基于立体投影算法的局部球面纹理映射技术

计算机真实感图形技术中,经常使用二次曲面作为中介曲面进行纹理映射,从而将纹理空间到三维景物空间的纹理映射分为两步,习惯称为两步法纹理映射技术。实际情况下,很多物体需要进行纹理映射的并不是其整体,而仅是其中的一部分。因此,该文将以球面为例探讨如何运用立体投影算法实现中介曲面上任意方位的局部纹理映射,达到了较好的贴图效果。

Local Sphere Texture Mapping Technique Based On Stereoscopic Projection Algorithm

In computer graphics technique with illusion of reality,quadrics surfaces are frequently employed as intermediary surfaces in the texture mapping technique.It partitions the mapping from texture space to 3-D object space into two parts,customarily called Two-part Texture Mapping algorithm.In fact,it needs local mapping rather than the whole in many situations.In this paper,we take sphere for instance,researching on how to realize local texture mapping at arbitrary location by applying stereoscopic projectio...