54 lines
2.1 KiB
JavaScript
54 lines
2.1 KiB
JavaScript
import { TextureLoader, MeshStandardMaterial, MeshBasicMaterial, PlaneGeometry, Mesh, DoubleSide, Vector3 } from "three";
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class ImageObject {
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constructor(engine, obj) {
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return new Promise(async(resolve, reject)=>{
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var t = await engine.loadTexture(obj.value, obj.path)
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var mp = {
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map: t,
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alphaTest: 0.5,
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side: DoubleSide
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};
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if (obj.nm) {
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mp.normalMap = new TextureLoader().setPath(obj.path).load(obj.nm);
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}
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if (obj.em) {
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mp.emissiveMap = new TextureLoader().setPath(obj.path).load(obj.em);
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}
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if (obj.am) {
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mp.alphaMap = new TextureLoader().setPath(obj.path).load(obj.am);
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}
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obj.material && Object.assign(mp, obj.material);
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let geo = new PlaneGeometry(obj.width || 1, obj.height || 1);
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if (obj.uv) {
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var uvAttribute = geo.attributes.uv;
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for (var i = 0; i < uvAttribute.count; i++) {
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uvAttribute.setXY(i, obj.uv[2 * i], obj.uv[2 * i + 1]);
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}
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}
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this.object = new Mesh(geo, mp.metalness ? new MeshStandardMaterial(mp) : new MeshBasicMaterial(mp));
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if (obj.distance) {
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const o = this.object;
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let dstm = obj.distance;
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var oldBR = o.onBeforeRender;
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o.material.opacity = 0.01;
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o.onBeforeRender = function (renderer, scene, camera) {
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oldBR && oldBR.apply(this, arguments);
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var v = new Vector3();
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o.getWorldPosition(v);
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var dst = camera.position.distanceTo(v);
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if (dst < dstm * 2 && dst > dstm * 1) {
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o.material.opacity = dstm * 1 - (dst - dstm * 1);
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}
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if (dst < .5 * dstm) {
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o.material.opacity = dstm * dst * 2;
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}
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};
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}
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resolve(this)
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})
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}
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}
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export {ImageObject} |