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模拟二维图形中的光照

连续改变光源方向.

    
Wolfram Language code: Animate[ReliefPlot[Table[Sin[i ^ 2 + j ^ 2], {i, -4, 4, .05}, {j, -4, 4, .05}], ColorFunction -> None, MaxPlotPoints -> Infinity, LightingAngle -> θ, BoxRatios -> {1, 1, .2}, ImageSize -> 150], {θ, 0, 2Pi}, AnimationRunning -> False]