Commit Graph

1184 Commits

Author SHA1 Message Date
Robert Osfield
d36e302573 Added OpenThreads mutex to protect ref()/unref(). 2004-07-20 05:34:02 +00:00
Robert Osfield
0fb5733f13 Added support for --tile-image-size <size>, --tile-terrain-size <size> and --comment <string>
command line options into osgTerrain::DataSet + osgdem.
2004-07-19 09:03:50 +00:00
Robert Osfield
0acbe077fa Added support for matix manipulator setHomePosition(,,) 2004-07-12 19:54:54 +00:00
Robert Osfield
6fd4677868 Added OPTIMIZER_TEXTURE_SETTINGS pass to Optimizer, which enables
unref image data after apply, client storage hint.
2004-07-12 13:20:18 +00:00
Robert Osfield
ba295ccab7 Added a more flexible variable on the textured quad generation function 2004-07-12 01:01:00 +00:00
Robert Osfield
363d13d7ce Added CLUSTER_CULLING mask to CullSettings, and modified the ClusterCullingCallback
to use the mask to see if cluster culling is enabled or disabled.
2004-07-11 21:46:23 +00:00
Robert Osfield
3f4b8e9034 Fixed cluster culling. 2004-07-09 20:58:43 +00:00
Robert Osfield
7ef8b14bf0 VS.NET Warning fixes from Stephane 2004-07-09 15:41:50 +00:00
Robert Osfield
504dd515d3 Improvements to the handling of coordinate system nodes 2004-07-09 15:21:33 +00:00
Robert Osfield
0869da6e67 From Mike Weiblen, "mods based on those Bob Kuehne posted.
- updated to the latest ARB-approved GLSL version query mechanism.
- updated enums to the latest official glext.h
- fixed some TODOs"
2004-07-09 08:22:24 +00:00
Robert Osfield
8d325c24ff Added new coputeActiveCooridnateSystemNodePath method 2004-07-08 22:28:15 +00:00
Robert Osfield
8a44435e4d Made the local storage of a StateAttribute* be a ref_ptr<> 2004-07-08 22:11:42 +00:00
Robert Osfield
89a4dcbbd3 Added GL_TEXTURE_DEPTH #define for Win32 build 2004-07-06 06:13:34 +00:00
Robert Osfield
cce00c475b Added suppor for copying mipmaps of compressed textures 2004-07-05 21:09:30 +00:00
Robert Osfield
2ce192f0ae Change the light in LightSource from a generic osg::StateAttribute to
a osg::Light.
2004-07-02 14:46:24 +00:00
Robert Osfield
4ba3f7cad3 Added setFunction and setReferenceValue method 2004-07-02 14:45:36 +00:00
Robert Osfield
0c38189018 Moved the radius parameter from PageLOD into LOD. 2004-07-01 13:53:30 +00:00
Robert Osfield
a8ee967f14 Added support for using pixel size control of LOD levels. 2004-06-30 19:07:05 +00:00
Robert Osfield
ae3b1454e8 Completed support for "--levels min max" option where the levels that a
source imager or DEM contributes to.
2004-06-30 14:37:06 +00:00
Robert Osfield
656762edbb Changed const int to #define for VS6.0 build 2004-06-30 07:26:02 +00:00
Robert Osfield
888d9e2a25 From Pavel Moloshtan, added support for storing primitive sets in VBO's 2004-06-29 15:04:38 +00:00
Robert Osfield
f96622ebf9 From Matt Burke, typo fix on getMinimumDistance(). 2004-06-28 20:47:39 +00:00
Robert Osfield
20de9666dd From Terry Welsh, added support for reading and writing osg::FragmentProgram
local parameters.
2004-06-28 10:00:21 +00:00
Robert Osfield
63aa9b857d Added first stage of support for "--levels min max" in osgdem/osgTerrain where
this option controls which levels that an associated imager or DEM contributes
to the final model.
2004-06-17 14:39:16 +00:00
Robert Osfield
06aa06d686 Added support for setting texture units in the new TexGenNode. 2004-06-17 14:02:15 +00:00
Robert Osfield
85344ebdaf Fixed deprecated #idef 2004-06-14 20:14:54 +00:00
Robert Osfield
3eea9dc1a7 Fixed #ifdef USE_DEPRECATED_API 2004-06-14 20:11:28 +00:00
Robert Osfield
2d35b3cc27 Changed Billboard::g/setPos(..) to g/setPosition(..). 2004-06-14 19:34:43 +00:00
Robert Osfield
7367c1cee5 Added extra constructor to make it more convinient to create AlphaFunc. 2004-06-14 19:30:20 +00:00
Robert Osfield
33bc3820ac Tweaked comments. 2004-06-14 19:20:07 +00:00
Robert Osfield
1e2aae1634 Removed old UserData comment which was non longer relevant. 2004-06-14 19:17:32 +00:00
Robert Osfield
78d075eb24 Added new TexGenNode class for positioning tex gens. 2004-06-14 19:11:04 +00:00
Robert Osfield
8b2ba07653 Compile fix w.r.t new CoordinateSystemNode. 2004-06-09 20:18:58 +00:00
Robert Osfield
f75a7c6294 Added CoordinateSystemNode::set(const CoordinateSystemNode&) method to conviniently
set up a coordindate system.
2004-06-09 15:11:27 +00:00
Robert Osfield
a8ce6b01d6 Added CoordinateSystem::s/getFormat(). 2004-06-09 15:00:03 +00:00
Robert Osfield
893eaaa3f4 Cleaned up float vs double types in Vec*d and Vec2f classes 2004-06-09 13:06:12 +00:00
Robert Osfield
65d0293778 Added options for controlling mipmapping and aniso-tropic filtering. 2004-06-08 13:58:36 +00:00
Robert Osfield
ba7a7fe638 Updates to FlightManipulator 2004-06-08 12:31:33 +00:00
Robert Osfield
22ec86114d Updates to the terrain manipulator. 2004-06-08 07:32:08 +00:00
Robert Osfield
eec378a885 Moved the osg::ClusterCullingCallback into into own header and source file. 2004-06-07 15:05:22 +00:00
Robert Osfield
1f4417ab2b Fixed the Vec*d class so there have value_type set to double. 2004-06-04 16:32:00 +00:00
Robert Osfield
bfd1286b25 Add clamping to 0..1 bounds for each of the r,g,b,a components in
the CubeMapGenerator::set_pixel() method.
2004-06-04 11:35:13 +00:00
Robert Osfield
2cf45b50c9 From Terry Welsh, added checks to incoming Geometry for existance of normals,
and if they are present use these to compute the tanget and binormals
vectors perpendicular to existing normals.
2004-06-04 08:24:13 +00:00
Robert Osfield
5d97f7ec92 Added support for a single color in a ColorRange 2004-06-03 10:10:41 +00:00
Robert Osfield
b5366cbda6 Added DataSet::s/getSkirtRatio() method to allow control of how deep to
make the skirts around tiles.
2004-06-02 14:15:08 +00:00
Robert Osfield
344beecede Added derived reqiestRedraw() and requestContinueUpdate() methods for
debugging purposes.
2004-06-02 14:13:11 +00:00
Robert Osfield
7f94839e94 Added setPosition and setWidth methods into ScalarBar and changed the
implementation to use these values to position and set the size of the
scalar bar.  Also made the characterSize value a float rather than
the previous int.
2004-06-02 12:37:14 +00:00
Robert Osfield
8edafc3b22 Updated clampProjectionMatrix methods 2004-05-25 20:35:14 +00:00
Robert Osfield
ab2b817e61 Made improvements to the handling of small rotations in Quat and
TerrainManipulator
2004-05-20 23:25:26 +00:00
Robert Osfield
fee33001fd Fixed warnigs on VS. 2004-05-20 13:54:53 +00:00
Robert Osfield
f8daf206ab Improved support for new double Vec* classes 2004-05-20 12:57:06 +00:00
Robert Osfield
eba53406d4 Fixed typo of Vec3f to Vec2f 2004-05-20 10:42:05 +00:00
Robert Osfield
f02c75f5ea Added Vec2d, Vec3d and Vec4d classes, and remapped Vec2, Vec3 and Vec4 to
Vec2f, Vec3f an Vec4f respectively, with typedef's to the from Vec* to Vec*f.
2004-05-20 10:15:48 +00:00
Robert Osfield
17214df1fc Added GL_SCALE_NORMAL define to get round compilation against GL1.1 headers 2004-05-19 09:17:36 +00:00
Robert Osfield
9ff7933d96 Added GL_RESCALE_NORMAL to allow compilation with GL1.1 headers 2004-05-19 09:12:52 +00:00
Robert Osfield
2cd4bd513a Changed how the rotation and panning are managed, therby improving the
handling of the center point going over a pole.
2004-05-17 22:22:24 +00:00
Robert Osfield
a62699b015 Improved the panning support, and added s/getRotationMode(..) to allow
users flip between a trackball rotation style and an azim,elevation style.
2004-05-17 15:50:44 +00:00
Robert Osfield
71150e96dc From Ruben, fix for gcc 3.4 build 2004-05-17 10:21:30 +00:00
Robert Osfield
ae5aefac0e Added the beginings of new osgParticle Explosion, Fire and SmokeEffects.
Added support for generation explosion, fire and smoke effects in osgsimulation
2004-05-13 22:09:23 +00:00
Robert Osfield
86d323752d From Corbin Holtz, "I have completed my mods to the OpenFlight loader (modified files are
attached):
   * Light point strings using the REPLICATE opcode should now be supported
(>=15.6?)

   * Directional lights should now work as in Performer using a viewing
frustrum defined by a direction vector, horizontal angular width, vertical
angular width, and roll angle about the direction vector.  The current
directional light implementation had some bad assumptions which caused
problems with direction vectors not on the XY plane.

   * IVE and OSG reader/writers were updated as appropriate"
2004-05-08 22:18:38 +00:00
Don BURNS
4ebb2ddd5a Ooops... previous fix didn't work, corrected. 2004-05-08 18:41:18 +00:00
Don BURNS
3b92e02f29 Fixed a define for __sgi. Irix does not allow dlsym(0L, ...) without
calling dlopen() first, just like __sun
2004-05-08 18:37:26 +00:00
Robert Osfield
3d3199017e From Ken Sewel, added osgDB::fileType(filename) method and usage of this
new function in osgdem to automatcally handle directories as part of the
regular -d and -t options.
2004-05-08 06:35:32 +00:00
Robert Osfield
26f80f1341 From Marco Jez, replacement of local mutex lock/unlock with ScopedLock. 2004-05-07 19:55:12 +00:00
Robert Osfield
bdeb391a00 From Mike Weiblen, added new rot, scale and trans pseudo loaders. 2004-05-07 15:18:59 +00:00
Robert Osfield
aec98259a8 Added support for osgDB::ReaderWriter::ReadResult::FILE_LOADED_FROM_CACHE 2004-05-07 13:43:41 +00:00
Robert Osfield
0307463746 Added GL_TEXTURE_RECTANGLE define 2004-05-07 12:40:21 +00:00
Robert Osfield
48dad727b1 From Bob Kuehne, added getting of the max number of texture units in
the Texture::Extension object
2004-05-07 11:28:55 +00:00
Robert Osfield
47dd0ece28 Added new TerrainManipulator to osgGA, and new callback for getting the
CoordinateFrame for a given X,Y,Z location.
2004-05-06 11:01:16 +00:00
Robert Osfield
1a09763515 Removed Terrain.cpp and header from CVS repository.
Added support for setting the maximum visiable distance of top level
to osgTerrain::DataSet, and debugging code which insert a axes.osg
above each tile.
2004-05-06 10:59:08 +00:00
Robert Osfield
eedfe44a1c Fixed computeLocalTransform to generate correct orientation of local coordinate
frame.
2004-05-06 10:54:58 +00:00
Robert Osfield
8bdb68ef97 Added support for reading environmental varables in CullSettings. 2004-05-05 09:16:12 +00:00
Robert Osfield
9db6e84d3d Cleaned up osgTerrain, renaming the Terrain and Renderer class to
HeightFieldNode and HeightFieldRender to better reflect their function.
Removed the GeoMipMapRenderer.cpp stub as the implemention will be left
to a plugin.  Added Version functions.
2004-05-03 20:42:58 +00:00
Robert Osfield
b7746ff56e Added support for automatically finding CoordinateSystemNode's in the
scene graph and then using them to set up the CoordinateFrame used
by the camera manipulators.
2004-05-03 12:04:25 +00:00
Robert Osfield
04798b4e63 Fixed compile error 2004-05-03 07:42:30 +00:00
Robert Osfield
fced94fab3 Added support for decoration of the osgTerrain::DataSet generated databases
with a CoordinateSystemNode which reflect the coordinate system of the
database.

Added support for reading and writing CoordianteSystemNode into the .osg
and .ive formats.
2004-05-02 21:50:15 +00:00
Robert Osfield
6223c11570 Made the generation of QUADS for strip with the length of 4 an option. 2004-05-02 15:43:55 +00:00
Robert Osfield
5836d60fbd Added osg::CullSettings class as a way of collecting all the various
settings related to the cull traversal in one place, so we can keep APIs
for settings these values more consistent.
2004-04-30 15:35:31 +00:00
Robert Osfield
7596b3b361 Added getKeyManipMap() method 2004-04-30 09:04:10 +00:00
Robert Osfield
0ba2d26b1a Added Support for cluster culling.
Removed osgTerrain::CoordinateSystem which is now replaced by
osg::CoordinateSystemNode.
2004-04-29 22:22:22 +00:00
Robert Osfield
5d79eb1c9d Added support for fine grained computation of the near plane, by taking
into account individual primitives culled against the view frustum.

Added better support for computing the near far for billboards.
2004-04-29 22:21:06 +00:00
Robert Osfield
522ffca03c Added support for tracking a user specified CoordinateSystemNode for the
CoordinateFrame to use in the camera manipulation
2004-04-29 22:19:57 +00:00
Robert Osfield
f81447e839 Added support for handling a user define CoordinateFrame in the flight
and trackball manipulators with API access via the MatrixManipulator
base class
2004-04-29 22:18:54 +00:00
Robert Osfield
36cd372847 Added osg::CoordinateSystemNode 2004-04-29 22:16:50 +00:00
Robert Osfield
678c456fc8 Made s/getBackgroundColor() deprecated, and add in new s/getClearColor() to
replace it.
2004-04-27 19:09:58 +00:00
Robert Osfield
9ef61d83e0 Added extra parameter policy enum 2004-04-23 14:47:54 +00:00
Robert Osfield
91516305d9 Added support for protecting points from being simplified.
Added back in support for generation of skirts in osgTerrain::DataSet.
2004-04-22 13:36:30 +00:00
Robert Osfield
017983429b Added getBoundingBox() method to osg::Geode to provide a closer bound
of the bounding volume of a Geode to be tracked.  This sits alongside
the existing getBound() method which returns a bounding sphere.
2004-04-22 10:47:12 +00:00
Robert Osfield
e3a7db4559 Added update() method to enable the ScaleBar to be updated after changes
to attached classes.
2004-04-22 10:44:23 +00:00
Robert Osfield
061244056d Added support for using the error metric to guide the simplficiation process 2004-04-19 23:08:30 +00:00
Robert Osfield
a1caa14a61 Added osgsimplifier example. 2004-04-18 16:15:49 +00:00
Robert Osfield
715cdcf5e2 From Don Tidrow, changed "setupGLExtenions()" to "setupGLExtensions()" in Texture and
Texture.cpp
2004-04-16 22:50:41 +00:00
Robert Osfield
7d5e44205d Fixed bogus read*Implementation calls in ReadFileCallback. 2004-04-13 16:03:18 +00:00
Robert Osfield
c80de01fd7 Further work on the new osgUtil::Simplifier. 2004-04-12 21:29:31 +00:00
Robert Osfield
97ef4985f7 From Eric Wing, clean ups for OSX support. 2004-04-11 21:21:38 +00:00
Robert Osfield
2a6e155d03 From Alberto Farre, changed the cache hint option in read*() calls from being
a bool to a enum osgDB::Registru::CacheHintOptions to be used a bit mask flag.

From Robert Osfied, added osgDB::Registry::ReadFileCallback and
osgDB::Registry::WriteFileCallback to allow customizition of read and write
calls.
2004-04-10 16:11:56 +00:00
Robert Osfield
ae7ceae631 From Paul Martz, added support for OpenFlight15.8 LightPointSystems 2004-04-10 11:30:16 +00:00
Robert Osfield
51c8655630 Added beginning of new osgUtil::Simplifier 2004-04-08 11:27:01 +00:00
Robert Osfield
6e854d04c7 Fixes from Per Månsson for Win32 build 2004-04-06 16:01:05 +00:00
Robert Osfield
01cbfd6715 Added local transform support. Fixed skirt generation to work during geocentric
transformations. Fixed output of image files so that compressed textures are
turned off when external image files are required.
2004-04-05 15:39:33 +00:00
Robert Osfield
2efea80728 From Nathan Cournia, fix to = operator, was eroneous written as an == operator. 2004-04-05 09:00:37 +00:00
Robert Osfield
398fa56bb4 Prelimary work on adding support for local tile transforms 2004-04-04 15:33:26 +00:00
Robert Osfield
dbc3dbc5fa Added scaling of the PagedLOD range to be relative to the radius of children. 2004-04-01 13:09:05 +00:00
Robert Osfield
9d2002f3c4 Added preliminary support for converting datasets into geocentric coords 2004-03-31 22:31:46 +00:00
Robert Osfield
b67858f388 Added osgTerrain::EllipsodeTransform helper class for converting to and from
lat, long, height to geocentric X,Y,Z and back.
2004-03-31 15:50:30 +00:00
Robert Osfield
663801c0c8 Clean up freeing of no longer required tiles 2004-03-31 09:20:46 +00:00
Robert Osfield
316c646a8f From David Fries, add init() call to SphereSegment constructor, and
new get methods for draw mask and color.
2004-03-31 08:52:47 +00:00
Robert Osfield
2f2030aba4 Fixed the boundary equalization 2004-03-30 21:13:08 +00:00
Robert Osfield
a1b46de936 Added normal generation in polygonal tile generation, and add --wtk option
for setting coord systems in osgdem
2004-03-29 22:26:51 +00:00
Robert Osfield
e44176a7aa Fixed the handling begin()/vertex()/end() sequences in TriangleIndexFunctor. 2004-03-29 12:28:40 +00:00
Robert Osfield
cad1e2a075 Groundwork for adding support for polygonal tiles 2004-03-29 10:45:58 +00:00
Robert Osfield
aa52005b87 Added empty() method to Geometry to facilitate tests for removing empty
geometry from the scene graph.

Added removal of empty geometry leaves from within the RemoveEmptyNodeVisitor
2004-03-29 10:24:16 +00:00
Robert Osfield
a48460c27c Added support for recording the animation paths relative to an 0.0 start
time.
2004-03-26 11:04:37 +00:00
Robert Osfield
c46855976c Added empty() method as a convinience method for setting checking whether
an animation path contains any control points
2004-03-26 10:48:29 +00:00
Robert Osfield
ec1fd733b8 Added TextureType and GeometryType parameters to DataSet. These will be used
to control what type of database is generated.
2004-03-21 12:17:44 +00:00
Robert Osfield
88bbdb325d Implemented support for overriding the coordinate system and geo transform
using in generate of databases.
2004-03-20 18:32:49 +00:00
Robert Osfield
02f9ce48bc Added ArgumentParser::Parameter class to make the argument parsing much more
flexible, and to simplifying the API.  The read(,,,) methods now take
Parameter objects as arguments, and this Parameter adapt what ever basic
type is passed in, so is able to transparently handle float, double, int,
unsigned int & strings.
2004-03-19 22:03:09 +00:00
Robert Osfield
28214337a3 Moved the LineSegment destructor from the header to the source to avoid
compilation problems under MingW.
2004-03-19 09:18:21 +00:00
Robert Osfield
3fea25a0a1 From Marco Jez, updates to osgParticle, with integration of changes from Tom
Jolly.
2004-03-17 20:31:55 +00:00
Robert Osfield
e2e779bed7 Added support for generation of PagedLOD databases in osgTerrain::DataSet 2004-03-16 16:54:08 +00:00
Robert Osfield
84562208d0 Added support for controlling the type of destiation database to create into
osgTerrain::DataSet.
2004-03-15 15:47:22 +00:00
Robert Osfield
86dbbb2874 Added PrimitiveIndexFunctor for better support of TriangleIndexFunctor 2004-03-14 21:54:17 +00:00
Robert Osfield
28759baa98 From Marco Jez, added support NVidia extension to imager formats. 2004-03-14 15:08:12 +00:00
Robert Osfield
e082008d8a Moved osgTerrain::DataSet from the osgdem example into osgTerrain. Added
various improvements.
2004-03-11 16:14:25 +00:00
Robert Osfield
9f6383f5dd Added TextureRectangle(Image*) contructor. 2004-03-09 14:59:33 +00:00
Robert Osfield
a3d99d88ff Added float s, float t parameters to createTexturedGeometry function 2004-03-09 14:58:50 +00:00
Robert Osfield
8b47c9c85d Preliminary work on general support of video textures. 2004-03-09 09:42:07 +00:00
Robert Osfield
358743f999 Added support for APPLE_client_storage of textures. 2004-03-08 17:09:58 +00:00
Robert Osfield
136db7b63a Clean up of headers. 2004-03-08 11:53:12 +00:00
Robert Osfield
ce79e6f400 Added osgGA::TrackballManipulator::g/setMinimumZoomScale() method. 2004-03-08 11:41:57 +00:00
Robert Osfield
bd37f999c4 From Bob Kuehne, change on __DARWIN_OSX__ define to __APPLE__ 2004-03-08 11:02:05 +00:00
Robert Osfield
ccefa05523 Clean up of headers. 2004-03-07 14:21:11 +00:00
Robert Osfield
89d9ca11c9 From Marco Jez, on behalf of Farshid Lashkari. Details from Marco's email: "I've just received an addition to osgParticle from Farshid Lashkari. It enhances the generation of texture coordinates on particles so that animated textures can be used, with the current frame of animation being computed from each particle's current age.
Clients just have to call Particle::setTextureTile() and specify the number of
horizontal and vertical tiles that make the animation up in the texture image."
2004-03-05 15:44:15 +00:00
Robert Osfield
8540414ae0 Removed redundent getAssociatedModes() 2004-03-04 14:32:27 +00:00
Robert Osfield
c8b8a81052 Changed StateAttribute::getAssociatedModes(std::vector<GLMode>&) across
to StateAttribute::getModeUsage(StateAttribute::ModeUsage&).
2004-03-03 15:38:22 +00:00
Robert Osfield
4aa7afedf3 Removed include <iostream> where possible, replacing with istream or ostream and changing
std::cout/cerr to osg::notify().
2004-03-03 13:27:21 +00:00
Robert Osfield
f8f1456654 From Ruben, addition of osg::PointSprite and osgpointsprite example. 2004-03-02 22:36:11 +00:00
Robert Osfield
e2469aece9 From David Jung, added support for osg::Capsule shape 2004-03-02 20:33:00 +00:00
Robert Osfield
20252db7ff From Brede Johansen, added support for incrementing animation of DOFTransform
w.r.t. time rather than frame number.
2004-03-02 16:53:21 +00:00
Robert Osfield
cfe376b644 From Paul Martz, with a couple of mods by Robert Osfield:
"Changes to return the lat/long origin of an
OpenFlight model as userData of the root node object."
2004-03-02 16:12:11 +00:00
Robert Osfield
1b7b65389e From Brad Christiansen: added _matrixDirty=true to AutoTransform::setPosition(..)
method.  From Robert Osfield, probagated this change to other AutoTransform set
methods.
2004-03-02 15:27:59 +00:00
Robert Osfield
8a1c39bffb Fixed warning message 2004-03-02 15:26:31 +00:00
Robert Osfield
ac812539d8 Added scale parameter into PositionAttitudeTransform.
Added pivotPoint parameter into AnimationPathCallack.
2004-02-22 11:58:44 +00:00
Robert Osfield
d2491f6750 Added AnimationPathCallback::s/getTimeOffset and s/getTimeMultiplier() methods. 2004-02-21 16:56:23 +00:00
Robert Osfield
a6541a27bf Added missing _pause(false) into AnimationPathCallback default contructor. 2004-02-20 20:47:35 +00:00
Robert Osfield
a992676a98 Added missing initialization in the AnimationPathCallback constructor. 2004-02-20 20:10:51 +00:00
Robert Osfield
ebbf92e43c Added Material::operator = 2004-02-20 11:51:14 +00:00
Robert Osfield
b73d3c3e7f Fixed typo in inline docs on the default value of the clear stencil value 2004-02-19 10:10:25 +00:00
Robert Osfield
eca2fc2837 Improved osgSim::SphereSegmenet's handling of transparancy. 2004-02-12 01:15:37 +00:00
Robert Osfield
61cb27806f From Brad Christiansen, fix to enable AutoTransform to keep track of window
size/perspective changes
2004-02-11 10:19:52 +00:00