【摘要】 位图文件格式决定了位图只能存储矩形区域的像素信息,而在实际应用中存在着大量的非矩形区域的纹理映射问题。不同于通常的蒙板贴图,本文讨论了一种基于OpenGL的非矩形纹理映射算法,及其相应的原始矩形图像的前处理方法。通过实验对比,该算法能达到与蒙板贴图同样的效果,但操作更为简便,并用该方法实现了自行开发的工业设计软件系统中的非矩形纹理映射功能。更多还原

【Abstract】 The file format of Bitmap is rectangular,while there are lots of applications of non-rectangle texture mapping. Different from the usual mak map,an algorithm for the non-rectangle texture mapping is studied; and the predisposal of the original rectangle bitmap is discussed. Through experimentation and compare,it was proved this algorithm attained the same effect as mask map,while it is more convenient. And the function of the CAID system developed by ourselves is realized with this algorithm.更多还原