dragonbones-runtime/.cache/egret-core-5.1.0/src/egret/display/Mesh.ts

the tools to build dragonbones file for diffrent framework

//////////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (c) 2014-present, Egret Technology.
//  All rights reserved.
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//  modification, are permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
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//       derived from this software without specific prior written permission.
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//////////////////////////////////////////////////////////////////////////////////////

namespace egret {
    /**
     * @private
     */
    export class Mesh extends Bitmap {

        public constructor(value?: Texture) {
            super(value);
            this.$renderNode = new sys.MeshNode();
        }

        /**
         * @private
         */
        $updateRenderNode(): void {
            let image = this.$bitmapData;
            if (!image) {
                return;
            }

            let scale = $TextureScaleFactor;
            let node = <sys.MeshNode>this.$renderNode;
            node.smoothing = this.$smoothing;
            node.image = image;
            node.imageWidth = this.$sourceWidth;
            node.imageHeight = this.$sourceHeight;

            let destW: number = !isNaN(this.$explicitBitmapWidth) ? this.$explicitBitmapWidth : this.$textureWidth;
            let destH: number = !isNaN(this.$explicitBitmapHeight) ? this.$explicitBitmapHeight : this.$textureHeight;
            let tsX: number = destW / this.$textureWidth;
            let tsY: number = destH / this.$textureHeight;
            let bitmapWidth: number = this.$bitmapWidth;
            let bitmapHeight: number = this.$bitmapHeight;

            node.drawMesh(
                this.$bitmapX, this.$bitmapY,
                bitmapWidth, bitmapHeight,
                this.$offsetX * tsX, this.$offsetY * tsY,
                tsX * bitmapWidth, tsY * bitmapHeight
            );
        }

        /**
         * @private
         */
        private _verticesDirty: boolean = true;
        private _bounds: Rectangle = new Rectangle();
        /**
         * @private
         */
        $updateVertices(): void {
            let self = this;
            self._verticesDirty = true;
            self.$renderDirty = true;

            let p = self.$parent;
            if (p && !p.$cacheDirty) {
                p.$cacheDirty = true;
                p.$cacheDirtyUp();
            }
            let maskedObject = self.$maskedObject;
            if (maskedObject && !maskedObject.$cacheDirty) {
                maskedObject.$cacheDirty = true;
                maskedObject.$cacheDirtyUp();
            }
        }

        /**
         * @private
         */
        $measureContentBounds(bounds: Rectangle): void {
            if (this._verticesDirty) {
                this._verticesDirty = false;
                let node = <sys.MeshNode>this.$renderNode;
                let vertices = node.vertices;
                if (vertices.length) {
                    this._bounds.setTo(Number.MAX_VALUE, Number.MAX_VALUE, -Number.MAX_VALUE, -Number.MAX_VALUE);
                    for (let i = 0, l = vertices.length; i < l; i += 2) {
                        let x = vertices[i];
                        let y = vertices[i + 1];
                        if (this._bounds.x > x) this._bounds.x = x;
                        if (this._bounds.width < x) this._bounds.width = x;
                        if (this._bounds.y > y) this._bounds.y = y;
                        if (this._bounds.height < y) this._bounds.height = y;
                    }
                    this._bounds.width -= this._bounds.x;
                    this._bounds.height -= this._bounds.y;
                } else {
                    this._bounds.setTo(0, 0, 0, 0);
                }
                node.bounds.copyFrom(this._bounds);
            }
            bounds.copyFrom(this._bounds);
        }
    }
}