well I am able to rotate my rectangle but I want to move it up or down after I rotate it and have it follow the nose of the rectangles. I want to move my rectangles like asteroids.
Code :
void draw_tank_one()
{
	glColor3f(1.0f, 0.0f, 0.0f);
 
	glRectf(220.0f+move, 15.0f+up, 250.0f+move, 5.0f+up); //draw top block
	glRectf(220.0f+move, -10.0f+up, 250.0f+move, -20.0f+up); //draw bottom block
	glRectf(225.0f+move, 5.0f+up, 240.0f+move, -10.0f+up); //draw center block
	glRectf(210.0f+move, 0.0f+up, 225.0f+move, -5.0f+up); //draw turret block
}
 
void draw_tank_two()
{
	glColor3f(0.0f, 1.0f, 0.0f);
 
	glRectf(-250.0f, 15.0f, -220.0f, 5.0f); //draw top block
	glRectf(-250.0f, -10.0f, -220.0f, -20.0f); //draw bottom block
	glRectf(-240.0f, 5.0f, -225.0f, -10.0f); //draw center block
	glRectf(-225.0f, 0.0f, -210.0f, -5.0f); //draw turret block
}
 
///////////////////////////////////////////////////////////
// Called to draw scene
void RenderScene(void)
{
	// Clear the window with current clearing color
	glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
 
	glPushMatrix();
	glTranslatef(232.5f, 0.0f, 0.0f);
	glRotatef(angle, 0.0f, 0.0f, 1.0f);
	glTranslatef(-232.5f, 0.0f, 0.0f);
	draw_tank_one();
	glPopMatrix();
 
	draw_tank_two();
 
	// Flush drawing commands
	glutSwapBuffers();
}