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@@ -1,64 +1,36 @@
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/**
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* @author mrdoob / http://mrdoob.com/
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- * @author supereggbert / http://www.paulbrunt.co.uk/
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- * @author julianwa / https://github.com/julianwa
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*/
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THREE.Projector = function () {
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- var _object, _objectCount, _objectPool = [], _objectPoolLength = 0,
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- _vertex, _vertexCount, _vertexPool = [], _vertexPoolLength = 0,
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- _face, _faceCount, _facePool = [], _facePoolLength = 0,
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- _line, _lineCount, _linePool = [], _linePoolLength = 0,
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- _sprite, _spriteCount, _spritePool = [], _spritePoolLength = 0,
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-
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- _renderData = { objects: [], lights: [], elements: [] },
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-
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- _vA = new THREE.Vector3(),
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- _vB = new THREE.Vector3(),
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- _vC = new THREE.Vector3(),
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-
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- _vector3 = new THREE.Vector3(),
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- _vector4 = new THREE.Vector4(),
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-
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- _clipBox = new THREE.Box3( new THREE.Vector3( - 1, - 1, - 1 ), new THREE.Vector3( 1, 1, 1 ) ),
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- _boundingBox = new THREE.Box3(),
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- _points3 = new Array( 3 ),
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- _points4 = new Array( 4 ),
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-
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- _viewMatrix = new THREE.Matrix4(),
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- _viewProjectionMatrix = new THREE.Matrix4(),
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-
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- _modelMatrix,
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- _modelViewProjectionMatrix = new THREE.Matrix4(),
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+ this.projectVector = function ( vector, camera ) {
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- _normalMatrix = new THREE.Matrix3(),
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+ var viewProjectionMatrix = new THREE.Matrix4();
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- _frustum = new THREE.Frustum(),
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+ return function ( vector, camera ) {
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- _clippedVertex1PositionScreen = new THREE.Vector4(),
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- _clippedVertex2PositionScreen = new THREE.Vector4();
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+ camera.matrixWorldInverse.getInverse( camera.matrixWorld );
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- this.projectVector = function ( vector, camera ) {
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+ viewProjectionMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
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- camera.matrixWorldInverse.getInverse( camera.matrixWorld );
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+ return vector.applyProjection( viewProjectionMatrix );
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- _viewProjectionMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
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-
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- return vector.applyProjection( _viewProjectionMatrix );
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+ };
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- };
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+ }();
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this.unprojectVector = function () {
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var projectionMatrixInverse = new THREE.Matrix4();
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+ var viewProjectionMatrix = new THREE.Matrix4();
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return function ( vector, camera ) {
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projectionMatrixInverse.getInverse( camera.projectionMatrix );
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- _viewProjectionMatrix.multiplyMatrices( camera.matrixWorld, projectionMatrixInverse );
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+ viewProjectionMatrix.multiplyMatrices( camera.matrixWorld, projectionMatrixInverse );
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- return vector.applyProjection( _viewProjectionMatrix );
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+ return vector.applyProjection( viewProjectionMatrix );
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};
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@@ -80,784 +52,4 @@ THREE.Projector = function () {
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};
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- var RenderList = function () {
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-
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- var normals = [];
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- var uvs = [];
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-
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- var object = null;
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- var material = null;
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-
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- var normalMatrix = new THREE.Matrix3();
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-
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- var setObject = function ( value ) {
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-
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- object = value;
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- material = object.material;
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-
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- normalMatrix.getNormalMatrix( object.matrixWorld );
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-
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- normals.length = 0;
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- uvs.length = 0;
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-
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- };
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-
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- var projectVertex = function ( vertex ) {
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-
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- var position = vertex.position;
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- var positionWorld = vertex.positionWorld;
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- var positionScreen = vertex.positionScreen;
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-
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- positionWorld.copy( position ).applyMatrix4( _modelMatrix );
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- positionScreen.copy( positionWorld ).applyMatrix4( _viewProjectionMatrix );
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-
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- var invW = 1 / positionScreen.w;
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-
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- positionScreen.x *= invW;
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- positionScreen.y *= invW;
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- positionScreen.z *= invW;
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-
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- vertex.visible = positionScreen.x >= - 1 && positionScreen.x <= 1 &&
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- positionScreen.y >= - 1 && positionScreen.y <= 1 &&
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- positionScreen.z >= - 1 && positionScreen.z <= 1;
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-
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- };
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-
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- var pushVertex = function ( x, y, z ) {
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-
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- _vertex = getNextVertexInPool();
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- _vertex.position.set( x, y, z );
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-
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- projectVertex( _vertex );
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-
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- };
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-
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- var pushNormal = function ( x, y, z ) {
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-
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- normals.push( x, y, z );
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-
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- };
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-
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- var pushUv = function ( x, y ) {
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-
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- uvs.push( x, y );
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-
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- };
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-
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- var checkTriangleVisibility = function ( v1, v2, v3 ) {
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-
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- if ( v1.visible === true || v2.visible === true || v3.visible === true ) return true;
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-
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- _points3[ 0 ] = v1.positionScreen;
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- _points3[ 1 ] = v2.positionScreen;
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- _points3[ 2 ] = v3.positionScreen;
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-
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- return _clipBox.isIntersectionBox( _boundingBox.setFromPoints( _points3 ) );
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-
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- };
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-
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- var checkBackfaceCulling = function ( v1, v2, v3 ) {
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-
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- return ( ( v3.positionScreen.x - v1.positionScreen.x ) *
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- ( v2.positionScreen.y - v1.positionScreen.y ) -
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- ( v3.positionScreen.y - v1.positionScreen.y ) *
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- ( v2.positionScreen.x - v1.positionScreen.x ) ) < 0;
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-
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- };
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-
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- var pushLine = function ( a, b ) {
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-
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- var v1 = _vertexPool[ a ];
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- var v2 = _vertexPool[ b ];
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-
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- _line = getNextLineInPool();
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-
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- _line.id = object.id;
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- _line.v1.copy( v1 );
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- _line.v2.copy( v2 );
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- _line.z = ( v1.positionScreen.z + v2.positionScreen.z ) / 2;
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-
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- _line.material = object.material;
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-
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- _renderData.elements.push( _line );
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-
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- };
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-
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- var pushTriangle = function ( a, b, c ) {
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-
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- var v1 = _vertexPool[ a ];
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- var v2 = _vertexPool[ b ];
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- var v3 = _vertexPool[ c ];
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-
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- if ( checkTriangleVisibility( v1, v2, v3 ) === false ) return;
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-
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- if ( material.side === THREE.DoubleSide || checkBackfaceCulling( v1, v2, v3 ) === true ) {
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-
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- _face = getNextFaceInPool();
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-
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- _face.id = object.id;
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- _face.v1.copy( v1 );
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- _face.v2.copy( v2 );
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- _face.v3.copy( v3 );
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- _face.z = ( v1.positionScreen.z + v2.positionScreen.z + v3.positionScreen.z ) / 3;
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-
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- for ( var i = 0; i < 3; i ++ ) {
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-
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- var offset = arguments[ i ] * 3;
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- var normal = _face.vertexNormalsModel[ i ];
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-
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- normal.set( normals[ offset ], normals[ offset + 1 ], normals[ offset + 2 ] );
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- normal.applyMatrix3( normalMatrix ).normalize();
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-
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- var offset2 = arguments[ i ] * 2;
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-
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- var uv = _face.uvs[ i ];
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- uv.set( uvs[ offset2 ], uvs[ offset2 + 1 ] );
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-
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- }
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-
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- _face.vertexNormalsLength = 3;
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-
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- _face.material = object.material;
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-
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- _renderData.elements.push( _face );
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-
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- }
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-
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- };
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-
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- return {
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- setObject: setObject,
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- projectVertex: projectVertex,
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- checkTriangleVisibility: checkTriangleVisibility,
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- checkBackfaceCulling: checkBackfaceCulling,
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- pushVertex: pushVertex,
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- pushNormal: pushNormal,
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- pushUv: pushUv,
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- pushLine: pushLine,
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- pushTriangle: pushTriangle
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- }
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-
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- };
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-
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- var renderList = new RenderList();
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-
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- this.projectScene = function ( scene, camera, sortObjects, sortElements ) {
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-
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- _faceCount = 0;
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- _lineCount = 0;
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- _spriteCount = 0;
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-
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- _renderData.elements.length = 0;
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-
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- if ( scene.autoUpdate === true ) scene.updateMatrixWorld();
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- if ( camera.parent === undefined ) camera.updateMatrixWorld();
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-
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- _viewMatrix.copy( camera.matrixWorldInverse.getInverse( camera.matrixWorld ) );
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- _viewProjectionMatrix.multiplyMatrices( camera.projectionMatrix, _viewMatrix );
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-
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- _frustum.setFromMatrix( _viewProjectionMatrix );
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-
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- //
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-
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- _objectCount = 0;
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-
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- _renderData.objects.length = 0;
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- _renderData.lights.length = 0;
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-
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- scene.traverseVisible( function ( object ) {
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-
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- if ( object instanceof THREE.Light ) {
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-
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- _renderData.lights.push( object );
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-
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- } else if ( object instanceof THREE.Mesh || object instanceof THREE.Line || object instanceof THREE.Sprite ) {
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-
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- if ( object.material.visible === false ) return;
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-
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- if ( object.frustumCulled === false || _frustum.intersectsObject( object ) === true ) {
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-
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- _object = getNextObjectInPool();
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- _object.id = object.id;
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- _object.object = object;
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-
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- if ( object.renderDepth !== null ) {
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-
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- _object.z = object.renderDepth;
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-
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- } else {
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-
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- _vector3.setFromMatrixPosition( object.matrixWorld );
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- _vector3.applyProjection( _viewProjectionMatrix );
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- _object.z = _vector3.z;
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-
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- }
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-
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- _renderData.objects.push( _object );
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-
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- }
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-
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- }
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-
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- } );
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-
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- if ( sortObjects === true ) {
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-
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- _renderData.objects.sort( painterSort );
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-
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- }
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-
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- //
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-
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- for ( var o = 0, ol = _renderData.objects.length; o < ol; o ++ ) {
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-
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- var object = _renderData.objects[ o ].object;
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- var geometry = object.geometry;
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-
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- renderList.setObject( object );
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-
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- _modelMatrix = object.matrixWorld;
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-
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- _vertexCount = 0;
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-
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- if ( object instanceof THREE.Mesh ) {
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-
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- if ( geometry instanceof THREE.BufferGeometry ) {
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-
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- var attributes = geometry.attributes;
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- var offsets = geometry.offsets;
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-
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- if ( attributes.position === undefined ) continue;
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-
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- var positions = attributes.position.array;
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-
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- for ( var i = 0, l = positions.length; i < l; i += 3 ) {
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-
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- renderList.pushVertex( positions[ i ], positions[ i + 1 ], positions[ i + 2 ] );
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-
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- }
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-
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- if ( attributes.normal !== undefined ) {
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-
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- var normals = attributes.normal.array;
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-
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- for ( var i = 0, l = normals.length; i < l; i += 3 ) {
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-
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- renderList.pushNormal( normals[ i ], normals[ i + 1 ], normals[ i + 2 ] );
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-
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- }
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-
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- }
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-
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- if ( attributes.uv !== undefined ) {
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-
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- var uvs = attributes.uv.array;
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-
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- for ( var i = 0, l = uvs.length; i < l; i += 2 ) {
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-
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- renderList.pushUv( uvs[ i ], uvs[ i + 1 ] );
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-
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- }
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-
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- }
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-
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- if ( attributes.index !== undefined ) {
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-
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- var indices = attributes.index.array;
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-
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- if ( offsets.length > 0 ) {
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-
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- for ( var o = 0; o < offsets.length; o ++ ) {
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-
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- var offset = offsets[ o ];
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- var index = offset.index;
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-
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- for ( var i = offset.start, l = offset.start + offset.count; i < l; i += 3 ) {
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-
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- renderList.pushTriangle( indices[ i ] + index, indices[ i + 1 ] + index, indices[ i + 2 ] + index );
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-
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- }
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-
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- }
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-
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- } else {
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-
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- for ( var i = 0, l = indices.length; i < l; i += 3 ) {
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-
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- renderList.pushTriangle( indices[ i ], indices[ i + 1 ], indices[ i + 2 ] );
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-
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- }
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-
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- }
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-
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- } else {
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-
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- for ( var i = 0, l = positions.length / 3; i < l; i += 3 ) {
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-
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- renderList.pushTriangle( i, i + 1, i + 2 );
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-
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- }
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-
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- }
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-
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- } else if ( geometry instanceof THREE.Geometry ) {
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-
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- var vertices = geometry.vertices;
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- var faces = geometry.faces;
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- var faceVertexUvs = geometry.faceVertexUvs[ 0 ];
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-
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- _normalMatrix.getNormalMatrix( _modelMatrix );
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-
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- var isFaceMaterial = object.material instanceof THREE.MeshFaceMaterial;
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- var objectMaterials = isFaceMaterial === true ? object.material : null;
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-
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- for ( var v = 0, vl = vertices.length; v < vl; v ++ ) {
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-
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- var vertex = vertices[ v ];
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- renderList.pushVertex( vertex.x, vertex.y, vertex.z );
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-
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- }
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-
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- for ( var f = 0, fl = faces.length; f < fl; f ++ ) {
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-
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- var face = faces[ f ];
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-
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- var material = isFaceMaterial === true
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- ? objectMaterials.materials[ face.materialIndex ]
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- : object.material;
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-
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- if ( material === undefined ) continue;
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-
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- var side = material.side;
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-
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- var v1 = _vertexPool[ face.a ];
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- var v2 = _vertexPool[ face.b ];
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- var v3 = _vertexPool[ face.c ];
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-
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- if ( material.morphTargets === true ) {
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-
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- var morphTargets = geometry.morphTargets;
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- var morphInfluences = object.morphTargetInfluences;
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-
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- var v1p = v1.position;
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- var v2p = v2.position;
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- var v3p = v3.position;
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|
-
|
|
|
- _vA.set( 0, 0, 0 );
|
|
|
- _vB.set( 0, 0, 0 );
|
|
|
- _vC.set( 0, 0, 0 );
|
|
|
-
|
|
|
- for ( var t = 0, tl = morphTargets.length; t < tl; t ++ ) {
|
|
|
-
|
|
|
- var influence = morphInfluences[ t ];
|
|
|
-
|
|
|
- if ( influence === 0 ) continue;
|
|
|
-
|
|
|
- var targets = morphTargets[ t ].vertices;
|
|
|
-
|
|
|
- _vA.x += ( targets[ face.a ].x - v1p.x ) * influence;
|
|
|
- _vA.y += ( targets[ face.a ].y - v1p.y ) * influence;
|
|
|
- _vA.z += ( targets[ face.a ].z - v1p.z ) * influence;
|
|
|
-
|
|
|
- _vB.x += ( targets[ face.b ].x - v2p.x ) * influence;
|
|
|
- _vB.y += ( targets[ face.b ].y - v2p.y ) * influence;
|
|
|
- _vB.z += ( targets[ face.b ].z - v2p.z ) * influence;
|
|
|
-
|
|
|
- _vC.x += ( targets[ face.c ].x - v3p.x ) * influence;
|
|
|
- _vC.y += ( targets[ face.c ].y - v3p.y ) * influence;
|
|
|
- _vC.z += ( targets[ face.c ].z - v3p.z ) * influence;
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- v1.position.add( _vA );
|
|
|
- v2.position.add( _vB );
|
|
|
- v3.position.add( _vC );
|
|
|
-
|
|
|
- renderList.projectVertex( v1 );
|
|
|
- renderList.projectVertex( v2 );
|
|
|
- renderList.projectVertex( v3 );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- if ( renderList.checkTriangleVisibility( v1, v2, v3 ) === false ) continue;
|
|
|
-
|
|
|
- var visible = renderList.checkBackfaceCulling( v1, v2, v3 );
|
|
|
-
|
|
|
- if ( side !== THREE.DoubleSide ) {
|
|
|
- if ( side === THREE.FrontSide && visible === false ) continue;
|
|
|
- if ( side === THREE.BackSide && visible === true ) continue;
|
|
|
- }
|
|
|
-
|
|
|
- _face = getNextFaceInPool();
|
|
|
-
|
|
|
- _face.id = object.id;
|
|
|
- _face.v1.copy( v1 );
|
|
|
- _face.v2.copy( v2 );
|
|
|
- _face.v3.copy( v3 );
|
|
|
-
|
|
|
- _face.normalModel.copy( face.normal );
|
|
|
-
|
|
|
- if ( visible === false && ( side === THREE.BackSide || side === THREE.DoubleSide ) ) {
|
|
|
-
|
|
|
- _face.normalModel.negate();
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- _face.normalModel.applyMatrix3( _normalMatrix ).normalize();
|
|
|
-
|
|
|
- var faceVertexNormals = face.vertexNormals;
|
|
|
-
|
|
|
- for ( var n = 0, nl = Math.min( faceVertexNormals.length, 3 ); n < nl; n ++ ) {
|
|
|
-
|
|
|
- var normalModel = _face.vertexNormalsModel[ n ];
|
|
|
- normalModel.copy( faceVertexNormals[ n ] );
|
|
|
-
|
|
|
- if ( visible === false && ( side === THREE.BackSide || side === THREE.DoubleSide ) ) {
|
|
|
-
|
|
|
- normalModel.negate();
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- normalModel.applyMatrix3( _normalMatrix ).normalize();
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- _face.vertexNormalsLength = faceVertexNormals.length;
|
|
|
-
|
|
|
- var vertexUvs = faceVertexUvs[ f ];
|
|
|
-
|
|
|
- if ( vertexUvs !== undefined ) {
|
|
|
-
|
|
|
- for ( var u = 0; u < 3; u ++ ) {
|
|
|
-
|
|
|
- _face.uvs[ u ].copy( vertexUvs[ u ] );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- _face.color = face.color;
|
|
|
- _face.material = material;
|
|
|
-
|
|
|
- _face.z = ( v1.positionScreen.z + v2.positionScreen.z + v3.positionScreen.z ) / 3;
|
|
|
-
|
|
|
- _renderData.elements.push( _face );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- } else if ( object instanceof THREE.Line ) {
|
|
|
-
|
|
|
- if ( geometry instanceof THREE.BufferGeometry ) {
|
|
|
-
|
|
|
- var attributes = geometry.attributes;
|
|
|
-
|
|
|
- if ( attributes.position !== undefined ) {
|
|
|
-
|
|
|
- var positions = attributes.position.array;
|
|
|
-
|
|
|
- for ( var i = 0, l = positions.length; i < l; i += 3 ) {
|
|
|
-
|
|
|
- renderList.pushVertex( positions[ i ], positions[ i + 1 ], positions[ i + 2 ] );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- if ( attributes.index !== undefined ) {
|
|
|
-
|
|
|
- var indices = attributes.index.array;
|
|
|
-
|
|
|
- for ( var i = 0, l = indices.length; i < l; i += 2 ) {
|
|
|
-
|
|
|
- renderList.pushLine( indices[ i ], indices[ i + 1 ] );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- } else {
|
|
|
-
|
|
|
- var step = object.type === THREE.LinePieces ? 2 : 1;
|
|
|
-
|
|
|
- for ( var i = 0, l = ( positions.length / 3 ) - 1; i < l; i += step ) {
|
|
|
-
|
|
|
- renderList.pushLine( i, i + 1 );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- } else if ( geometry instanceof THREE.Geometry ) {
|
|
|
-
|
|
|
- _modelViewProjectionMatrix.multiplyMatrices( _viewProjectionMatrix, _modelMatrix );
|
|
|
-
|
|
|
- var vertices = object.geometry.vertices;
|
|
|
-
|
|
|
- if ( vertices.length === 0 ) continue;
|
|
|
-
|
|
|
- v1 = getNextVertexInPool();
|
|
|
- v1.positionScreen.copy( vertices[ 0 ] ).applyMatrix4( _modelViewProjectionMatrix );
|
|
|
-
|
|
|
- // Handle LineStrip and LinePieces
|
|
|
- var step = object.type === THREE.LinePieces ? 2 : 1;
|
|
|
-
|
|
|
- for ( var v = 1, vl = vertices.length; v < vl; v ++ ) {
|
|
|
-
|
|
|
- v1 = getNextVertexInPool();
|
|
|
- v1.positionScreen.copy( vertices[ v ] ).applyMatrix4( _modelViewProjectionMatrix );
|
|
|
-
|
|
|
- if ( ( v + 1 ) % step > 0 ) continue;
|
|
|
-
|
|
|
- v2 = _vertexPool[ _vertexCount - 2 ];
|
|
|
-
|
|
|
- _clippedVertex1PositionScreen.copy( v1.positionScreen );
|
|
|
- _clippedVertex2PositionScreen.copy( v2.positionScreen );
|
|
|
-
|
|
|
- if ( clipLine( _clippedVertex1PositionScreen, _clippedVertex2PositionScreen ) === true ) {
|
|
|
-
|
|
|
- // Perform the perspective divide
|
|
|
- _clippedVertex1PositionScreen.multiplyScalar( 1 / _clippedVertex1PositionScreen.w );
|
|
|
- _clippedVertex2PositionScreen.multiplyScalar( 1 / _clippedVertex2PositionScreen.w );
|
|
|
-
|
|
|
- _line = getNextLineInPool();
|
|
|
-
|
|
|
- _line.id = object.id;
|
|
|
- _line.v1.positionScreen.copy( _clippedVertex1PositionScreen );
|
|
|
- _line.v2.positionScreen.copy( _clippedVertex2PositionScreen );
|
|
|
-
|
|
|
- _line.z = Math.max( _clippedVertex1PositionScreen.z, _clippedVertex2PositionScreen.z );
|
|
|
-
|
|
|
- _line.material = object.material;
|
|
|
-
|
|
|
- if ( object.material.vertexColors === THREE.VertexColors ) {
|
|
|
-
|
|
|
- _line.vertexColors[ 0 ].copy( object.geometry.colors[ v ] );
|
|
|
- _line.vertexColors[ 1 ].copy( object.geometry.colors[ v - 1 ] );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- _renderData.elements.push( _line );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- } else if ( object instanceof THREE.Sprite ) {
|
|
|
-
|
|
|
- _vector4.set( _modelMatrix.elements[ 12 ], _modelMatrix.elements[ 13 ], _modelMatrix.elements[ 14 ], 1 );
|
|
|
- _vector4.applyMatrix4( _viewProjectionMatrix );
|
|
|
-
|
|
|
- var invW = 1 / _vector4.w;
|
|
|
-
|
|
|
- _vector4.z *= invW;
|
|
|
-
|
|
|
- if ( _vector4.z >= - 1 && _vector4.z <= 1 ) {
|
|
|
-
|
|
|
- _sprite = getNextSpriteInPool();
|
|
|
- _sprite.id = object.id;
|
|
|
- _sprite.x = _vector4.x * invW;
|
|
|
- _sprite.y = _vector4.y * invW;
|
|
|
- _sprite.z = _vector4.z;
|
|
|
- _sprite.object = object;
|
|
|
-
|
|
|
- _sprite.rotation = object.rotation;
|
|
|
-
|
|
|
- _sprite.scale.x = object.scale.x * Math.abs( _sprite.x - ( _vector4.x + camera.projectionMatrix.elements[ 0 ] ) / ( _vector4.w + camera.projectionMatrix.elements[ 12 ] ) );
|
|
|
- _sprite.scale.y = object.scale.y * Math.abs( _sprite.y - ( _vector4.y + camera.projectionMatrix.elements[ 5 ] ) / ( _vector4.w + camera.projectionMatrix.elements[ 13 ] ) );
|
|
|
-
|
|
|
- _sprite.material = object.material;
|
|
|
-
|
|
|
- _renderData.elements.push( _sprite );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- if ( sortElements === true ) {
|
|
|
-
|
|
|
- _renderData.elements.sort( painterSort );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- return _renderData;
|
|
|
-
|
|
|
- };
|
|
|
-
|
|
|
- // Pools
|
|
|
-
|
|
|
- function getNextObjectInPool() {
|
|
|
-
|
|
|
- if ( _objectCount === _objectPoolLength ) {
|
|
|
-
|
|
|
- var object = new THREE.RenderableObject();
|
|
|
- _objectPool.push( object );
|
|
|
- _objectPoolLength ++;
|
|
|
- _objectCount ++;
|
|
|
- return object;
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- return _objectPool[ _objectCount ++ ];
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- function getNextVertexInPool() {
|
|
|
-
|
|
|
- if ( _vertexCount === _vertexPoolLength ) {
|
|
|
-
|
|
|
- var vertex = new THREE.RenderableVertex();
|
|
|
- _vertexPool.push( vertex );
|
|
|
- _vertexPoolLength ++;
|
|
|
- _vertexCount ++;
|
|
|
- return vertex;
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- return _vertexPool[ _vertexCount ++ ];
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- function getNextFaceInPool() {
|
|
|
-
|
|
|
- if ( _faceCount === _facePoolLength ) {
|
|
|
-
|
|
|
- var face = new THREE.RenderableFace();
|
|
|
- _facePool.push( face );
|
|
|
- _facePoolLength ++;
|
|
|
- _faceCount ++;
|
|
|
- return face;
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- return _facePool[ _faceCount ++ ];
|
|
|
-
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- function getNextLineInPool() {
|
|
|
-
|
|
|
- if ( _lineCount === _linePoolLength ) {
|
|
|
-
|
|
|
- var line = new THREE.RenderableLine();
|
|
|
- _linePool.push( line );
|
|
|
- _linePoolLength ++;
|
|
|
- _lineCount ++
|
|
|
- return line;
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- return _linePool[ _lineCount ++ ];
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- function getNextSpriteInPool() {
|
|
|
-
|
|
|
- if ( _spriteCount === _spritePoolLength ) {
|
|
|
-
|
|
|
- var sprite = new THREE.RenderableSprite();
|
|
|
- _spritePool.push( sprite );
|
|
|
- _spritePoolLength ++;
|
|
|
- _spriteCount ++
|
|
|
- return sprite;
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- return _spritePool[ _spriteCount ++ ];
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- //
|
|
|
-
|
|
|
- function painterSort( a, b ) {
|
|
|
-
|
|
|
- if ( a.z !== b.z ) {
|
|
|
-
|
|
|
- return b.z - a.z;
|
|
|
-
|
|
|
- } else if ( a.id !== b.id ) {
|
|
|
-
|
|
|
- return a.id - b.id;
|
|
|
-
|
|
|
- } else {
|
|
|
-
|
|
|
- return 0;
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- function clipLine( s1, s2 ) {
|
|
|
-
|
|
|
- var alpha1 = 0, alpha2 = 1,
|
|
|
-
|
|
|
- // Calculate the boundary coordinate of each vertex for the near and far clip planes,
|
|
|
- // Z = -1 and Z = +1, respectively.
|
|
|
- bc1near = s1.z + s1.w,
|
|
|
- bc2near = s2.z + s2.w,
|
|
|
- bc1far = - s1.z + s1.w,
|
|
|
- bc2far = - s2.z + s2.w;
|
|
|
-
|
|
|
- if ( bc1near >= 0 && bc2near >= 0 && bc1far >= 0 && bc2far >= 0 ) {
|
|
|
-
|
|
|
- // Both vertices lie entirely within all clip planes.
|
|
|
- return true;
|
|
|
-
|
|
|
- } else if ( ( bc1near < 0 && bc2near < 0 ) || ( bc1far < 0 && bc2far < 0 ) ) {
|
|
|
-
|
|
|
- // Both vertices lie entirely outside one of the clip planes.
|
|
|
- return false;
|
|
|
-
|
|
|
- } else {
|
|
|
-
|
|
|
- // The line segment spans at least one clip plane.
|
|
|
-
|
|
|
- if ( bc1near < 0 ) {
|
|
|
-
|
|
|
- // v1 lies outside the near plane, v2 inside
|
|
|
- alpha1 = Math.max( alpha1, bc1near / ( bc1near - bc2near ) );
|
|
|
-
|
|
|
- } else if ( bc2near < 0 ) {
|
|
|
-
|
|
|
- // v2 lies outside the near plane, v1 inside
|
|
|
- alpha2 = Math.min( alpha2, bc1near / ( bc1near - bc2near ) );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- if ( bc1far < 0 ) {
|
|
|
-
|
|
|
- // v1 lies outside the far plane, v2 inside
|
|
|
- alpha1 = Math.max( alpha1, bc1far / ( bc1far - bc2far ) );
|
|
|
-
|
|
|
- } else if ( bc2far < 0 ) {
|
|
|
-
|
|
|
- // v2 lies outside the far plane, v2 inside
|
|
|
- alpha2 = Math.min( alpha2, bc1far / ( bc1far - bc2far ) );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- if ( alpha2 < alpha1 ) {
|
|
|
-
|
|
|
- // The line segment spans two boundaries, but is outside both of them.
|
|
|
- // (This can't happen when we're only clipping against just near/far but good
|
|
|
- // to leave the check here for future usage if other clip planes are added.)
|
|
|
- return false;
|
|
|
-
|
|
|
- } else {
|
|
|
-
|
|
|
- // Update the s1 and s2 vertices to match the clipped line segment.
|
|
|
- s1.lerp( s2, alpha1 );
|
|
|
- s2.lerp( s1, 1 - alpha2 );
|
|
|
-
|
|
|
- return true;
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
};
|