Ray casting

In computer graphics, Ray-casting is a pseudo-3D rendering technique, a special case of ray tracing.

The technique consists of sending out one ray for each column of pixels, checking if it intersects a wall, and drawing textures on the screen accordingly, creating a depth buffer against which to clip the scaled sprites that represent enemies, powerups, and props.

Common Tasks using Ray Casting are :

• Collision_detection
• rendering (computer graphics)

External link

• Ray-Casting Tutorial by F. Permadi