101 lines
2.9 KiB
JavaScript
101 lines
2.9 KiB
JavaScript
/**
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* @author mrdoob / http://mrdoob.com/
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*/
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THREE.BoxHelper = function ( object ) {
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var geometry = new THREE.BufferGeometry();
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geometry.addAttribute( 'position', new THREE.BufferAttribute( new Float32Array( 72 ), 3 ) );
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THREE.Line.call( this, geometry, new THREE.LineBasicMaterial( { color: 0xffff00 } ), THREE.LinePieces );
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if ( object !== undefined ) {
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this.update( object );
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}
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};
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THREE.BoxHelper.prototype = Object.create( THREE.Line.prototype );
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THREE.BoxHelper.prototype.constructor = THREE.BoxHelper;
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THREE.BoxHelper.prototype.update = function ( object ) {
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var geometry = object.geometry;
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if ( geometry.boundingBox === null ) {
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geometry.computeBoundingBox();
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}
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var min = geometry.boundingBox.min;
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var max = geometry.boundingBox.max;
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/*
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5____4
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1/___0/|
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| 6__|_7
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2/___3/
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0: max.x, max.y, max.z
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1: min.x, max.y, max.z
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2: min.x, min.y, max.z
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3: max.x, min.y, max.z
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4: max.x, max.y, min.z
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5: min.x, max.y, min.z
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6: min.x, min.y, min.z
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7: max.x, min.y, min.z
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*/
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var vertices = this.geometry.attributes.position.array;
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vertices[ 0 ] = max.x; vertices[ 1 ] = max.y; vertices[ 2 ] = max.z;
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vertices[ 3 ] = min.x; vertices[ 4 ] = max.y; vertices[ 5 ] = max.z;
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vertices[ 6 ] = min.x; vertices[ 7 ] = max.y; vertices[ 8 ] = max.z;
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vertices[ 9 ] = min.x; vertices[ 10 ] = min.y; vertices[ 11 ] = max.z;
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vertices[ 12 ] = min.x; vertices[ 13 ] = min.y; vertices[ 14 ] = max.z;
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vertices[ 15 ] = max.x; vertices[ 16 ] = min.y; vertices[ 17 ] = max.z;
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vertices[ 18 ] = max.x; vertices[ 19 ] = min.y; vertices[ 20 ] = max.z;
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vertices[ 21 ] = max.x; vertices[ 22 ] = max.y; vertices[ 23 ] = max.z;
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//
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vertices[ 24 ] = max.x; vertices[ 25 ] = max.y; vertices[ 26 ] = min.z;
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vertices[ 27 ] = min.x; vertices[ 28 ] = max.y; vertices[ 29 ] = min.z;
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vertices[ 30 ] = min.x; vertices[ 31 ] = max.y; vertices[ 32 ] = min.z;
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vertices[ 33 ] = min.x; vertices[ 34 ] = min.y; vertices[ 35 ] = min.z;
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vertices[ 36 ] = min.x; vertices[ 37 ] = min.y; vertices[ 38 ] = min.z;
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vertices[ 39 ] = max.x; vertices[ 40 ] = min.y; vertices[ 41 ] = min.z;
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vertices[ 42 ] = max.x; vertices[ 43 ] = min.y; vertices[ 44 ] = min.z;
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vertices[ 45 ] = max.x; vertices[ 46 ] = max.y; vertices[ 47 ] = min.z;
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//
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vertices[ 48 ] = max.x; vertices[ 49 ] = max.y; vertices[ 50 ] = max.z;
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vertices[ 51 ] = max.x; vertices[ 52 ] = max.y; vertices[ 53 ] = min.z;
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vertices[ 54 ] = min.x; vertices[ 55 ] = max.y; vertices[ 56 ] = max.z;
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vertices[ 57 ] = min.x; vertices[ 58 ] = max.y; vertices[ 59 ] = min.z;
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vertices[ 60 ] = min.x; vertices[ 61 ] = min.y; vertices[ 62 ] = max.z;
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vertices[ 63 ] = min.x; vertices[ 64 ] = min.y; vertices[ 65 ] = min.z;
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vertices[ 66 ] = max.x; vertices[ 67 ] = min.y; vertices[ 68 ] = max.z;
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vertices[ 69 ] = max.x; vertices[ 70 ] = min.y; vertices[ 71 ] = min.z;
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this.geometry.attributes.position.needsUpdate = true;
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this.geometry.computeBoundingSphere();
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this.matrix = object.matrixWorld;
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this.matrixAutoUpdate = false;
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};
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