Game Development Reference
In-Depth Information
if( (patt_id=arLoadPatt(patt_name)) < 0 ) {
printf("pattern load error !!\n");
exit(0);
}
/* open the graphics window */
argInit( &cparam, 1.0, 0, 0, 0, 0 );
}
/* cleanup function called when program exits */
static void cleanup(void)
{
arVideoCapStop();
arVideoClose();
argCleanup();
}
static void draw( void )
{
double gl_para[16];
argDrawMode3D();
argDraw3dCamera( 0, 0 );
glClearDepth( 1.0 );
glClear(GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
/* load the camera transformation matrix */
argConvGlpara(patt_trans, gl_para);
glMatrixMode(GL_MODELVIEW);
glLoadMatrixd( gl_para );
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glMatrixMode(GL_MODELVIEW);
glTranslatef( 0.0, 0.0, 25.0 );
/* DRAW A SOLID CUBE */
glutSolidCube(50.0);
glDisable( GL_LIGHTING );
glDisable( GL_DEPTH_TEST );
}
The
main
function in Listing 9-1 is divided in three logical steps: initialization, video capture,
and main loop, as shown in this fragment:
init();
arVideoCapStart();
argMainLoop( NULL, keyEvent, mainLoop );
Let's look at these steps in more detail.
