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.

计算机图形学中的三维图形的组合变换，空间中一点p绕空间中任一轴AB逆时针旋转r角，求旋转矩阵RAB -In computer graphics, the combination of 3 d graphics transformation, the space in a point p in the space around any axis AB counter-clockwise r Angle, o RAB rotation matrix