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moving_noise.html
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<!DOCTYPE HTML>
<html lang="en">
<head>
<title>asdf</title>
<meta charset="utf-8">
</head>
<body style="margin:0; overflow:hidden;">
<div id="container"></div>
</body>
<script src="lib/three.min.js"></script>
<script src="OrbitControls.js"></script>
<script type="x-shader/x-vertex" id="vertexShader">
//
// GLSL textureless classic 3D noise "cnoise",
// with an RSL-style periodic variant "pnoise".
// Author: Stefan Gustavson ([email protected])
// Version: 2011-10-11
//
// Many thanks to Ian McEwan of Ashima Arts for the
// ideas for permutation and gradient selection.
//
// Copyright (c) 2011 Stefan Gustavson. All rights reserved.
// Distributed under the MIT license. See LICENSE file.
// https://github.com/ashima/webgl-noise
//
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;
}
vec3 fade(vec3 t) {
return t*t*t*(t*(t*6.0-15.0)+10.0);
}
// Classic Perlin noise
float cnoise(vec3 P)
{
vec3 Pi0 = floor(P); // Integer part for indexing
vec3 Pi1 = Pi0 + vec3(1.0); // Integer part + 1
Pi0 = mod289(Pi0);
Pi1 = mod289(Pi1);
vec3 Pf0 = fract(P); // Fractional part for interpolation
vec3 Pf1 = Pf0 - vec3(1.0); // Fractional part - 1.0
vec4 ix = vec4(Pi0.x, Pi1.x, Pi0.x, Pi1.x);
vec4 iy = vec4(Pi0.yy, Pi1.yy);
vec4 iz0 = Pi0.zzzz;
vec4 iz1 = Pi1.zzzz;
vec4 ixy = permute(permute(ix) + iy);
vec4 ixy0 = permute(ixy + iz0);
vec4 ixy1 = permute(ixy + iz1);
vec4 gx0 = ixy0 * (1.0 / 7.0);
vec4 gy0 = fract(floor(gx0) * (1.0 / 7.0)) - 0.5;
gx0 = fract(gx0);
vec4 gz0 = vec4(0.5) - abs(gx0) - abs(gy0);
vec4 sz0 = step(gz0, vec4(0.0));
gx0 -= sz0 * (step(0.0, gx0) - 0.5);
gy0 -= sz0 * (step(0.0, gy0) - 0.5);
vec4 gx1 = ixy1 * (1.0 / 7.0);
vec4 gy1 = fract(floor(gx1) * (1.0 / 7.0)) - 0.5;
gx1 = fract(gx1);
vec4 gz1 = vec4(0.5) - abs(gx1) - abs(gy1);
vec4 sz1 = step(gz1, vec4(0.0));
gx1 -= sz1 * (step(0.0, gx1) - 0.5);
gy1 -= sz1 * (step(0.0, gy1) - 0.5);
vec3 g000 = vec3(gx0.x,gy0.x,gz0.x);
vec3 g100 = vec3(gx0.y,gy0.y,gz0.y);
vec3 g010 = vec3(gx0.z,gy0.z,gz0.z);
vec3 g110 = vec3(gx0.w,gy0.w,gz0.w);
vec3 g001 = vec3(gx1.x,gy1.x,gz1.x);
vec3 g101 = vec3(gx1.y,gy1.y,gz1.y);
vec3 g011 = vec3(gx1.z,gy1.z,gz1.z);
vec3 g111 = vec3(gx1.w,gy1.w,gz1.w);
vec4 norm0 = taylorInvSqrt(vec4(dot(g000, g000), dot(g010, g010), dot(g100, g100), dot(g110, g110)));
g000 *= norm0.x;
g010 *= norm0.y;
g100 *= norm0.z;
g110 *= norm0.w;
vec4 norm1 = taylorInvSqrt(vec4(dot(g001, g001), dot(g011, g011), dot(g101, g101), dot(g111, g111)));
g001 *= norm1.x;
g011 *= norm1.y;
g101 *= norm1.z;
g111 *= norm1.w;
float n000 = dot(g000, Pf0);
float n100 = dot(g100, vec3(Pf1.x, Pf0.yz));
float n010 = dot(g010, vec3(Pf0.x, Pf1.y, Pf0.z));
float n110 = dot(g110, vec3(Pf1.xy, Pf0.z));
float n001 = dot(g001, vec3(Pf0.xy, Pf1.z));
float n101 = dot(g101, vec3(Pf1.x, Pf0.y, Pf1.z));
float n011 = dot(g011, vec3(Pf0.x, Pf1.yz));
float n111 = dot(g111, Pf1);
vec3 fade_xyz = fade(Pf0);
vec4 n_z = mix(vec4(n000, n100, n010, n110), vec4(n001, n101, n011, n111), fade_xyz.z);
vec2 n_yz = mix(n_z.xy, n_z.zw, fade_xyz.y);
float n_xyz = mix(n_yz.x, n_yz.y, fade_xyz.x);
return 2.2 * n_xyz;
}
// Classic Perlin noise, periodic variant
float pnoise(vec3 P, vec3 rep)
{
vec3 Pi0 = mod(floor(P), rep); // Integer part, modulo period
vec3 Pi1 = mod(Pi0 + vec3(1.0), rep); // Integer part + 1, mod period
Pi0 = mod289(Pi0);
Pi1 = mod289(Pi1);
vec3 Pf0 = fract(P); // Fractional part for interpolation
vec3 Pf1 = Pf0 - vec3(1.0); // Fractional part - 1.0
vec4 ix = vec4(Pi0.x, Pi1.x, Pi0.x, Pi1.x);
vec4 iy = vec4(Pi0.yy, Pi1.yy);
vec4 iz0 = Pi0.zzzz;
vec4 iz1 = Pi1.zzzz;
vec4 ixy = permute(permute(ix) + iy);
vec4 ixy0 = permute(ixy + iz0);
vec4 ixy1 = permute(ixy + iz1);
vec4 gx0 = ixy0 * (1.0 / 7.0);
vec4 gy0 = fract(floor(gx0) * (1.0 / 7.0)) - 0.5;
gx0 = fract(gx0);
vec4 gz0 = vec4(0.5) - abs(gx0) - abs(gy0);
vec4 sz0 = step(gz0, vec4(0.0));
gx0 -= sz0 * (step(0.0, gx0) - 0.5);
gy0 -= sz0 * (step(0.0, gy0) - 0.5);
vec4 gx1 = ixy1 * (1.0 / 7.0);
vec4 gy1 = fract(floor(gx1) * (1.0 / 7.0)) - 0.5;
gx1 = fract(gx1);
vec4 gz1 = vec4(0.5) - abs(gx1) - abs(gy1);
vec4 sz1 = step(gz1, vec4(0.0));
gx1 -= sz1 * (step(0.0, gx1) - 0.5);
gy1 -= sz1 * (step(0.0, gy1) - 0.5);
vec3 g000 = vec3(gx0.x,gy0.x,gz0.x);
vec3 g100 = vec3(gx0.y,gy0.y,gz0.y);
vec3 g010 = vec3(gx0.z,gy0.z,gz0.z);
vec3 g110 = vec3(gx0.w,gy0.w,gz0.w);
vec3 g001 = vec3(gx1.x,gy1.x,gz1.x);
vec3 g101 = vec3(gx1.y,gy1.y,gz1.y);
vec3 g011 = vec3(gx1.z,gy1.z,gz1.z);
vec3 g111 = vec3(gx1.w,gy1.w,gz1.w);
vec4 norm0 = taylorInvSqrt(vec4(dot(g000, g000), dot(g010, g010), dot(g100, g100), dot(g110, g110)));
g000 *= norm0.x;
g010 *= norm0.y;
g100 *= norm0.z;
g110 *= norm0.w;
vec4 norm1 = taylorInvSqrt(vec4(dot(g001, g001), dot(g011, g011), dot(g101, g101), dot(g111, g111)));
g001 *= norm1.x;
g011 *= norm1.y;
g101 *= norm1.z;
g111 *= norm1.w;
float n000 = dot(g000, Pf0);
float n100 = dot(g100, vec3(Pf1.x, Pf0.yz));
float n010 = dot(g010, vec3(Pf0.x, Pf1.y, Pf0.z));
float n110 = dot(g110, vec3(Pf1.xy, Pf0.z));
float n001 = dot(g001, vec3(Pf0.xy, Pf1.z));
float n101 = dot(g101, vec3(Pf1.x, Pf0.y, Pf1.z));
float n011 = dot(g011, vec3(Pf0.x, Pf1.yz));
float n111 = dot(g111, Pf1);
vec3 fade_xyz = fade(Pf0);
vec4 n_z = mix(vec4(n000, n100, n010, n110), vec4(n001, n101, n011, n111), fade_xyz.z);
vec2 n_yz = mix(n_z.xy, n_z.zw, fade_xyz.y);
float n_xyz = mix(n_yz.x, n_yz.y, fade_xyz.x);
return 2.2 * n_xyz;
}
uniform float time;
varying vec2 vUv;
uniform vec3 planeDir;
varying float noise;
void main() {
vUv = uv;
// add time to the noise parameters so it's animated
//noise = 10.0 * -.10 * turbulence( .5 * normal + time );
noise = 10.*pnoise( 0.03 * position + vec3(0., 1., 0.) * time * .03, vec3(100.0));
//float displacement = - noise + b;
vec3 newPosition = position + noise * vec3( 0.0 , 0.0 , 1.0) + vec3(0., 30., -4.);
gl_Position = projectionMatrix * modelViewMatrix * vec4( newPosition, 1.0 );
}
</script>
<script type="x-shader/x-vertex" id="fragmentShader">
varying vec2 vUv;
varying float noise;
vec3 color;
void main() {
if(noise >0.) {
color = (vUv,1.)*vec3(0.5,1.,0.);
}
else {
color = (vUv,1.)*vec3(0.,1.,1.);
}
gl_FragColor = vec4(vUv,0., 1. );
}
</script>
<script type="text/javascript" id="mainCode">
var container,
renderer,
scene,
camera,
mesh,
start = Date.now(),
fov = 30;
window.addEventListener( 'load', function() {
// grab the container from the DOM
container = document.getElementById( "container" );
// create a scene
scene = new THREE.Scene();
// create a camera the size of the browser window
// and place it 100 units away, looking towards the center of the scene
camera = new THREE.PerspectiveCamera(
fov,
window.innerWidth / window.innerHeight,
1,
10000 );
camera.position.z = 100;
camera.position.y = 12;
camera.target = new THREE.Vector3( 0, 0, 0 );
controls = new THREE.OrbitControls( camera );
controls.target.set( 0, 0, 0 );
controls.rotateSpeed = 1.0;
controls.zoomSpeed = 1.2;
controls.panSpeed = 0.8;
controls.keys = [ 65, 83, 68 ];
scene.add( camera );
material = new THREE.ShaderMaterial( {
uniforms: {
time: { // float initialized to 0
type: "f",
value: 0.0
},
planeDir: {
type: "v3",
value: new THREE.Vector3( 0.0, 0.0, -1.0 )
}
},
vertexShader: document.getElementById( 'vertexShader' ).textContent,
fragmentShader: document.getElementById( 'fragmentShader' ).textContent
} );
// create a sphere and assign the material
mesh = new THREE.Mesh(
new THREE.PlaneGeometry( 300, 300, 150, 150 ),
material
);
mesh.rotateX( - Math.PI / 2 );
//mesh.visible = false
scene.add( mesh );
// create the renderer and attach it to the DOM
renderer = new THREE.WebGLRenderer({ alpha: true });
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
render();
} );
function render() {
controls.update();
material.uniforms[ 'time' ].value += 1;
var rot = new THREE.Quaternion();
rot.setFromUnitVectors(new THREE.Vector3(0, 1.0, 0), material.uniforms['planeDir'].value);
mesh.quaternion.slerp(rot, 1.0/64.0);
console.log(mesh.quaternion);
// let there be light
renderer.render( scene, camera );
requestAnimationFrame( render );
}
document.onkeydown = keyDown;
document.onkeyup = keyUp;
function keyDown(e) {
e = e || window.event;
if (e.keyCode == '38') {
// up arrow
}
else if (e.keyCode == '40') {
// down arrow
}
else if (e.keyCode == '37') {
// left arrow
material.uniforms[ 'planeDir' ].value = new THREE.Vector3( -1.0, 0, -6.0 ).normalize();
}
else if (e.keyCode == '39') {
// right arrow
material.uniforms[ 'planeDir' ].value = new THREE.Vector3( 1.0, 0.0, -6.0 ).normalize();
}
}
function keyUp(e) {
e = e || window.event;
if (e.keyCode == '38') {
// up arrow
}
else if (e.keyCode == '40') {
// down arrow
}
else if (e.keyCode == '37') {
// left arrow
material.uniforms[ 'planeDir' ].value = new THREE.Vector3( 0.0, 0.0, -1.0 );
}
else if (e.keyCode == '39') {
// right arrow
material.uniforms[ 'planeDir' ].value = new THREE.Vector3( 0.0, 0.0, -1.0);
}
}
</script>
</html>