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jscad.js
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jscad.js
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"use strict"; // avoid module leak
var exports = {};
var scad = exports;
if (true) {
var fs = require("fs");
var writer;
var eps = 1e-5;
exports.rad2deg = function (r) {
return r / Math.PI * 180;
}
exports.srad2deg = function (p) {
return [exports.rad2deg(p[0]), exports.rad2deg(p[1])];
}
function out(x) {
return (typeof(x) === 'object') ? JSON.stringify(x) : x;
}
exports.wlog_ = function (...s) {
writer.write(out(s[0]));
for(var i=1; i<s.length; ++i) {
writer.write(" " + out(s[i]));
}
}
var wlog_ = exports.wlog_;
exports.wlog = function (...s) {
writer.write(out(s[0]));
for(var i=1; i<s.length; ++i) {
writer.write(" " + out(s[i]));
}
writer.write("\n");
}
var wlog = exports.wlog;
exports.open = function (name = 'x.jscad') {
writer = fs.createWriteStream(name);
};
exports.close = function () {
writer.close();
};
exports.header = function (coords, sc) {
wlog("const jscad = require('@jscad/modeling')");
wlog("const { colorize } = jscad.colors");
wlog("const { cuboid, cube, sphere, cylinder, circle, polygon } = jscad.primitives");
wlog("const { rotate, translate } = jscad.transforms");
wlog("const { degToRad } = jscad.utils");
wlog("const { add, normalize, length, scale, dot } = jscad.maths.vec3");
wlog("const { extrudeRotate, extrudeLinear } = require('@jscad/modeling').extrusions");
wlog("const { intersect, subtract, union } = require('@jscad/modeling').booleans");
wlog("const { hull, hullChain } = require('@jscad/modeling').hulls");
wlog("const { vectorText } = require('@jscad/modeling').text");
wlog("function getParameterDefinitions() {");
wlog(" return [");
wlog(" { name: 'faces', type: 'choice', values: ['Pentagons', '6coloring', 'None'], initial: 'Pentagons', caption: 'face coloring:' },");
wlog(" ,{ name: 'white', type: 'checkbox', checked: true, initial: '20', caption: 'surface of sphere:' },");
wlog(" ,{ name: 'half', type: 'checkbox', checked: true, initial: '20', caption: 'half vertex:' },");
wlog(" ,{ name: 'vtxt', type: 'choice', values: ['Id', 'Type', 'theta', 'phi', 'None'], initial: 'Type', caption: 'vtxt:' },");
wlog(" ,{ name: 'look_inside', type: 'choice', values: ['no', 'yes'], initial: 'no', caption: 'look_inside:' }");
wlog(" ];");
wlog("}");
wlog("function map_3D(c, sc) {");
wlog(" return [Math.cos(degToRad(c[0]))*Math.sin(degToRad(c[1]))*sc, Math.sin(degToRad(c[0]))*Math.sin(degToRad(c[1]))*sc, Math.cos(degToRad(c[1]))*sc]");
wlog("}");
wlog("eps =", eps);
wlog("sc =", sc);
wlog("coords =[");
coords.forEach(function (p, i) {
if (i > 0) {
wlog(",", exports.srad2deg(p));
} else {
wlog(exports.srad2deg(p));
}
});
wlog("]");
wlog("function vertex(_v, half=false) {");
wlog(" p = coords[_v] ");
wlog(" v = map_3D(p,sc)");
wlog(" s = sphere({radius: 0.5, center: v})");
wlog(" if (half) {");
wlog(" la1 = degToRad(p[0])");
wlog(" ph1 = degToRad(90 - p[1])");
wlog(" return colorize([0, 0.7, 0],");
wlog(" subtract(s,");
wlog(" translate([0, 0, 0],");
wlog(" rotate([0, 0, la1],");
wlog(" rotate([0, -ph1, 0],");
wlog(" translate([sc+0.5, 0],");
wlog(" rotate([degToRad(90), 0, degToRad(90)],");
wlog(" translate([-0, -0, -1],");
wlog(" cuboid({size: [1, 1, 0.8]})");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" } else {");
wlog(" return colorize([0, 0.7, 0], s)");
wlog(" }");
wlog("}");
wlog("function txt(mesg, w) {");
wlog(" const lineRadius = w / 2");
wlog(" const lineCorner = circle({ radius: lineRadius })");
wlog("");
wlog(" const lineSegmentPointArrays = vectorText({ x: 0, y: 0, height: 0.25, input: mesg })");
wlog("");
wlog(" const lineSegments = []");
wlog(" lineSegmentPointArrays.forEach(function(segmentPoints) {");
wlog(" const corners = segmentPoints.map((point) => translate(point, lineCorner))");
wlog(" lineSegments.push(hullChain(corners))");
wlog(" })");
wlog(" const message2D = union(lineSegments)");
wlog(" return extrudeLinear({ height: w }, message2D)");
wlog("}");
wlog("function vtxt(_p1, num) {");
wlog(" str = num.toString()");
wlog(" p1 = coords[_p1]");
wlog(" la1 = degToRad(p1[0])");
wlog(" ph1 = degToRad(90 - p1[1])");
wlog(" return translate([0, 0, 0],");
wlog(" rotate([0, 0, la1],");
wlog(" rotate([0, -ph1, 0],");
wlog(" translate([sc+0.5, 0.15-0.25*str.length],");
wlog(" rotate([degToRad(90), 0, degToRad(90)],");
wlog(" colorize([0, 0, 0],");
wlog(" txt(str, 0.05)");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" )");
wlog("}");
wlog("function edge(_v, _w, _e) {");
wlog(" v = map_3D(coords[_v], sc)");
wlog(" w = map_3D(coords[_w], sc)");
wlog(" d = [0, 0, 0]");
wlog(" x = [0, 0, 0]");
wlog(" jscad.maths.vec3.subtract(d, w, v)");
wlog(" add(x, v, w)");
wlog(" scale(w, x, 0.5)");
wlog(" if (length(d) >= eps) {");
wlog(" return colorize([0, 0, 1, 1], ");
wlog(" translate(w, ");
wlog(" rotate([0, Math.acos(d[2]/length(d)), Math.atan2(d[1], d[0])],");
wlog(" cylinder({radius: 0.1, height: length(d)})");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" } else {");
wlog(" return cube({size: 0.01})");
wlog(" }");
wlog("}");
};
exports.header2 = function () {
wlog("function edge2(_p1, _p2, _e) {");
wlog(" p1 = coords[_p1]");
wlog(" p2 = coords[_p2]");
wlog(" // al/la/ph: alpha/lambda/phi | lxy/sxy: delta lambda_xy/sigma_xy");
wlog(" // https://en.wikipedia.org/wiki/Great-circle_navigation#Course");
wlog(" la1 = degToRad(p1[0])");
wlog(" la2 = degToRad(p2[0])");
wlog(" l12 = la2 - la1");
wlog(" ph1 = degToRad(90 - p1[1])");
wlog(" ph2 = degToRad(90 - p2[1])");
wlog(" al1 = Math.atan2(Math.cos(ph2)*Math.sin(l12), Math.cos(ph1)*Math.sin(ph2)-Math.sin(ph1)*Math.cos(ph2)*Math.cos(l12))");
wlog(" // delta sigma_12");
wlog(" // https://en.wikipedia.org/wiki/Great-circle_distance#Formulae");
wlog(" s12 = Math.acos(Math.sin(ph1)*Math.sin(ph2)+Math.cos(ph1)*Math.cos(ph2)*Math.cos(l12))");
wlog(" return rotate([0, 0, la1],");
wlog(" rotate([0, -ph1, 0],");
wlog(" rotate([degToRad(90)-al1, 0, 0],");
wlog(" colorize([0, 0, 0.7],");
wlog(" extrudeRotate({segments: 32, angle: s12},");
wlog(" circle({radius: 0.1, center: [sc,0]})");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" )");
wlog("}");
wlog("function sp_tria2(r, tang, pang, thi, points, segments) {");
wlog(" const coords = []");
wlog(" pts2 = Math.trunc(points / 2)");
wlog(" ");
wlog(" for(i = 0; i<pts2; i=i+1) {");
wlog(" th = i*(tang/(pts2-1))");
wlog(" coords.push([(r-thi/2)*Math.sin(th), (r-thi/2)*Math.cos(th)])");
wlog(" }");
wlog(" for(i = pts2-1; i>=0; i=i-1) {");
wlog(" th = i*(tang/(pts2-1))");
wlog(" coords.push([(r+thi/2)*Math.sin(th), (r+thi/2)*Math.cos(th)])");
wlog(" }");
wlog(" return extrudeRotate({segments: segments, angle: pang}, ");
wlog(" polygon({points: coords})");
wlog(" )");
wlog("}");
wlog("function sp_tria(_p1, _p2, _p3, sub) {");
wlog(" p1 = coords[_p1]");
wlog(" p2 = coords[_p2]");
wlog(" p3 = coords[_p3]");
wlog(" // al/la/ph: alpha/lambda/phi | lxy/sxy: delta lambda_xy/sigma_xy");
wlog(" // https://en.wikipedia.org/wiki/Great-circle_navigation#Course");
wlog(" la1 = degToRad(p1[0])");
wlog(" la2 = degToRad(p2[0])");
wlog(" la3 = degToRad(p3[0])");
wlog(" l12 = la2 - la1");
wlog(" l13 = la3 - la1");
wlog(" l32 = la2 - la3");
wlog(" l23 = la3 - la2");
wlog(" l31 = la1 - la3");
wlog(" ph1 = degToRad(90 - p1[1])");
wlog(" ph2 = degToRad(90 - p2[1])");
wlog(" ph3 = degToRad(90 - p3[1])");
wlog(" al12 = Math.atan2(Math.cos(ph2)*Math.sin(l12), Math.cos(ph1)*Math.sin(ph2)-Math.sin(ph1)*Math.cos(ph2)*Math.cos(l12))");
wlog(" al13 = Math.atan2(Math.cos(ph3)*Math.sin(l13), Math.cos(ph1)*Math.sin(ph3)-Math.sin(ph1)*Math.cos(ph3)*Math.cos(l13))");
wlog(" al31 = Math.atan2(Math.cos(ph1)*Math.sin(l31), Math.cos(ph3)*Math.sin(ph1)-Math.sin(ph3)*Math.cos(ph1)*Math.cos(l31))");
wlog(" al32 = Math.atan2(Math.cos(ph2)*Math.sin(l32), Math.cos(ph3)*Math.sin(ph2)-Math.sin(ph3)*Math.cos(ph2)*Math.cos(l32))");
wlog(" // delta sigma_xy");
wlog(" // https://en.wikipedia.org/wiki/Great-circle_distance#Formulae");
wlog(" s12 = Math.acos(Math.sin(ph1)*Math.sin(ph2)+Math.cos(ph1)*Math.cos(ph2)*Math.cos(l12))");
wlog(" s23 = Math.acos(Math.sin(ph2)*Math.sin(ph3)+Math.cos(ph2)*Math.cos(ph3)*Math.cos(l23))");
wlog(" s13 = Math.acos(Math.sin(ph1)*Math.sin(ph3)+Math.cos(ph1)*Math.cos(ph3)*Math.cos(l13))");
wlog("");
wlog(" if (s13 < s12) {");
wlog(" if (s12 >= s23) {");
wlog(" return sp_tria(_p1, _p3, _p2, sub)");
wlog(" } else {");
wlog(" return sp_tria(_p2, _p1, _p3, sub)");
wlog(" }");
wlog(" } else {");
wlog(" if (s13 < s23) {");
wlog(" return sp_tria(_p2, _p1, _p3, sub)");
wlog(" } else if (Math.abs(s13-s12-s23) >= eps) {");
wlog(" function mpi(ang) { return (ang < -Math.PI) ? 2*Math.PI + ang : ((ang > Math.PI) ? ang - 2*Math.PI : ang) }");
wlog("");
wlog(" v1 = map_3D(p1, 1)");
wlog(" v2 = map_3D(p2, 1)");
wlog(" v3 = map_3D(p3, 1)");
wlog(" ms = [0, 0, 0]");
wlog(" ms2 = [0, 0, 0]");
wlog(" sv1=[0, 0, 0]");
wlog(" sv2=[0, 0, 0]");
wlog(" sv3=[0, 0, 0]");
wlog(" s1=[0, 0, 0]");
wlog(" s2=[0, 0, 0]");
wlog(" s3=[0, 0, 0]");
wlog(" add(ms, v1, v2)");
wlog(" add(ms, ms, v3)");
wlog(" normalize(ms2, ms)");
wlog(" mi = Math.min(dot(v1, ms2), dot(v2, ms2), dot(v3, ms2))");
wlog("");
wlog(" scale(sv1, v1, sc)");
wlog(" scale(sv2, v2, sc)");
wlog(" scale(sv3, v3, sc)");
wlog(" scale(s1, sv1, 1/mi)");
wlog(" scale(s2, sv2, 1/mi)");
wlog(" scale(s3, sv3, 1/mi)");
wlog("");
wlog(" return colorize([0.5, 0.5, 0.5],");
wlog(" subtract(");
wlog(" intersect(");
wlog(" union(");
wlog(" translate([0, 0, 0],");
wlog(" rotate([0, 0, la1-degToRad(180)],");
wlog(" rotate([0, ph1-degToRad(90), 0],");
wlog(" rotate([0,0,-al13],");
wlog(" sp_tria2(sc, s12, mpi(al13-al12), 0.1, 24, 30)");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" ),");
wlog(" translate([0, 0, 0],");
wlog(" rotate([0, 0, la3-degToRad(180)],");
wlog(" rotate([0, ph3-degToRad(90), 0],");
wlog(" rotate([0, 0, -al31],");
wlog(" sp_tria2(sc, s23, mpi(al31-al32), 0.1, 24, 30)");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" )");
wlog(" ),");
wlog(" hull(");
wlog(" cube({center: sv1, size: 0.01})");
wlog(" ,cube({center: sv2, size: 0.01})");
wlog(" ,cube({center: sv3, size: 0.01})");
wlog(" ,cube({center: s1, size: 0.01})");
wlog(" ,cube({center: s2, size: 0.01})");
wlog(" ,cube({center: s3, size: 0.01})");
wlog(" )");
wlog(" )");
wlog(" ,sub)");
wlog(" )");
wlog(" } else {");
wlog(" return cube({size: 0.01})");
wlog(" }");
wlog(" }");
wlog("}");
};
}