31 lines
813 B
OpenSCAD
31 lines
813 B
OpenSCAD
// TODO remove/rename this file
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/* Example usage:
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for (i=mirror4XY(midpoint=[0,0,0], offsetX=90, offsetY=90)) {
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translate(v=i)
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something();
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}
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*/
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function mirror4XY(midpoint, offsetX, offsetY) =
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[[midpoint[0]+offsetX, midpoint[1]+offsetY, midpoint[2]],
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[midpoint[0]-offsetX, midpoint[1]+offsetY, midpoint[2]],
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[midpoint[0]-offsetX, midpoint[1]-offsetY, midpoint[2]],
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[midpoint[0]+offsetX, midpoint[1]-offsetY, midpoint[2]]];
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module align(a,b) {
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//echo("a", a);
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//echo("b", b);
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rot_axis = cross(a,b);
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if (rot_axis == [0,0,0]) {
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error("Can't align - provided vectors are parallel");
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}
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//echo("rot_axis", rot_axis);
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angle = acos(a*b/(norm(a)*norm(b)));
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//echo("angle", angle)
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rotate(v=rot_axis, a=angle)
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children(0);
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} |