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54 lines
1.9 KiB
OpenSCAD
54 lines
1.9 KiB
OpenSCAD
//
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// NopSCADlib Copyright Chris Palmer 2018
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// nop.head@gmail.com
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// hydraraptor.blogspot.com
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//
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// This file is part of NopSCADlib.
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//
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// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
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// GNU General Public License as published by the Free Software Foundation, either version 3 of
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// the License, or (at your option) any later version.
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//
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// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along with NopSCADlib.
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// If not, see <https://www.gnu.org/licenses/>.
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//
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//
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//! Cable zipties.
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//
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include <../core.scad>
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use <../utils/tube.scad>
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function ziptie_width(type) = type[1]; //! Width
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function ziptie_thickness(type) = type[2]; //! Thickness
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function ziptie_latch(type) = type[3]; //! Latch dimensions
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function ziptie_colour(type) = type[4]; //! Colour
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function ziptie_tail(type) = type[5]; //! The length without teeth
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module ziptie(type, r)
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{
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latch = ziptie_latch(type);
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length = ceil(2 * PI * r + ziptie_tail(type) + latch.z + 1);
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len = length <= 100 ? 100 : length;
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vitamin(str("ziptie(", type[0], ", ", r, "): Ziptie ", len, "mm min length"));
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angle = (r > latch.x / 2) ? asin((latch.x / 2) / r) - asin(ziptie_thickness(type) / latch.x) : 0;
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color(ziptie_colour(type)) union() {
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tube(ir = r, or = r + ziptie_thickness(type), h = ziptie_width(type));
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translate([0, -r, - latch.y / 2])
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rotate([90, 0, angle]) {
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union() {
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cube(latch);
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translate([latch.x / 2, latch.y / 2, (latch.z + 1) / 2])
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cube([ziptie_thickness(type), ziptie_width(type), latch.z + 1], center = true);
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}
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}
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}
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}
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