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8 年
光线投射 ,光线追踪与路径追踪的区别
光线投射(Ray Casting),作为光线追踪算法中的第一步,其理念起源于1968年,由Arthur Appel在一篇名为《 Some techniques for shading machine rendering of solids》的文章中提出。其具体思路是从每一个像素射出一条射线,然后找到最接近的物体挡住射线的路径,而视平面上 ...
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