void ReshapeGL (int width, int height) // Reshape The Window When It's Moved Or Resized
{
glViewport (0, 0, (GLsizei)(width), (GLsizei)(height)); // Reset The Current Viewport
glMatrixMode (GL_PROJECTION); // Select The Projection Matrix
glLoadIdentity (); // Reset The Projection Matrix
gluPerspective (45.0f, (GLfloat)(width)/(GLfloat)(height), // Calculate The Aspect Ratio Of The Window
1.0f, 100.0f);
glMatrixMode (GL_MODELVIEW); // Select The Modelview Matrix
glLoadIdentity (); // Reset The Modelview Matrix
ArcBall.setBounds((GLfloat)width, (GLfloat)height); //*NEW* Update mouse bounds for arcball
}
GLvoid ReSizeGLScene(GLsizei width, GLsizei height) // Resize And Initialize The GL Window
{
double ymax, ymin, xmax, xmin = 0;
if (height==0) // Prevent A Divide By Zero By
{
height=1; // Making Height Equal One
}
glViewport(0,0,width,height); // Reset The Current Viewport
glMatrixMode(GL_PROJECTION); // Select The Projection Matrix
glLoadIdentity();
ymax = 0.1f * tan(45.0f * M_PI / 360.0);
ymin = -ymax;
xmin = ymin * (GLfloat)width/(GLfloat)height;
xmax = ymax * (GLfloat)width/(GLfloat)height;
glFrustum(xmin, xmax, ymin, ymax, 0.1f, 5000.0f);
//glFrontFace(GL_CW);
glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
glLoadIdentity(); // Reset The Modelview Matrix
ArcBall.setBounds(width, height);
}