自定义函数 根据两个控制点以及对应斜率 画出Hermite曲线 并由方向键控制形状大小-Hermite curve by the arrow keys to control the shape and size of a custom function to draw the two control points and the corresponding slope

自定义三维点，利用OSG自带函数进行delauny三件剖分，得到三角网格-Custom 3D points, OSG comes the function for three split delauny, get the triangular mesh