mirror of
https://github.com/wahyd4/three.js.git
synced 2026-08-09 04:56:01 +10:00
alteredq
cf37a8cc43
Otherwise things are very much work in progress, expect everything to be broken.
98 lines
1.9 KiB
JavaScript
98 lines
1.9 KiB
JavaScript
/**
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* @author mikael emtinger / http://gomo.se/
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*/
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THREE.LOD = function() {
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THREE.Object3D.call( this );
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this.LODs = [];
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};
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THREE.LOD.prototype = new THREE.Object3D();
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THREE.LOD.prototype.constructor = THREE.LOD;
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THREE.LOD.prototype.supr = THREE.Object3D.prototype;
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/*
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* Add
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*/
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THREE.LOD.prototype.add = function( object3D, visibleAtDistance ) {
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if( visibleAtDistance === undefined ) visibleAtDistance = 0;
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visibleAtDistance = Math.abs( visibleAtDistance );
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for( var l = 0; l < this.LODs.length; l++ ) {
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if( visibleAtDistance < this.LODs[ l ].visibleAtDistance )
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break;
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}
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this.LODs.splice( l, 0, { visibleAtDistance: visibleAtDistance, object3D: object3D } );
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this.addChild( object3D );
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};
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/*
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* Update
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*/
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THREE.LOD.prototype.update = function( parentGlobalMatrix, forceUpdate, camera, renderer ) {
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// update local
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if( this.autoUpdateMatrix )
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forceUpdate |= this.updateMatrix();
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// update global
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if( forceUpdate || this.matrixNeedsToUpdate ) {
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if( parentGlobalMatrix )
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this.globalMatrix.multiply( parentGlobalMatrix, this.localMatrix );
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else
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this.globalMatrix.copy( this.localMatrix );
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this.matrixNeedsToUpdate = false;
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forceUpdate = true;
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}
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// update lods
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if( this.LODs.length > 1 ) {
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var distance = -camera.inverseMatrix.mulitplyVector3OnlyZ( this.position );
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this.LODs[ 0 ].object3D.visible = true;
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for( var l = 1; l < this.LODs.length; l++ ) {
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if( distance >= this.LODs[ l ].visibleAtDistance ) {
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this.LODs[ l - 1 ].object3D.visible = false;
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this.LODs[ l ].object3D.visible = true;
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}
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else
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break;
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}
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for( ; l < this.LODs.length; l++ )
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this.LODs[ l ].object3D.visible = false;
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}
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// update children
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for( var c = 0; c < this.children.length; c++ )
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this.children[ c ].update( this.globalMatrix, forceUpdate, camera, renderer );
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};
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