What is Ray Tracing?
| Ray Tracing |
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A method based on following one-dimensional rays, where each ray is defined by an origin point and a vector direction. In a rendering algorithm, each ray is followed until it intersects a visible surface, where new rays may be spawned in a recursive process. In light-forwards ray tracing, light is followed from the light sources to the final measurement areas. In light-backwards ray tracing (as in Radiance), each view ray is traced from the point of measurement to the contributing lighting sources. In bidirectional ray trace, lighting is traced both from the measurement points and from the light sources, meeting somewhere in between. |
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