87 lines
3.6 KiB
OpenSCAD
87 lines
3.6 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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// This file included directly or indirectly in every scad file.
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//
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// This scheme allows the following:
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// bom defaults to 0
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// Setting $bom on the command line or in the main file before including lib.scad overrides it everywhere.
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// Setting $bom after including lib overrides bom in the libs but not in the local file.
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// Setting $_bom in the local file overrides it in the local file but not in the libs.
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//
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//function is_undef(x) = x == undef;
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$_bom = is_undef($bom) ? 0 : $bom; // 0 no bom, 1 assemblies and stls, 2 vitamins as well
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$exploded = is_undef($explode) ? 0 : $explode; // 1 for exploded view
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layer_height = is_undef($layer_height) ? 0.25 : $layer_height; // layer heigth when printing
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extrusion_width = is_undef($extrusion_width) ? 0.5 : $extrusion_width; // filament width when printing
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nozzle = is_undef($nozzle) ? 0.45 : $nozzle; // 3D printer nozzle
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cnc_bit_r = is_undef($cnc_bit_r) ? 1.2 : $cnc_bit_r; // minimum tool radius when milling 2D objects
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pp1_colour = is_undef($pp1_colour) ? [0, 146/255, 0] : $pp1_colour; // printed part colour 1, RepRap logo colour
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pp2_colour = is_undef($pp2_colour) ? "red" : $pp2_colour; // printed part colour 2
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pp3_colour = is_undef($pp3_colour) ? "blue" : $pp3_colour; // printed part colour 3
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pp4_colour = is_undef($pp4_colour) ? "darkorange" : $pp4_colour;// printed part colour 4
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show_rays = is_undef($show_rays) ? false : $show_rays; // show camera sight lines and light direction
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show_threads = is_undef($show_threads) ? false : $show_threads; // show screw threads
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// Minimum wall is about two filaments wide but we extrude it closer to get better bonding
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squeezed_wall = $preview ? 2 * extrusion_width - layer_height * (1 - PI / 4)
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: extrusion_width - layer_height / 2 + nozzle / 2 + extrusion_width / 2;
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inf = 1e10; // very big
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eps = 1/128; // small fudge factor to stop CSG barfing on coincident faces.
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$fa = 6;
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$fs = extrusion_width / 2;
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function round_to_layer(z) = ceil(z / layer_height) * layer_height;
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// Some additional named colours
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function grey(n) = [0.01, 0.01, 0.01] * n; //! Generate a shade of grey to pass to color().
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gold = [255/255, 215/255, 0/255];
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brass = [255/255, 220/255, 100/255];
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silver = [0.75, 0.75, 0.75];
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/*
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* Enums
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*/
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//
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// Screws
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//
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hs_cap = 0;
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hs_pan = 1;
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hs_cs = 2; // counter sunk
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hs_hex = 3;
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hs_grub = 4; // pulley set screw
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hs_cs_cap = 5;
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hs_dome = 6;
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//
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// Hot end descriptions
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//
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jhead = 1;
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e3d = 2;
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//
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// Face enumeration
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//
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f_bottom = 0;
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f_top = 1;
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f_left = 2;
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f_right = 3;
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f_front = 4;
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f_back = 5;
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