; if ( source.morphTargetInfluences !== undefined ) { this.morphTargetInfluences = source.morphTargetInfluences.slice(); } if ( source.morphTargetDictionary !== undefined ) { this.morphTargetDictionary = Object.assign( {}, source.morphTargetDictionary ); } this.material = Array.isArray( source.material ) ? source.material.slice() : source.material; this.geometry = source.geometry; return this; } /** * Sets the values of {@link Mesh#morphTargetDictionary} and {@link Mesh#morphTargetInfluences} * to make sure existing morph targets can influence this 3D object. */ updateMorphTargets() { const geometry = this.geometry; const morphAttributes = geometry.morphAttributes; const keys = Object.keys( morphAttributes ); if ( keys.length > 0 ) { const morphAttribute = morphAttributes[ keys[ 0 ] ]; if ( morphAttribute !== undefined ) { this.morphTargetInfluences = []; this.morphTargetDictionary = {}; for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) { const name = morphAttribute[ m ].name || String( m ); this.morphTargetInfluences.push( 0 ); this.morphTargetDictionary[ name ] = m; } } } } /** * Returns the local-space position of the vertex at the given index, taking into * account the current animation state of both morph targets and skinning. * * @param {number} index - The vertex index. * @param {Vector3} target - The target object that is used to store the method's result. * @return {Vector3} The vertex position in local space. */ getVertexPosition( index, target ) { const geometry = this.geometry; const position = geometry.attributes.position; const morphPosition = geometry.morphAttributes.position; const morphTargetsRelative = geometry.morphTargetsRelative; target.fromBufferAttribute( position, index ); const morphInfluences = this.morphTargetInfluences; if ( morphPosition && morphInfluences ) { _morphA.set( 0, 0, 0 ); for ( let i = 0, il = morphPosition.length; i < il; i ++ ) { const influence = morphInfluences[ i ]; const morphAttribute = morphPosition[ i ]; if ( influence === 0 ) continue; _tempA.fromBufferAttribute( morphAttribute, index ); if ( morphTargetsRelative ) { _morphA.addScaledVector( _tempA, influence ); } else { _morphA.addScaledVector( _tempA.sub( target ), influence ); } } target.add( _morphA ); } return target; } /** * Returns `true` if this mesh intersects the given frustum. * * @param {Frustum|FrustumArray} frustum - The frustum to test. * @return {boolean} Whether this mesh intersects the given frustum or not. */ intersectsFrustum( frustum ) { return frustum.intersectsObject( this ); } /** * Computes intersection points between a casted ray and this line. * * @param {Raycaster} raycaster - The raycaster. * @param {Array} intersects - The target array that holds the intersection points. */ raycast( raycaster, intersects ) { const geometry = this.geometry; const material = this.material; const matrixWorld = this.matrixWorld; if ( material === undefined ) return; // test with bounding sphere in world space if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere(); _sphere$6.copy( geometry.boundingSphere ); _sphere$6.applyMatrix4( matrixWorld ); // check distance from ray origin to bounding sphere _ray$3.copy( raycaster.ray ).recast( raycaster.near ); if ( _sphere$6.containsPoint( _ray$3.origin ) === false ) { if ( _ray$3.intersectSphere( _sphere$6, _sphereHitAt ) === null ) return; if ( _ray$3.origin.distanceToSquared( _sphereHitAt ) > ( raycaster.far - raycaster.near ) ** 2 ) return; } // convert ray to local space of mesh _inverseMatrix$3.copy( matrixWorld ).invert(); _ray$3.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$3 ); // test with bounding box in local space if ( geometry.boundingBox !== null ) { if ( _ray$3.intersectsBox( geometry.boundingBox ) === false ) return; } // test for intersections with geometry this._computeIntersections( raycaster, intersects, _ray$3 ); } _computeIntersections( raycaster, intersects, rayLocalSpace ) { let intersection; const geometry = this.geometry; const material = this.material; const index = geometry.index; const position = geometry.attributes.position; const uv = geometry.attributes.uv; const uv1 = geometry.attributes.uv1; const normal = geometry.attributes.normal; const groups = geometry.groups; const drawRange = geometry.drawRange; if ( index !== null ) { // indexed buffer geometry if ( Array.isArray( material ) ) { for ( let i = 0, il = groups.length; i < il; i ++ ) { const group = groups[ i ]; const groupMaterial = material[ group.materialIndex ]; const start = Math.max( group.start, drawRange.start ); const end = Math