Hello Hello,
Just wondering if anyone has any tips or ideas on optimizing this function,
as its really slow.. Basically, it creates an inverted alpha mask from a
bitmap by going through every pixel in the bit map.
Here is the function:
<code>
private function createInvertedMask() {
var w:Number = mask_bitmap.width;
var h:Number = mask_bitmap.height;
var r:Number = 0;
var c:Number = 0;
var v:Number;
for ( r = 0 ; r < w ; r++ ) {
for ( c = 0 ; c < h ; c++ ) {
v = mask_bitmap.getPixel32( r, c );
if ( v == 0 ) {
mask_bitmap.setPixel32( r, c ,
0xFF000000 );
} else {
mask_bitmap.setPixel32( r, c ,
0x00000000 );
}
}
}
}
</code>
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