h#instanceColor} to `true` after updating all the colors. * * @param {number} index - The instance index. * @param {Color} color - The instance color. * @return {InstancedMesh} A reference to this instanced mesh. */ setColorAt( index, color ) { if ( this.instanceColor === null ) { this.instanceColor = new InstancedBufferAttribute( new Float32Array( this.instanceMatrix.count * 3 ).fill( 1 ), 3 ); } color.toArray( this.instanceColor.array, index * 3 ); return this; } /** * Sets the given local transformation matrix to the defined instance. Make sure you set the `needsUpdate` flag of * {@link InstancedMesh#instanceMatrix} to `true` after updating all the matrices. * * @param {number} index - The instance index. * @param {Matrix4} matrix - The local transformation. * @return {InstancedMesh} A reference to this instanced mesh. */ setMatrixAt( index, matrix ) { matrix.toArray( this.instanceMatrix.array, index * 16 ); return this; } /** * Sets the morph target weights to the defined instance. Make sure you set the `needsUpdate` flag of * {@link InstancedMesh#morphTexture} to `true` after updating all the influences. * * @param {number} index - The instance index. * @param {Mesh} object - A mesh which `morphTargetInfluences` property containing the morph target weights * of a single instance. * @return {InstancedMesh} A reference to this instanced mesh. */ setMorphAt( index, object ) { const objectInfluences = object.morphTargetInfluences; const len = objectInfluences.length + 1; // morphBaseInfluence + all influences if ( this.morphTexture === null ) { this.morphTexture = new DataTexture( new Float32Array( len * this.count ), len, this.count, RedFormat, FloatType ); } const array = this.morphTexture.source.data.data; let morphInfluencesSum = 0; for ( let i = 0; i < objectInfluences.length; i ++ ) { morphInfluencesSum += objectInfluences[ i ]; } const morphBaseInfluence = this.geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum; const dataIndex = len * index; array[ dataIndex ] = morphBaseInfluence; array.set( objectInfluences, dataIndex + 1 ); return this; } updateMorphTargets() { } /** * Frees the GPU-related resources allocated by this instance. Call this * method whenever this instance is no longer used in your app. */ dispose() { super.dispose(); if ( this.morphTexture !== null ) { this.morphTexture.dispose(); this.morphTexture = null; } } } const _sphere$3 = /*@__PURE__*/ new Sphere(); const _defaultSpriteCenter = /*@__PURE__*/ new Vector2( 0.5, 0.5 ); const _vector$6 = /*@__PURE__*/ new Vector3(); /** * Frustums are used to determine what is inside the camera's field of view. * They help speed up the rendering process - objects which lie outside a camera's * frustum can safely be excluded from rendering. * * This class is mainly intended for use internally by a renderer. */ class Frustum { /** * Constructs a new frustum. * * @param {Plane} [p0] - The first plane that encloses the frustum. * @param {Plane} [p1] - The second plane that encloses the frustum. * @param {Plane} [p2] - The third plane that encloses the frustum. * @param {Plane} [p3] - The fourth plane that encloses the frustum. * @param {Plane} [p4] - The fifth plane that encloses the frustum. * @param {Plane} [p5] - The sixth plane that encloses the frustum. */ constructor( p0 = new Plane(), p1 = new Plane(), p2 = new Plane(), p3 = new Plane(), p4 = new Plane(), p5 = new Plane() ) { /** * This array holds the planes that enclose the frustum. * * @type {Array} */ this.planes = [ p0, p1, p2, p3, p4, p5 ]; } /** * Sets the frustum planes by copying the given planes. * * @param {Plane} [p0] - The first plane that encloses the frustum. * @param {Plane} [p1] - The second plane that encloses the frustum. * @param {Plane} [p2] - The third plane that encloses the frustum. * @param {Plane} [p3] - The fourth plane that encloses the frustum. * @param {Plane} [p4] - The fifth plane that encloses the frustum. * @param {Plane} [p5] - The sixth plane that encloses the frustum. * @return {Frustum} A reference to this frustum. */ set( p0, p1, p2, p3, p4, p5 ) { const planes = this.planes; planes[ 0 ].copy( p0 ); planes[ 1 ].copy( p1 ); planes[ 2 ].copy( p2 ); planes[ 3 ].copy( p3 ); planes[ 4 ].copy( p4 ); planes[ 5 ].copy( p5 ); return this; } /** * Copies the values of the given frustum to this instance. * * @param {Frustum} frustum - The frustum to copy. * @return {Frustum} A reference to this frustum. */ copy( frustum ) { const planes = this.planes; for ( let i = 0; i < 6; i ++ ) { planes[ i ].copy( frustum.planes[ i ] ); } return this; } /** * Sets the frustum planes from the given projection matrix. * * @param {Matrix4} m - The project