前面讲了谢尔宾斯基三角形,这一节的将对二维三角形扩展到三维,变成四面体.即将一个正四面体不停地拆分,每个正四面体可以拆分成四个小号的正四面体.由二维转变到三维实现起来麻烦了许多。三维的谢尔宾斯基四面体看上去比谢尔宾斯基三角形更像坟冢。
核心代码:
static void SierpinskiTetrahedron(const Vector3* pSrc, Vector3* pDest) {Vector3 v01 = (pSrc[0] + pSrc[1])*0.5f;Vector3 v02 = (pSrc[0] + pSrc[2])*0.5f;Vector3 v03 = (pSrc[0] + pSrc[3])*0.5f;Vector3 v12 = (pSrc[1] + pSrc[2])*0.5f;Vector3 v13 = (pSrc[1] + pSrc[3])*0.5f;Vector3 v23 = (pSrc[2] + pSrc[3])*0.5f;pDest[0] = pSrc[0];pDest[1] = v01;pDest[2] = v02;pDest[3] = v03;pDest[4] = pSrc[1];pDest[5] = v01;pDest[6] = v12;pDest[7] = v13;pDest[8] = pSrc[2];pDest[9] = v02;pDest[10] = v12;pDest[11] = v23;pDest[12] = pSrc[3];pDest[13] = v03;pDest[14] = v13;pDest[15] = v23; }
软件下载地址:http://files.cnblogs.com/WhyEngine/Fractal.7z