1. XVR / Halca basics Virtual Environments 2009 Aitor Rovira Will Steptoe

2. XVR functions onInit(){}//initialize all objects onFrame()//rendering instruction. This is the //only place where the openGL context is //available. { SceneBegin();... SceneEnd(); } onTimer(){} //frame independent source code onExit(){} //free allocated memory and kill all processes

3. Interaction Keyboard() Mouse() CVmJoystick() GUI Tracking device: getTrackerPos(TRACKER_ID); getTrackerRot(TRACKER_ID); getTrackerJoy(TRACKER_ID); getTrackerButtons(TRACKER_ID);

4. Navigation – Head Tracking Head tracker perspective is implicit in the application: SceneSetParam(VR_HEADTRACKER,1);

5. Navigation - Camera var CameraPos = CameraGetPosition(); var CameraDir = CameraGetDirection(); … CameraSetPosition(CameraPos); CameraSetDirection(CameraDir);

6. Scene render.aam contains the information about meshes and materials. (The exporter is available for Max and Blender) Var mesh; Var object; onInit() { mesh = CVmNewMesh("myAAMfile.aam"); obj = CVmObj(); obj.LinkToMesh(mesh); } onFrame() { obj.Draw(); }

7. Character animation – Halca HALCA library for character animation. Halca input format: cal3D. Exporter available for Max. Exporting in cal3D: Install plug-in (place.dll and.dle into Max folder) How to export: –New export options in File  Export. –Drag and drop.ms script file.

8. Character Animation – cal3D Cal3D files:.XSF /.CSF: skeleton.XMF /.CMF: mesh.XSF /.CSF: material.XAF /.CAF: animation

9. Character animation Include avatars.s3d in the project (don’t modify this file!) Call initAvatars(); Load Avatars using Avatars.AddCharacter(, ); Run an animation using any of these instructions: Avatars.ExeAct(),Avatars.ExeActPart, Avatars.BlendCycle()

10. References XVR website: http://www.vrmedia.it/http://www.vrmedia.it/ HALCA website http://www.lsi.upc.edu/~bspanlang/animation/avatarslib/doc XVR wiki:http://wiki.vrmedia.ithttp://wiki.vrmedia.it XVR forums:http://forums.vrmedia.ithttp://forums.vrmedia.it XVR documentation