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app_gpu_water.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Three.js MMDLoader app GPU Water</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
font-family: Monospace;
background-color: #fff;
color: #000;
margin: 0px;
overflow: hidden;
}
#info {
color: #000;
position: absolute;
top: 10px;
width: 100%;
text-align: center;
display:block;
}
#info a, .button { color: #f00; font-weight: bold; text-decoration: underline; cursor: pointer }
</style>
</head>
<body>
<script id="vertexShaderWater" type="x-shader/x-vertex">
varying vec2 vUv;
varying vec3 vNormal;
varying vec3 vPosition;
varying mat4 vProjectionMatrix;
varying mat4 vModelViewMatrix;
uniform float time;
const int maxCircleWaveNum = <maxCircleWaveNum>;
uniform int circleWaveNum;
uniform float circleWaveTriggerTimes[ maxCircleWaveNum ];
uniform vec2 circleWaveCenters[ maxCircleWaveNum ];
const int maxDirectionWaveNum = <maxDirectionWaveNum>;
uniform int directionWaveNum;
uniform vec2 directionWaveVectors[ maxDirectionWaveNum ];
uniform sampler2D tWaterNormalMap;
const float circleWaveLength = 0.05;
const float circleWaveAmplitude = 0.05;
const float circleWaveK = 2.0;
const float circleWaveSpeed = 0.4;
const float directionWaveLength = 0.1;
const float directionWaveAmplitude = 0.1;
const float directionWaveK = 1.0;
const float directionWaveSpeed = 0.3;
vec2 getPosition() {
return uv * 2.0 - 1.0;
}
float getTheta( vec2 direction ) {
return dot( direction, getPosition() );
}
float wave(
vec2 direction,
float waveLength,
float amplitude,
float k,
float speed,
float t
) {
float frequency = 2.0 / waveLength;
float phi = speed * frequency;
float theta = getTheta( direction );
return 2.0 * amplitude * pow( ( sin( theta * frequency + t * phi ) + 1.0 ) / 2.0, k );
}
vec2 vwave(
vec2 direction,
float waveLength,
float amplitude,
float k,
float speed,
float t
) {
float frequency = 2.0 / waveLength;
float phi = speed * frequency;
float theta = getTheta( direction );
return k * frequency * amplitude * pow( ( sin( theta * frequency + time * phi ) + 1.0 ) / 2.0, k - 1.0 ) * cos( theta * frequency + t * phi ) * direction;
}
float getPastTime( float triggerTime ) {
return time - triggerTime;
}
vec2 getCircleDirection( vec2 center ) {
return -normalize( getPosition() - center );
}
float getCircleDistance( vec2 center ) {
return length( getPosition() - center );
}
bool checkIfCircleWave( vec2 center, float triggerTime ) {
//return true;
float distance = getCircleDistance( center );
float pastTime = getPastTime( triggerTime );
if ( ( distance > ( pastTime + circleWaveLength * 10.0 ) * circleWaveSpeed ) ||
( distance < ( pastTime - circleWaveLength * 10.0 ) * circleWaveSpeed ) ) return false;
return true;
}
float getAttenuation( float triggerTime ) {
float pastTime = getPastTime( triggerTime );
return max( pastTime * 4.0, 1.0 );
}
float circleWave( vec2 center, float triggerTime ) {
if ( ! checkIfCircleWave( center, triggerTime ) ) return 0.0;
return wave(
getCircleDirection( center ),
circleWaveLength,
circleWaveAmplitude,
circleWaveK,
circleWaveSpeed,
getPastTime( triggerTime )
) / getAttenuation( triggerTime );
}
vec2 vCircleWave( vec2 center, float triggerTime ) {
if ( ! checkIfCircleWave( center, triggerTime ) ) return vec2( 0.0 );
return vwave(
getCircleDirection( center ),
circleWaveLength,
circleWaveAmplitude,
circleWaveK,
circleWaveSpeed,
getPastTime( triggerTime )
) / getAttenuation( triggerTime );
}
float directionWave( vec2 direction ) {
return wave(
direction,
directionWaveLength,
directionWaveAmplitude,
directionWaveK,
directionWaveSpeed,
time
);
}
vec2 vDirectionWave( vec2 direction ) {
return vwave(
direction,
directionWaveLength,
directionWaveAmplitude,
directionWaveK,
directionWaveSpeed,
time
);
}
void main() {
float offset = 0.0;
vec2 vative = vec2( 0.0 );
for ( int i = 0; i < maxCircleWaveNum; i ++ ) {
if ( i >= circleWaveNum ) break;
vec2 trigger = vec2( circleWaveCenters[ i ] );
offset += circleWave( circleWaveCenters[ i ], circleWaveTriggerTimes[ i ] );
vative += vCircleWave( circleWaveCenters[ i ], circleWaveTriggerTimes[ i ] );
}
for ( int i = 0; i < maxDirectionWaveNum; i ++ ) {
if ( i >= directionWaveNum ) break;
offset += directionWave( directionWaveVectors[ i ] );
vative += vDirectionWave( directionWaveVectors[ i ] );
}
vec3 newPosition = vec3( position.xy, position.z + offset );
gl_Position = projectionMatrix * modelViewMatrix * vec4( newPosition, 1.0 );
vec3 newNormal = normalize(
( normal + vec3( -vative.x, -vative.y, 1.0 ) * 0.1 ) *
texture2D( tWaterNormalMap, uv ).xyz
);
vUv = uv;
vNormal = normalize( normalMatrix * newNormal );
vPosition = newPosition;
vProjectionMatrix = projectionMatrix;
vModelViewMatrix = modelViewMatrix;
}
</script>
<script id="fragmentShaderWater" type="x-shader/x-fragment">
varying vec2 vUv;
varying vec3 vNormal;
varying vec3 vPosition;
varying mat4 vProjectionMatrix;
varying mat4 vModelViewMatrix;
uniform vec2 size;
uniform sampler2D tDiffuse;
uniform sampler2D tWaterMap;
void main() {
vec3 lightPos = vec3( 50.0, 50.0, 50.0 );
vec3 lightVec = normalize( -lightPos );
vec3 eyeVec = normalize( -cameraPosition );
vec3 waveNormal = normalize( vNormal );
vec3 mirrorNormal = normalize( vec3( 0.0, 0.0, 1.0 ) );
vec3 flatNormal = waveNormal - dot( waveNormal, mirrorNormal ) * mirrorNormal;
vec3 eyeNormal = ( vProjectionMatrix * vModelViewMatrix * vec4( flatNormal, 1.0 ) ).xyz;
vec2 coordOffset = normalize( eyeNormal.xy ) * length( flatNormal ) * 0.01;
vec2 coord = gl_FragCoord.xy / size;
vec4 textureColor = texture2D( tDiffuse, coord + coordOffset ) + texture2D( tWaterMap, vUv );
vec3 ambientColor = vec3( 0.0, 0.4, 0.8 );
vec3 diffuseColor = vec3( 0.0, 0.4, 0.8 );
vec3 specularColor = vec3( 0.2, 0.2, 0.2 );
vec3 surfaceToLight = normalize( lightPos - vPosition );
vec3 surfaceToCamera = normalize( cameraPosition - vPosition );
float shininess = 20.0;
vec3 ambient = ambientColor;
vec3 diffuse = diffuseColor * max( dot( vNormal, lightVec ), 0.0 );
vec3 specular = specularColor * pow( max( 0.0, dot( surfaceToCamera, reflect( -surfaceToLight, vNormal ) ) ), shininess );
vec4 color = textureColor * vec4( ambient + diffuse + specular, 0.3 );
gl_FragColor = color;
}
</script>
<script id="vertexShaderSplash" type="x-shader/x-vertex">
attribute float inputTime;
attribute vec3 translate;
attribute vec3 vector;
uniform float time;
varying vec3 vOffset;
const float g = 9.8 * 4.0;
void main() {
float t = time - inputTime;
vec3 offset = vec3( 0.0 );
offset.xz = vector.xz * ( t + 0.4 );
offset.y = vector.y * t - 0.5 * g * t * t;
gl_Position = projectionMatrix * modelViewMatrix * vec4( position + translate + offset, 1.0 );
vOffset = offset;
}
</script>
<script id="fragmentShaderSplash" type="x-shader/x-fragment">
varying vec3 vOffset;
void main() {
if ( vOffset.y <= 0.0 ) discard;
gl_FragColor = vec4( 0.8, 1.0, 1.0, 0.3 );
}
</script>
<div id="info">
<a href="http://threejs.org" target="_blank">three.js</a> - MMDLoader app GPU Water<br />
<a href="https://github.com/takahirox/MMDLoader-app#readme" target="_blank">MMD Assets license</a><br />
Copyright
<a href="http://threejs.org" target="_blank">three.js</a>
<a href="http://www.geocities.jp/higuchuu4/index_e.htm" target="_blank">Model Data</a>
<a href="http://www.nicovideo.jp/watch/sm13147122" target="_blank">Dance Data</a>
</div>
<script src="https://cdn.rawgit.com/mrdoob/three.js/r87/build/three.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/r87/examples/js/libs/mmdparser.min.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/r87/examples/js/libs/ammo.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/r87/examples/js/loaders/TGALoader.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/r87/examples/js/loaders/MMDLoader.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/r87/examples/js/effects/OutlineEffect.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/r87/examples/js/animation/CCDIKSolver.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/r87/examples/js/animation/MMDPhysics.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/r87/examples/js/controls/OrbitControls.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/r87/examples/js/Detector.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/r87/examples/js/libs/dat.gui.min.js"></script>
<script>
var container;
var scene;
var camera;
var renderer;
var effect;
var mesh;
var water;
var splash;
var renderTarget;
var helper;
var waterSize = 64;
var waterTextureFile = 'https://cdn.rawgit.com/mrdoob/three.js/r87/examples/textures/water.jpg';
var waterNormalTextureFile = 'https://cdn.rawgit.com/mrdoob/three.js/r87/examples/textures/waternormals.jpg';
// see the license https://github.com/takahirox/MMDLoader-app#readme for these assets
var modelFile = 'https://cdn.rawgit.com/mrdoob/three.js/r87/examples/models/mmd/miku/miku_v2.pmd';
var vmdFiles = [ 'https://cdn.rawgit.com/mrdoob/three.js/r87/examples/models/mmd/vmds/wavefile_v2.vmd' ];
var splashIndex = 0;
var splashParticleSize = 0.04;
var splashMaxNum = 30;
var splashParticleNum = 400; // for each splash
var splashVector = new THREE.Vector3( 8, 10, 8 );
var directionWaveVectors = [
( new THREE.Vector2( 0.0, 0.7 ) ).normalize(),
( new THREE.Vector2( -1.0, 1.0 ) ).normalize(),
( new THREE.Vector2( -0.2, -1.0 ) ).normalize(),
( new THREE.Vector2( -1.0, -1.0 ) ).normalize(),
( new THREE.Vector2( 1.0, 0.5 ) ).normalize()
];
var directionWaveMaxNum = directionWaveVectors.length;
var waterHitCheckBoneIndices = [
82, // 左髪7
83, // 右髪7
123, // 左つま先ＩＫ先
124 // 右つま先ＩＫ先
];
var previousBonePositions = [];
for ( var i = 0, il = waterHitCheckBoneIndices.length; i < il; i ++ ) {
previousBonePositions.push( new THREE.Vector3() );
}
var reflectionCamera;
var reflectionMatrix = new THREE.Matrix4();
reflectionMatrix.set(
1, 0, 0, 0,
0, -1, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1
);
var ready = false;
var textureLoader = new THREE.TextureLoader();
var clock = new THREE.Clock();
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
// cameras
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 2000 );
camera.position.y = 20
camera.position.z = 50;
reflectionCamera = camera.clone();
var controls = new THREE.OrbitControls( camera );
// scene
scene = new THREE.Scene();
// lights
var ambient = new THREE.AmbientLight( 0x444444 );
scene.add( ambient );
var directionalLight = new THREE.DirectionalLight( 0x666666 );
directionalLight.position.set( -1, 1, 1 ).normalize();
scene.add( directionalLight );
// renderer
renderer = new THREE.WebGLRenderer( { antialias: true } );
//renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.setClearColor( new THREE.Color( 0xffffff ) );
container.appendChild( renderer.domElement );
effect = new THREE.OutlineEffect( renderer );
renderTarget = new THREE.WebGLRenderTarget( window.innerWidth, window.innerHeight );
// model
helper = new THREE.MMDHelper();
createModel();
createWater();
createSplash();
//
window.addEventListener( 'resize', onWindowResize, false );
}
function createModel() {
var onProgress = function ( xhr ) {
if ( xhr.lengthComputable ) {
var percentComplete = xhr.loaded / xhr.total * 100;
console.log( Math.round(percentComplete, 2) + '% downloaded' );
}
};
var onError = function ( xhr ) {
};
var loader = new THREE.MMDLoader();
loader.load( modelFile, vmdFiles, function ( object ) {
mesh = object;
mesh.position.y = -0.1;
helper.add( mesh );
helper.setAnimation( mesh );
helper.setPhysics( mesh );
/*
* Note: call this method after you set all animations
* including camera and audio.
*/
helper.unifyAnimationDuration( { afterglow: 2.0 } );
scene.add( mesh );
ready = true;
}, onProgress, onError );
}
function createWater() {
var circleWaveTriggerTimesArray = [];
var circleWaveCentersArray = [];
for ( var i = 0; i < splashMaxNum; i ++ ) {
circleWaveTriggerTimesArray.push( 0 );
circleWaveCentersArray.push( new THREE.Vector2() );
}
water = new THREE.Mesh(
new THREE.PlaneBufferGeometry( waterSize, waterSize, 512, 512 ),
new THREE.ShaderMaterial( {
uniforms: {
size: { value: new THREE.Vector2( window.innerWidth, window.innerHeight ) },
time: { value: 0 },
tDiffuse: { value: renderTarget.texture },
tWaterMap: { value: textureLoader.load( waterTextureFile ) },
tWaterNormalMap: { value: textureLoader.load( waterNormalTextureFile ) },
circleWaveCenters: { value: circleWaveCentersArray },
circleWaveTriggerTimes: { value: circleWaveTriggerTimesArray },
circleWaveNum: { value: 0 },
directionWaveVectors: { value: directionWaveVectors },
directionWaveNum: { value: directionWaveMaxNum }
},
vertexShader: document.getElementById( 'vertexShaderWater' ).textContent.replace( '<maxCircleWaveNum>', splashMaxNum ).replace( '<maxDirectionWaveNum>', directionWaveMaxNum ),
fragmentShader: document.getElementById( 'fragmentShaderWater' ).textContent,
transparent: true
} )
);
water.rotation.x = -90 * Math.PI / 180;
scene.add( water );
}
function createSplash() {
var count = splashMaxNum * splashParticleNum;
var geometry = new THREE.InstancedBufferGeometry();
geometry.copy( new THREE.SphereBufferGeometry( splashParticleSize ) );
var translateArray = new Float32Array( count * 3 );
var vectorArray = new Float32Array( count * 3 );
var inputTimeArray = new Float32Array( count );
for ( var i = 0; i < count; i ++ ) {
translateArray[ i * 3 + 0 ] = 0;
translateArray[ i * 3 + 1 ] = 0;
translateArray[ i * 3 + 2 ] = 0;
}
for ( var i = 0; i < count; i ++ ) {
vectorArray[ i * 3 + 0 ] = ( Math.random() - 0.5 ) * splashVector.x;
vectorArray[ i * 3 + 1 ] = ( Math.random() + 0.5 ) * splashVector.y;
vectorArray[ i * 3 + 2 ] = ( Math.random() - 0.5 ) * splashVector.z;
}
for ( var i = 0; i < count; i ++ ) {
inputTimeArray[ i ] = 0;
}
geometry.addAttribute( 'translate', new THREE.InstancedBufferAttribute( translateArray, 3, 1 ) );
geometry.addAttribute( 'vector', new THREE.InstancedBufferAttribute( vectorArray, 3, 1 ) );
geometry.addAttribute( 'inputTime', new THREE.InstancedBufferAttribute( inputTimeArray, 1, 1 ) );
var material = new THREE.ShaderMaterial( {
uniforms: {
time: { value: 0 }
},
vertexShader: document.getElementById( 'vertexShaderSplash' ).textContent,
fragmentShader: document.getElementById( 'fragmentShaderSplash' ).textContent,
depthTest: true,
depthWrite: true
} );
splash = new THREE.Mesh( geometry, material );
scene.add( splash );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
effect.setSize( window.innerWidth, window.innerHeight );
water.material.uniforms.size.value.set( window.innerWidth, window.innerHeight );
renderTarget.setSize( window.innerWidth, window.innerHeight );
}
function addRipple( x, y ) {
var uniforms = water.material.uniforms;
var currentTime = uniforms.time.value;
uniforms.circleWaveTriggerTimes.value[ splashIndex ] = currentTime;
uniforms.circleWaveCenters.value[ splashIndex ].set( x / ( waterSize * 0.5 ), -y / ( waterSize * 0.5 ) );
uniforms.circleWaveNum.value = splashMaxNum;
for ( var i = 0; i < splashParticleNum; i ++ ) {
var index = splashIndex * splashParticleNum + i;
splash.geometry.attributes.inputTime.array[ index + i ] = currentTime;
splash.geometry.attributes.translate.array[ index * 3 + 0 ] = x;
splash.geometry.attributes.translate.array[ index * 3 + 1 ] = 0;
splash.geometry.attributes.translate.array[ index * 3 + 2 ] = y;
}
splash.geometry.attributes.inputTime.needsUpdate = true;
splash.geometry.attributes.translate.needsUpdate = true;
if ( ++ splashIndex >= splashMaxNum ) splashIndex = 0;
}
function getLength( p1, p2 ) {
return Math.sqrt( Math.pow( p1.x - p2.x, 2.0 ) + Math.pow( p1.y - p2.y, 2.0 ) + Math.pow( p1.z - p2.z, 2.0 ) );
}
function checkWaterHit() {
var waterHeightThreshold = 0.15;
var moveThreshold = 0.1;
var pos = new THREE.Vector3();
for ( var i = 0, il = waterHitCheckBoneIndices.length; i < il; i ++ ) {
var boneIndex = waterHitCheckBoneIndices[ i ];
var previousPosition = previousBonePositions[ i ];
mesh.skeleton.bones[ boneIndex ].getWorldPosition( pos );
if ( ( previousPosition.y >= waterHeightThreshold && pos.y < waterHeightThreshold ) ||
( previousPosition.y < waterHeightThreshold && pos.y >= waterHeightThreshold ) ||
( pos.y < waterHeightThreshold && getLength( previousPosition, pos ) > moveThreshold ) ) {
addRipple( pos.x, pos.z );
}
previousPosition.copy( pos );
}
}
function animate() {
requestAnimationFrame( animate );
update();
render();
}
function update() {
if ( ! ready ) return;
var delta = clock.getDelta();
helper.animate( delta );
water.material.uniforms.time.value += delta;
splash.material.uniforms.time.value += delta;
checkWaterHit();
}
function render() {
if ( ready ) {
// pass 1: render reflection to renderTarget for water
camera.updateMatrixWorld( true );
reflectionCamera.matrix.copy( reflectionMatrix ).multiply( camera.matrix );
reflectionCamera.matrix.decompose( reflectionCamera.position, reflectionCamera.quaternion, reflectionCamera.scale );
mesh.visible = true;
water.visible = false;
splash.visible = false;
renderer.setFaceCulling( THREE.CullFaceFront );
effect.render( scene, reflectionCamera, renderTarget );
renderer.setFaceCulling( THREE.CullFaceBack );
// pass 2: render model
mesh.visible = true;
water.visible = false;
splash.visible = false;
effect.render( scene, camera );
// pass 3: render water and splash
mesh.visible = false;
water.visible = true;
splash.visible = true;
renderer.autoClear = false;
renderer.render( scene, camera );
// just in case restore the parameters
renderer.autoClear = true;
mesh.visible = true;
water.visible = true;
splash.visible = true;
} else {
renderer.render( scene, camera );
}
}
</script>
</body>
</html>