FGFS-4.1/OpenSceneGraph
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Moved osgGLUTsimple and osgGLUTkeyboardmouse across to using osgGA::SimpleViewer

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This commit is contained in:
Robert Osfield
2006-09-30 14:12:36 +00:00
parent 2ed98b56c9
commit 1da298f919
4 changed files with 30 additions and 110 deletions
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45
examples/osgGLUTsimple/osgGLUTsimple.cpp
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@@ -12,36 +12,16 @@
#else
# include <GL/glut.h>
#endif
#include <osg/Timer>
#include <osgUtil/SceneView>
#include <osgGA/SimpleViewer>
#include <osgDB/ReadFile>
osg::ref_ptr<osgUtil::SceneView> sceneView;
osg::Timer_t start_tick;
unsigned int frameNum;
osg::Matrix viewMatrix;
osg::ref_ptr<osgGA::SimpleViewer> viewer;
void display(void)
{
// set up the frame stamp for current frame to record the current time and frame number so that animtion code can advance correctly
osg::ref_ptr<osg::FrameStamp> frameStamp = new osg::FrameStamp;
frameStamp->setReferenceTime(osg::Timer::instance()->delta_s(start_tick,osg::Timer::instance()->tick()));
frameStamp->setFrameNumber( frameNum++ );
// pass frame stamp to the SceneView so that the update, cull and draw traversals all use the same FrameStamp
sceneView->setFrameStamp( frameStamp.get() );
// set the view
sceneView->setViewMatrix( viewMatrix );
// do the update traversal the scene graph - such as updating animations
sceneView->update();
// do the cull traversal, collect all objects in the view frustum into a sorted set of rendering bins
sceneView->cull();
// draw the rendering bins.
sceneView->draw();
// update and render the scene
viewer->frame();
// Swap Buffers
glutSwapBuffers();
@@ -50,8 +30,8 @@ void display(void)
void reshape( int w, int h )
{
// update the viewport dimensions, in case the window has been resized.
sceneView->setViewport( 0, 0, w, h );
// update the window dimensions, in case the window has been resized.
viewer->getEventQueue()->windowResize(0, 0, w, h );
}
int main( int argc, char **argv )
@@ -80,17 +60,12 @@ int main( int argc, char **argv )
glutReshapeFunc( reshape );
// create the view of the scene.
sceneView = new osgUtil::SceneView;
sceneView->setDefaults();
sceneView->setSceneData(loadedModel.get());
viewer = new osgGA::SimpleViewer;
viewer->setSceneData(loadedModel.get());
// initialize the view to look at the center of the scene graph
const osg::BoundingSphere& bs = loadedModel->getBound();
viewMatrix.makeLookAt(bs.center()-osg::Vec3(0.0,2.0f*bs.radius(),0.0),bs.center(),osg::Vec3(0.0f,0.0f,1.0f));
// record the timer tick at the start of rendering.
start_tick = osg::Timer::instance()->tick();
frameNum = 0;
viewer->getCamera()->setViewMatrixAsLookAt(bs.center()-osg::Vec3(0.0,2.0f*bs.radius(),0.0),bs.center(),osg::Vec3(0.0f,0.0f,1.0f));
glutMainLoop();
return 0;