CAD软件开发：按A键，曲轴逆时针旋转，带动摇杆和滑块运动；按D键，曲轴顺时针旋转，带动摇杆和滑块运动。-CAD Software Development: Press A button, crankshaft counter-clockwise rotation, driven rocker and the slide movement press D key, crank clockwise rotation, driven rocker and the slide movement.

三维物体图形绘制演示程序+源代码，旋转角和倾斜角都可以适合改变，而且还是滑块形式的。源码参考性高，希望大家喜欢。-Three-dimensional object drawing demo program+ source code, and the rotation angle and tilt angle can be fit to change forms, but also a slider. Source reference, hope you like.