Ray casting This version of ray tracing is often called ray casting:
{"Image DocumentName": "Ray casting This version of ray tracing is often called ray casting:", "Image ImageDescription": "loop y. loop x. shoot ray from eye point through pixel (x,y) into scene. intersect with all surfaces, find first one the ray hits. shade that point to compute pixel (x,y)\u2019s color. (perhaps simulating shadows) A ray is p+td: p is ray origin, d the direction. t=0 at origin of ray, t>0 in positive direction of ray. typically assume ||d||=1. p and d are typically computed in world space. This is easily generalized to give recursive ray tracing...", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}