BYR Achieve · 镜像论坛

哪位大哥帮我一下，把这个伪代码改成能运行的代码，毕设急求

2010/6/20镜像同步3 回复

这个代码地来源在上传的文件里，伪代码如下： rgb lsou; // intensity of light source rgb back; // background intensity rgb ambi; // ambient light intensity Vector L // vector pointing to light source Vector N // surface normal Object objects [n] //list of n objects in scene float Ks [n] // specular reflectivity factor for each object float Kr [n] // refractivity index for each object float Kd [n] // diffuse reflectivity factor for each object Ray r; void raytrace() { for (each pixel P of projection viewport in raster order) { r = ray emanating from viewer through P int depth = 1; // depth of ray tree consisting of multiple paths the pixel color at P = intensity(r, depth) } } rgb intensity (Ray r, int depth) { Ray flec, frac; rgb spec, refr, dull, intensity; if (depth >= 5) intensity = back; else { find the closest intersection of r with all objects in scene if (no intersection) { intensity =back; } else { Take closest intersection which is object[j] compute normal N at the intersection point if (Ks[j] >0) { // non-zero specular reflectivity compute reflection ray flec; refl = Ks[j]*intensity(flec, depth+1); } else refl =0; if (Kr[j]>0) { // non-zero refractivity compute refraction ray frac; refr = Kr[j]*intensity(frac, depth+1); } else refr =0; check for shadow; if (shadow) direct = Kd[j]*ambi else direct = Phong illumination computation; intensity = direct + refl +refr; } } return intensity; } 附件(1.2MB) raytracing.ppt

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