mirror of
https://github.com/wahyd4/three.js.git
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alteredq
ebf93289f8
Still a bit dirty but less than it was before. Maybe also sprites could be pluginized.
92 lines
2.3 KiB
JavaScript
92 lines
2.3 KiB
JavaScript
/**
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* @author mikael emtinger / http://gomo.se/
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* @author alteredq / http://alteredqualia.com/
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*/
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THREE.LensFlare = function ( texture, size, distance, blending, color ) {
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THREE.Object3D.call( this );
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this.lensFlares = [];
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this.positionScreen = new THREE.Vector3();
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this.customUpdateCallback = undefined;
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if( texture !== undefined ) {
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this.add( texture, size, distance, blending, color );
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}
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};
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THREE.LensFlare.prototype = new THREE.Object3D();
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THREE.LensFlare.prototype.constructor = THREE.LensFlare;
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THREE.LensFlare.prototype.supr = THREE.Object3D.prototype;
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/*
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* Add: adds another flare
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*/
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THREE.LensFlare.prototype.add = function ( texture, size, distance, blending, color, opacity ) {
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if( size === undefined ) size = -1;
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if( distance === undefined ) distance = 0;
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if( opacity === undefined ) opacity = 1;
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if( color === undefined ) color = new THREE.Color( 0xffffff );
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if( blending === undefined ) blending = THREE.BillboardBlending;
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distance = Math.min( distance, Math.max( 0, distance ) );
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this.lensFlares.push( { texture: texture, // THREE.Texture
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size: size, // size in pixels (-1 = use texture.width)
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distance: distance, // distance (0-1) from light source (0=at light source)
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x: 0, y: 0, z: 0, // screen position (-1 => 1) z = 0 is ontop z = 1 is back
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scale: 1, // scale
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rotation: 1, // rotation
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opacity: opacity, // opacity
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color: color, // color
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blending: blending } ); // blending
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};
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/*
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* Update lens flares update positions on all flares based on the screen position
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* Set myLensFlare.customUpdateCallback to alter the flares in your project specific way.
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*/
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THREE.LensFlare.prototype.updateLensFlares = function () {
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var f, fl = this.lensFlares.length;
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var flare;
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var vecX = -this.positionScreen.x * 2;
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var vecY = -this.positionScreen.y * 2;
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for( f = 0; f < fl; f ++ ) {
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flare = this.lensFlares[ f ];
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flare.x = this.positionScreen.x + vecX * flare.distance;
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flare.y = this.positionScreen.y + vecY * flare.distance;
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flare.wantedRotation = flare.x * Math.PI * 0.25;
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flare.rotation += ( flare.wantedRotation - flare.rotation ) * 0.25;
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}
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};
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