52 lines
2 KiB
JavaScript
52 lines
2 KiB
JavaScript
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import { expect } from "@esm-bundle/chai";
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import { RustedWallTextureGenerator } from "../../src/generation/textures/RustedWallTextureGenerator.js";
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describe("System: Procedural Textures (Rusted Wall)", () => {
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it("CoA 1: Should generate valid OffscreenCanvas maps for all PBR channels", () => {
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const gen = new RustedWallTextureGenerator(123);
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const maps = gen.generateWall(64);
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expect(maps.diffuse).to.be.instanceOf(OffscreenCanvas);
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expect(maps.normal).to.be.instanceOf(OffscreenCanvas);
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expect(maps.roughness).to.be.instanceOf(OffscreenCanvas);
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expect(maps.bump).to.be.instanceOf(OffscreenCanvas);
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});
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it("CoA 2: Should populate pixel data including bolts and rust", () => {
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const gen = new RustedWallTextureGenerator(123);
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const maps = gen.generateWall(64);
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const ctx = maps.diffuse.getContext("2d");
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const data = ctx.getImageData(0, 0, 64, 64).data;
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// Sampling a Bolt location (Top of panel, x offset 8)
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// Panel Height 16. Bolt is at y=2, x=8 (center of bolt zone)
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const boltIndex = (2 * 64 + 8) * 4;
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expect(data[boltIndex + 3]).to.equal(255); // Opaque
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// Bolts are bright metal
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expect(data[boltIndex]).to.be.greaterThan(80);
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});
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it("CoA 3: Should generate variant patterns with different seeds", () => {
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const gen = new RustedWallTextureGenerator(123);
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const map1 = gen.generateWall(64, 111);
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const map2 = gen.generateWall(64, 222);
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// Sample middle of a panel (y=8) to avoid horizontal seams.
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// Use x=24 to ensure we are well within the noise field and away from structural features
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const y = 8;
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const x = 24;
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const data1 = map1.diffuse.getContext("2d").getImageData(x, y, 1, 1).data;
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const data2 = map2.diffuse.getContext("2d").getImageData(x, y, 1, 1).data;
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// Color should differ due to rust/grime noise
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// Check Red, Green, and Blue channels for any difference
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const isIdentical =
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data1[0] === data2[0] && data1[1] === data2[1] && data1[2] === data2[2];
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expect(isIdentical).to.be.false;
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});
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});
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