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Volume_SdfTexture_InstancedMesh_FatlineTest.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Volume SDF Surface Track _ Final</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
</head>
<style>
body {
margin: 0;
overflow: hidden;
}
.note {
position: fixed;
color: white;
}
</style>
<body>
<div class="note">
</div>
<div id="canvas"></div>
<script id="frag_Pos_GPGPU" type="x-shader/x-fragment">
uniform float time;
uniform float delta;
uniform float u_holdGPGPU;
uniform bool start;
uniform sampler3D texture3DSDF;
uniform sampler2D uFuild;
vec3 mod289(vec3 x) { return x - floor(x * (1.0 / 289.0)) * 289.0; }
vec4 mod289(vec4 x) { return x - floor(x * (1.0 / 289.0)) * 289.0; }
vec4 permute(vec4 x) { return mod289(((x*34.0)+1.0)*x); }
vec4 taylorInvSqrt(vec4 r) { return 1.79284291400159 - 0.85373472095314 * r;}
float snoise(vec3 v) {
const vec2 C = vec2(1.0/6.0, 1.0/3.0) ;
const vec4 D = vec4(0.0, 0.5, 1.0, 2.0);
vec3 i = floor(v + dot(v, C.yyy) );
vec3 x0 = v - i + dot(i, C.xxx) ;
vec3 g = step(x0.yzx, x0.xyz);
vec3 l = 1.0 - g;
vec3 i1 = min( g.xyz, l.zxy );
vec3 i2 = max( g.xyz, l.zxy );
vec3 x1 = x0 - i1 + C.xxx;
vec3 x2 = x0 - i2 + C.yyy; // 2.0*C.x = 1/3 = C.y
vec3 x3 = x0 - D.yyy; // -1.0+3.0*C.x = -0.5 = -D.y
i = mod289(i);
vec4 p = permute( permute( permute(
i.z + vec4(0.0, i1.z, i2.z, 1.0 ))
+ i.y + vec4(0.0, i1.y, i2.y, 1.0 ))
+ i.x + vec4(0.0, i1.x, i2.x, 1.0 ));
float n_ = 0.142857142857; // 1.0/7.0
vec3 ns = n_ * D.wyz - D.xzx;
vec4 j = p - 49.0 * floor(p * ns.z * ns.z); // mod(p,7*7)
vec4 x_ = floor(j * ns.z);
vec4 y_ = floor(j - 7.0 * x_ ); // mod(j,N)
vec4 x = x_ *ns.x + ns.yyyy;
vec4 y = y_ *ns.x + ns.yyyy;
vec4 h = 1.0 - abs(x) - abs(y);
vec4 b0 = vec4( x.xy, y.xy );
vec4 b1 = vec4( x.zw, y.zw );
vec4 s0 = floor(b0)*2.0 + 1.0;
vec4 s1 = floor(b1)*2.0 + 1.0;
vec4 sh = -step(h, vec4(0.0));
vec4 a0 = b0.xzyw + s0.xzyw*sh.xxyy ;
vec4 a1 = b1.xzyw + s1.xzyw*sh.zzww ;
vec3 p0 = vec3(a0.xy,h.x);
vec3 p1 = vec3(a0.zw,h.y);
vec3 p2 = vec3(a1.xy,h.z);
vec3 p3 = vec3(a1.zw,h.w);
vec4 norm = taylorInvSqrt(vec4(dot(p0,p0), dot(p1,p1), dot(p2, p2), dot(p3,p3)));
p0 *= norm.x;
p1 *= norm.y;
p2 *= norm.z;
p3 *= norm.w;
vec4 m = max(0.6 - vec4(dot(x0,x0), dot(x1,x1), dot(x2,x2), dot(x3,x3)), 0.0);
m = m * m;
return 42.0 * dot( m*m, vec4( dot(p0,x0), dot(p1,x1),
dot(p2,x2), dot(p3,x3) ) );
}
vec3 snoiseVec3( vec3 x ){
float s = snoise(vec3( x ));
float s1 = snoise(vec3( x.y - 19.1 , x.z + 33.4 , x.x + 47.2 ));
float s2 = snoise(vec3( x.z + 74.2 , x.x - 124.5 , x.y + 99.4 ));
vec3 c = vec3( s , s1 , s2 );
return c;
}
vec3 curlNoise( vec3 p ){
const float e = .1;
vec3 dx = vec3( e , 0.0 , 0.0 );
vec3 dy = vec3( 0.0 , e , 0.0 );
vec3 dz = vec3( 0.0 , 0.0 , e );
vec3 p_x0 = snoiseVec3( p - dx );
vec3 p_x1 = snoiseVec3( p + dx );
vec3 p_y0 = snoiseVec3( p - dy );
vec3 p_y1 = snoiseVec3( p + dy );
vec3 p_z0 = snoiseVec3( p - dz );
vec3 p_z1 = snoiseVec3( p + dz );
float x = p_y1.z - p_y0.z - p_z1.y + p_z0.y;
float y = p_z1.x - p_z0.x - p_x1.z + p_x0.z;
float z = p_x1.y - p_x0.y - p_y1.x + p_y0.x;
const float divisor = 1.0 / ( 2.0 * e );
return normalize( vec3( x , y , z ) * divisor );
}
float random (in vec2 _st) {
return fract(sin(dot(_st.xy,
vec2(12.9898,78.233)))*
43758.5453123);
}
mat3 rotateY(float angle) {
float c = cos(angle);
float s = sin(angle);
return mat3(c, 0.0, -s, 0.0, 1.0, 0.0, s, 0.0, c);
}
vec3 randomVec3(float randVal) {
if (randVal < 0.15) {
return vec3(-0.5);
} else if (randVal < 0.25) {
return vec3(0.5);
} else if (randVal < 0.35) {
return vec3(0.5, 0.5, -0.5);
} else if (randVal < 0.45) {
return vec3(0.5, -0.5, 0.5);
} else if (randVal < 0.55) {
return vec3(-0.5, -0.5, 0.5);
}else if (randVal < 0.65) {
return vec3(-0.5, 0.5, -0.5);
} else {
return vec3(-0.5, 0.5, 0.5);
}
}
void main() {
vec2 uv = gl_FragCoord.xy / resolution.xy;
vec4 tmpPos = texture2D( texturePosition, uv );
vec3 posSelf = tmpPos.xyz;
vec3 velSelf = texture2D( textureVelocity, uv ).xyz;
posSelf += velSelf * .5 ;
gl_FragColor = vec4( posSelf, 1. );
}
</script>
<script id="frag_Vel_GPGPU" type="x-shader/x-fragment">
uniform float time;
uniform float delta;
uniform vec2 fuildForce;
uniform vec2 mousePos;
uniform vec3 positionForShootDecal;
uniform sampler3D texture3DSDF;
uniform float u_holdGPGPU;
uniform sampler2D uFuild;
vec4 mod289(vec4 x) {
return x - floor(x * (1.0 / 289.0)) * 289.0;
}
float mod289(float x) {
return x - floor(x * (1.0 / 289.0)) * 289.0;
}
vec4 permute(vec4 x) {
return mod289(((x*34.0)+1.0)*x);
}
float permute(float x) {
return mod289(((x*34.0)+1.0)*x);
}
vec4 taylorInvSqrt(vec4 r) {
return 1.79284291400159 - 0.85373472095314 * r;
}
float taylorInvSqrt(float r) {
return 1.79284291400159 - 0.85373472095314 * r;
}
vec4 grad4(float j, vec4 ip) {
const vec4 ones = vec4(1.0, 1.0, 1.0, -1.0);
vec4 p,s;
p.xyz = floor( fract (vec3(j) * ip.xyz) * 7.0) * ip.z - 1.0;
p.w = 1.5 - dot(abs(p.xyz), ones.xyz);
s = vec4(lessThan(p, vec4(0.0)));
p.xyz = p.xyz + (s.xyz*2.0 - 1.0) * s.www;
return p;
}
#define F4 0.309016994374947451
vec4 snoise4 (vec4 v) {
const vec4 C = vec4( 0.138196601125011,0.276393202250021,0.414589803375032,-0.447213595499958);
vec4 i = floor(v + dot(v, vec4(F4)) );
vec4 x0 = v - i + dot(i, C.xxxx);
vec4 i0;
vec3 isX = step( x0.yzw, x0.xxx );
vec3 isYZ = step( x0.zww, x0.yyz );
i0.x = isX.x + isX.y + isX.z;
i0.yzw = 1.0 - isX;
i0.y += isYZ.x + isYZ.y;
i0.zw += 1.0 - isYZ.xy;
i0.z += isYZ.z;
i0.w += 1.0 - isYZ.z;
vec4 i3 = clamp( i0, 0.0, 1.0 );
vec4 i2 = clamp( i0-1.0, 0.0, 1.0 );
vec4 i1 = clamp( i0-2.0, 0.0, 1.0 );
vec4 x1 = x0 - i1 + C.xxxx;
vec4 x2 = x0 - i2 + C.yyyy;
vec4 x3 = x0 - i3 + C.zzzz;
vec4 x4 = x0 + C.wwww;
i = mod289(i);
float j0 = permute( permute( permute( permute(i.w) + i.z) + i.y) + i.x);
vec4 j1 = permute( permute( permute( permute (
i.w + vec4(i1.w, i2.w, i3.w, 1.0 ))
+ i.z + vec4(i1.z, i2.z, i3.z, 1.0 ))
+ i.y + vec4(i1.y, i2.y, i3.y, 1.0 ))
+ i.x + vec4(i1.x, i2.x, i3.x, 1.0 ));
vec4 ip = vec4(1.0/294.0, 1.0/49.0, 1.0/7.0, 0.0) ;
vec4 p0 = grad4(j0, ip);
vec4 p1 = grad4(j1.x, ip);
vec4 p2 = grad4(j1.y, ip);
vec4 p3 = grad4(j1.z, ip);
vec4 p4 = grad4(j1.w, ip);
vec4 norm = taylorInvSqrt(vec4(dot(p0,p0), dot(p1,p1), dot(p2, p2), dot(p3,p3)));
p0 *= norm.x;
p1 *= norm.y;
p2 *= norm.z;
p3 *= norm.w;
p4 *= taylorInvSqrt(dot(p4,p4));
vec3 values0 = vec3(dot(p0, x0), dot(p1, x1), dot(p2, x2)); //value of contributions from each corner at point
vec2 values1 = vec2(dot(p3, x3), dot(p4, x4));
vec3 m0 = max(0.5 - vec3(dot(x0,x0), dot(x1,x1), dot(x2,x2)), 0.0); //(0.5 - x^2) where x is the distance
vec2 m1 = max(0.5 - vec2(dot(x3,x3), dot(x4,x4)), 0.0);
vec3 temp0 = -6.0 * m0 * m0 * values0;
vec2 temp1 = -6.0 * m1 * m1 * values1;
vec3 mmm0 = m0 * m0 * m0;
vec2 mmm1 = m1 * m1 * m1;
float dx = temp0[0] * x0.x + temp0[1] * x1.x + temp0[2] * x2.x + temp1[0] * x3.x + temp1[1] * x4.x + mmm0[0] * p0.x + mmm0[1] * p1.x + mmm0[2] * p2.x + mmm1[0] * p3.x + mmm1[1] * p4.x;
float dy = temp0[0] * x0.y + temp0[1] * x1.y + temp0[2] * x2.y + temp1[0] * x3.y + temp1[1] * x4.y + mmm0[0] * p0.y + mmm0[1] * p1.y + mmm0[2] * p2.y + mmm1[0] * p3.y + mmm1[1] * p4.y;
float dz = temp0[0] * x0.z + temp0[1] * x1.z + temp0[2] * x2.z + temp1[0] * x3.z + temp1[1] * x4.z + mmm0[0] * p0.z + mmm0[1] * p1.z + mmm0[2] * p2.z + mmm1[0] * p3.z + mmm1[1] * p4.z;
float dw = temp0[0] * x0.w + temp0[1] * x1.w + temp0[2] * x2.w + temp1[0] * x3.w + temp1[1] * x4.w + mmm0[0] * p0.w + mmm0[1] * p1.w + mmm0[2] * p2.w + mmm1[0] * p3.w + mmm1[1] * p4.w;
return vec4(dx, dy, dz, dw) * 49.0;
}
vec3 curl( in vec3 p, in float noiseTime, in float persistence ) {
vec4 xNoisePotentialDerivatives = vec4(0.0);
vec4 yNoisePotentialDerivatives = vec4(0.0);
vec4 zNoisePotentialDerivatives = vec4(0.0);
for (int i = 0; i < 3; ++i) {
float twoPowI = pow(2.0, float(i));
float scale = 0.5 * twoPowI * pow(persistence, float(i));
xNoisePotentialDerivatives += snoise4(vec4(p * twoPowI, noiseTime)) * scale;
yNoisePotentialDerivatives += snoise4(vec4((p + vec3(123.4, 129845.6, -1239.1)) * twoPowI, noiseTime)) * scale;
zNoisePotentialDerivatives += snoise4(vec4((p + vec3(-9519.0, 9051.0, -123.0)) * twoPowI, noiseTime)) * scale;
}
return vec3(
zNoisePotentialDerivatives[1] - yNoisePotentialDerivatives[2],
xNoisePotentialDerivatives[2] - zNoisePotentialDerivatives[0],
yNoisePotentialDerivatives[0] - xNoisePotentialDerivatives[1]
);
}
float random (in vec2 _st) {
return fract(sin(dot(_st.xy,
vec2(12.9898,78.233)))*
43758.5453123);
}
vec3 SimpleSim(in vec2 cl) {
float len = length(cl.xy);
vec3 colorSim = vec3(len);
float alpha = smoothstep(0.0, 0.5, len);
vec3 fc = mix(vec3(0.),colorSim,alpha);
float luminance = dot(fc, vec3(0.299, 0.587, 0.114));
// Ngưỡng để quyết định xem pixel có sáng hay không
float threshold = 0.1;
// Nếu pixel sáng, làm tối nó
if (luminance > threshold) {
fc *= 0.0001; // giảm cường độ của màu (làm tối)
}
return fc;
}
void main() {
vec2 uv = gl_FragCoord.xy / resolution.xy;
vec3 posSelf = texture2D( texturePosition, uv ).xyz;
vec3 velSelf = texture2D( textureVelocity, uv ).xyz;
//velSelf.xyz += curl((posSelf.xyz+ velSelf.xyz) * 2., time*.5, 0.02) * .0008;
posSelf += velSelf;
vec3 posFuild = texture2D(uFuild,posSelf.xy + .5).xyz;
posFuild = SimpleSim(posFuild.xy);
vec4 sdf3d = texture(texture3DSDF, posSelf + .5);
vec4 sdf3dFormat = sdf3d * 2. - 1.;
vec2 dirMouse = normalize(vec2(mousePos.x, mousePos.y));
float distanceShoot = distance(positionForShootDecal,posSelf);
if(sdf3dFormat.w < 1.2) {
vec3 disSDF = normalize(sdf3dFormat.xyz + posSelf) * (-sdf3dFormat.w * u_holdGPGPU);
vec3 targetSDF = disSDF * .3;
vec3 targetShoot = vec3(0.);
if(distanceShoot < .1) {
}
velSelf += mix(disSDF * .5,posFuild * atan(mousePos.x,mousePos.y) * 2.7 ,min(.5,fuildForce.x) * 0.) ;
}else{
}
gl_FragColor = vec4( velSelf,1.);
}
</script>
<script type="importmap">
{
"imports": {
"three": "./three.module.js",
"three/addons/": "./jsm/",
"three/addonsmore/": "https://unpkg.com/[email protected]/examples/jsm/"
}
}
</script>
<script type="module">
import Stats from 'three/addons/stats.module.js';
import * as THREE from 'three';
import { OrbitControls } from 'three/addons/OrbitControls.js';
import { OBJLoader } from 'three/addons/OBJLoader.js';
import { calcSizeFitCamPerspective } from './utils/calcSizeFitCamPerspective.js'
import { GPUComputationRenderer } from 'three/addons/GPUComputationRenderer.js';
import { GUI } from 'three/addons/lil-gui.module.min.js';
import Renderer from "./fuild/modules_rewrite/Renderer.js";
import Simulation from "./fuild/modules_rewrite/Simulation.js";
import Mouse from "./fuild/modules_rewrite/Mouse.js";
import { LineMaterial } from 'three/addonsmore/lines/LineMaterial.js';
import { LineSegments2 } from 'three/addonsmore/lines/LineSegments2.js';
import { LineSegmentsGeometry } from 'three/addonsmore/lines/LineSegmentsGeometry.js';
let renderer, scene, camera, stats, raycaster, mouseHelper, meshToRay, lineRaySample, currentTime;
let mesh, texturedd, dataTexture3D, dataTexture3DSample, materialCube, textureData3dOut, matModel
let meshLayer, matPoint, matInstanced
let delta, time, lastTime
let materialChunkModel
let gpuCompute
let widthTexture = 128
let velocityVariable, positionVariable, extraVariable
let positionUniforms, velocityUniforms, extraUniforms
let targetMonitor, monitorPos, monitorVel, sceneMonitor, cameraMonitor
let valueWH = [0, 0]
let mouseFroceCurr = new THREE.Vector2(0, 0), mouseFrocePrev = new THREE.Vector2(0, 0)
let mousePos = new THREE.Vector2()
let cubeSample, sphereSample
const textureImg = new THREE.TextureLoader().load('/textures/cat.jpg')
const textureSDF = new THREE.TextureLoader().load('/models/eisbar/sdf.png')
let textureSDFData, texture2DView, matmat
const width = window.innerWidth;
const height = window.innerHeight;
const ratioView = window.innerWidth / window.innerHeight
const pixelBuffer = new Float32Array(widthTexture * widthTexture * 4);
Renderer.init();
const glContaxt = Renderer.renderer.getContext();
Mouse.init();
const simulation = new Simulation({
options: {
iterations_poisson: 1,
iterations_viscous: 1,
mouse_force: 10,
resolution: 0.4,
cursor_size: 50,
viscous: 30,
isBounce: false,
dt: 0.09,
isViscous: false,
BFECC: false
}
});
const countInstancedMesh = 200
let savePtsFatline
const instCount = countInstancedMesh;
const verticesPerInstance = 72;
let dataTextureFatline, meshCheckMeshTrail
let ListcurvesOfFatLine = [];
const sizeTextureFatLine = 2000
class InstDataTexture extends THREE.DataTexture {
constructor(verticesPerInstance, instanceCount) {
const totalAmountPerInstance = verticesPerInstance + 1; // vertices + color (vec4 * 1)
const instancePerRow = Math.floor(sizeTextureFatLine / totalAmountPerInstance);
const rows = Math.ceil(instanceCount / instancePerRow);
const w = totalAmountPerInstance * instancePerRow;
const h = rows;
const totalData = new Float32Array(w * h * 4).fill(1);
super(totalData, w, h, THREE.RGBAFormat, THREE.FloatType);
this.needsUpdate = true;
this.instanceCount = instanceCount;
this.totalAmountPerInstance = totalAmountPerInstance;
this.instancePerRow = instancePerRow;
this.rows = rows;
this.uniforms = {
totalAmountPerInstance: { value: totalAmountPerInstance },
instancePerRow: { value: instancePerRow },
width: { value: w },
height: { value: h }
};
}
setDataAt(idx, data) {
// data - array of Vector3
if (idx >= this.instanceCount) {
return;
}
let sourceData = this.source.data.data;
let startIdx = this.totalAmountPerInstance * idx;
data.forEach((p, pIdx) => {
let currIdx = startIdx + pIdx;
sourceData[currIdx * 4 + 0] = p.x;
sourceData[currIdx * 4 + 1] = p.y;
sourceData[currIdx * 4 + 2] = p.z;
sourceData[currIdx * 4 + 3] = 1;
});
}
setColorAt(idx, color, alpha = 1) {
let sourceData = this.source.data.data;
let startIdx = this.totalAmountPerInstance * (idx + 1) - 1;
sourceData[startIdx * 4 + 0] = color.r;
sourceData[startIdx * 4 + 1] = color.g;
sourceData[startIdx * 4 + 2] = color.b;
// sourceData[startIdx * 4 + 0] = 0;
// sourceData[startIdx * 4 + 1] = 0;
// sourceData[startIdx * 4 + 2] = 0;
sourceData[startIdx * 4 + 3] = alpha;
}
}
initMain();
function initComputeRenderer(renderer, data3d) {
function fillPosTexture(texture) {
const arrT = texture.image.data;
for (let k = 0, kl = arrT.length; k < kl; k += 4) {
const x = Math.random() * 2 - 1;
const y = Math.random() * 2 - 1;
const z = Math.random() * 2 - 1;
let vp = new THREE.Vector3(x, y, z)
vp.multiplyScalar(.5)
arrT[k + 0] = vp.x
arrT[k + 1] = vp.y
arrT[k + 2] = vp.z
arrT[k + 3] = 1
}
}
function fillVelTexture(texture) {
const arrT = texture.image.data;
for (let k = 0, kl = arrT.length; k < kl; k += 4) {
const x = Math.random() * 2 - 1;
const y = Math.random() * 2 - 1;
const z = Math.random() * 2 - 1;
let vv = new THREE.Vector3(x, y, z)
vv.multiplyScalar(.005)
arrT[k + 0] = vv.x
arrT[k + 1] = vv.y
arrT[k + 2] = vv.z
arrT[k + 3] = 1
}
}
gpuCompute = new GPUComputationRenderer(widthTexture, widthTexture, renderer);
const dtPosition = gpuCompute.createTexture();
const dtVelocity = gpuCompute.createTexture();
const dtExtra = gpuCompute.createTexture();
fillPosTexture(dtPosition);
fillVelTexture(dtVelocity);
velocityVariable = gpuCompute.addVariable('textureVelocity', document.getElementById('frag_Vel_GPGPU').textContent, dtVelocity);
positionVariable = gpuCompute.addVariable('texturePosition', document.getElementById('frag_Pos_GPGPU').textContent, dtPosition);
velocityVariable.wrapS = THREE.RepeatWrapping;
velocityVariable.wrapT = THREE.RepeatWrapping;
positionVariable.wrapS = THREE.RepeatWrapping;
positionVariable.wrapT = THREE.RepeatWrapping;
gpuCompute.setVariableDependencies(velocityVariable, [positionVariable, velocityVariable]);
gpuCompute.setVariableDependencies(positionVariable, [positionVariable, velocityVariable]);
positionUniforms = positionVariable.material.uniforms;
velocityUniforms = velocityVariable.material.uniforms;
positionUniforms['time'] = { value: 0.0 };
positionUniforms['delta'] = { value: 0.0 };
velocityUniforms['time'] = { value: 0.0 };
velocityUniforms['delta'] = { value: 0.0 };
positionUniforms['start'] = { value: false };
positionUniforms['u_holdGPGPU'] = { value: 0.5 };
positionUniforms['texture3DSDF'] = { value: data3d };
velocityUniforms['texture3DSDF'] = { value: data3d };
velocityUniforms['u_holdGPGPU'] = { value: 0.5 };
velocityUniforms['uFuild'] = { value: simulation.fbos.vel_0.texture };
positionUniforms['uFuild'] = { value: simulation.fbos.vel_0.texture };
velocityUniforms['fuildForce'] = { value: new THREE.Vector2(0, 0) };
positionUniforms['fuildForce'] = { value: new THREE.Vector2(0, 0) };
velocityUniforms['mousePos'] = { value: new THREE.Vector2(0, 0) };
positionUniforms['mousePos'] = { value: new THREE.Vector2(0, 0) };
velocityUniforms['positionForShootDecal'] = { value: new THREE.Vector3(0, 0, 0) };
positionUniforms['positionForShootDecal'] = { value: new THREE.Vector3(0, 0, 0) };
console.log(positionUniforms['texture3DSDF'])
const error = gpuCompute.init();
if (error !== null) {
console.error(error);
}
}
function initMain() {
scene = new THREE.Scene();
scene.background = new THREE.Color(0x525453)
camera = new THREE.PerspectiveCamera(60, window.innerWidth / window.innerHeight, 0.001, 10000);
camera.position.set(0, 0, 3.5)
const controls = new OrbitControls(camera, Renderer.renderer.domElement);
// controls.enableZoom = false
const axesHelper = new THREE.AxesHelper(5);
//scene.add(axesHelper);
const light = new THREE.AmbientLight(0x404040); // soft white light
scene.add(light);
const directionalLight = new THREE.DirectionalLight(0xffffff, 1.5);
scene.add(directionalLight);
stats = new Stats();
document.body.appendChild(stats.dom);
initTexture()
initMonitor()
initModel()
initMeshTrail()
window.addEventListener('resize', onWindowResize);
sphereSample = new THREE.Mesh(
new THREE.SphereGeometry(.01, 16, 16),
new THREE.MeshBasicMaterial({ color: 'blue' })
)
scene.add(sphereSample)
}
function getTension(phase) {
return (Math.sin(phase * Math.PI * 2) * 0.5 + 0.5) * 2;
}
function initFatLine() {
let curve = new THREE.CatmullRomCurve3(
new Array(5).fill().map((p) => {
return new THREE.Vector3();
}), false, "catmullrom", 2
);
let color = new THREE.Color();
for (let i = 0; i < instCount; i++) {
curve.points.forEach((p) => {
// console.log(p)
// p.random().subScalar(0.5).multiplyScalar(1);
});
let crv = curve.clone();
crv.userData = {
phase: (i / instCount)
}
crv.tension = getTension(crv.userData.phase);
crv.updateArcLengths();
let pts = crv.getPoints(verticesPerInstance - 1);
ListcurvesOfFatLine.push(pts);
savePtsFatline = pts
dataTextureFatline.setDataAt(i, pts);
dataTextureFatline.setColorAt(
i,
color.setHSL(i / instCount, 1, 0.15)
);
}
dataTextureFatline.needsUpdate = true;
let dt = { value: dataTextureFatline };
let flg = new LineSegmentsGeometry();
flg.instanceCount = instCount * (verticesPerInstance + 1);
let flm = new LineMaterial({
linewidth: 0.015,
worldUnits: true,
vertexColors: true,
// wireframe: true,
transparent:true,
//alphaToCoverage: true,
onBeforeCompile: shader => {
shader.uniforms.data = dt;
shader.uniforms.totalAmountPerInstance = dataTextureFatline.uniforms.totalAmountPerInstance;
shader.uniforms.instancePerRow = dataTextureFatline.uniforms.instancePerRow;
shader.vertexShader = `
uniform sampler2D data;
uniform float totalAmountPerInstance;
uniform float instancePerRow;
${shader.vertexShader}
`.replace(
`#ifdef USE_COLOR
vColor.xyz = ( position.y < 0.5 ) ? instanceColorStart : instanceColorEnd;
#endif`,
`
ivec2 tSize = textureSize(data, 0);
int vertID = int(mod(float(gl_InstanceID), totalAmountPerInstance - 2.));
int instID = int(floor(float(gl_InstanceID) / totalAmountPerInstance));
int fetchY = tSize.y - 1 - int(instID / int(instancePerRow));
int fetchX = int(mod(float(instID), instancePerRow) * totalAmountPerInstance);
#ifdef USE_COLOR
vColor.xyz = vec3(texelFetch(data, ivec2(fetchX + int(totalAmountPerInstance) - 1, fetchY), 0));
#endif`
)
.replace(
`// camera space
vec4 start = modelViewMatrix * vec4( instanceStart, 1.0 );
vec4 end = modelViewMatrix * vec4( instanceEnd, 1.0 );`,
`// camera space
vec4 instStart = texelFetch(data, ivec2(fetchX + vertID, fetchY), 0);
vec4 instEnd = texelFetch(data, ivec2(fetchX + vertID + 1, fetchY), 0);
vec4 start = modelViewMatrix * instStart;
vec4 end = modelViewMatrix * instEnd;`
);
console.log(shader.fragmentShader);
}
});
let fl = new LineSegments2(flg, flm);
scene.add(fl);
}
function initMeshTrail() {
meshCheckMeshTrail = new THREE.Mesh(
new THREE.PlaneGeometry(.5, .5),
new THREE.MeshBasicMaterial({ map: null })
)
scene.add(meshCheckMeshTrail)
dataTextureFatline = new InstDataTexture(verticesPerInstance, instCount);
initFatLine()
}
function updateMeshTrail(dataGpu) {
if (!dataGpu || dataGpu.length < 3) return; // Đảm bảo có dữ liệu
for (let i = 0; i < ListcurvesOfFatLine.length; i++) {
const index = i * 4; // Cập nhật chỉ số cho dataGpu
const newVector = new THREE.Vector3(dataGpu[index], dataGpu[index + 1], dataGpu[index + 2]);
ListcurvesOfFatLine[i].unshift(newVector.clone().multiplyScalar(5.));
ListcurvesOfFatLine[i].pop()
dataTextureFatline.setDataAt(i, ListcurvesOfFatLine[i]); // Kiểm tra để đảm bảo setDataAt làm việc
}
dataTextureFatline.needsUpdate = true;
}
function initMonitor() {
targetMonitor = new THREE.WebGLRenderTarget(widthTexture, widthTexture, {
minFilter: THREE.LinearFilter,
magFilter: THREE.LinearFilter,
format: THREE.RGBAFormat,
type: THREE.FloatType,
});
sceneMonitor = new THREE.Scene();
cameraMonitor = new THREE.OrthographicCamera(- 2, 2, 2, -2, 0, 1);
monitorPos = new THREE.Mesh(
new THREE.PlaneGeometry(4, 4),
new THREE.ShaderMaterial({
vertexShader: `
varying vec2 vUv;
void main() {
vUv = uv;
gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);
}
`,
fragmentShader: `
varying vec2 vUv;
uniform sampler2D tex;
void main() {
vec4 mapcolor = texture2D(tex, vUv);
vec3 rls = vec3(mapcolor.rgb) ;
gl_FragColor = vec4(rls,1.);
}
`,
uniforms: {
tex: { value: null }
},
})
)
sceneMonitor.add(monitorPos)
}
function initInstancedMesh(data3d) {
const geometry = new THREE.BoxGeometry(0.005, 0.02, 0.005);
// Tạo mảng lưu trữ vị trí các điểm
const positions = new Float32Array(countInstancedMesh * 3);
const uvs = new Float32Array(countInstancedMesh * 2); // Mảng UVs
const materialChunk = new THREE.MeshPhongMaterial({
color: 0xc5461b,
//emissive:0x3a2b82,
specular: 0x2c2a2a,
shininess: 100,
});
materialChunk.onBeforeCompile = (shader) => {
shader.uniforms.posGpu = { value: null };
shader.uniforms.velGpu = { value: null };
shader.uniforms.tSize = { value: new THREE.Vector2(widthTexture, widthTexture) };
// Sửa đổi vertex shader
shader.vertexShader = `
attribute vec3 offset;
varying vec2 vUv;
uniform vec2 tSize;
uniform sampler2D posGpu;
uniform sampler2D velGpu;
mat4 rotationMatrix(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);
}
vec3 rotate(vec3 v, vec3 axis, float angle) {
mat4 m = rotationMatrix(axis, angle);
return (m * vec4(v, 1.0)).xyz;
}
#define axisX vec3(0.0, 1.0, 0.0)
${shader.vertexShader}
`.replace(
`#include <fog_vertex>`,
`#include <fog_vertex>
float id = float(gl_InstanceID);
vec2 uvT = vec2(
mod(id, tSize.x) / tSize.x, // Tính chỉ số cột
floor(id / tSize.x) / tSize.y // Tính chỉ số hàng
);
vec3 posOfGpu = texture2D(posGpu, uvT).xyz;
vec3 velOfGpu = texture2D(velGpu, uvT).xyz;
vec3 pos = position * min(.8,abs(offset.x));;
vec3 dirC = normalize(velOfGpu);
vec3 axis = cross(dirC, vec3(0.0, 1.0, 0.0));
float angle = acos(dot(dirC, vec3(0.0, 1.0, 0.0)));
pos = rotate(pos, axis, angle);
pos += posOfGpu;
gl_Position = projectionMatrix * modelViewMatrix * vec4(pos * 5., 1.0);
vUv = uv; // Truyền UV đến fragment shader
`);
matInstanced = shader;
};
const offsets = new Float32Array(countInstancedMesh * 3);
for (let i = 0; i < countInstancedMesh; i++) {
offsets[i * 3 + 0] = Math.random() + .8; // X
offsets[i * 3 + 1] = Math.random(); // Y
offsets[i * 3 + 2] = Math.random() + .3; // Z
}
geometry.setAttribute('offset', new THREE.InstancedBufferAttribute(offsets, 3));
const cInstancedMesh = new THREE.InstancedMesh(geometry, materialChunk, countInstancedMesh);
const colors = [];
for (let i = 0; i < countInstancedMesh; i++) {
// Tạo ma trận transform cho mỗi instance
const matrix = new THREE.Matrix4();
// Tạo vị trí ngẫu nhiên trong phạm vi từ -50 đến 50
const position = new THREE.Vector3(
(Math.random() - 0.5) * 2,
(Math.random() - 0.5) * 2,
(Math.random() - 0.5) * 2
);
// Tạo tỷ lệ ngẫu nhiên từ 0.5 đến 1.5
const scale = new THREE.Vector3(
Math.random() + 0.5,
Math.random() + 0.5,
Math.random() + 0.5
);
// Tạo rotation ngẫu nhiên
const rotation = new THREE.Euler(
Math.random() * 2 * Math.PI,
Math.random() * 2 * Math.PI,
Math.random() * 2 * Math.PI
);
// Áp dụng transform vào ma trận
matrix.makeRotationFromEuler(rotation);
matrix.setPosition(position);
matrix.scale(scale);
// Gán ma trận cho instance thứ i
cInstancedMesh.setMatrixAt(i, matrix);
// Tạo màu ngẫu nhiên cho mỗi instance
const color = new THREE.Color(Math.random(), Math.random(), Math.random());
colors.push(color.r, color.g, color.b);
}
scene.add(cInstancedMesh);
}
function initTexture() {
const img = new Image();
img.src = '/models/eisbar/sdf.png';
img.onload = () => {
const canvas = document.createElement('canvas');
const context = canvas.getContext('2d');
canvas.width = img.width;
canvas.height = img.height;
context.drawImage(img, 0, 0);
const imageData = context.getImageData(0, 0, img.width, img.height);
textureSDFData = imageData.data;
const width3D = 128;
const height3D = 128;
const depth3D = 128; // Tổng số ô (16 * 8 = 128)
// Giả sử bạn đã có dữ liệu hình ảnh dạng RGBA (với 4 kênh màu)
const imageWidth = 16 * width3D; // Chiều rộng của hình ảnh lớn
const imageHeight = 8 * height3D; // Chiều cao của hình ảnh lớn
const textureData3dOut = new Float32Array(4 * width3D * height3D * depth3D);
extractTexture3D(textureSDFData)
// imageData chứa dữ liệu RGBA của hình ảnh lớn (16*8 ô)
function extractTexture3D(imageData) {
for (let slice = 0; slice < depth3D; slice++) {
// Tính toán vị trí của ô thứ `slice` trong hình ảnh lớn
const tileX = slice % 16; // Chỉ số ô trên trục X
const tileY = Math.floor(slice / 16); // Chỉ số ô trên trục Y
// Tọa độ pixel bắt đầu của ô trong hình ảnh lớn
const startX = tileX * width3D;
const startY = tileY * height3D;
// Duyệt qua từng pixel trong ô
for (let y = 0; y < height3D; y++) {
for (let x = 0; x < width3D; x++) {
// Chỉ số pixel trong hình ảnh lớn