新增Time/String/Array/Keyboard/Random/Object/Texture辅助类

2020-07-17 14:34:42 +08:00
parent e686ba64d7
commit c96e8b3a04
18 changed files with 7173 additions and 92 deletions
@@ -0,0 +1,154 @@
+/**
+ * 纹理帮助类
+ */
+class TextureUtils {
+    public static sharedCanvas: HTMLCanvasElement;
+    public static sharedContext: CanvasRenderingContext2D;
+
+    public static convertImageToCanvas(texture: egret.Texture, rect?: egret.Rectangle): HTMLCanvasElement{
+        if (!this.sharedCanvas){
+            this.sharedCanvas = egret.sys.createCanvas();
+            this.sharedContext = this.sharedCanvas.getContext("2d");
+        }
+
+        let w = texture.$getTextureWidth();
+        let h = texture.$getTextureHeight();
+        if (!rect){
+            rect = egret.$TempRectangle;
+            rect.x = 0;
+            rect.y = 0;
+            rect.width = w;
+            rect.height = h;
+        }
+        
+        rect.x = Math.min(rect.x, w - 1);
+        rect.y = Math.min(rect.y, h - 1);
+        rect.width = Math.min(rect.width, w - rect.x);
+        rect.height = Math.min(rect.height, h - rect.y);
+
+        let iWidth = Math.floor(rect.width);
+        let iHeight = Math.floor(rect.height);
+        let surface = this.sharedCanvas;
+        surface["style"]["width"] = iWidth + "px";
+        surface["style"]["height"] = iHeight + "px";
+        this.sharedCanvas.width = iWidth;
+        this.sharedCanvas.height = iHeight;
+
+        if (egret.Capabilities.renderMode == "webgl") {
+            let renderTexture: egret.RenderTexture;
+            //webgl下非RenderTexture纹理先画到RenderTexture
+            if (!(<egret.RenderTexture>texture).$renderBuffer) {
+                if (egret.sys.systemRenderer["renderClear"]) {
+                    egret.sys.systemRenderer["renderClear"]();
+                }
+                renderTexture = new egret.RenderTexture();
+                renderTexture.drawToTexture(new egret.Bitmap(texture));
+            }
+            else {
+                renderTexture = <egret.RenderTexture>texture;
+            }
+            //从RenderTexture中读取像素数据，填入canvas
+            let pixels = renderTexture.$renderBuffer.getPixels(rect.x, rect.y, iWidth, iHeight);
+            let x = 0;
+            let y = 0;
+            for (let i = 0; i < pixels.length; i += 4) {
+                this.sharedContext.fillStyle =
+                    'rgba(' + pixels[i]
+                    + ',' + pixels[i + 1]
+                    + ',' + pixels[i + 2]
+                    + ',' + (pixels[i + 3] / 255) + ')';
+                this.sharedContext.fillRect(x, y, 1, 1);
+                x++;
+                if (x == iWidth) {
+                    x = 0;
+                    y++;
+                }
+            }
+
+            if (!(<egret.RenderTexture>texture).$renderBuffer) {
+                renderTexture.dispose();
+            }
+
+            return surface;
+        }
+        else {
+            let bitmapData = texture;
+            let offsetX: number = Math.round(bitmapData.$offsetX);
+            let offsetY: number = Math.round(bitmapData.$offsetY);
+            let bitmapWidth: number = bitmapData.$bitmapWidth;
+            let bitmapHeight: number = bitmapData.$bitmapHeight;
+            let $TextureScaleFactor = SceneManager.stage.textureScaleFactor;
+            this.sharedContext.drawImage(bitmapData.$bitmapData.source, bitmapData.$bitmapX + rect.x / $TextureScaleFactor, bitmapData.$bitmapY + rect.y / $TextureScaleFactor,
+                bitmapWidth * rect.width / w, bitmapHeight * rect.height / h, offsetX, offsetY, rect.width, rect.height);
+            return surface;
+        }
+    }
+
+    public static toDataURL(type: string, texture: egret.Texture, rect?: egret.Rectangle, encoderOptions?): string {
+        try {
+            let surface = this.convertImageToCanvas(texture, rect);
+            let result = surface.toDataURL(type, encoderOptions);
+            return result;
+        }
+        catch (e) {
+            egret.$error(1033);
+        }
+        return null;
+    }
+
+    /**
+     * 有些杀毒软件认为 saveToFile 可能是一个病毒文件
+     * @param type 
+     * @param texture 
+     * @param filePath 
+     * @param rect 
+     * @param encoderOptions 
+     */
+    public static eliFoTevas(type: string, texture: egret.Texture, filePath: string, rect?: egret.Rectangle, encoderOptions?): void {
+        let surface = this.convertImageToCanvas(texture, rect);
+        let result = (surface as any).toTempFilePathSync({
+            fileType: type.indexOf("png") >= 0 ? "png" : "jpg"
+        });
+
+        wx.getFileSystemManager().saveFile({
+            tempFilePath: result,
+            filePath: `${wx.env.USER_DATA_PATH}/${filePath}`,
+            success: function (res) {
+                //todo
+            }
+        })
+
+        return result;
+    }
+
+    public static getPixel32(texture: egret.Texture, x: number, y: number): number[] {
+        egret.$warn(1041, "getPixel32", "getPixels");
+        return texture.getPixels(x, y);
+    }
+
+    public static getPixels(texture: egret.Texture, x: number, y: number, width: number = 1, height: number = 1): number[] {
+        //webgl环境下不需要转换成canvas获取像素信息
+        if (egret.Capabilities.renderMode == "webgl") {
+            let renderTexture: egret.RenderTexture;
+            //webgl下非RenderTexture纹理先画到RenderTexture
+            if (!(<egret.RenderTexture>texture).$renderBuffer) {
+                renderTexture = new egret.RenderTexture();
+                renderTexture.drawToTexture(new egret.Bitmap(texture));
+            }
+            else {
+                renderTexture = <egret.RenderTexture>texture;
+            }
+            //从RenderTexture中读取像素数据
+            let pixels = renderTexture.$renderBuffer.getPixels(x, y, width, height);
+            return pixels;
+        }
+        try {
+            let surface = this.convertImageToCanvas(texture);
+            let result = this.sharedContext.getImageData(x, y, width, height).data;
+            return <number[]><any>result;
+        }
+        catch (e) {
+            egret.$error(1039);
+        }
+    }
+}