VTK的sliderWidget功能测试，实现手动调整DIFFUSE VALUE-VTK' s sliderWidget functional testing, achieving manually adjust DIFFUSE VALUE

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.

首先定义一个3维心形图案，然后设置放映功能和放映次数，达到跳动功能效果-First define a three-dimensional heart-shaped pattern, and then set the slide show and show the number of times to beating functional effects