From 79e0dfd962ab7ec0119b9fad85a9bc442c647510 Mon Sep 17 00:00:00 2001
From: pacmandoh <pacmandoh@outlook.com>
Date: Fri, 29 Mar 2024 04:50:40 +0800
Subject: [PATCH] perf(types & composables): convert the array in types and
 useSelectModel() into class

* chore(index): modify page title and description

* chore(index): remove unnecessary comments and empty lines

* perf(index): add conditional logic to determine whether to add light

* perf(composables): make the parameters case-insensitive
---
 composables/useSelectModel.ts |  65 +++++++++++------
 pages/index.vue               | 129 +++++++++++++++++-----------------
 types/model.ts                |  12 +++-
 3 files changed, 115 insertions(+), 91 deletions(-)

diff --git a/composables/useSelectModel.ts b/composables/useSelectModel.ts
index 55f4313..818c022 100644
--- a/composables/useSelectModel.ts
+++ b/composables/useSelectModel.ts
@@ -5,72 +5,91 @@ export const useSelectModel = () => {
   const route = useRoute()
 
   const models: Models = {
-    duramax: {
+    Duramax: {
       cosModelName: 'duramaxDieselV8t-draco.glb',
       cameraOffset: 300
     },
-    audiS8: {
+    AudiS8: {
       cosModelName: 'audiS8-draco.glb',
       cameraOffset: 90
     },
-    carEngine1: {
+    CarEngine1: {
       cosModelName: 'carEngine1-draco.glb',
       cameraOffset: 270
     },
-    carEngine2: {
+    CarEngine2: {
       cosModelName: 'carEngine2-draco.glb',
       cameraOffset: 300
     },
-    carEngine3: {
+    CarEngine3: {
       cosModelName: 'carEngine3-draco.glb',
       cameraOffset: 80,
-      lightIntensity: [0, 3, 3, 3]
+      lightIntensity: {
+        ambient: 0,
+        dirFront: 3,
+        spotFront: 0,
+        dirTop: 3,
+        dirBottom: 3
+      }
     },
-    bugattiW16: {
+    BugattiW16: {
       cosModelName: 'bugattiW16-draco.glb',
-      cameraOffset: 2,
-      cameraLock: [0, 1, 0],
-      rotationAxis: 'y'
+      cameraOffset: 1.3,
+      cameraLock: { x: 0, y: 1, z: 0 },
+      rotationAxis: 'y',
+      lightIntensity: {
+        ambient: 0,
+        dirFront: 0,
+        spotFront: 1,
+        dirTop: 1,
+        dirBottom: 1
+      }
     },
-    chevroletCorvetteV8: {
+    ChevroletCorvetteV8: {
       cosModelName: 'chevroletCorvetteV8-draco.glb',
       cameraOffset: 120
     },
-    cumminsX15Truck: {
+    CumminsX15Truck: {
       cosModelName: 'cumminsX15Truck-draco.glb',
       cameraOffset: 380
     },
-    dodgeChallengerV8: {
+    DodgeChallengerV8: {
       cosModelName: 'dodgeChallengerV8-draco.glb',
       cameraOffset: 410
     },
-    fordMotorEngine: {
+    FordMotorEngine: {
       cosModelName: 'fordMotorEngine-draco.glb',
       cameraOffset: 20,
-      cameraLock: [0, 1, 0],
-      lightIntensity: [0, 0, 2, 2],
+      cameraLock: { x: 0, y: 1, z: 0 },
+      lightIntensity: {
+        ambient: 0,
+        dirFront: 0,
+        spotFront: 0,
+        dirTop: 2,
+        dirBottom: 2
+      },
       rotationAxis: 'y'
     },
-    industrialDiesel: {
+    IndustrialDiesel: {
       cosModelName: 'industrialDiesel-draco.glb',
       cameraOffset: 250
     },
-    nissanAltimaHybrid4Cylinder: {
+    NissanAltimaHybrid4Cylinder: {
       cosModelName: 'nissanAltimaHybrid4Cylinder-draco.glb',
       cameraOffset: 90
     },
-    v12CarEngine: {
+    V12CarEngine: {
       cosModelName: 'v12CarEngine-draco.glb',
       cameraOffset: 120
     },
-    v8CarEngine: {
+    V8CarEngine: {
       cosModelName: 'v8CarEngine-draco.glb',
       cameraOffset: 60
     }
   }
-  const selectedModel = models[route.query.model as string] || models.duramax
-  const needDropdown = route.query.needDropdown ? (route.query.needDropdown === 'true') : true
-  const needBottomButton = route.query.needBottomButton ? (route.query.needBottomButton === 'true') : true
+  const selectedModel = models[route.query.model?.toString().toLowerCase() as string] || models.Duramax
+  const needDropdown = route.query.needDropdown ? (route.query.needDropdown?.toString().toLowerCase() === 'true') : true
+  const needBottomButton = route.query.needBottomButton ? (route.query.needBottomButton?.toString().toLowerCase() === 'true') : true
 
   return { selectedModel, models, needDropdown, needBottomButton }
 }
diff --git a/pages/index.vue b/pages/index.vue
index c656f01..f9c83cd 100644
--- a/pages/index.vue
+++ b/pages/index.vue
@@ -45,22 +45,14 @@
 
 <script setup lang="ts">
 import * as Three from 'three'
-// interaction module
 import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js'
-// glb or gltf files loader
 import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader.js'
-
-// draco loader
 import { DRACOLoader } from 'three/examples/jsm/loaders/DRACOLoader.js'
-
-// MesOpt zip
 // import { MeshoptDecoder } from 'three/examples/jsm/libs/meshopt_decoder.module.js'
-
-// ResourceTracker
 import ResourceTracker from '../composables/useTrack'
 
-const title = 'PacDocs: 3D Model of Engines'
-const description = '3D Engines for PacDocs'
+const title = 'PacDocs: 3D Models by three.js'
+const description = '3D Models for PacDocs by three.js'
 useSeoMeta({
   title,
   ogTitle: title,
@@ -78,73 +70,87 @@ const toggleColorMode = () => {
     ? 'dark'
     : 'light'
 }
-
 const BASE = 'https://imgbucket-1318471229.cos.ap-beijing.myqcloud.com/model/'
 const MODEL = selectedModel.cosModelName
-
 const resTracker = new ResourceTracker()
 const track = resTracker.track.bind(resTracker)
-
 const progress = ref<number>()
-
 const { width, height } = useWindowSize()
 const sizes = computed(() => {
   return { width: width.value, height: height.value }
 })
-
 const ready = ref(false)
 
 let clearScene: () => void
 let updateSizes: () => void
 
 const renderModel = async (): Promise<void> => {
-  // sizes
+  const cameraOffset = selectedModel.cameraOffset
   const { width: sWidth, height: sHeight } = sizes.value
-
-  // Canvas
   const canvas = document.querySelector<HTMLCanvasElement>('canvas#pacdocs-engine')!
 
-  // Scene
   const scene = track(new Three.Scene())
   const loader = track(new GLTFLoader())
 
+  // Compress Descode
   const dracoLoader = track(new DRACOLoader())
   dracoLoader.setDecoderPath('./draco/')
   loader.setDRACOLoader(dracoLoader)
-
-  // MeshOpt // FIX can not clear memory correct
+  // MeshOpt
   // loader.setMeshoptDecoder(MeshoptDecoder)
 
   // Lights
-  const lightIntensity = selectedModel.lightIntensity ? selectedModel.lightIntensity : [0, 1, 3, 3]
-  const ambientLight = track(new Three.AmbientLight(0xffffff, lightIntensity[0]))
-  const directionalLightFront = track(new Three.DirectionalLight(0xffffff, lightIntensity[1]))
-  const directionalLightTop = track(new Three.DirectionalLight(0xffffff, lightIntensity[2]))
-  const directionalLightBottom = track(new Three.DirectionalLight(0xffffff, lightIntensity[3]))
-
-  scene.add(ambientLight)
-  scene.add(directionalLightFront)
-  scene.add(directionalLightTop)
-  scene.add(directionalLightBottom)
+  let directionalLightFront: Three.DirectionalLight, spotLightFront: Three.SpotLight
+  const lightIntensity = selectedModel.lightIntensity ? selectedModel.lightIntensity : { ambient: 0, dirFront: 1, spotFront: 0, dirTop: 3, dirBottom: 1 }
+  // ambient
+  if (lightIntensity.ambient !== 0) {
+    const ambientLight = track(new Three.AmbientLight(0xffffff, lightIntensity.ambient))
+    scene.add(ambientLight)
+  }
+  // dirFront
+  if (lightIntensity.dirFront !== 0) {
+    directionalLightFront = track(new Three.DirectionalLight(0xffffff, lightIntensity.dirFront))
+    scene.add(directionalLightFront)
+  }
+  // dirTop
+  if (lightIntensity.dirTop !== 0) {
+    const directionalLightTop = track(new Three.DirectionalLight(0xffffff, lightIntensity.dirTop))
+    scene.add(directionalLightTop)
+    if (selectedModel.rotationAxis) {
+      if (selectedModel.rotationAxis === 'x') directionalLightTop.position.set(cameraOffset, 0, 0)
+      if (selectedModel.rotationAxis === 'y') directionalLightTop.position.set(0, cameraOffset, 0)
+    } else {
+      directionalLightTop.position.set(0, 0, cameraOffset)
+    }
+  }
+  // dirBottom
+  if (lightIntensity.dirBottom !== 0) {
+    const directionalLightBottom = track(new Three.DirectionalLight(0xffffff, lightIntensity.dirBottom))
+    scene.add(directionalLightBottom)
+    if (selectedModel.rotationAxis) {
+      if (selectedModel.rotationAxis === 'x') directionalLightBottom.position.set(-cameraOffset, 0, 0)
+      if (selectedModel.rotationAxis === 'y') directionalLightBottom.position.set(0, -cameraOffset, 0)
+    } else {
+      directionalLightBottom.position.set(0, 0, -cameraOffset)
+    }
+  }
+  // spotFront
+  if (lightIntensity.spotFront !== 0) {
+    spotLightFront = track(new Three.SpotLight(0xffffff, lightIntensity.spotFront))
+    spotLightFront.angle = Math.PI * 0.2
+    spotLightFront.decay = 0
+    scene.add(spotLightFront)
+  }
 
   // Base camera
   const camera = track(new Three.PerspectiveCamera(45, sWidth / sHeight, 1, 1000))
-  const cameraLock = selectedModel.cameraLock || [0, 0, 1]
-  camera.up.set(cameraLock[0], cameraLock[1], cameraLock[2]) // lock Z-axis toward up
-  const cameraOffset = selectedModel.cameraOffset // camera height
-  const cameraPositionArray = selectedModel.cameraPosition || [cameraOffset, cameraOffset, cameraOffset]
-  const cameraPosition = track(new Three.Vector3(cameraPositionArray[0], cameraPositionArray[1], cameraPositionArray[2]))
+  const cameraLock = selectedModel.cameraLock || { x: 0, y: 0, z: 1 }
+  camera.up.set(cameraLock.x, cameraLock.y, cameraLock.z) // lock axis toward up
+  const cameraPositionClass = selectedModel.cameraPosition || { x: cameraOffset, y: cameraOffset, z: cameraOffset }
+  const cameraPosition = track(new Three.Vector3(cameraPositionClass.x, cameraPositionClass.y, cameraPositionClass.z))
   camera.position.copy(cameraPosition)
   camera.lookAt(0, 0, 0)
 
-  if (selectedModel.rotationAxis) {
-    if (selectedModel.rotationAxis === 'x') directionalLightTop.position.set(cameraOffset, 0, 0); directionalLightBottom.position.set(-cameraOffset, 0, 0)
-    if (selectedModel.rotationAxis === 'y') directionalLightTop.position.set(0, cameraOffset, 0); directionalLightBottom.position.set(0, -cameraOffset, 0)
-  } else {
-    directionalLightTop.position.set(0, 0, cameraOffset)
-    directionalLightBottom.position.set(0, 0, -cameraOffset)
-  }
-
   // Base Controls
   const controls = track(new OrbitControls(camera, canvas))
   controls.enableZoom = false
@@ -154,29 +160,26 @@ const renderModel = async (): Promise<void> => {
   // controls.minPolarAngle = Math.PI / 2
   // controls.maxPolarAngle = Math.PI / 2
 
-  // Render
+  // Renderer
   const renderer = track(new Three.WebGLRenderer({
     alpha: false,
     antialias: true,
     canvas
   }))
-  // render background
   renderer.setClearColor(0x000000, 0)
   renderer.shadowMap.enabled = true // enable shadow
   renderer.shadowMap.type = Three.PCFSoftShadowMap
   renderer.setSize(sWidth, sHeight)
   renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2))
 
-  // clock timer
   const clock = track(new Three.Clock())
 
-  // render Model
+  // Main
   await Promise.all([
     new Promise<void>((reslove) =>
       loader.load(BASE + MODEL, (gltf: { scene: Three.Object3D }) => {
         const model = gltf.scene
         track(gltf.scene)
-
         model.traverse((child: Three.Object3D) => {
           if (child instanceof Three.Mesh) {
             if (child.material instanceof Three.MeshStandardMaterial) {
@@ -194,37 +197,33 @@ const renderModel = async (): Promise<void> => {
             }
           }
         })
-        model.castShadow = true // need object cast shadow
-        model.receiveShadow = true // need object receive shadow
-
-        // computed model center point
+        model.castShadow = true
+        model.receiveShadow = true
+        // Computed model center point
         const boundingBox = track(new Three.Box3().setFromObject(model))
         const center = track(new Three.Vector3())
         const size = track(new Three.Vector3())
         boundingBox.getSize(size)
         boundingBox.getCenter(center)
-
-        // offset model center to origin point
+        // Offset model center to origin point
         const moveVector = track(new Three.Vector3(0, 0, 0).sub(center))
         model.position.add(moveVector)
-
-        // add model to scene
+        // Add model to scene
         if (!scene.getObjectByName('modelName')) {
           scene.add(model)
         }
 
-        // helper
+        // Helper
         // const axisHelper = new Three.AxesHelper(1000)
         // scene.add(axisHelper)
 
-        // Group
-        // Solve the problem of rotation after the middle point of the mobile model to the origin.
+        // Container
         const container = track(new Three.Group())
         container.add(model)
         scene.add(container)
         container.position.set(0, 0, 0)
 
-        // Render
+        // Render & Animation
         const tick = (): void => {
           const elapsedTime = clock.getElapsedTime()
           if (selectedModel.rotationAxis) {
@@ -233,19 +232,19 @@ const renderModel = async (): Promise<void> => {
           } else {
             container.rotation.z = 0.5 * elapsedTime
           }
-
           // Update controls
           controls.update()
           // Render
           renderer.render(scene, camera)
           // Call tick again on the next frame
           window.requestAnimationFrame(tick)
-
-          // get animated camera position
+          // Get animated camera position
           const cameraPosition = camera.position.clone()
-          directionalLightFront.position.copy(cameraPosition)
+          if (lightIntensity.dirFront !== 0) directionalLightFront.position.copy(cameraPosition)
+          if (lightIntensity.spotFront !== 0) spotLightFront.position.copy(cameraPosition)
         }
 
+        // Adapting function
         updateSizes = (): void => {
           renderer.setSize(width.value, height.value)
           camera.aspect = width.value / height.value
diff --git a/types/model.ts b/types/model.ts
index e30dabb..41e1e3e 100644
--- a/types/model.ts
+++ b/types/model.ts
@@ -1,9 +1,15 @@
 export interface Model {
   cosModelName: string,
   cameraOffset: number,
-  cameraPosition?: [number, number, number],
-  cameraLock?: [number, number, number],
-  lightIntensity?: [number, number, number, number],
+  cameraPosition?: { x: number, y: number, z: number },
+  cameraLock?: { x: number, y: number, z: number },
+  lightIntensity?: {
+    ambient: number,
+    dirFront: number,
+    spotFront: number,
+    dirTop: number,
+    dirBottom: number
+  },
   rotationAxis?: string
 }