//
// Draw Hud
//
void DrawHUD(void)
{
glLoadIdentity();
// change the matrix
glMatrixMode(GL_PROJECTION);
// current view
glPushMatrix();
// Begin normal code
// reset the matrix
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0f, (GLfloat)SCREEN_WIDTH /
(GLfloat)SCREEN_HEIGHT, 0.1f, PERSPECTIVE_Z);
glMatrixMode(GL_MODELVIEW);
GetFramesPerSecond(); // get frames
} // end of the function
std::string MainLoopTimer::GetFPS ()
{
std::ostringstream stream;
stream.setf(std::ios::fixed | std::ios::showpoint);
stream.precision(1);
stream << "fps: " << GetFramesPerSecond();
return stream.str();
}
//
// Draw Hud
//
void DrawHUD(void)
{
glLoadIdentity();
// change the matrix
glMatrixMode(GL_PROJECTION);
// current view
glPushMatrix();
#if ENABLE_HUD
glDisable(GL_LIGHTING);
// setup projectino for text
glLoadIdentity();
glOrtho(0, SCREEN_WIDTH, 0, SCREEN_HEIGHT, -1.0, 1.0);
// get rid of textured text
glDisable(GL_TEXTURE_2D);
// dont need depth test
glDisable(GL_DEPTH_TEST);
// draw variables
glColor3f(1.0, 1.0, 0.0);
glRasterPos2i(10, 48);
PrintText("FPS: %0.2f", framerate);
PrintGlobals();
glPopMatrix(); // end
// reset the textures
glEnable(GL_TEXTURE_2D);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
#endif
// Begin normal code
// reset the matrix
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0f, (GLfloat)SCREEN_WIDTH /
(GLfloat)SCREEN_HEIGHT, 0.1f, PERSPECTIVE_Z);
glMatrixMode(GL_MODELVIEW);
GetFramesPerSecond(); // get frames
} // end of the function
double MarkersMotion::GetTimeStep()
{
// By inverting our frames per second, we obtain the time interval between
// frames (in fractions of a second)
return 1.0f/GetFramesPerSecond();
}