OpenSceneGraph/examples/osgsimpleviewerGLUT/osgsimpleviewerGLUT.cpp
2006-10-01 16:14:16 +00:00

101 lines
2.5 KiB
C++

// C++ source file - (C) 2003 Robert Osfield, released under the OSGPL.
// (C) 2005 Mike Weiblen http://mew.cx/ released under the OSGPL.
// Simple example using GLUT to create an OpenGL window and OSG for rendering.
// Derived from osgGLUTsimple.cpp and osgkeyboardmouse.cpp
#include <iostream>
#ifdef WIN32
#include <windows.h>
#endif
#ifdef __APPLE__
# include <GLUT/glut.h>
#else
# include <GL/glut.h>
#endif
#include <osgGA/SimpleViewer>
#include <osgGA/TrackballManipulator>
#include <osgDB/ReadFile>
osg::ref_ptr<osgGA::SimpleViewer> viewer;
void display(void)
{
// update and render the scene graph
viewer->frame();
// Swap Buffers
glutSwapBuffers();
glutPostRedisplay();
}
void reshape( int w, int h )
{
// update the window dimensions, in case the window has been resized.
viewer->getEventQueue()->windowResize(0, 0, w, h );
}
void mousebutton( int button, int state, int x, int 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 )
{
viewer->getEventQueue()->mouseMotion( x, y );
}
void keyboard( unsigned char key, int /*x*/, int /*y*/ )
{
switch( key )
{
case 27:
glutDestroyWindow(glutGetWindow());
break;
default:
viewer->getEventQueue()->keyPress( (osgGA::GUIEventAdapter::KeySymbol) key );
viewer->getEventQueue()->keyRelease( (osgGA::GUIEventAdapter::KeySymbol) key );
break;
}
}
int main( int argc, char **argv )
{
glutInit(&argc, argv);
if (argc<2)
{
std::cout << argv[0] <<": requires filename argument." << std::endl;
return 1;
}
// load the scene.
osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFile(argv[1]);
if (!loadedModel)
{
std::cout << argv[0] <<": No data loaded." << std::endl;
return 1;
}
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGBA | GLUT_DEPTH | GLUT_ALPHA );
glutInitWindowPosition( 100, 100 );
glutInitWindowSize( 800, 600 );
glutCreateWindow( argv[0] );
glutDisplayFunc( display );
glutReshapeFunc( reshape );
glutMouseFunc( mousebutton );
glutMotionFunc( mousemove );
glutKeyboardFunc( keyboard );
// create the view of the scene.
viewer = new osgGA::SimpleViewer;
viewer->setSceneData(loadedModel.get());
viewer->setCameraManipulator(new osgGA::TrackballManipulator);
glutMainLoop();
return 0;
}
/*EOF*/