59 lines
1.6 KiB
OpenSCAD
59 lines
1.6 KiB
OpenSCAD
/*
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* Utility functions.
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*
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* Originally by Hans Häggström, 2010.
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* Dual licenced under Creative Commons Attribution-Share Alike 3.0 and LGPL2 or later
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*/
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<units.scad>
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function distance(a, b) = sqrt( (a[0] - b[0])*(a[0] - b[0]) +
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(a[1] - b[1])*(a[1] - b[1]) +
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(a[2] - b[2])*(a[2] - b[2]) );
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function length2(a) = sqrt( a[0]*a[0] + a[1]*a[1] );
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function normalized(a) = a / (max(distance([0,0,0], a), 0.00001));
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function angleOfNormalizedVector(n) = [0, -atan2(n[2], length2([n[0], n[1]])), atan2(n[1], n[0]) ];
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function angle(v) = angleOfNormalizedVector(normalized(v));
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function angleBetweenTwoPoints(a, b) = angle(normalized(b-a));
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CENTER = 0;
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LEFT = -0.5;
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RIGHT = 0.5;
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TOP = 0.5;
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BOTTOM = -0.5;
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FlatCap =0;
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ExtendedCap =0.5;
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CutCap =-0.5;
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module fromTo(from=[0,0,0], to=[1*m,0,0], size=[1*cm, 1*cm], align=[CENTER, CENTER], material=[0.5, 0.5, 0.5], name="", endExtras=[0,0], endCaps=[FlatCap, FlatCap], rotation=[0,0,0], printString=true) {
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angle = angleBetweenTwoPoints(from, to);
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length = distance(from, to) + endCaps[0]*size[0] + endCaps[1]*size[0] + endExtras[0] + endExtras[1];
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if (length > 0) {
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if (printString) echo(str(" " ,name, " ", size[0], "mm x ", size[1], "mm, length ",length,"mm"));
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color(material)
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translate(from)
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rotate(angle)
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translate( [ -endCaps[0]*size[0] - endExtras[0], size[0]*(-0.5-align[0]), size[1]*(-0.5+align[1]) ] )
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rotate(rotation)
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scale([length, size[0], size[1]]) child();
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}
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}
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module part(name) {
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echo("");
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echo(str(name, ":"));
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}
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