Object3D: matrixNeedsUpdate and matrix/orientation optimizations

docs/api/ar/core/Object3D.html

@@ -82,6 +82,13 @@ <h3>[property:Boolean matrixAutoUpdate]</h3>
 			quaternion) والحجم في كل إطار وأيضًا يعيد حساب خصائص matrixWorld
 			. الافتراضي هو [page:Object3D.DEFAULT_MATRIX_AUTO_UPDATE] (true).
 		</p>
+
+		<h3>[property:Boolean matrixNeedsUpdate]</h3>
+		<p>
+			When this is set, it calculates the matrix of position, (rotation or
+			quaternion) and scale in that frame, matrixWorld for itself and descendants,
+			and resets this property to false. Default is `false`.
+		</p>
 
 		<h3>[property:Matrix4 matrixWorld]</h3>
 		<p>

docs/api/en/core/Object3D.html

@@ -83,6 +83,13 @@ <h3>[property:Boolean matrixAutoUpdate]</h3>
 			property. Default is [page:Object3D.DEFAULT_MATRIX_AUTO_UPDATE] (true).
 		</p>
 
+		<h3>[property:Boolean matrixNeedsUpdate]</h3>
+		<p>
+			When this is set, it calculates the matrix of position, (rotation or
+			quaternion) and scale in that frame, matrixWorld for itself and descendants,
+			and resets this property to false. Default is `false`.
+		</p>
+
 		<h3>[property:Matrix4 matrixWorld]</h3>
 		<p>
 			The global transform of the object. If the Object3D has no parent, then

docs/api/it/core/Object3D.html

@@ -82,6 +82,13 @@ <h3>[property:Boolean matrixAutoUpdate]</h3>
       ridimensiona ogni fotogramma ed inoltre ricalcola la  proprietà matrixWorld. L'impostazione predefinita è [page:Object3D.DEFAULT_MATRIX_AUTO_UPDATE] (true).
 		</p>
 
+		<h3>[property:Boolean matrixNeedsUpdate]</h3>
+		<p>
+			When this is set, it calculates the matrix of position, (rotation or
+			quaternion) and scale in that frame, matrixWorld for itself and descendants,
+			and resets this property to false. Default is `false`.
+		</p>
+
 		<h3>[property:Matrix4 matrixWorld]</h3>
 		<p>
       La trasformazione globale dell'oggetto. Se l'Object3D non ha un genitore, è identico al [page:.matrix] della trasformazione locale.

docs/api/ko/core/Object3D.html

@@ -78,6 +78,13 @@ <h3>[property:Boolean matrixAutoUpdate]</h3>
 		기본값은 [page:Object3D.DEFAULT_MATRIX_AUTO_UPDATE] (true)입니다.
 		</p>
 
+		<h3>[property:Boolean matrixNeedsUpdate]</h3>
+		<p>
+			When this is set, it calculates the matrix of position, (rotation or
+			quaternion) and scale in that frame, matrixWorld for itself and descendants,
+			and resets this property to false. Default is `false`.
+		</p>
+
 		<h3>[property:Matrix4 matrixWorld]</h3>
 		<p>
 		객체의 글로벌 변형입니다. Object3D가 부모를 가지고 있지 않다면, 로컬 변형 [page:.matrix]와 동일합니다.

docs/api/zh/core/Object3D.html

@@ -74,6 +74,13 @@ <h3>[property:Boolean matrixAutoUpdate]</h3>
 		当这个属性设置了之后，它将计算每一帧的位移、旋转（四元变换）和缩放矩阵，并重新计算matrixWorld属性。默认值是[page:Object3D.DEFAULT_MATRIX_AUTO_UPDATE] (true)。
 	</p>
 
+	<h3>[property:Boolean matrixNeedsUpdate]</h3>
+	<p>
+		When this is set, it calculates the matrix of position, (rotation or
+		quaternion) and scale in that frame, matrixWorld for itself and descendants,
+		and resets this property to false. Default is `false`.
+	</p>
+
 	<h3>[property:Matrix4 matrixWorld]</h3>
 	<p>
 		物体的世界变换。若这个Object3D没有父级，则它将和local transform [page:.matrix]（局部变换矩阵）相同。

src/core/Object3D.js

@@ -28,6 +28,59 @@ const _removedEvent = { type: 'removed' };
 const _childaddedEvent = { type: 'childadded', child: null };
 const _childremovedEvent = { type: 'childremoved', child: null };
 
+function listenToProperties( object, properties, onReadCallback, onWriteCallback ) {
+
+	for ( let i = 0; i < properties.length; i ++ ) {
+
+		const property = properties[ i ];
+		let _value = object[ property ];
+
+		Object.defineProperty( object, property, {
+
+			get() {
+
+				if ( onReadCallback ) onReadCallback();
+
+				return _value;
+
+			},
+			set( value ) {
+
+				_value = value;
+
+				if ( onWriteCallback ) onWriteCallback();
+
+			}
+
+		} );
+
+	}
+
+}
+
+function listenToMethods( object, onChangeCallback ) {
+
+	const properties = Object.getOwnPropertyNames( object.constructor.prototype );
+
+	for ( let i = 0; i < properties.length; i ++ ) {
+
+		const property = properties[ i ];
+		const value = object[ property ];
+
+		if ( property === 'constructor' || typeof value !== 'function' ) continue;
+
+		object[ property ] = function () {
+
+			onChangeCallback();
+
+			return value.apply( this, arguments );
+
+		};
+
+	}
+
+}
+
 class Object3D extends EventDispatcher {
 
 	constructor() {
@@ -53,20 +106,68 @@ class Object3D extends EventDispatcher {
 		const quaternion = new Quaternion();
 		const scale = new Vector3( 1, 1, 1 );
 
-		function onRotationChange() {
+		const matrix = new Matrix4();
+		const matrixWorld = new Matrix4();
+
+		const self = this;
+		let rotationNeedsUpdate = false;
+		let quaternionNeedsUpdate = false;
 
-			quaternion.setFromEuler( rotation, false );
+		function onWrite() {
+
+			self.matrixNeedsUpdate = true;
 
 		}
 
-		function onQuaternionChange() {
+		function onRotationWrite() {
 
-			rotation.setFromQuaternion( quaternion, undefined, false );
+			self.matrixNeedsUpdate = true;
+			rotationNeedsUpdate = true;
 
 		}
 
-		rotation._onChange( onRotationChange );
-		quaternion._onChange( onQuaternionChange );
+		function onRotationRead() {
+
+			if ( quaternionNeedsUpdate === true ) {
+
+				quaternionNeedsUpdate = false;
+				rotation.setFromQuaternion( quaternion, undefined );
+				rotationNeedsUpdate = false;
+
+			}
+
+		}
+
+		function onQuaternionWrite() {
+
+			self.matrixNeedsUpdate = true;
+			quaternionNeedsUpdate = true;
+
+		}
+
+		function onQuaternionRead() {
+
+			if ( rotationNeedsUpdate === true ) {
+
+				rotationNeedsUpdate = false;
+				quaternion.setFromEuler( rotation );
+				quaternionNeedsUpdate = false;
+
+			}
+
+		}
+
+		function onMatrixChange() {
+
+			self.matrixWorldNeedsUpdate = true;
+
+		}
+
+		listenToProperties( position, [ 'x', 'y', 'z' ], undefined, onWrite );
+		listenToProperties( rotation, [ 'x', 'y', 'z', 'order' ], onRotationRead, onRotationWrite );
+		listenToProperties( quaternion, [ 'x', 'y', 'z', 'w' ], onQuaternionRead, onQuaternionWrite );
+		listenToProperties( scale, [ 'x', 'y', 'z' ], undefined, onWrite );
+		listenToMethods( matrix, onMatrixChange );
 
 		Object.defineProperties( this, {
 			position: {
@@ -97,12 +198,13 @@ class Object3D extends EventDispatcher {
 			}
 		} );
 
-		this.matrix = new Matrix4();
-		this.matrixWorld = new Matrix4();
+		this.matrix = matrix;
+		this.matrixWorld = matrixWorld;
 
 		this.matrixAutoUpdate = Object3D.DEFAULT_MATRIX_AUTO_UPDATE;
 
 		this.matrixWorldAutoUpdate = Object3D.DEFAULT_MATRIX_WORLD_AUTO_UPDATE; // checked by the renderer
+		this.matrixNeedsUpdate = false;
 		this.matrixWorldNeedsUpdate = false;
 
 		this.layers = new Layers();
@@ -577,9 +679,13 @@ class Object3D extends EventDispatcher {
 
 	updateMatrix() {
 
-		this.matrix.compose( this.position, this.quaternion, this.scale );
+		if ( this.matrixNeedsUpdate === true ) {
+
+			this.matrix.compose( this.position, this.quaternion, this.scale );
+			this.matrixNeedsUpdate = false;
+			this.matrixWorldNeedsUpdate = true;
 
-		this.matrixWorldNeedsUpdate = true;
+		}
 
 	}
 
@@ -985,6 +1091,7 @@ class Object3D extends EventDispatcher {
 		this.matrixAutoUpdate = source.matrixAutoUpdate;
 
 		this.matrixWorldAutoUpdate = source.matrixWorldAutoUpdate;
+		this.matrixNeedsUpdate = source.matrixNeedsUpdate;
 		this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;
 
 		this.layers.mask = source.layers.mask;

src/helpers/CameraHelper.js

@@ -107,8 +107,8 @@ class CameraHelper extends LineSegments {
 		this.camera = camera;
 		if ( this.camera.updateProjectionMatrix ) this.camera.updateProjectionMatrix();
 
-		this.matrix = camera.matrixWorld;
-		this.matrixAutoUpdate = false;
+		this.matrixWorld = camera.matrixWorld;
+		this.matrixWorldAutoUpdate = false;
 
 		this.pointMap = pointMap;
 

src/helpers/DirectionalLightHelper.js

@@ -17,8 +17,8 @@ class DirectionalLightHelper extends Object3D {
 
 		this.light = light;
 
-		this.matrix = light.matrixWorld;
-		this.matrixAutoUpdate = false;
+		this.matrixWorld = light.matrixWorld;
+		this.matrixWorldAutoUpdate = false;
 
 		this.color = color;
 

src/helpers/HemisphereLightHelper.js

@@ -18,8 +18,8 @@ class HemisphereLightHelper extends Object3D {
 
 		this.light = light;
 
-		this.matrix = light.matrixWorld;
-		this.matrixAutoUpdate = false;
+		this.matrixWorld = light.matrixWorld;
+		this.matrixWorldAutoUpdate = false;
 
 		this.color = color;
 

src/helpers/PointLightHelper.js

@@ -17,8 +17,8 @@ class PointLightHelper extends Mesh {
 
 		this.type = 'PointLightHelper';
 
-		this.matrix = this.light.matrixWorld;
-		this.matrixAutoUpdate = false;
+		this.matrixWorld = this.light.matrixWorld;
+		this.matrixWorldAutoUpdate = false;
 
 		this.update();
 

src/helpers/SkeletonHelper.js

@@ -54,8 +54,8 @@ class SkeletonHelper extends LineSegments {
 		this.root = object;
 		this.bones = bones;
 
-		this.matrix = object.matrixWorld;
-		this.matrixAutoUpdate = false;
+		this.matrixWorld = object.matrixWorld;
+		this.matrixWorldAutoUpdate = false;
 
 	}
 

src/loaders/ObjectLoader.js

@@ -1015,6 +1015,7 @@ class ObjectLoader extends Loader {
 
 			if ( data.matrixAutoUpdate !== undefined ) object.matrixAutoUpdate = data.matrixAutoUpdate;
 			if ( object.matrixAutoUpdate ) object.matrix.decompose( object.position, object.quaternion, object.scale );
+			object.matrixNeedsUpdate = false;
 
 		} else {