HalftoneShading

HalftoneShading[] is a three-dimensional graphics directive specifying that surfaces that follow are to be drawn with a base pattern of dots.

HalftoneShading[d] uses the density d of shading.

HalftoneShading[col] uses dots with the specified color col.

HalftoneShading["shape"] uses the specified "shape" as base pattern. 

HalftoneShading[d,col,"shape"] uses a fixed pattern of "shape" with the specified color col and density d.

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