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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - interactive - voxel painter</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
</head>
<body id="body">
<script src="libs/three.js"></script>
<script src="libs/Detector.js"></script>
<script src="libs/OrbitControls.js"></script>
<script src="libs/hilbert2D.js"></script>
<script src="libs/hilbert3D.js"></script>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script>
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
var camera, scene, renderer;
var plane, cube;
var mouse, raycaster, isShiftDown = false;
var rollOverMesh, rollOverMaterial;
var cubeGeo, cubeMaterial;
var objects = [];
var voxels = []
var earth_raduis = 180
var cubeMap={}
var objects=[]
var hilbert3DIt =3
//var points2d = hilbert2D( new THREE.Vector3( 0, 0, 0 ), width, it )
var points = hilbert3D( new THREE.Vector3( 0, 0, 0 ), earth_raduis, hilbert3DIt, 0, 1, 2, 3, 4, 5, 6, 7 )
var cubeLen = (earth_raduis*2)/Math.pow(points.length,1/3)
var it = Math.log(points.length)/Math.log(4)-1
var width = cubeLen*Math.sqrt(Math.pow(4,it+1))/2
var points2d = hilbert2D( new THREE.Vector3( 0, -earth_raduis, 0 ), width, it )
var indexIn2d = 0
var cubeGeo = new THREE.BoxBufferGeometry( cubeLen, cubeLen, cubeLen );
init();
render();
show3dHilbertCurve(points)
//show2dHilbertCurve(points2d)
//animate();
function init() {
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 100000 );
camera.position.set( 0, 1000, 1000 );
camera.lookAt( new THREE.Vector3() );
scene = new THREE.Scene();
scene.background = new THREE.Color( 0x000000 );
//objects.push( plane );
// lights
var ambientLight = new THREE.AmbientLight( 0x606060 );
scene.add( ambientLight );
var directionalLight = new THREE.DirectionalLight( 0xffffff );
directionalLight.position.set( 1, 0.75, 0.5 ).normalize();
scene.add( directionalLight );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
//
window.addEventListener( 'resize', onWindowResize, false );
var controls = new THREE.OrbitControls( camera, renderer.domElement);
controls.minDistance = 2;
controls.maxDistance = 100000;
controls.maxPolarAngle = Math.PI;
render();
}
function show3dHilbertCurve(points){
// 3d lines
// 3d points length:8^(n+1)
var geometry3 = new THREE.Geometry()
var colors3 = [];
for ( var i = 0; i < points.length; i ++ ) {
geometry3.vertices.push( points[ i ] );
colors3[ i ] = new THREE.Color( 0xffffff );
colors3[ i ].setHSL( i / points.length, 1, 0.5 );
}
geometry3.colors = colors3;
// lines
var material = new THREE.LineBasicMaterial( { color: 0xffffff, linewidth: 3, vertexColors: THREE.VertexColors } );
var line3d = new THREE.Line( geometry3, material );
//line3d.scale.set( 0.4, 0.4, 0.4 );
line3d.position.set( 0, 0, 0 );
scene.add( line3d );
}
function show2dHilbertCurve(points){
var geometry2 = new THREE.Geometry()
var colors2 = []
for ( var i = 0; i < points.length; i ++ ) {
geometry2.vertices.push( points[ i ] );
colors2[ i ] = new THREE.Color( 0xffffff );
colors2[ i ].setHSL( i / points.length, 1, 0.5 );
}
geometry2.colors = colors2;
// lines
var material = new THREE.LineBasicMaterial( { color: 0xffffff, linewidth: 3, vertexColors: THREE.VertexColors } );
var line2d = new THREE.Line( geometry2, material );
line2d.position.set( 0, -2, 0 );
scene.add( line2d );
}
function createInnerEarth(){
//createEarth
var whiteMaterial= new THREE.MeshPhongMaterial({
color:0xffffff,//三角面颜色
//side:THREE.DoubleSide//两面可见
});
var yellowMaterial= new THREE.MeshPhongMaterial({
color:0xffff00,//三角面颜色
//side:THREE.DoubleSide//两面可见
});
var orangeMaterial= new THREE.MeshPhongMaterial({
color:0xFFA500,//三角面颜色
//side:THREE.DoubleSide//两面可见
});
var redMaterial= new THREE.MeshPhongMaterial({
color:0xF75000,//三角面颜色
//side:THREE.DoubleSide//两面可见
});
var darkRedMaterial= new THREE.MeshPhongMaterial({
color:0xCE0000,//三角面颜色
//side:THREE.DoubleSide//两面可见
});
var crustMaterial= new THREE.MeshPhongMaterial({
color:0x333333,//三角面颜色
//side:THREE.DoubleSide//两面可见
});
var shellMaterial= new THREE.MeshPhongMaterial({
color:0x0033ff,//三角面颜色
//side:THREE.DoubleSide//两面可见
});
function getInnerKenalMaterial(){
var r = Math.floor(Math.random()*10)
if(r<3){
return whiteMaterial
}else{
return yellowMaterial
}
}
function getOutKenalMaterial(){
var r = Math.floor(Math.random()*10)
if(r<1){
return whiteMaterial
}else if(r<4){
return yellowMaterial
}else{
return orangeMaterial
}
}
function getLowMantleMaterial(){
var r = Math.floor(Math.random()*10)
if(r<2){
return orangeMaterial
}else{
return redMaterial
}
}
function getUpperMantleMaterial(sqaure_dis){
return crustMaterial
}
function getCrustMaterial(){
return crustMaterial
}
for(var i=0;i<points.length;i++){
var point = points[i]
var x = point.x
var y = point.y
var z = point.z
var sqaure_dis = Math.pow(x,2)+Math.pow(y,2)+Math.pow(z,2)
var voxel = null
var add2Scene = true
if(sqaure_dis < Math.pow(earth_raduis*0.215,2)){
voxel = new THREE.Mesh( cubeGeo, getInnerKenalMaterial() );
}else if(sqaure_dis < Math.pow(earth_raduis*(0.215+0.33),2)){
voxel = new THREE.Mesh( cubeGeo, getOutKenalMaterial() );
}else if(sqaure_dis < Math.pow(earth_raduis*(0.215+0.33+0.32),2)){
voxel = new THREE.Mesh( cubeGeo, getLowMantleMaterial() );
}else if(sqaure_dis < Math.pow(earth_raduis*(0.215+0.33+0.32+0.1),2)){
voxel = new THREE.Mesh( cubeGeo, getUpperMantleMaterial(sqaure_dis) );
}else if(sqaure_dis < Math.pow(earth_raduis,2)){
voxel = new THREE.Mesh( cubeGeo, getCrustMaterial() );
}else{
voxel = new THREE.Mesh( cubeGeo, shellMaterial );
add2Scene = false
}
if(cubeMap[x+":"+y+":"+z]){//地壳已经包含
continue
}
if(voxel){
voxel.position.set(x,y,z)
objects.push( voxel );
voxels.push(voxel)
// if(add2Scene&&z<0){//z<0 for half
// scene.add( voxel );
// }
if(add2Scene){
scene.add( voxel );
}
}
cubeMap[x+":"+y+":"+z] = voxel
}
}
function createEarthShell(points){
for(var i=0;i<points.length;i++){
var point = points[i]
// if(point['z']>0){
// continue
// }
var color = point['color']
var shellMaterial= new THREE.MeshPhongMaterial({
color:color,//三角面颜色
//side:THREE.DoubleSide//两面可见
});
var voxel = new THREE.Mesh( cubeGeo, shellMaterial );
voxel.position.set(point['x'],point['y'],point['z'])
objects.push( voxel );
voxels.push(voxel)
scene.add( voxel );
cubeMap[point['x']+":"+point['y']+":"+point['z']] = voxel
}
}
function loadModels(){
$.get("earth_shell_3it.json", function(result,status){
if(result == "file not found"){
alert("加载地壳模型异常！")
}else{
var points = result//JSON.parse(result)
createEarthShell(points)
createInnerEarth()
animate()
//transDim()
}
})
}
loadModels()
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function render() {
renderer.render( scene, camera );
}
var actionStep = 0
var theta = 0
var alpha = 0.5
function animate() {
render();
requestAnimationFrame( animate );
moveCamera()
if(actionStep == 0){
add2dCurve()
}else{
moveCube()
}
//moveCube()
}
var pushIndex = 0
function add2dCurve(){
if(pushIndex>=points2d.length-1){
actionStep = 1
return
}
var geometry2 = new THREE.Geometry()
var colors2 = []
//for ( var i = 0; i < points.length; i ++ ) {
geometry2.vertices.push( points2d[ pushIndex ] );
geometry2.vertices.push( points2d[ pushIndex+1 ] );
colors2[ 0 ] = new THREE.Color( 0xffffff );
colors2[ 1 ] = new THREE.Color( 0xffffff );
colors2[ 0 ].setHSL( pushIndex / points.length, 1, 0.5 );
colors2[ 1 ].setHSL( (pushIndex+1) / points.length, 1, 0.5 );
//}
geometry2.colors = colors2;
// lines
var material = new THREE.LineBasicMaterial( { color: 0xffffff, linewidth: 3, vertexColors: THREE.VertexColors } );
var line2d = new THREE.Line( geometry2, material );
line2d.position.set( 0, 0, 0 );
scene.add( line2d );
pushIndex++
}
function moveCamera(){
var r = 2200
var cz = r*Math.sin(alpha)*Math.sin(theta)
var cx = r*Math.sin(alpha)*Math.cos(theta)
var cy = r*Math.cos(alpha)
theta-=0.001
//alpha+=0.001
camera.position.set(cx,cy,cz)
camera.lookAt(0,-650,0)
camera.rotateOnWorldAxis(new THREE.Vector3(0,1,0),0.001)
}
function moveCube(){
for (var i=0;i<points.length-1;i++){
var point = points[i]
var voxel = cubeMap[point.x+":"+point.y+":"+point.z]
var nextPoint = points[i+1]
var nextVoxel = cubeMap[nextPoint.x+":"+nextPoint.y+":"+nextPoint.z]
voxel.position.copy(nextVoxel.position)
}
var lastIndex = points.length-1
var lastPoint = points[lastIndex]
var lastVoxel = cubeMap[lastPoint.x+":"+lastPoint.y+":"+lastPoint.z]
var copyVec = new THREE.Vector3()
copyVec.copy(points2d[indexIn2d])
var distance = copyVec.sub(lastVoxel.position)
if(distance.length()<cubeLen){
lastVoxel.position.copy(points2d[indexIn2d])
indexIn2d++
}else{
var step = distance.normalize().multiplyScalar(cubeLen)
lastVoxel.position.add(step)
}
}
function transDim(){
for (var i=0;i<points.length-1;i++){
var point = points[i]
var voxel = cubeMap[point.x+":"+point.y+":"+point.z]
var point2d = points2d[i]
voxel.position.x = point2d.x
voxel.position.y = point2d.y
voxel.position.z = point2d.z
}
}
</script>
</body>
</html>