31 lines
1.1 KiB
OpenSCAD
31 lines
1.1 KiB
OpenSCAD
/*
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* Multiplication along certain curves
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*
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* Copyright by Elmo Mäntynen, 2012.
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* Licenced under LGPL2 or later
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*/
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include <units.scad>
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use <utilities.scad>
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// Copy everything $no of times around an $axis, spread over $angle
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// If $strict==true or $angle==360, then spacing will leave an empty at $angle,
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// otherwise, $no will be distributed so first is at 0deg, last copy at $angle degrees
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// NOTE: $axis works (rotates around that axis), but pass parameter as lower case string
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// eg: "x", "y", or "z". Alternatively, use units.scad vector definitions: X, Y, Z
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module spin(no, angle=360, axis=Z, strict=false){
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divisor = (strict || angle==360) ? no : no-1;
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for (i = [0:no-1])
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rotate(normalized_axis(axis)*angle*i/divisor)
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children();
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}
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// Make a copy of children by rotating around $axis by 180 degrees
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module duplicate(axis=Z) spin(no=2, axis=axis) children();
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// Make $no copies along the $axis, separated by $separation
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module linear_multiply(no, separation, axis=Z)
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for (i = [0:no-1])
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translate(i*separation*normalized_axis(axis)) children();
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