diffusing surface การใช้

Although previous workers had pronounced photometric laws 1 and 3, Lambert established the second and added the concept of perfectly diffuse surfaces.
From that surface the algorithm recursively generates a reflection ray, which is traced through the scene, where it hits another diffuse surface.
First, a ray is created at an eyepoint and traced through a pixel and into the scene, where it hits a diffuse surface.
Based on the three laws of photometry and the supposition of perfectly diffuse surfaces, " Photometria " developed and demonstrated the following:
Caustics are bright patterns caused by the focusing of light off a wide reflective region onto a narrow area of ( near-) diffuse surface.