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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2
examples/osgGLUTkeyboardmouse/GNUmakefile
View File

@ -4,7 +4,7 @@ include $(TOPDIR)/Make/makedefs
CXXFILES =\
osgGLUTkeyboardmouse.cpp\
LIBS += -losgDB -losgUtil -losg $(GLUT_LIBS) $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
LIBS += -losgGA -losgDB -losgUtil -losg $(GLUT_LIBS) $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
INSTFILES = \
$(CXXFILES)\

91
examples/osgGLUTkeyboardmouse/osgGLUTkeyboardmouse.cpp
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@ -13,41 +13,16 @@
# include <GL/glut.h>
#endif
#include <osg/Timer>
#include <osgUtil/SceneView>
#include <osgGA/SimpleViewer>
#include <osgGA/TrackballManipulator>
#include <osgDB/ReadFile>
osg::ref_ptr<osgUtil::SceneView> sceneView;
osg::Timer_t start_tick;
unsigned int frameNum;
int lastx, lasty;
osg::Vec3 centerPos;
float viewRot, viewElev, viewRadius;
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
osg::Vec3 viewPos(
viewRadius * cos(viewElev) * sin(viewRot),
viewRadius * cos(viewElev) * cos(viewRot),
viewRadius * sin(viewElev));
sceneView->setViewMatrixAsLookAt( centerPos-viewPos, centerPos, osg::Vec3(0.0f,0.0f,1.0f) );
// 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 graph
viewer->frame();
// Swap Buffers
glutSwapBuffers();
@ -56,26 +31,19 @@ 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 );
}
void mousedown( int /*button*/, int /*state*/, int x, int y )
void mousebutton( int button, int state, int x, int y )
{
lastx = x;
lasty = y;
if (state==0) viewer->getEventQueue()->mouseButtonPress( x, y, button+1 );
else viewer->getEventQueue()->mouseButtonRelease( x, y, button+1 );
}
void mousemove( int x, int y )
{
viewRot += (x - lastx) / 100.0f;
viewElev -= (y - lasty) / 100.0f;
if( viewElev < -1.5f ) viewElev = -1.5f;
if( viewElev > 1.5f ) viewElev = 1.5f;
lastx = x;
lasty = y;
viewer->getEventQueue()->mouseMotion( x, y );
}
void keyboard( unsigned char key, int /*x*/, int /*y*/ )
@ -83,22 +51,15 @@ void keyboard( unsigned char key, int /*x*/, int /*y*/ )
switch( key )
{
case 27:
exit(0);
break;
case ' ':
viewRot = 0.0f;
viewElev = 0.0f;
glutDestroyWindow(glutGetWindow());
break;
default:
viewer->getEventQueue()->keyPress( (osgGA::GUIEventAdapter::KeySymbol) key );
viewer->getEventQueue()->keyRelease( (osgGA::GUIEventAdapter::KeySymbol) key );
break;
}
}
void menu( int selection )
{
std::cout << "menu selection = " << selection << std::endl;
}
int main( int argc, char **argv )
{
glutInit(&argc, argv);
@ -123,30 +84,14 @@ int main( int argc, char **argv )
glutCreateWindow( argv[0] );
glutDisplayFunc( display );
glutReshapeFunc( reshape );
glutMouseFunc( mousedown );
glutMouseFunc( mousebutton );
glutMotionFunc( mousemove );
glutKeyboardFunc( keyboard );
glutCreateMenu( menu );
glutAddMenuEntry( "item 0", 0 );
glutAddMenuEntry( "item 1", 1 );
glutAttachMenu( GLUT_RIGHT_BUTTON );
// create the view of the scene.
sceneView = new osgUtil::SceneView;
sceneView->setDefaults();
sceneView->setSceneData(loadedModel.get());
// initialize the view to look at the center of the scene graph
const osg::BoundingSphere& bs = loadedModel->getBound();
centerPos = bs.center();
viewRot = 0.0f;
viewElev = 0.0f;
viewRadius = 2.0f * bs.radius();
// record the timer tick at the start of rendering.
start_tick = osg::Timer::instance()->tick();
frameNum = 0;
viewer = new osgGA::SimpleViewer;
viewer->setSceneData(loadedModel.get());
viewer->setCameraManipulator(new osgGA::TrackballManipulator);
glutMainLoop();
return 0;

2
examples/osgGLUTsimple/GNUmakefile
View File

@ -4,7 +4,7 @@ include $(TOPDIR)/Make/makedefs
CXXFILES =\
osgGLUTsimple.cpp\
LIBS += -losgDB -losgUtil -losg $(GLUT_LIBS) $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
LIBS += -losgGA -losgDB -losgUtil -losg $(GLUT_LIBS) $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
INSTFILES = \
$(CXXFILES)\

45
examples/osgGLUTsimple/osgGLUTsimple.cpp
View File

@ -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;