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by deadsy
2102 days ago
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SDF = signed distance function. A function mapping a 2d/3d coordinate onto a scalar. The scalar is the shortest distance from that point to the surface of the object. (+ve outside, -ve inside) CSG = constructive solid geometry: Take primitive 3d shapes and do unions, differences, intersections on them to build more complex shapes. Fairly obviously the union of 2 sdf functions is going to be the minimum of those values. That pretty simple. Intersections and differences are not much more complex.... See: https://iquilezles.org/www/articles/distfunctions/distfuncti... for some quick examples. |
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