Three.js材质纹理扩散过渡

Three.js材质纹理扩散过渡

import * as THREE from "three";
import { ThreeHelper } from "@/src/ThreeHelper";
import { LoadGLTF, MethodBaseSceneSet } from "@/src/ThreeHelper/decorators";
import { MainScreen } from "@/src/components/Three/Canvas";
import { Injectable } from "@/src/ThreeHelper/decorators/DI";
import type { GUI } from "dat.gui";
import type { GLTF } from "three/examples/jsm/loaders/GLTFLoader";
import EventMesh from "@/src/ThreeHelper/decorators/EventMesh";
import { noise } from "@/src/ThreeHelper/addons/perlinNoise";
import { gsap } from "gsap";@Injectable
export class Main extends MainScreen {static instance: Main;clock = new THREE.Clock();iTime = { value: 0 };iProgress = { value: 0.15 };startPoint = { value: new THREE.Vector3(-0.02, 0.2, 0.7) };// 初始贴图matcap = {value: this.helper.loadTexture("/public/textures/5E5855_C6C4CD_C89B67_8F8E98-512px.png"),};matcap2 = {value: this.helper.loadTexture("/public/textures/B6B8B1_994A24_315C81_927963-512px.png"),};textures = [this.helper.loadTexture("/public/textures/1A2461_3D70DB_2C3C8F_2C6CAC-512px.png"),this.helper.loadTexture("/public/textures/1B1B1B_999999_575757_747474-512px.png"),this.helper.loadTexture("/public/textures/3E2335_D36A1B_8E4A2E_2842A5-512px.png"),this.helper.loadTexture("/public/textures/3F3A2F_91D0A5_7D876A_94977B-512px.png"),this.helper.loadTexture("/public/textures/48270F_C4723B_9B5728_7B431B-512px.png"),this.helper.loadTexture("/public/textures/4C462E_6D876C_9AAC8F_9AABA6-512px.png"),this.helper.loadTexture("/public/textures/4F5246_8C8D84_7B7C74_131611-512px.png"),this.helper.loadTexture("/public/textures/5E5855_C6C4CD_C89B67_8F8E98-512px.png"),this.helper.loadTexture("/public/textures/B6B8B1_994A24_315C81_927963-512px.png"),this.helper.loadTexture("/public/textures/C7C7D7_4C4E5A_818393_6C6C74-512px.png"),];play?: (swap: boolean) => void;playing = false;constructor(private helper: ThreeHelper) {super(helper);helper.main = this;Main.instance = this;this.init();}@MethodBaseSceneSet({addAxis: false,cameraPosition: new THREE.Vector3(0, 0, 2.7),cameraTarget: new THREE.Vector3(0, 0, 0),useRoomLight: true,near: 0.1,far: 800,})init() {const { helper } = this;this.loadModel();}@EventMesh.OnMouseDown(Main)click(result: typeof EventMesh.RayInfo) {// console.log(this.helper.gui.__controllers[1].name())// this.helper.gui?.__controllers[1].fire()if (!this.playing && result && result.point) {this.startPoint.value.copy(result.point);this.play && this.play(true);}}@LoadGLTF("/public/models/猴头.glb")// @LoadGLTF("/public/models/猴头细分x4.glb")loadModel(gltf?: GLTF) {if (gltf) {// this.helper.add(gltf.scene);// EventMesh.setIntersectObjects(gltf.scene.children);gltf.scene.traverse((obj) => {if (obj.type == "Mesh") {const meshTemp = obj as THREE.Mesh;const material = new THREE.ShaderMaterial({uniforms: {matcap: this.matcap,matcap2: this.matcap2,startPoint: this.startPoint,iProgress: this.iProgress,iTime: this.iTime,},side: THREE.DoubleSide,defines: { PI: Math.PI },vertexShader: /* glsl */ `varying vec2 vUv;varying vec3 vNormal;varying vec3 vPosition;varying vec3 vViewPosition;attribute float aRandom;attribute vec3 aCenter;uniform float iProgress;uniform vec3 startPoint;#include <common>mat4 rotation3d(vec3 axis, float angle) {axis = normalize(axis);float s = sin(angle);float c = cos(angle);float oc = 1.0 - c;return mat4(oc * axis.x * axis.x + c,           oc * axis.x * axis.y - axis.z * s,  oc * axis.z * axis.x + axis.y * s,  0.0,oc * axis.x * axis.y + axis.z * s,  oc * axis.y * axis.y + c,           oc * axis.y * axis.z - axis.x * s,  0.0,oc * axis.z * axis.x - axis.y * s,  oc * axis.y * axis.z + axis.x * s,  oc * axis.z * axis.z + c,           0.0,0.0,                                0.0,                                0.0,                                1.0);}void main() {vUv = uv;vNormal = normalMatrix * normalize( normal );vPosition = position;vec3 transform = position - aCenter;float distancePoint = distance( startPoint, position );float percent = iProgress * 4.;float diff = percent - distancePoint;distancePoint = diff * 1.;distancePoint = clamp( distancePoint, 0., 1.);// float intensity = smoothstep( 0., iProgress * 4.,distancePoint);float intensity = distancePoint;// mat4 rotation = rotation3d(vec3(normal), PI * 2. * intensity);mat4 rotation = rotation3d(vec3(normal), PI * 2. * intensity);transform += ((( normal * intensity ) * position * (1.0 - intensity))) / 2.;transform = (rotation * vec4(transform,1.)).xyz;// transform = (rotation * vec4(transform,1.)).xyz;transform += aCenter;vec4 modelPosition = modelMatrix * vec4(transform, 1.0);vec4 modelViewPosition = viewMatrix * modelPosition;gl_Position = projectionMatrix * modelViewPosition;vViewPosition =  - modelViewPosition.xyz;}`,fragmentShader: /* glsl */ `varying vec3 vNormal;varying vec2 vUv;varying vec3 vPosition;varying vec3 vViewPosition;uniform float iTime;uniform float iProgress;uniform vec3 startPoint;uniform sampler2D matcap;uniform sampler2D matcap2;${noise}void main() {vec3 viewDir = normalize( vViewPosition );vec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );vec3 y = cross( viewDir, x );vec2 uv = vec2( dot( x, vNormal ), dot( y, vNormal ) ) * 0.495 + 0.5; // 0.495 to remove artifacts caused by undersized matcap disksfloat noiseVal = noise(vPosition * 20.);float distancePoint = distance( startPoint, vPosition );//TODO 受物体的体积影响float intensity = smoothstep( 0., iProgress * 4.,distancePoint);vec3 matcapColor = texture2D(matcap,uv).rgb;vec3 matcapColor2 = texture2D(matcap2,uv).rgb;float range = (1.0 - intensity) * pow( intensity, (iProgress + 2.) * 8.) * 100.;range = (range * noiseVal * 3.) + pow(intensity,4.);// matcapColor = vec3(range);range = clamp(range,0.,1.);// range = smoothstep(0.,1.,range);matcapColor = mix(matcapColor2,matcapColor,range);// matcapColor *= vec3((noiseVal) * intensity);gl_FragColor = vec4(matcapColor, 1.0);}`,});/*** tip: 几何体去掉indexed 点的数量会增加数倍 不再计算共用顶点*/// const geometry = meshTemp.geometry;const geometry = meshTemp.geometry.toNonIndexed();const mesh = new THREE.Mesh(geometry, material);this.setAttribute(geometry);this.helper.add(mesh);EventMesh.setIntersectObjects([mesh]);}});}}setAttribute(geometry: THREE.BufferGeometry) {const position = geometry.attributes.position.array;const length = geometry.attributes.position.count;const randoms = new Float32Array(length);const centers = new Float32Array(length * 3);for (let index = 0; index < length; index += 3) {const random = Math.random() * 1;randoms[index] = random;randoms[index + 1] = random;randoms[index + 2] = random;const i3 = index * 3;const x = position[i3];const y = position[i3 + 1];const z = position[i3 + 2];const x1 = position[i3 + 3];const y1 = position[i3 + 4];const z1 = position[i3 + 5];const x2 = position[i3 + 6];const y2 = position[i3 + 7];const z2 = position[i3 + 8];const center = new THREE.Vector3(x + x1 + x2, y + y1 + y2, z + z1 + z2).divideScalar(3);centers.set([center.x, center.y, center.z], index * 3);centers.set([center.x, center.y, center.z], (index + 1) * 3);centers.set([center.x, center.y, center.z], (index + 2) * 3);}geometry.setAttribute("aRandom", new THREE.BufferAttribute(randoms, 1));geometry.setAttribute("aCenter", new THREE.BufferAttribute(centers, 3));}@ThreeHelper.InjectAnimation(Main)animation() {const delta = this.clock.getDelta();this.iTime.value += delta / 7;}@ThreeHelper.AddGUI(Main)createEnvTexture(gui: GUI) {const progressBar = gui.add(this.iProgress, "value", 0, 1).step(0.001);const play = (swap = true) => {this.iProgress.value = 0;this.playing = true;gsap.to(this.iProgress, {value: 1,duration: 1.5,onUpdate: () => {progressBar.updateDisplay();},onComplete: () => {this.playing = false;if (swap) {const temp = this.matcap.value;this.matcap.value = this.matcap2.value;this.matcap2.value = temp;this.iProgress.value = 0;}},});};this.play = play;gui.addFunction(() => play(true)).name("play");this.textures.forEach((texture, index) => {gui.addFunction(() => {if (!this.playing) {this.matcap.value = this.matcap2.value;this.matcap2.value = texture;play(false);}}).name("texture:" + (index + 1));});}clickImage(url: string) {if (!this.playing) {const t = this.textures.find((t) => t.image.src == url);if (t) {this.matcap.value = this.matcap2.value;this.matcap2.value = t;this.play && this.play(false);}}}
}