[AS3] BitmapData.merge()方法 - 從來源影像到目標影像的每個色版的混合

merge(sourceBitmapData:BitmapData, sourceRect:Rectangle, destPoint:Point, redMultiplier:uint, greenMultiplier:uint, blueMultiplier:uint, alphaMultiplier:uint):void
執行從來源影像到目標影像的每個色版的混合。

適用於 Adobe Flash Professional CS5 的 ActionScript 3.0 參考__●flash.display.BitmapData.merge()方法


(一)

991213_BitmapData.merge_1.swf

import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.geom.Rectangle;
import flash.geom.Point;

var bmd1:BitmapData = new BitmapData(100, 80, true, 0xFF00FF00);
var bmd2:BitmapData = new BitmapData(100, 80, true, 0xFFFF0000);
var rect:Rectangle = new Rectangle(0, 0, 20, 20);
var pt:Point = new Point(20, 20);
var mult:uint = 0x80; // 50% 
bmd1.merge(bmd2, rect, pt, mult, mult, mult, mult);

var bm1:Bitmap = new Bitmap(bmd1);
addChild(bm1);
var bm2:Bitmap = new Bitmap(bmd2);
addChild(bm2);
bm2.x = 110;

(二)

 

991213_BitmapData.merge_2.swf

import flash.display.BitmapData;
import flash.display.Bitmap;
import flash.geom.Rectangle;
import flash.geom.Point;

//
var bmd1:BitmapData = new MyPhoto1(0, 0);
var bmd2:BitmapData = new MyPhoto2(0, 0);
//
var rect:Rectangle = new Rectangle(100, 100, 450, 300);
var pt:Point = new Point(50, 50);
var multiplier:uint = 0x80;
//
bmd1.merge(bmd2, rect, pt, 0xf0, 0xa0, 0x20, 0x30);
//
var bm1:Bitmap = new Bitmap(bmd1);
bm1.x = 0;
bm1.y = 0;
/*
var bm2:Bitmap = new Bitmap(bmd2);
bm2.x = 0;
bm2.y = 0;
*/
//
addChild(bm1);
//addChild(bm2);