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  • $\begingroup$ Related: How to extrude a 3D image from a binary 2D image. $\endgroup$ Commented Jul 21, 2014 at 12:53
  • $\begingroup$ @Mr.Wizard,I think it isn't duplicte,because (6206) is just a image,not a geomatry that can rotate. $\endgroup$ Commented Jul 21, 2014 at 12:58
  • $\begingroup$ @Mr.Wizard,I would like to use a geomatry that can rotate freely to construct a robot model,Can you help me? $\endgroup$ Commented Jul 21, 2014 at 13:03
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    $\begingroup$ @Mr.Wizard,In Jens's method,ColorReplace and Raster3D is not in V8,in addition,halirutan's solution takes many time to calculate and it is hard to rotate. $\endgroup$ Commented Jul 21, 2014 at 14:39
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    $\begingroup$ Does this do the sort of thing you are looking for? - extrude = {0, 0, 1}; rule2Dto3D = {x_?AtomQ, y_?AtomQ} :> {x, y, 0}; ruleLine2Polygon = Line[{p_?VectorQ, q_?VectorQ}] :> Polygon[{p, q, q + extrude, p + extrude}]; ruleCircle2Cylinder = Circle[p_?VectorQ, r_?AtomQ] :> Cylinder[{p, p + extrude}, r]; object2D = {Line[{{0, 0}, {8, 0}}], Circle[{0, 0}, 2], Circle[{8, 0}, 1]}; object3D = object2D /. rule2Dto3D /. {ruleLine2Polygon, ruleCircle2Cylinder}; {Graphics@object2D, Graphics3D@object3D}. It is limited to extruding line segments and circles, but extra 2D to 3D rules could be added. $\endgroup$ Commented Jul 21, 2014 at 14:53