采用集成计算方法计算三次样条插值，简单快捷-Integrated calculation method cubic spline interpolation, simple and quick

Amplitude Thresholding compression method used here in for ECG signal compression as presented on paper entitled as ECG signal compression with reconstruction via cubic spline approximation by Olga Malgina, Jana Milenkovi, Emil Plesnik, Matej Zajc, A

双三次B样条曲面案例的OpenGL编程，可绘制出曲面以及多边形-Bi-cubic B-spline surface case OpenGL programming, surfaces and polygons can be drawn out