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 — design_guide_linear_extrude [2018/03/08 13:16] (current)z3dev created 2018/03/08 13:16 z3dev created 2018/03/08 13:16 z3dev created Line 1: Line 1: + ==== Linear Extrude ==== + Extruding 2D shapes into 3D, given height, twist (degrees), and slices (if twist is made): + + ​ + linear_extrude({ height: 10 }, square()); + linear_extrude({ height: 10, twist: 90 }, square([1,​2]));​ + linear_extrude({ height: 10, twist: 360, slices: 50}, circle().translate([1,​0,​0]) ); + + linear_extrude({ height: 10, center: true, twist: 360, slices: 50}, translate([2,​0,​0],​ square([1,​2])) ); + linear_extrude({ height: 10, center: true, twist: 360, slices: 50}, square([1,​2]).translate([2,​0,​0]) ); + ​ + + Linear extrusion of 2D shape, with optional twist. The 2d shape is placed in in z=0 plane and extruded into direction offset (a CSG.Vector3D). The final face is rotated twistangle degrees. Rotation is done around the origin of the 2D shape (i.e. x=0, y=0) twiststeps determines the resolution of the twist (should be >= 1), returns a CSG object: + + ​ + // CAG built in method + var c = CAG.circle({radius:​ 3}); + extruded = c.extrude({offset:​ [0,0,10], twistangle: 360, twiststeps: 100}); +

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