tutorial 2

- (void)drawCube;
{
    glLoadIdentity();
    glTranslatef(0.0f,0.0f,-6.0f);
    glRotatef(cube_rotation,0.0f,0.2f,0.0f);
    cube_rotation = cube_rotation+0.15;
    glBegin(drawing_type);
	glColor3f(0.0f,1.0f,0.0f);				// Set The Color To Green
	glVertex3f( 1.0f, 1.0f,-1.0f);			// Top Right Of The Quad (Top)
	glVertex3f(-1.0f, 1.0f,-1.0f);			// Top Left Of The Quad (Top)
	glVertex3f(-1.0f, 1.0f, 1.0f);			// Bottom Left Of The Quad (Top)
	glVertex3f( 1.0f, 1.0f, 1.0f);			// Bottom Right Of The Quad (Top)
    glEnd();
    glBegin(drawing_type);
	glColor3f(1.0f,0.5f,0.0f);				// Set The Color To Orange
	glVertex3f( 1.0f,-1.0f, 1.0f);			// Top Right Of The Quad (Bottom)
	glVertex3f(-1.0f,-1.0f, 1.0f);			// Top Left Of The Quad (Bottom)
	glVertex3f(-1.0f,-1.0f,-1.0f);			// Bottom Left Of The Quad (Bottom)
	glVertex3f( 1.0f,-1.0f,-1.0f);			// Bottom Right Of The Quad (Bottom)
    glEnd();
    glBegin(drawing_type);
	glColor3f(1.0f,0.0f,0.0f);				// Set The Color To Red
	glVertex3f( 1.0f, 1.0f, 1.0f);			// Top Right Of The Quad (Front)
	glVertex3f(-1.0f, 1.0f, 1.0f);			// Top Left Of The Quad (Front)
	glVertex3f(-1.0f,-1.0f, 1.0f);			// Bottom Left Of The Quad (Front)
	glVertex3f( 1.0f,-1.0f, 1.0f);			// Bottom Right Of The Quad (Front)
    glEnd();
    glBegin(drawing_type);
	glColor3f(1.0f,1.0f,0.0f);				// Set The Color To Yellow
	glVertex3f( 1.0f,-1.0f,-1.0f);			// Bottom Left Of The Quad (Back)
	glVertex3f(-1.0f,-1.0f,-1.0f);			// Bottom Right Of The Quad (Back)
	glVertex3f(-1.0f, 1.0f,-1.0f);			// Top Right Of The Quad (Back)
	glVertex3f( 1.0f, 1.0f,-1.0f);			// Top Left Of The Quad (Back)
    glEnd();
    glBegin(drawing_type);
	glColor3f(0.0f,0.0f,1.0f);				// Set The Color To Blue
	glVertex3f(-1.0f, 1.0f, 1.0f);			// Top Right Of The Quad (Left)
	glVertex3f(-1.0f, 1.0f,-1.0f);			// Top Left Of The Quad (Left)
	glVertex3f(-1.0f,-1.0f,-1.0f);			// Bottom Left Of The Quad (Left)
	glVertex3f(-1.0f,-1.0f, 1.0f);			// Bottom Right Of The Quad (Left)
    glEnd();
    glBegin(drawing_type);
	glColor3f(1.0f,0.0f,1.0f);				// Set The Color To Violet
	glVertex3f( 1.0f, 1.0f,-1.0f);			// Top Right Of The Quad (Right)
	glVertex3f( 1.0f, 1.0f, 1.0f);			// Top Left Of The Quad (Right)
	glVertex3f( 1.0f,-1.0f, 1.0f);			// Bottom Left Of The Quad (Right)
	glVertex3f( 1.0f,-1.0f,-1.0f);			// Bottom Right Of The Quad (Right)
    glEnd();
}