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69 lines
1.9 KiB
69 lines
1.9 KiB
import { assert, expect } from 'chai';
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import { Translation, Rotation, Scaling } from "../src/08/transformation";
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import Vector from "../src/05/vector";
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describe('Translation', () => {
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it('can be correctly initialized with a Vector', () => {
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const t: Translation = new Translation(new Vector(1.0, 2.0, 3.0, 0.0));
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expect(t).to.be.an('object');
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assert.deepEqual(t.getMatrix().getVals(), [
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1, 0, 0, 1,
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0, 1, 0, 2,
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0, 0, 1, 3,
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0, 0, 0, 1
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]);
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assert.deepEqual(t.getInverseMatrix().getVals(), [
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1, 0, 0, -1,
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0, 1, 0, -2,
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0, 0, 1, -3,
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0, 0, 0, 1
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]);
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});
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});
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describe('Rotation', () => {
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it('can be correctly initialized with an axis and an angle', () => {
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const r: Rotation = new Rotation(new Vector(0.0, 0.0, 1.0, 0.0), Math.PI / 4);
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console.log(r.matrix);
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expect(r).to.be.an('object');
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assert.deepEqual(r.getMatrix().getVals(), [
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0.7071067690849304, -0.7071067690849304, 0, 0,
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0.7071067690849304, 0.7071067690849304, 0, 0,
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0, 0, 1, 0,
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0, 0, 0, 1
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]);
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assert.deepEqual(r.getInverseMatrix().getVals(), [
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0.7071067690849304, 0.7071067690849304, 0, 0,
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-0.7071067690849304, 0.7071067690849304, 0, 0,
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0, 0, 1, 0,
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0, 0, 0, 1
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]);
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});
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});
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describe('Scaling', () => {
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it('can be correctly initialized with a Vector', () => {
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const s: Scaling = new Scaling(new Vector(1.0, 2.0, 4.0, 0.0));
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expect(s).to.be.an('object');
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assert.deepEqual(s.getMatrix().getVals(), [
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1, 0, 0, 0,
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0, 2, 0, 0,
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0, 0, 4, 0,
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0, 0, 0, 1
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]);
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assert.deepEqual(s.getInverseMatrix().getVals(), [
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1, 0, 0, 0,
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0, 1/2, 0, 0,
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0, 0, 1/4, 0,
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0, 0, 0, 1
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]);
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});
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});
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