c7c211112b
* Fix `yarn test`: Move canvas to deps so it gets installed on CI * Try again * Back to dev * Test node 20 * Remove canvas, add jest-canvas-mock * Back to node v18
86 lines
2.9 KiB
TypeScript
86 lines
2.9 KiB
TypeScript
import 'jest-canvas-mock'
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import { BoxGeometry } from 'three'
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import { getCommonSphere, loadGeometry } from './three'
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describe('Function loadGeometry', () => {
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it('loads a three geometry from a 10x10mm box', () => {
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const box_10 = Buffer.from(
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`
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v 0.000000 0.000000 0.000000
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v 10.000000 0.000000 0.000000
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v 0.000000 0.000000 10.000000
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v 10.000000 0.000000 10.000000
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v 10.000000 10.000000 0.000000
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v 10.000000 10.000000 10.000000
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v 0.000000 10.000000 0.000000
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v 0.000000 10.000000 10.000000
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vn 0.000000 -1.000000 0.000000
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vn 0.000000 -1.000000 0.000000
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vn 1.000000 0.000000 0.000000
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vn 1.000000 -0.000000 0.000000
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vn 0.000000 1.000000 -0.000000
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vn 0.000000 1.000000 0.000000
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vn -1.000000 0.000000 0.000000
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vn -1.000000 -0.000000 0.000000
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vn 0.000000 0.000000 -1.000000
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vn 0.000000 0.000000 -1.000000
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vn 0.000000 0.000000 1.000000
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vn 0.000000 0.000000 1.000000
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f 1//1 2//1 3//1
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f 3//2 2//2 4//2
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f 2//3 5//3 4//3
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f 4//4 5//4 6//4
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f 5//5 7//5 6//5
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f 6//6 7//6 8//6
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f 7//7 1//7 8//7
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f 8//8 1//8 3//8
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f 1//9 5//9 2//9
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f 7//10 5//10 1//10
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f 6//11 3//11 4//11
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f 6//12 8//12 3//12
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`
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).toString('base64')
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const geometry = loadGeometry(box_10)
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expect(geometry?.attributes.position.count).toEqual(6 * 2 * 3)
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expect(geometry?.attributes.normal.count).toEqual(6 * 2 * 3)
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expect(geometry?.attributes.uv).toBeDefined()
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expect(geometry?.boundingSphere?.center.x).toEqual(5)
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expect(geometry?.boundingSphere?.center.y).toEqual(5)
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expect(geometry?.boundingSphere?.center.z).toEqual(5)
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const diagonal = 10 * Math.sqrt(3)
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expect(geometry?.boundingSphere?.radius).toBeCloseTo(diagonal / 2)
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})
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it('fails with an empty or invalid input', () => {
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expect(loadGeometry('invalid')).toBeUndefined()
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})
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})
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describe('Function getCommonSphere', () => {
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// 1mm cube with "top-right" corner at origin
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const box_1_geom = new BoxGeometry(1, 1, 1)
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box_1_geom.translate(-1 / 2, -1 / 2, -1 / 2)
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// 2mm cube with "bottom left" corner at origin
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const box_2_geom = new BoxGeometry(2, 2, 2)
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box_2_geom.translate(2 / 2, 2 / 2, 2 / 2)
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it('gets the common bounding sphere between two geometries', () => {
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const sphere = getCommonSphere(box_1_geom, box_2_geom)
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expect(sphere.center.x).toEqual((2 - 1) / 2)
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expect(sphere.center.y).toEqual((2 - 1) / 2)
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expect(sphere.center.z).toEqual((2 - 1) / 2)
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const bothDiagonals = (1 + 2) * Math.sqrt(3)
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expect(sphere.radius).toBeCloseTo(bothDiagonals / 2)
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})
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it('gets the same bounding sphere from two identical geometries', () => {
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box_1_geom.computeBoundingSphere()
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const sphere_1 = getCommonSphere(box_1_geom, box_1_geom)
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expect(sphere_1.equals(box_1_geom.boundingSphere!)).toBeTruthy()
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box_2_geom.computeBoundingSphere()
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const sphere_2 = getCommonSphere(box_2_geom, box_2_geom)
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expect(sphere_2.equals(box_2_geom.boundingSphere!)).toBeTruthy()
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})
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})
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