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Chris Tate
c7b11a9242
- Emit callable Wasm reactors with explicit exports, host callbacks, and independent instance memory. - Compile three.js scene and geometry workloads into Wasm without an embedded JavaScript engine. - Document initialization, memory ownership, and external browser hosting.
33 lines
1.2 KiB
JavaScript
33 lines
1.2 KiB
JavaScript
/// <reference path="./three-host.d.ts" />
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import { PerspectiveCamera } from 'three/src/cameras/PerspectiveCamera.js';
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import { Scene } from 'three/src/scenes/Scene.js';
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import { BoxGeometry } from 'three/src/geometries/BoxGeometry.js';
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import { Mesh } from 'three/src/objects/Mesh.js';
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import { MeshNormalMaterial } from 'three/src/materials/MeshNormalMaterial.js';
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import { Vector3 } from 'three/src/math/Vector3.js';
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const camera = new PerspectiveCamera(70, 1, 0.01, 10);
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camera.position.z = 1;
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const scene = new Scene();
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const geometry = new BoxGeometry(0.2, 0.2, 0.2);
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const mesh = new Mesh(geometry, new MeshNormalMaterial());
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scene.add(mesh);
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const point = new Vector3();
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/** @param {number} time @param {number} aspect @returns {number} */
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export function frame(time, aspect) {
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camera.aspect = aspect;
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camera.updateProjectionMatrix();
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camera.updateMatrixWorld();
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mesh.rotation.x = time / 2000;
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mesh.rotation.y = time / 1000;
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scene.updateMatrixWorld(true);
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const position = geometry.getAttribute('position');
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for (let i = 0; i < position.count; i++) {
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point.fromBufferAttribute(position, i).applyMatrix4(mesh.matrixWorld).project(camera);
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vertex(i, point.x, point.y, point.z);
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}
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return Number(position.count);
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}
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