Introduction - If you have any usage issues, please Google them yourself
opengl rendering of 3D windmills. (1) there are three windmills are available (2) windmill blades can be set in four colors (3) to control the windmill' s turning and stopping, you can set rotation speed (four) color windmill with the process in turning speed changes (5) can be set rotating speed, the windmill has to stop and start acceleration, gradual acceleration and gradual deceleration simulated the effect of static can set acceleration