How the create The .png texture? about cesiummeshvisualizer HOT 4 CLOSED

      function convert3DTexture(rawData, width, height, depth, flipY) {
        var newWidth = width * maxTilesWidth;
        var newHeight = height * maxTilesHeight;
        var canvas = document.createElement('canvas');
        canvas.height = newHeight;
        canvas.width = newWidth;
        var ctx = canvas.getContext('2d');
        var imageData = ctx.getImageData(0, 0, newWidth, newHeight);

        var realPosX, realPosY;
        var index = 0;

        for (var z = 0; z < depth; z++) {
            for (var y = 0; y < height; y++) {
                for (var x = 0; x < width; x++) {
                    var value = rawData[index++];

                    realPosX = x + (z % maxTilesHeight) * width;

                    var yPos;
                    if (flipY) {
                        yPos = height - y - 1;
                    }
                    else {
                        yPos = y;
                    }

                    realPosY = yPos + parseInt(z / maxTilesWidth) * height;
                    var colorIdx = realPosX + realPosY * newWidth;
                    colorIdx *= 4;
                    imageData.data[colorIdx] = value;
                    imageData.data[colorIdx + 1] = value;
                    imageData.data[colorIdx + 2] = value;
                    imageData.data[colorIdx + 3] = value;

                }
            }
        }
        ctx.putImageData(imageData, 0, 0);
        return canvas;
    }