clone (BitmapData.clone method) -- Flash CS3

Returns a new BitmapData object that is a clone of the original instance with an exact copy of the contained bitmap.

Returns

Example

The following example creates three BitmapData objects and compares them. You can create the bitmap_1 instance by using the BitmapData constructor. You create the bitmap_2 instance by setting it equal to bitmap_1. You create he clonedBitmap instance by cloning bitmap_1. Notice that although bitmap_2 evaluates as being equal to bitmap_1, clonedBitmap does not, even though it contains the same values as bitmap_1.

import flash.display.BitmapData;

var bitmap_1:BitmapData = new BitmapData(100, 80, false, 0x000000);
var bitmap_2:BitmapData = bitmap_1;
var clonedBitmap:BitmapData = bitmap_1.clone();

trace(bitmap_1 == bitmap_2); // true
trace(bitmap_1 == clonedBitmap); // false

for(var i in bitmap_1) {
    trace(">> " + i + ": " + bitmap_1[i]);
    // >> generateFilterRect: [type Function]
    // >> dispose: [type Function]
    // >> clone: [type Function]
    // >> copyChannel: [type Function]
    // >> noise: [type Function]
    // >> merge: [type Function]
    // >> paletteMap: [type Function]
    // >> hitTest: [type Function]
    // >> colorTransform: [type Function]
    // >> perlinNoise: [type Function]
    // >> getColorBoundsRect: [type Function]
    // >> floodFill: [type Function]
    // >> setPixel32: [type Function]
    // >> getPixel32: [type Function]
    // >> pixelDissolve: [type Function]
    // >> draw: [type Function]
    // >> threshold: [type Function]
    // >> scroll: [type Function]
    // >> applyFilter: [type Function]
    // >> copyPixels: [type Function]
    // >> fillRect: [type Function]
    // >> setPixel: [type Function]
    // >> getPixel: [type Function]
    // >> transparent: false
    // >> rectangle: (x=0, y=0, w=100, h=80)
    // >> height: 80
    // >> width: 100
}

for(var i in clonedBitmap) {
    trace(">> " + i + ": " + clonedBitmap[i]);
    // >> generateFilterRect: [type Function]
    // >> dispose: [type Function]
    // >> clone: [type Function]
    // >> copyChannel: [type Function]
    // >> noise: [type Function]
    // >> merge: [type Function]
    // >> paletteMap: [type Function]
    // >> hitTest: [type Function]
    // >> colorTransform: [type Function]
    // >> perlinNoise: [type Function]
    // >> getColorBoundsRect: [type Function]
    // >> floodFill: [type Function]
    // >> setPixel32: [type Function]
    // >> getPixel32: [type Function]
    // >> pixelDissolve: [type Function]
    // >> draw: [type Function]
    // >> threshold: [type Function]
    // >> scroll: [type Function]
    // >> applyFilter: [type Function]
    // >> copyPixels: [type Function]
    // >> fillRect: [type Function]
    // >> setPixel: [type Function]
    // >> getPixel: [type Function]
    // >> transparent: false
    // >> rectangle: (x=0, y=0, w=100, h=80)
    // >> height: 80
    // >> width: 100
}

To further demonstrate the relationships between bitmap_1, bitmap_2, and clonedBitmap the following example modifies the pixel value at (1, 1) of bitmap_1. Modifying pixel value at (1, 1) demonstrates that the clone() method creates an instance based on values of the bitmap_1 instance instead of referring to the values.

import flash.display.BitmapData;

var bitmap_1:BitmapData = new BitmapData(100, 80, false, 0x000000);
var bitmap_2:BitmapData = bitmap_1;
var clonedBitmap:BitmapData = bitmap_1.clone();

trace(bitmap_1.getPixel32(1, 1)); // -16777216
trace(bitmap_2.getPixel32(1, 1)); // -16777216
trace(clonedBitmap.getPixel32(1, 1)); // -16777216

bitmap_1.setPixel32(1, 1, 0xFFFFFF);

trace(bitmap_1.getPixel32(1, 1)); // -1
trace(bitmap_2.getPixel32(1, 1)); // -1
trace(clonedBitmap.getPixel32(1, 1)); // -16777216