35 lines
No EOL
1.4 KiB
OpenSCAD
35 lines
No EOL
1.4 KiB
OpenSCAD
use <bezierExtrusion.scad>;
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module headband(thickness, height){
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rake_length = 2.5;
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shape_band = [[thickness/2,height/2-0.5],
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[thickness/2,-height/2+0.5],
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[thickness/2-0.5,-height/2],
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[-thickness/2+0.5,-height/2],
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[-thickness/2,-height/2+0.5],
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[-thickness/2,height/2-0.5],
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[-thickness/2+0.5,height/2],
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[thickness/2-0.5,height/2]];
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shape_rake = [[0,-height/2],
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[0,height/2],
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[rake_length,height/2-2],
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[rake_length,-height/2+2]];
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ctrl_band = [[21,0],[77,56],[56,126],[0,126]];
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ctrl_end = [[21,0],[20,-1],[18,-4],[17,-10]];
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ctrl_rake = [[-52,86],[-40,139.5],[40,139.5],[52,86]];
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fillet = function (t) (t < 0.75) ? 1 : sqrt(1-((4*t)-3)^2)/1.5 + 0.33;
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rake = function (t) (-cos(64 * 360 * t) > 0.33) ? 1 : 0.1;
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union(){
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bezier_extrude(ctrl = ctrl_band, shape = shape_band, sections = 128);
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mirror([1,0,0]) bezier_extrude(ctrl = ctrl_band, shape = shape_band, sections = 128);
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bezier_extrude(ctrl = ctrl_end, shape = shape_band, mod_x = fillet, sections = 16);
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mirror([1,0,0]) bezier_extrude(ctrl = ctrl_end, shape = shape_band, mod_x = fillet, sections = 16);
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bezier_extrude(ctrl = ctrl_rake, shape = shape_rake, mod_x = rake, sections = 512);
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}
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}
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headband(thickness = 2.5, height = 5.5); |