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@jscad/modeling

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Constructive Solid Geometry (CSG) Library for JSCAD

openjscad.xyz

jscad/OpenJSCAD.org

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const test = require('ava') const { comparePoints, comparePolygonsAsPoints } = require('../../../test/helpers') const { TAU } = require('../../maths/constants') const { geom2, geom3 } = require('../../geometries') const { extrudeRotate } = require('./index') test('extrudeRotate: (defaults) extruding of a geom2 produces an expected geom3', (t) => { const geometry2 = geom2.fromPoints([[10, 8], [10, -8], [26, -8], [26, 8]]) const geometry3 = extrudeRotate({ }, geometry2) const pts = geom3.toPoints(geometry3) t.notThrows(() => geom3.validate(geometry3)) t.is(pts.length, 96) }) test('extrudeRotate: (angle) extruding of a geom2 produces an expected geom3', (t) => { const geometry2 = geom2.fromPoints([[10, 8], [10, -8], [26, -8], [26, 8]]) // test angle let geometry3 = extrudeRotate({ segments: 4, angle: TAU / 8 }, geometry2) let pts = geom3.toPoints(geometry3) const exp = [ [[10, 0, 8], [26, 0, 8], [18.38477631085024, 18.384776310850235, 8]], [[10, 0, 8], [18.38477631085024, 18.384776310850235, 8], [7.0710678118654755, 7.071067811865475, 8]], [[10, 0, -8], [10, 0, 8], [7.0710678118654755, 7.071067811865475, 8]], [[10, 0, -8], [7.0710678118654755, 7.071067811865475, 8], [7.0710678118654755, 7.071067811865475, -8]], [[26, 0, -8], [10, 0, -8], [7.0710678118654755, 7.071067811865475, -8]], [[26, 0, -8], [7.0710678118654755, 7.071067811865475, -8], [18.38477631085024, 18.384776310850235, -8]], [[26, 0, 8], [26, 0, -8], [18.38477631085024, 18.384776310850235, -8]], [[26, 0, 8], [18.38477631085024, 18.384776310850235, -8], [18.38477631085024, 18.384776310850235, 8]], [[7.0710678118654755, 7.071067811865475, -8], [7.0710678118654755, 7.071067811865475, 8], [18.38477631085024, 18.384776310850235, 8]], [[18.38477631085024, 18.384776310850235, 8], [18.38477631085024, 18.384776310850235, -8], [7.0710678118654755, 7.071067811865475, -8]], [[26, 0, 8], [10, 0, 8], [10, 0, -8]], [[10, 0, -8], [26, 0, -8], [26, 0, 8]] ] t.notThrows(() => geom3.validate(geometry3)) t.is(pts.length, 12) t.true(comparePolygonsAsPoints(pts, exp)) geometry3 = extrudeRotate({ segments: 4, angle: -250 * 0.017453292519943295 }, geometry2) pts = geom3.toPoints(geometry3) t.notThrows(() => geom3.validate(geometry3)) t.is(pts.length, 28) geometry3 = extrudeRotate({ segments: 4, angle: 250 * 0.017453292519943295 }, geometry2) pts = geom3.toPoints(geometry3) t.notThrows(() => geom3.validate(geometry3)) t.is(pts.length, 28) }) test('extrudeRotate: (startAngle) extruding of a geom2 produces an expected geom3', (t) => { const geometry2 = geom2.fromPoints([[10, 8], [10, -8], [26, -8], [26, 8]]) // test startAngle let geometry3 = extrudeRotate({ segments: 5, startAngle: TAU / 8 }, geometry2) let pts = geom3.toPoints(geometry3) let exp = [ [7.0710678118654755, 7.071067811865475, 8], [18.38477631085024, 18.384776310850235, 8], [-11.803752993228215, 23.166169628897567, 8] ] t.notThrows(() => geom3.validate(geometry3)) t.is(pts.length, 40) t.true(comparePoints(pts[0], exp)) geometry3 = extrudeRotate({ segments: 5, startAngle: -TAU / 8 }, geometry2) pts = geom3.toPoints(geometry3) exp = [ [7.0710678118654755, -7.071067811865475, 8], [18.38477631085024, -18.384776310850235, 8], [23.166169628897567, 11.803752993228215, 8] ] t.notThrows(() => geom3.validate(geometry3)) t.is(pts.length, 40) t.true(comparePoints(pts[0], exp)) }) test('extrudeRotate: (segments) extruding of a geom2 produces an expected geom3', (t) => { let geometry2 = geom2.fromPoints([[10, 8], [10, -8], [26, -8], [26, 8]]) // test segments let geometry3 = extrudeRotate({ segments: 4 }, geometry2) let pts = geom3.toPoints(geometry3) t.notThrows(() => geom3.validate(geometry3)) t.is(pts.length, 32) geometry3 = extrudeRotate({ segments: 64 }, geometry2) pts = geom3.toPoints(geometry3) t.notThrows(() => geom3.validate(geometry3)) t.is(pts.length, 512) // test overlapping edges geometry2 = geom2.fromPoints([[0, 0], [2, 1], [1, 2], [1, 3], [3, 4], [0, 5]]) geometry3 = extrudeRotate({ segments: 8 }, geometry2) pts = geom3.toPoints(geometry3) t.notThrows(() => geom3.validate(geometry3)) t.is(pts.length, 64) // test overlapping edges that produce hollow shape geometry2 = geom2.fromPoints([[30, 0], [30, 60], [0, 60], [0, 50], [10, 40], [10, 30], [0, 20], [0, 10], [10, 0]]) geometry3 = extrudeRotate({ segments: 8 }, geometry2) pts = geom3.toPoints(geometry3) t.notThrows(() => geom3.validate(geometry3)) t.is(pts.length, 80) }) test('extrudeRotate: (overlap +/-) extruding of a geom2 produces an expected geom3', (t) => { // overlap of Y axis; even number of + and - points let geometry = geom2.fromPoints([[-1, 8], [-1, -8], [7, -8], [7, 8]]) let obs = extrudeRotate({ segments: 4, angle: TAU / 4 }, geometry) let pts = geom3.toPoints(obs) let exp = [ [[0, 0, 8], [7, 0, 8], [0, 7, 8]], [[7, 0, -8], [0, 0, -8], [0, 7, -8]], [[7, 0, 8], [7, 0, -8], [0, 7, -8]], [[7, 0, 8], [0, 7, -8], [0, 7, 8]], [[0, 0, -8], [0, 0, 8], [0, 7, 8]], [[0, 7, 8], [0, 7, -8], [0, 0, -8]], [[7, 0, 8], [0, 0, 8], [0, 0, -8]], [[0, 0, -8], [7, 0, -8], [7, 0, 8]] ] t.notThrows(() => geom3.validate(obs)) t.is(pts.length, 8) t.true(comparePolygonsAsPoints(pts, exp)) // overlap of Y axis; larger number of - points geometry = geom2.fromPoints([[-1, 8], [-2, 4], [-1, -8], [7, -8], [7, 8]]) obs = extrudeRotate({ segments: 8, angle: TAU / 4 }, geometry) pts = geom3.toPoints(obs) exp = [ [[1, 0, -8], [0, 0, -8], [0.7071067811865476, 0.7071067811865475, -8]], [[2, 0, 4], [1, 0, -8], [0.7071067811865476, 0.7071067811865475, -8]], [[2, 0, 4], [0.7071067811865476, 0.7071067811865475, -8], [1.4142135623730951, 1.414213562373095, 4]], [[1, 0, 8], [2, 0, 4], [1.4142135623730951, 1.414213562373095, 4]], [[1, 0, 8], [1.4142135623730951, 1.414213562373095, 4], [0.7071067811865476, 0.7071067811865475, 8]], [[0, 0, 8], [1, 0, 8], [0.7071067811865476, 0.7071067811865475, 8]], [[0.7071067811865476, 0.7071067811865475, -8], [0, 0, -8], [0, 1, -8]], [[1.4142135623730951, 1.414213562373095, 4], [0.7071067811865476, 0.7071067811865475, -8], [0, 1, -8]], [[1.4142135623730951, 1.414213562373095, 4], [0, 1, -8], [0, 2, 4]], [[0.7071067811865476, 0.7071067811865475, 8], [1.4142135623730951, 1.414213562373095, 4], [0, 2, 4]], [[0.7071067811865476, 0.7071067811865475, 8], [0, 2, 4], [0, 1, 8]], [[0, 0, 8], [0.7071067811865476, 0.7071067811865475, 8], [0, 1, 8]], [[0, 1, -8], [0, 0, -8], [0, 0, 8]], [[0, 0, 8], [0, 1, 8], [0, 2, 4]], [[0, 2, 4], [0, 1, -8], [0, 0, 8]], [[0, 0, 8], [0, 0, -8], [1, 0, -8]], [[2, 0, 4], [1, 0, 8], [0, 0, 8]], [[0, 0, 8], [1, 0, -8], [2, 0, 4]] ] t.notThrows(() => geom3.validate(obs)) t.is(pts.length, 18) t.true(comparePolygonsAsPoints(pts, exp)) }) // TEST HOLES