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Line 7: === Point === Point sources emit light from a single point in all directions, with the intensity of the light decreasing with distance.<ref name=":773"/><ref>{{Cite web\|url=https://www.cs.uic.edu/~jbell/CourseNotes/ComputerGraphics/LightingAndShading.html\|title=Intro to Computer Graphics: Lighting and Shading\|website=www.cs.uic.edu\|access-date=2019-11-05}}</ref> An example of a point source is a standalone light bulb.<ref name=":8">{{Cite web\|url=http://www.bcchang.com/immersive/ygbasics/lighting.html\|title=Lighting in 3D Graphics\|website=www.bcchang.com\|access-date=2019-11-05}}</ref> [[File:Real-time Raymarched Terrain.png\|thumb\|309x309px\|A directional light source illuminating a terrain.]]

Computer graphics lighting: Difference between revisions