IX. 3 Although fractal images are typically created with a two-dimensional view, it is possible to create an image with a three-dimensional appearance through programming effects. Essentially, several points very close together (closer than one screen pixel) are iterated in parallel; once iteration is completed, a "height" value for each point is computed, a plane passed through the three points (now oriented in 3 If the light vector Any of the distance estimator functions provides an excellent height value to use, but the technique works fairly well with almost any function. Interesting "embossing" effects can be achieved by using a discrete value for height; this produces a terraced appearance. Fig 7. The Mandelbrot set surface with a three-dimensional terraced appearance.
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