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/* <license>
* This file is part of the dis-Emi-A HaXe Library. Copyright © edA-qa mort-ora-y
* For full copyright and license information please refer to doc/license.txt.
* </license>
*/
package flashx;
import mathx.Point2;
import flash.display.BitmapData;
typedef RenderReturn =
{
//the rendered content
bitmapData : BitmapData,
//the origin of the bitmap in relation to the provided object (in parent coords)
origin : Point2
}
class SpriteUtil
{
/**
* Renders the display object to a bitmap. The size of the resulting
* bitmap will be the size of the provided object as rendered on the
* current stage.
*
* @return [out] the set of data
*/
static public function render( dobj : flash.display.DisplayObject ) : Dynamic
{
ASSERT_NOTNULL( dobj.parent )
ASSERT_NOTNULL( dobj.stage )
var sq = dobj.getBounds( dobj.stage );
var lq = dobj.getBounds( null );
//extend the bounds to include any partial pixels
var x0 = Math.floor( sq.left );
var x1 = Math.ceil( sq.right );
var y0 = Math.floor( sq.top );
var y1 = Math.ceil( sq.bottom );
ASSERT_FALSE( x1 == x0 )
ASSERT_FALSE( y1 == y0 )
//position to upperleft of bitmap
var mat = new flash.geom.Matrix();
mat.translate( -lq.x, -lq.y );
//and draw it
var bd = new BitmapData( x1 - x0 + 1, y1 - y0 + 1, true, 0 );
bd.draw( dobj, mat );
return {
bitmapData: bd,
origin: Point2.from( dobj.parent.globalToLocal( new flash.geom.Point( x0, y0 ) ) )
};
}
}
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