trim" now draw the bounds of the parametric space as
  a rectangle again
o added a new preference setting "AutoFocus" that arranges for all views and
  the main window to take over the focus automatically when the mouse pointer
  enters it (without the need to adapt any window manager configuration and
  also working fine on Win32)
o added support for the mouse wheel to the Win32 version
o RIB-export now writes different frame numbers for shadow maps and the
  image so that you may re-render e.g. just the image more easily even
  when the "ShadowMaps" preference setting is "Automatic"


[15. Oct 2002] Ayam 1.3:
========================
o bug fixes:
  - fixed memory leaks in the shadow map RIB export module
  - fixed ICurves crash for length 2
  - fixed insert and delete point action errors for drag mouse events
  - fixed errors with transformed MetaBall components (e.g. of type custom)
  - fixed broken scene change detection (that occured when the undo
    system was switched off using an "UndoLevels" preference setting of -1)
  - fixed wrong reference counter setting of material objects created
    by the RIB import plugin
  - fixed converted caps of Extrude objects losing their trimcurves
    when saved and then read again
  - fixed automatic cap generation for various tool objects
  - fixed picking of objects in instanced levels
  - fixed problems with shader/plugin search path names with spaces
  - fixed some dialogues not returning the focus to the main or the view
    window when closed with the Ok/Cancel-button
  - fixed property listbox context menu generating an empty Tcl error
    message on the Win32 platform
  - fixed setting of current filename for scenes loaded via command
    line argument
  - fixed broken detection of recursive instances for copy-and-paste and
    drag-and-drop operations with instance objects
  - fixed broken "zoom to object" action for instances with transformed
    master objects
  - fixed automatic instancing for cap objects
  - fixed broken notification of several tool objects without open view
    window (e.g. after loading a scene with no view windows)
  - fixed drawing of misplaced markers for the "rotate_about" and "find_u"
    modelling actions (when used with view actions such as "move_view")
  - fixed dropping of light or camera objects onto view objects updating
    the wrong view window sometimes
o added a permanent preview feature; a constantly open RIB stream
  to a (fast) RenderMan renderer like rgl immediately displays all
  changes in the scene without the need to repeatedly hit "Ctrl-r" and
  close the preview window again (due to the complex handling, this is
  a compile time feature, and not available in the distributed Ayam binaries)
o added manual control for the creation of ShadowMaps; for that,
  the preference setting "RIB-Export/ShadowMaps" is now a menu
  for the values "Never", "Automatic", and "Manual"; in "Manual" mode
  ShadowMaps may be rendered explicitly using the new view menu
  entry "View/Create ShadowMaps"; afterwards it is possible to render
  images without recreating the ShadowMaps all the time (e.g. for camera
  or material changes) even directly from a view window
o the "TclPrecision" preference setting has been moved to the "Misc"
  preferences section
o added balloon help for all preference settings
o added a "Locale" preference setting and a locale system, that allows to
  display language specific balloon help texts (german translations of
  various balloon help texts provided initially)
o the coordinate system (the root object) now also draws axis names (x, y, z)
o scene loading now blocks all mouse events from view windows to avoid
  problems with user input while loading scenes which lead to wrongly
  drawn views
o added a texture coordinates editor (main menu "Special/Tags/Edit TexCoords")
o added a "Remove Tag!" menu to the standard Tag property GUI
o added "Show All" and "Hide All" menu entries to the main menu
o replaced "setNC"/"getNC"/"setNP"/"getNP" scripting interface commands
  with the new "setPnt"/"getPnt" commands
o added a new object type PolyMesh (polygonal mesh)
o the RIB import plugin now also imports "Polygons", "GeneralPolygons",
  "PointsPolygons", and "PointsGeneralPolygons"
o added a new tool for the PolyMesh object; "mergePo", that merges a bunch
  of PolyMesh objects (e.g. created by importing a poorly structured RIB)
  into a single PolyMesh object
o improved the object picking for shaded views
o improved the MFIO (3DMF) Import Plugin: it now outputs more detailed
  error messages, supports import of the following additional primitives:
  PolyLine, Triangle, General Polygon, Polygon, and TriGrid; and
  supports now output of all NURBCurve/NURBPatch providing objects.
o added shader parsing plugins: "ayslb" for Air, "ayslx" for Aqsis,
  "ayso" for RDC, "ayslo" for PRMan, and "ayslo3d" for 3Delight
o added a new object type "ConcatNC" that concatenates multiple NURBS
  curves or NURBS curve providing objects to a single NURBS curve
o added a new object type "Clone" that creates n instances of its child
  object and transforms each instance by a specified transformation
o Ayam now remembers the state of the toolbox (open/closed) and the
  object selection widget (listbox or treeview) in the ayamrc file
o added a "RenderMode" preference setting that allows to switch between
  two different methods of forcing a renderer to render to the screen (via
  RiDisplay, necessary for e.g. PRMan and RDC; or via command line argument)
o added a select renderer feature (main menu "Special/Select Renderer")
  that allows to switch between different renderers more easily; currently
  supported are BMRT2.5, BMRT2.6, Aqsis, Air, 3Delight, RDC, and PRMan
o reorganized the "Main/Special" menu by introduction of cascaded sub-menus
o changed calculation of bevels for the Extrude object; the bevels are
  now more evenly sized; this may, however, lead to problems with caps,
  because the bevels may overlap themselves in corners of the extrusion;
  thus, if cap generation fails, reduce the radius of the bevels
o all RenderGUI windows now automatically try to raise themself, should
  they be obscured, e.g. by the renderer window (but just one time)


[09. Jul 2002] Ayam 1.2:
========================
o bug fixes:
  - fixed color select buttons in preferences not updating on "load defaults"
  - fixed missing RiSolidBegin/End for spheres with thetamax != 360
  - fixed RiAttribute tags not exporting when attached to material objects
  - fixed broken integer RiOption and RiAttribute declarations
  - fixed broken Camera property GUI of the Camera object
  - fixed broken "-h" command line option
  - fixed memory leaks in the Skin notification callback, while reading
    scenes, while clearing scenes, and while opening/closing view windows
  - fixed error connecting instances while loading certain scenes
  - fixed grid menu button not updating when switching a view to perspective
  - fixed writing of preferences and deleting of temporary files when the
    main window is closed to quit Ayam
  - fixed rotate about modelling action not redrawing all views
  - fixed direct point editing action crashing when the selection is
    changed or some points are selected (tagged), while the coordinate
    requester is open.
  - fixed incorrect side caps for revolve objects from certain open
    parameter curves (e.g. with B-Spline knot vectors)
  - fixed edit material feature selecting wrong objects under certain
    circumstances
  - fixed the TreeWidget generating sporadic error messages about
    a missing "_state" variable (using a backport of the bugfix for
    BWidgets bug #4324)
  - fixed Tcl error generated by the "Add" button of the preference
    setting "Main/Shaders", "Main/Scripts", and "Main/Plugins" (on
    Win32 and on Unix for path names with spaces).
o improved RIB export of quadric primitives with negative thetamax
o the mouse cursor now changes when the "alt rotate" action is in effect
o the modifier key for the "alt rotate" action is now configurable using
  "ayviewshortcuts(RotMod)" and "ayviewshortcuts(RotModKey)" respectively
o added a RIB import plugin
o added a new object type "PatchMesh"
o direct point editing now works for multiple selected objects
o resizing of the toolbox now works better for opaque resize
o shrink wrapping of the toolbox may now be turned off completely using
  "Preferences/Misc/ToolBoxShrink"
o added a checkbutton to the rendering GUI that controls ringing the
  bell when the rendering finishes
o added an object picking facility, you can now click in view windows
  to select objects (Bertrand Coconnier)
o the default action for view windows is now "Pick" (and not "None")
o added a reference card (a brief listing of all keyboard shortcuts)
  to the documentation
o improved shadow map creation: the RIB exporter now writes an
  additional file "<scene>.obj.rib", that contains the geometric
  primitives of the scene; furthermore, it is now possible to create
  shadow maps from custom lights (as long as the light shader contains
  arguments named "from", "to", or "coneangle")
o added shadow bias options to standard RiOption tag database
o the preference setting "RIB-Export/RIBFile" now allows a new special
  value "Scenefile" that works like "Scene" but strips the leading path
  from the scene file name (required by new shadow map RIB creation scheme)
o added a new tag type "TC" that holds texture coordinates
o the tag property GUI now displays just a certain number of characters
  from a tag value (this is adjustable via the new hidden preference
  setting "MaxTagLen")
o the edit tag dialogue is now resizable
o added some default RiOptions and RiAttributes to the default database
o improved the RiOptions and RiAttributes GUIs: they are now resizable
  and load the first value from the list of default values immediately
o added support for libslxargs; libslxargs may be used as replacement
  for libslcargs on platforms like MacOS X
o added drawing of a background image to view windows
o added two new component types to the MetaBalls custom object:
  cube and custom
o prepared some plugins to be combined statically into the binary
o added a show shortcuts feature to the main help menu
o improved the installation procedure
o the "UndoLevels" preference setting allows the undo system to be
  switched off completely using the special value "-1" now


[17. Jan 2002] Ayam 1.1:
========================
o bug fixes:
  - fixed custom lights always exporting as AreaLight to RIB
  - fixed tags not loading from scene files to root object
  - fixed handling of Shift-Tab for old (<8.3) Tk versions
  - fixed view-undo problems (e.g. not setting window titles correctly)
  - added missing declarations for some BMRT specific attributes/options
  - fixed focus handling for set_gridsize and set_fov dialogues
  - fixed unnecessary saving of undo states
  - fixed broken sweep (does not twist wildly for complex paths anymore)
  - fixed unnecessary notification for various modelling actions in
    conjunction with grids
  - fixed undo/redo not calling notification callbacks
  - fixed weight edit crashing when applied to objects without editable points
  - fixed menu entry "View/Close" creating Tcl errors on Win32
  - fixed reset weights action crashing
  - fixed "Set new shader!" dialogue creating a Tcl error when closed
    with window close button
  - fixed console menu not working on Win32
  - fixed forAllT scripting interface command
  - fixed rotation of view windows with Alt key held down
  - fixed new views blocking when created "under" the mouse pointer
  - fixed windows not saving their size to the preferences if TwmCompat
    is not enabled
  - fixed actions going to wrong views sometimes, when slowly redrawing
    (shading) views are present
  - fixed broken shaders and includes search paths
  - fixed deleting of temporary RIBs created with "View/Quick Render"
  - fixed undo not deleting selected points from objects properly
  - fixed wrong holes in caps of cap and extrude objects
  - fixed current level after loading of scenes
o added auto-scrolling to property with focus (<Tab> scrolls the property GUI)
o added "Scene changed!" warning requester to various scene destroying
  operations, like "File/New"
o added MetaBalls custom object
o light objects are now drawn in a yellow color, when not selected
o "File/New" now reloads the working environment scene and clears the
  current filename
o added grid selection icon and menu to view window menu bar
o "File/Save(As)" now adds filenames to the most recently used list too
o added "Special/Toggle Toolbox" menu entry to open/close the toolbox window
o added some example scripts to the documentation
o the current fov is now displayed in the set fov dialogue initially
o added a context menu to the property listbox and the object listbox
o improved checkbutton property gui element on Win32
o the toolbox looks much nicer now on Win32
o added preferences setting "Misc/ToolBoxTrans" that may be used to make
  the tool box window transient
o the tool box window may now be changed in size, with the row/column
  layout of the buttons adapting to these changes
o added "CreateMP" option to NURBS curves that inhibits creation of
  multiple points
o added "Help/Help on object" that directly displays the documentation
  of the selected type of object
o the preferences dialogue now comes up more smoothly
o added "Edit/Material" feature that finds the material object of a geometric
  object and selects it for editing (or creates and connects a new material)
o added "Special/Save Environment" feature that saves the current root
  object and views to the environment file (preference setting "EnvFile")
o added shaders not found in the BMRT distribution to "scn/shaders" to
  enable easier rendering of the example scenes
o RIB-Export: no archives are created for instances of objects that
  would not be exported anyway
o added a little label to the rendering GUI that displays the rendering time
o Due to a flaw in the design of the file format, Ayam 1.0b4 and below
  will not read Ayam 1.1 files. On the other hand, Ayam 1.1 reads files
  from 1.0b4 and below just fine.


[02. Oct 2001] Ayam 1.0 beta4:
==============================
o bug fixes:
  - Skin does not crash in interpolation mode, if two identical curves
    are present.
  - Weight edit does not crash anymore, if no objects are selected.
  - Tree Drag-and-Drop could crash Ayam when root object was dragged
    to certain targets.
  - Reading a scene via MostRecentlyUsed list sets internal scene
    filename correctly now.
  - Improved picking of points with arrows (e.g. last point of a NURBS curve).
  - Shading with material color (preference setting "UseMatColor") is now
    working for all objects.
  - Finally? fixed orientation detection routine for 2D curves, thus
    improving automatic cap generation for various object types.
  - Views do not get wrong settings while loading scenes or fast switching
    of view windows on slower machines anymore.
  - "forAll", "forAllT", and consequently "Edit/Paste Property" now work
    correctly for nested object hierarchies.
  - ...
o 3DMF import/export plugin revived.
o Preferences dialog looks much nicer now (uses a notebook for
  category selection, "Shaders" GUI-element uses the tooltip
  mechanism to display all paths of the entry at once now).
o Direct rendering of views creates a small GUI consisting of
  a progressbar and a cancel button (to stop the rendering!) now.
  Use "Prefs/RIB-Export/RenderUI" to enable and "Prefs/RIB-Export/RenderPT"
  to configure.
  This is disabled on Win32, since Tcl is not able to execute a kill
  program on this platform.
o Some User-Interface-Elements (of property GUIs) allow default
  values now.
o Added object type "Cap", that creates a cap from planar
  NURBS curves.
o Added automatic loading of custom objects when reading Ayam
  scene files.
o Implemented automatic cap generation for the Sweep object.
o Implemented automatic cap generation for the Skin object.
o Improved "Direct-Point-Edit" mode, you may select different points
  now, while the coordinate requester is open. Additionally, it is
  checking now, whether notification and redraws are really necessary.
o Added keyboard shortcuts to Most-Recently-Used file menu entries.
o SDK reworked.
o Plugins moved to "plugins" directory.


[26. Jul 2001] Ayam 1.0 beta3:
==============================
o a whole lot of bug fixes
o Mops Import much improved
  - imports now ICurves and Materials
  - GLU display mode and sampling rate settings may
    be reset to global settings while importing
o added "Automatic Instancing"
o added RIB Export preference setting "ExcludeHidden"
o tree widget blocks the GUI now on long update operations
o internal Tcl/Tk errors are now redirected to the console
o added some example scenes
o added Setup.txt, Changes.txt


[12. Jun 2001] Ayam 1.0 beta2:
==============================
o some bug fixes including a fix for a serious memory leak in the
  notification callbacks of the extrude/revolve tool objects


[31. May 2001] First Public Release (Ayam 1.0 beta1)
====================================================
