Bézier curve生成三次贝塞尔曲线的源代码, 函数ComputeBezier将以控制点cp产生的曲线点填入Point2D结构的数组 调用者必须分配足够的空间以供输出结果——<sizeof(Point2D) numberOfPoints>-Bzier curve cubic Bezier curve generated source code, function ComputeBezier will control point cp curve points to fil