NopSCADlib/vitamins/tubing.scad

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//
// NopSCADlib Copyright Chris Palmer 2018
// nop.head@gmail.com
// hydraraptor.blogspot.com
//
// This file is part of NopSCADlib.
//
// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
// GNU General Public License as published by the Free Software Foundation, either version 3 of
// the License, or (at your option) any later version.
//
// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with NopSCADlib.
// If not, see <https://www.gnu.org/licenses/>.
//
//
//! Tubing and sleeving. The internal diameter can be forced to stretch it over something.
//
include <../utils/core/core.scad>
include <../utils/tube.scad>
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function tubing_material(type) = type[1]; //! Material description
function tubing_od(type) = type[2]; //! Outside diameter
function tubing_id(type) = type[3]; //! Inside diameter
function tubing_colour(type) = type[4]; //! Colour
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function tubing_or(type) = tubing_od(type) / 2; //! Outside radius
module tubing(type, length = 15, forced_id = 0, center = true) { //! Draw specified tubing with optional forced internal diameter
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original_od = tubing_od(type);
original_id = tubing_id(type);
id = forced_id ? forced_id : original_id;
od = original_od + id - original_id;
if(tubing_material(type) == "Heatshrink sleeving")
vitamin(str("tubing(", type[0], arg(length, 15), "): ", tubing_material(type), " ID ", original_id, "mm x ",length, "mm"));
else
vitamin(str("tubing(", type[0], arg(length, 15), "): ", tubing_material(type), " OD ", original_od, "mm ID ", original_id,"mm x ",length, "mm"));
if(tubing_material(type) == "Carbon fiber")
woven_tube(od / 2, id /2, center = center, length, colour = tubing_colour(type));
else
color(tubing_colour(type))
linear_extrude(length, center = center, convexity = 4)
difference() {
circle(d = od);
circle(d = id);
}
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}