mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-12-25 04:23:47 +01:00
253 lines
6.0 KiB
HTML
253 lines
6.0 KiB
HTML
|
<!DOCTYPE html>
|
||
|
|
<html lang="en">
|
||
|
|
<head>
|
||
|
|
<title>three.js webgl - interactive cubes (gpu)</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: #f0f0f0;
|
||
|
|
margin: 0px;
|
||
|
|
overflow: hidden;
|
||
|
|
}
|
||
|
|
|
||
|
|
.info {
|
||
|
|
position: absolute;
|
||
|
|
background-color: black;
|
||
|
|
opacity: 0.8;
|
||
|
|
color: white;
|
||
|
|
text-align: center;
|
||
|
|
top: 0px;
|
||
|
|
width: 100%;
|
||
|
|
}
|
||
|
|
|
||
|
|
.info a {
|
||
|
|
color: #00ffff;
|
||
|
|
}
|
||
|
|
</style>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
|
||
|
|
<div class="info">
|
||
|
|
<a href="http://threejs.org" target="_blank">three.js</a> webgl - gpu picking
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div id="container"></div>
|
||
|
|
|
||
|
|
<script src="../build/three.min.js"></script>
|
||
|
|
|
||
|
|
<script src="js/controls/TrackballControls.js"></script>
|
||
|
|
|
||
|
|
<script src="js/libs/stats.min.js"></script>
|
||
|
|
|
||
|
|
<script>
|
||
|
|
|
||
|
|
var container, stats;
|
||
|
|
var camera, controls, scene, renderer;
|
||
|
|
var pickingData = [], pickingTexture, pickingScene;
|
||
|
|
var objects = [];
|
||
|
|
var highlightBox;
|
||
|
|
|
||
|
|
var mouse = new THREE.Vector2();
|
||
|
|
var offset = new THREE.Vector3( 10, 10, 10 );
|
||
|
|
|
||
|
|
init();
|
||
|
|
animate();
|
||
|
|
|
||
|
|
function init() {
|
||
|
|
|
||
|
|
container = document.getElementById( "container" );
|
||
|
|
|
||
|
|
camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 10000 );
|
||
|
|
camera.position.z = 1000;
|
||
|
|
|
||
|
|
controls = new THREE.TrackballControls( camera );
|
||
|
|
controls.rotateSpeed = 1.0;
|
||
|
|
controls.zoomSpeed = 1.2;
|
||
|
|
controls.panSpeed = 0.8;
|
||
|
|
controls.noZoom = false;
|
||
|
|
controls.noPan = false;
|
||
|
|
controls.staticMoving = true;
|
||
|
|
controls.dynamicDampingFactor = 0.3;
|
||
|
|
|
||
|
|
scene = new THREE.Scene();
|
||
|
|
|
||
|
|
pickingScene = new THREE.Scene();
|
||
|
|
pickingTexture = new THREE.WebGLRenderTarget( window.innerWidth, window.innerHeight );
|
||
|
|
pickingTexture.minFilter = THREE.LinearFilter;
|
||
|
|
pickingTexture.generateMipmaps = false;
|
||
|
|
|
||
|
|
scene.add( new THREE.AmbientLight( 0x555555 ) );
|
||
|
|
|
||
|
|
var light = new THREE.SpotLight( 0xffffff, 1.5 );
|
||
|
|
light.position.set( 0, 500, 2000 );
|
||
|
|
scene.add( light );
|
||
|
|
|
||
|
|
var geometry = new THREE.Geometry(),
|
||
|
|
pickingGeometry = new THREE.Geometry(),
|
||
|
|
pickingMaterial = new THREE.MeshBasicMaterial( { vertexColors: THREE.VertexColors } ),
|
||
|
|
defaultMaterial = new THREE.MeshLambertMaterial({ color: 0xffffff, shading: THREE.FlatShading, vertexColors: THREE.VertexColors } );
|
||
|
|
|
||
|
|
function applyVertexColors( g, c ) {
|
||
|
|
|
||
|
|
g.faces.forEach( function( f ) {
|
||
|
|
|
||
|
|
var n = ( f instanceof THREE.Face3 ) ? 3 : 4;
|
||
|
|
|
||
|
|
for( var j = 0; j < n; j ++ ) {
|
||
|
|
|
||
|
|
f.vertexColors[ j ] = c;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
var geom = new THREE.BoxGeometry( 1, 1, 1 );
|
||
|
|
var color = new THREE.Color();
|
||
|
|
|
||
|
|
var matrix = new THREE.Matrix4();
|
||
|
|
var quaternion = new THREE.Quaternion();
|
||
|
|
|
||
|
|
for ( var i = 0; i < 5000; i ++ ) {
|
||
|
|
|
||
|
|
var position = new THREE.Vector3();
|
||
|
|
position.x = Math.random() * 10000 - 5000;
|
||
|
|
position.y = Math.random() * 6000 - 3000;
|
||
|
|
position.z = Math.random() * 8000 - 4000;
|
||
|
|
|
||
|
|
var rotation = new THREE.Euler();
|
||
|
|
rotation.x = Math.random() * 2 * Math.PI;
|
||
|
|
rotation.y = Math.random() * 2 * Math.PI;
|
||
|
|
rotation.z = Math.random() * 2 * Math.PI;
|
||
|
|
|
||
|
|
var scale = new THREE.Vector3();
|
||
|
|
scale.x = Math.random() * 200 + 100;
|
||
|
|
scale.y = Math.random() * 200 + 100;
|
||
|
|
scale.z = Math.random() * 200 + 100;
|
||
|
|
|
||
|
|
quaternion.setFromEuler( rotation, false );
|
||
|
|
matrix.compose( position, quaternion, scale );
|
||
|
|
|
||
|
|
// give the geom's vertices a random color, to be displayed
|
||
|
|
|
||
|
|
applyVertexColors( geom, color.setHex( Math.random() * 0xffffff ) );
|
||
|
|
|
||
|
|
geometry.merge( geom, matrix );
|
||
|
|
|
||
|
|
// give the geom's vertices a color corresponding to the "id"
|
||
|
|
|
||
|
|
applyVertexColors( geom, color.setHex( i ) );
|
||
|
|
|
||
|
|
pickingGeometry.merge( geom, matrix );
|
||
|
|
|
||
|
|
pickingData[ i ] = {
|
||
|
|
|
||
|
|
position: position,
|
||
|
|
rotation: rotation,
|
||
|
|
scale: scale
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
var drawnObject = new THREE.Mesh( geometry, defaultMaterial );
|
||
|
|
scene.add( drawnObject );
|
||
|
|
|
||
|
|
pickingScene.add( new THREE.Mesh( pickingGeometry, pickingMaterial ) );
|
||
|
|
|
||
|
|
highlightBox = new THREE.Mesh(
|
||
|
|
new THREE.BoxGeometry( 1, 1, 1 ),
|
||
|
|
new THREE.MeshLambertMaterial( { color: 0xffff00 }
|
||
|
|
) );
|
||
|
|
scene.add( highlightBox );
|
||
|
|
|
||
|
|
renderer = new THREE.WebGLRenderer( { antialias: true } );
|
||
|
|
renderer.setClearColor( 0xffffff );
|
||
|
|
renderer.setPixelRatio( window.devicePixelRatio );
|
||
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
||
|
|
renderer.sortObjects = false;
|
||
|
|
container.appendChild( renderer.domElement );
|
||
|
|
|
||
|
|
stats = new Stats();
|
||
|
|
stats.domElement.style.position = 'absolute';
|
||
|
|
stats.domElement.style.top = '0px';
|
||
|
|
container.appendChild( stats.domElement );
|
||
|
|
|
||
|
|
renderer.domElement.addEventListener( 'mousemove', onMouseMove );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
|
||
|
|
function onMouseMove( e ) {
|
||
|
|
|
||
|
|
mouse.x = e.clientX;
|
||
|
|
mouse.y = e.clientY;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function animate() {
|
||
|
|
|
||
|
|
requestAnimationFrame( animate );
|
||
|
|
|
||
|
|
render();
|
||
|
|
stats.update();
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function pick() {
|
||
|
|
|
||
|
|
//render the picking scene off-screen
|
||
|
|
|
||
|
|
renderer.render( pickingScene, camera, pickingTexture );
|
||
|
|
|
||
|
|
//create buffer for reading single pixel
|
||
|
|
var pixelBuffer = new Uint8Array( 4 );
|
||
|
|
|
||
|
|
//read the pixel under the mouse from the texture
|
||
|
|
renderer.readRenderTargetPixels(pickingTexture, mouse.x, pickingTexture.height - mouse.y, 1, 1, pixelBuffer);
|
||
|
|
|
||
|
|
//interpret the pixel as an ID
|
||
|
|
|
||
|
|
var id = ( pixelBuffer[0] << 16 ) | ( pixelBuffer[1] << 8 ) | ( pixelBuffer[2] );
|
||
|
|
var data = pickingData[ id ];
|
||
|
|
|
||
|
|
if ( data) {
|
||
|
|
|
||
|
|
//move our highlightBox so that it surrounds the picked object
|
||
|
|
|
||
|
|
if ( data.position && data.rotation && data.scale ){
|
||
|
|
|
||
|
|
highlightBox.position.copy( data.position );
|
||
|
|
highlightBox.rotation.copy( data.rotation );
|
||
|
|
highlightBox.scale.copy( data.scale ).add( offset );
|
||
|
|
highlightBox.visible = true;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
highlightBox.visible = false;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function render() {
|
||
|
|
|
||
|
|
controls.update();
|
||
|
|
|
||
|
|
pick();
|
||
|
|
|
||
|
|
renderer.render( scene, camera );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
</script>
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|