transform组价增加逆矩阵属性

src/base/InteractComponent.ts

@@ -120,11 +120,8 @@ export default class InteractComponent extends ScillaComponent {
 	 * @param e
 	 */
 	hitTest(e) {
-		const matrix = this.transform.getMatrix();
-		const invertMatrix = this.invertMatrix;
-		invertMatrix.copyFrom(matrix);
-		invertMatrix.invert();
-		invertMatrix.transformPoint(e.x, e.y, this.localPos);
+		const matrix = this.transform.getMatrix(false, true);
+		matrix.transformPoint(e.x, e.y, this.localPos);
 
 		let result = false;
 		const renderers = this.entity.getComponents(Renderer);

src/base/Transform.ts

@@ -32,6 +32,11 @@ export default class Transform extends ScillaComponent {
 	@dirtyFieldTrigger
 	position: Vector2D = new Vector2D(0, 0);
 
+	/**
+	 * 全局坐标
+	 */
+	private _globalPosition: Vector2D = new Vector2D(0, 0);
+
 	/**
 	 * 节点透明度
 	 */
@@ -73,6 +78,7 @@ export default class Transform extends ScillaComponent {
 
 	protected _localMatrix: Matrix = Matrix.create();
 	protected _globalMatrix: Matrix = Matrix.create();
+	protected _globalInvertMatrix: Matrix = Matrix.create();
 	protected _globalPivotMatrix: Matrix = Matrix.create();
 	protected dirty: boolean;
 
@@ -110,6 +116,14 @@ export default class Transform extends ScillaComponent {
 		}
 	}
 
+	/**
+	 * 获取全局坐标
+	 */
+	get globalPosition(){
+		this._globalPosition.setXY(this._globalMatrix.tx, this._globalMatrix.ty);
+		return this._globalPosition;
+	}
+
 	makeDirty(value, key, oldValue?) {
 		this.dirty = true;
 
@@ -183,6 +197,8 @@ export default class Transform extends ScillaComponent {
 			if (parentTransform) {
 				this._renderAlpha = parentTransform._renderAlpha * this.alpha;
 				_globalMatrix.concat(parentTransform.getMatrix(true));
+			}else{
+				this._renderAlpha = this.alpha;
 			}
 		}else{
 			this._renderAlpha = this.alpha;
@@ -197,8 +213,17 @@ export default class Transform extends ScillaComponent {
 	/**
 	 * 获取矩阵
 	 */
-	getMatrix(withPivot = false): Matrix {
-		return withPivot ? this._globalPivotMatrix : this._globalMatrix;
+	getMatrix(withPivot: boolean = false, invert: boolean = false): Matrix {
+		let matrix = withPivot ? this._globalPivotMatrix : this._globalMatrix;
+		if(invert){
+			const invertMatrix = this._globalInvertMatrix;
+			invertMatrix.copyFrom(matrix);
+			invertMatrix.invert();
+
+			return invertMatrix;
+		}
+
+		return matrix;
 	}
 
 	onUpdate(t) {