| 摘要 |
A ray tracing method including the steps of: emitting a ray from a viewpoint, which is set at a predetermined position, toward a lamp; ray tracing a ray which has been stochastically selected as a ray which reaches a light source of the lamp; and analyzing at least one of illuminance at a predetermined position on a surface illuminated by the lamp, luminance at a predetermined position on a surface of the lamp, and a color state of the lamp.
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