Doodle3D-Slicer/three.js-master/examples/js/crossfade/scenes.js
2015-06-12 15:58:26 +02:00

110 lines
2.8 KiB
JavaScript
Executable File

function generateGeometry(objectType, numObjects) {
var geometry = new THREE.Geometry();
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;
}
} );
}
for ( var i = 0; i < numObjects; 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();
var geom, color = new THREE.Color();
scale.x = Math.random() * 200 + 100;
if ( objectType == "cube" )
{
geom = new THREE.BoxGeometry( 1, 1, 1 );
scale.y = Math.random() * 200 + 100;
scale.z = Math.random() * 200 + 100;
color.setRGB( 0, 0, Math.random() + 0.1 );
}
else if ( objectType == "sphere" )
{
geom = new THREE.IcosahedronGeometry( 1, 1 )
scale.y = scale.z = scale.x;
color.setRGB( Math.random() + 0.1, 0, 0 );
}
// give the geom's vertices a random color, to be displayed
applyVertexColors( geom, color );
var mesh = new THREE.Mesh( geom );
mesh.position.copy( position );
mesh.rotation.copy( rotation );
mesh.scale.copy( scale );
mesh.updateMatrix();
geometry.merge( mesh.geometry, mesh.matrix );
}
return geometry;
}
function Scene ( type, numObjects, cameraZ, fov, rotationSpeed, clearColor ) {
this.clearColor = clearColor;
this.camera = new THREE.PerspectiveCamera( fov, window.innerWidth / window.innerHeight, 1, 10000 );
this.camera.position.z = cameraZ;
// Setup scene
this.scene = new THREE.Scene();
this.scene.add( new THREE.AmbientLight( 0x555555 ) );
var light = new THREE.SpotLight( 0xffffff, 1.5 );
light.position.set( 0, 500, 2000 );
this.scene.add( light );
this.rotationSpeed = rotationSpeed;
defaultMaterial = new THREE.MeshLambertMaterial({ color: 0xffffff, shading: THREE.FlatShading, vertexColors: THREE.VertexColors } );
this.mesh = new THREE.Mesh( generateGeometry( type, numObjects ), defaultMaterial );
this.scene.add( this.mesh );
renderTargetParameters = { minFilter: THREE.LinearFilter, magFilter: THREE.LinearFilter, format: THREE.RGBFormat, stencilBuffer: false };
this.fbo = new THREE.WebGLRenderTarget( window.innerWidth, window.innerHeight, renderTargetParameters );
this.render = function( delta, rtt ) {
this.mesh.rotation.x += delta * this.rotationSpeed.x;
this.mesh.rotation.y += delta * this.rotationSpeed.y;
this.mesh.rotation.z += delta * this.rotationSpeed.z;
renderer.setClearColor( this.clearColor );
if (rtt)
renderer.render( this.scene, this.camera, this.fbo, true );
else
renderer.render( this.scene, this.camera );
};
}