add gem

src/meshes/Gem.js

@@ -0,0 +1,68 @@
+import {
+  BackSide,
+  CubeCamera,
+  FrontSide,
+  LinearMipmapLinearFilter,
+  Mesh as TMesh,
+  RGBFormat,
+  WebGLCubeRenderTarget,
+} from 'three';
+// import { watch } from 'vue';
+import Mesh from '../meshes/Mesh.js';
+import useBindProp from '../use/useBindProp.js';
+
+export default {
+  extends: Mesh,
+  props: {
+    cubeRTSize: { type: Number, default: 512 },
+    cubeCameraNear: { type: Number, default: 0.1 },
+    cubeCameraFar: { type: Number, default: 2000 },
+  },
+  mounted() {
+    this.initGem();
+    this.three.onBeforeRender(this.updateCubeRT);
+  },
+  unmounted() {
+    this.three.offBeforeRender(this.upateCubeRT);
+  },
+  methods: {
+    initGem() {
+      const cubeRT = new WebGLCubeRenderTarget(this.cubeRTSize, { format: RGBFormat, generateMipmaps: true, minFilter: LinearMipmapLinearFilter });
+      this.cubeCamera = new CubeCamera(this.cubeCameraNear, this.cubeCameraFar, cubeRT);
+      useBindProp(this, 'position', this.cubeCamera.position);
+      this.scene.add(this.cubeCamera);
+
+      this.material.side = FrontSide;
+      this.material.envMap = cubeRT.texture;
+      this.material.envMapIntensity = 10;
+      this.material.metalness = 0;
+      this.material.roughness = 0;
+      this.material.opacity = 0.75;
+      this.material.transparent = true;
+      this.material.premultipliedAlpha = true;
+      this.material.needsUpdate = true;
+
+      this.backMaterial = this.material.clone();
+      this.backMaterial.envMapIntensity = 5;
+      this.material.metalness = 1;
+      this.material.roughness = 0;
+      this.backMaterial.opacity = 0.5;
+      this.backMaterial.side = BackSide;
+
+      this.meshBack = new TMesh(this.geometry, this.backMaterial);
+
+      useBindProp(this, 'position', this.meshBack.position);
+      useBindProp(this, 'rotation', this.meshBack.rotation);
+      useBindProp(this, 'scale', this.meshBack.scale);
+      this.scene.add(this.meshBack);
+    },
+    updateCubeRT() {
+      this.mesh.visible = false;
+      this.meshBack.visible = false;
+      this.cubeCamera.update(this.three.renderer, this.scene);
+      this.mesh.visible = true;
+      this.meshBack.visible = true;
+    },
+  },
+  __hmrId: 'Gem',
+};

src/meshes/index.js

@@ -18,6 +18,7 @@ export { default as Torus } from './Torus.js';
 export { default as TorusKnot } from './TorusKnot.js';
 export { default as Tube } from './Tube.js';
 
+export { default as Gem } from './Gem.js';
 export { default as Image } from './Image.js';
 export { default as InstancedMesh } from './InstancedMesh.js';
 export { default as MirrorMesh } from './MirrorMesh.js';

src/plugin.js

@@ -56,6 +56,7 @@ export const TroisJSVuePlugin = {
       'TorusKnot',
       'Tube',
 
+      'Gem',
       'Image',
       'InstancedMesh',
       'MirrorMesh',