スムージング処理 – 水玉製作所

Shapeで描いた図形を綺麗なBitmapにしたい時に向けて、スムージングの癖を確認するために簡単なテストパターンを試してみた。

↓Flashで生成した画像をPhotoShopで角度を1度回転させたもの。

↓Flashで描画

ImageQuality – wonderfl build flash online

元のShapeを回転させてBitmapにdrawする。その回転のさせ方などをいろいろ試した。
Bitmap、BitmapData、Shapeにdrawする際には、まず二倍のサイズに拡大してから縮小しながらdrawしている。
モアレのでき方が微妙に違う場合があるのに注意してほしい。

この確認からわかったこと。
・Bitmap自体を回転して表示するだけでもキレイ。
・BitmapDataへのdrawの場合、StageQuality.HIGHがクオリティの上限。
・BitmapとShapeへのdrawの場合、StageQuality.HIGH_8X8がクオリティの上限。
・BitmapとShapeは特に違いが無い。
・二回に分けて縮小しても特にキレイさが増すように見えない。むしろモアレが増えてる。

package 
{
	import flash.display.Sprite;
	import flash.display.StageQuality;
	import flash.events.Event;
	
	/**
	 * ...
	 * 参考
	 * http://cuaoar.jp/2012/04/flash-player-113-bittmap.html
	 * @author umhr
	 */
	public class WonderflMain extends Sprite 
	{
		
		public function WonderflMain():void 
		{
			if (stage) init();
			else addEventListener(Event.ADDED_TO_STAGE, init);
		}
		
		private function init(e:Event = null):void 
		{
			removeEventListener(Event.ADDED_TO_STAGE, init);
			// entry point
			stage.scaleMode = "noScale";
			stage.align = "TL";
			addChild(new Canvas());
		}
		
	}
	
}

	
	import com.bit101.components.CheckBox;
	import com.bit101.components.ComboBox;
	import com.bit101.components.Label;
	import com.bit101.components.NumericStepper;
	import com.bit101.components.Style;
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.DisplayObject;
	import flash.display.GraphicsPathCommand;
	import flash.display.PixelSnapping;
	import flash.display.Shape;
	import flash.display.Sprite;
	import flash.display.StageQuality;
	import flash.events.Event;
	import flash.events.MouseEvent;
	import flash.geom.Matrix;
	/**
	 * ...
	 * @author umhr
	 */
	 class Canvas extends Sprite 
	{
		private var _masterShape:Shape;
		private var _drawCanvas:Sprite = new Sprite();
		private var _checkBox:CheckBox;
		private var _loupe:Loupe;
		private var _numericStepper:NumericStepper;
		private var _comboBox:ComboBox;
		public function Canvas() 
		{
			init();
		}
		private function init():void 
		{
			if (stage) onInit();
			else addEventListener(Event.ADDED_TO_STAGE, onInit);
		}

		private function onInit(event:Event = null):void 
		{
			removeEventListener(Event.ADDED_TO_STAGE, onInit);
			// entry point
			
			Style.embedFonts = false;
			Style.fontName = "PF Ronda Seven";
			Style.fontSize = 10;
			
			_checkBox = new CheckBox(this, 20, 175, "縮小時に回転", onRadio);
			_checkBox.selected = true;
			_numericStepper = new NumericStepper(this, 20, 150, onRadio);
			_numericStepper.width = 55;
			_numericStepper.value = 0;
			new Label(this, 80, 150, "回転角度（degree）");
			var qualityList:Array/*String*/ = ["StageQuality.LOW", "StageQuality.MEDIUM", "StageQuality.HIGH", "StageQuality.BEST", "StageQuality.HIGH_8X8", "StageQuality.HIGH_8X8_LINEAR", "StageQuality.HIGH_16X16", "StageQuality.HIGH_16X16_LINEAR"];
			_comboBox = new ComboBox(this, 20, 190, "Choose a Quality", qualityList);
			_comboBox.width = 180;
			_comboBox.selectedIndex = 4;
			_comboBox.addEventListener(Event.SELECT, onRadio);
			new Label(this, 20, 5, "元Shape");
			_masterShape = getShape(20, 20,true);
			_numericStepper.value = 1;
			addChild(_masterShape);
			
			addChild(_drawCanvas);
			
			draw();
			
			_loupe = new Loupe();
			_loupe.x = 10;
			_loupe.y = 240;
			addChild(_loupe);
			addEventListener(MouseEvent.MOUSE_MOVE, mouseMove);
		}
		
		private function mouseMove(e:MouseEvent):void 
		{
			_loupe.setZoom(this,stage.mouseX,stage.mouseY);
		}
		private function onRadio(e:Event):void {
			draw();
		}
		
		private function draw():void {
			var selectedItem:String = String(_comboBox.selectedItem);
			if (_comboBox.selectedItem && selectedItem.substr(0,"StageQuality.".length) == "StageQuality.") {
				selectedItem = selectedItem.substr("StageQuality.".length);
				stage.quality = StageQuality[selectedItem];
			}
			
			while (_drawCanvas.numChildren > 0) {
				_drawCanvas.removeChildAt(0);
			}
			_drawCanvas.addChild(new Label(this, 225, 0, "Shape自体を回転"));
			_drawCanvas.addChild(getShape(225,13,false));
			
			_drawCanvas.addChild(getBitmap(_masterShape,2,345,0));
			
			// BitmapData
			_drawCanvas.addChild(getBitmapByBitmapData(_masterShape,2,225,115));
			_drawCanvas.addChild(getBitmapByBitmapData2(_masterShape, 2, 345, 115));
			// Bitmap
			_drawCanvas.addChild(getBitmapByBitmap(_masterShape,2,225,230));
			_drawCanvas.addChild(getBitmapByBitmap2(_masterShape,2,345,230));
			// Shape
			_drawCanvas.addChild(getBitmapByShape(_masterShape,2,225,350));
			_drawCanvas.addChild(getBitmapByShape2(_masterShape,2,345,350));
		}
		private function getBitmap(displayObject:DisplayObject, sampleScale:Number, x:int, y:int):Bitmap {
			var rotation:int = _numericStepper.value;
			_drawCanvas.addChild(new Label(this, x, y, "Bitmap自体を回転"));
			var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);
			result.bitmapData.draw(displayObject);
			result.rotation = rotation;
			result.x = x;
			result.y = y+13;
			return result;
		}
		
		private function getShape(x:int, y:int,isMoto:Boolean):Shape {
			var rotation:int = _numericStepper.value;
			var shape:Shape = new Shape();
			shape.graphics.beginFill(0xFFFFFF);
			shape.graphics.drawRect(0, 0, 100, 100);
			
				shape.graphics.beginFill(0x000000);
				shape.graphics.drawRect(2, 2, 96, 96);
				shape.graphics.beginFill(0xFFFFFF);
				shape.graphics.drawRect(4, 4, 92, 92);
				
			for (var i:int = 2; i < 16; i++) 
			{
				shape.graphics.beginFill(0x000000);
				shape.graphics.drawRect(2+i*2, 2+i*2, 96-i*4, 96-i*4);
				shape.graphics.beginFill(0xFFFFFF);
				shape.graphics.drawRect(2+i*2+1, 2+i*2+1, 96-i*4-2, 96-i*4-2);
			}
			shape.graphics.endFill();
			shape.x = x;
			shape.y = y;
			shape.rotation = rotation;
			return shape;
		}
		
		private function getBitmapByBitmapData(displayObject:DisplayObject, sampleScale:Number, x:int, y:int):Bitmap {
			var rotation:int = _numericStepper.value;
			_drawCanvas.addChild(new Label(this, x, y, "BitmapDataにdraw"));
			
			var tempBitmap:BitmapData = new BitmapData(displayObject.width*sampleScale, displayObject.height*sampleScale, true, 0x0);
			var matrix:Matrix = new Matrix();
			matrix.scale(sampleScale, sampleScale);
			if (!_checkBox.selected) {
				matrix.rotate(rotation * Math.PI / 180);
			}
			tempBitmap.draw(displayObject, matrix, null, null, null, true);
			
			matrix.identity();
			if (_checkBox.selected) {
				matrix.rotate(rotation * Math.PI / 180);
			}
			matrix.scale(1 / sampleScale, 1 / sampleScale);
			
			var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);
			result.bitmapData.draw(tempBitmap, matrix, null, null, null, true);
			result.smoothing = true;
			result.x = x;
			result.y = y+13;
			return result;
		}
		
		private function getBitmapByBitmap(displayObject:DisplayObject, sampleScale:Number, x:int, y:int):Bitmap {
			var rotation:int = _numericStepper.value;
			_drawCanvas.addChild(new Label(this, x, y, "Bitmapにdraw"));
			
			var tempBitmap:Bitmap = new Bitmap(new BitmapData(displayObject.width*sampleScale, displayObject.height*sampleScale, true, 0x0), PixelSnapping.AUTO, true);
			var matrix:Matrix = new Matrix();
			matrix.scale(sampleScale, sampleScale);
			if (!_checkBox.selected) {
				matrix.rotate(rotation * Math.PI / 180);
			}
			tempBitmap.bitmapData.draw(displayObject, matrix, null, null, null, true);
			
			matrix.identity();
			if (_checkBox.selected) {
				matrix.rotate(rotation * Math.PI / 180);
			}
			matrix.scale(1 / sampleScale, 1 / sampleScale);
			
			var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);
			result.bitmapData.draw(tempBitmap, matrix, null, null, null, true);
			result.x = x;
			result.y = y+13;
			return result;
		}
		
		private function getBitmapByBitmapData2(displayObject:DisplayObject, sampleScale:Number, x:int, y:int):Bitmap {
			var rotation:int = _numericStepper.value;
			_drawCanvas.addChild(new Label(this, x, y, "BitmapDataに2回draw"));
			
			var tempBitmap:BitmapData = new BitmapData(displayObject.width*sampleScale, displayObject.height*sampleScale, true, 0x0);
			var matrix:Matrix = new Matrix();
			matrix.scale(sampleScale, sampleScale);
			if (!_checkBox.selected) {
				matrix.rotate(rotation * Math.PI / 180);
			}
			tempBitmap.draw(displayObject, matrix,null,null,null,true);
			
			matrix.identity();
			matrix.scale(1 / Math.sqrt(sampleScale), 1 / Math.sqrt(sampleScale));
			if (_checkBox.selected) {
				matrix.rotate(0.5 * rotation * Math.PI / 180);
			}
			
			var tempBitmap2:BitmapData = new BitmapData(Math.ceil(displayObject.width*Math.sqrt(sampleScale)), Math.ceil(displayObject.height*Math.sqrt(sampleScale)), true, 0x0);
			tempBitmap2.draw(tempBitmap, matrix, null, null, null, true);
			
			var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);
			result.bitmapData.draw(tempBitmap2, matrix, null, null, null, true);
			result.x = x;
			result.y = y+13;
			return result;
		}
		private function getBitmapByBitmap2(displayObject:DisplayObject,sampleScale:Number,x:int,y:int):Bitmap {
			var rotation:int = _numericStepper.value;
			_drawCanvas.addChild(new Label(this, x, y, "Bitmapに2回draw"));
			
			var tempBitmap:Bitmap = new Bitmap(new BitmapData(displayObject.width*sampleScale, displayObject.height*sampleScale, true, 0x0), PixelSnapping.AUTO, true);
			var matrix:Matrix = new Matrix();
			matrix.scale(sampleScale, sampleScale);
			if (!_checkBox.selected) {
				matrix.rotate(rotation * Math.PI / 180);
			}
			tempBitmap.bitmapData.draw(displayObject, matrix,null,null,null,true);
			
			matrix.identity();
			matrix.scale(1 / Math.sqrt(sampleScale), 1 / Math.sqrt(sampleScale));
			if (_checkBox.selected) {
				matrix.rotate(0.5 * rotation * Math.PI / 180);
			}
			var tempBitmap2:Bitmap = new Bitmap(new BitmapData(Math.ceil(displayObject.width*Math.sqrt(sampleScale)), Math.ceil(displayObject.height*Math.sqrt(sampleScale)), true, 0x0), PixelSnapping.AUTO, true);
			tempBitmap2.bitmapData.draw(tempBitmap, matrix,null,null,null,true);
			
			var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);
			result.bitmapData.draw(tempBitmap2, matrix,null,null,null,true);
			result.x = x;
			result.y = y+13;
			return result;
		}
		
		private function getBitmapByShape(displayObject:DisplayObject, sampleScale:Number, x:int, y:int):Bitmap {
			var rotation:int = _numericStepper.value;
			_drawCanvas.addChild(new Label(this, x, y, "ShapeにbeginBitmapFill"));
			
			var tempBitmap:Bitmap = new Bitmap(new BitmapData(displayObject.width*sampleScale, displayObject.height*sampleScale, true, 0x0), PixelSnapping.AUTO, true);
			var matrix:Matrix = new Matrix();
			matrix.scale(sampleScale, sampleScale);
			if (!_checkBox.selected) {
				matrix.rotate(rotation * Math.PI / 180);
			}
			tempBitmap.bitmapData.draw(displayObject, matrix, null, null, null, true);
			
			matrix.identity();
			if (_checkBox.selected) {
				matrix.rotate(rotation * Math.PI / 180);
			}
			matrix.scale(1 / sampleScale, 1 / sampleScale);
			
			var shape:Shape = new Shape();
			shape.graphics.beginBitmapFill(tempBitmap.bitmapData, matrix, false, true);
			shape.graphics.drawRect(0, 0, Math.ceil(displayObject.width * sampleScale), Math.ceil(displayObject.height * sampleScale));
			shape.graphics.endFill();
			
			var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);
			result.bitmapData.draw(shape, null, null, null, null, true);
			result.x = x;
			result.y = y+13;
			return result;
		}
		private function getBitmapByShape2(displayObject:DisplayObject, sampleScale:Number, x:int, y:int):Bitmap {
			var rotation:int = _numericStepper.value;
			_drawCanvas.addChild(new Label(this, x, y, "Shapeに2回beginBitmapFill"));
			
			var tempBitmap:Bitmap = new Bitmap(new BitmapData(displayObject.width*sampleScale, displayObject.height*sampleScale, true, 0x0), PixelSnapping.AUTO, true);
			var matrix:Matrix = new Matrix();
			matrix.scale(sampleScale, sampleScale);
			if (!_checkBox.selected) {
				matrix.rotate(rotation * Math.PI / 180);
			}
			tempBitmap.bitmapData.draw(displayObject, matrix, null, null, null, true);
			
			matrix.identity();
			if (_checkBox.selected) {
				matrix.rotate(0.5 * rotation * Math.PI / 180);
			}
			matrix.scale(1 / Math.sqrt(sampleScale), 1 / Math.sqrt(sampleScale));
			
			var shape:Shape = new Shape();
			shape.graphics.beginBitmapFill(tempBitmap.bitmapData, matrix, false, true);
			shape.graphics.drawRect(0, 0, Math.ceil(displayObject.width * Math.sqrt(sampleScale)), Math.ceil(displayObject.height * Math.sqrt(sampleScale)));
			shape.graphics.endFill();
			var tempBitmapData:BitmapData = new BitmapData(shape.width, shape.height);
			tempBitmapData.draw(shape,null, null, null, null, true);
			
			var shape2:Shape = new Shape();
			shape2.graphics.beginBitmapFill(tempBitmapData, matrix, false, true);
			shape2.graphics.drawRect(0, 0, displayObject.width, displayObject.height);
			shape2.graphics.endFill();
			
			
			var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);
			result.bitmapData.draw(shape2, null, null, null, null, true);
			result.x = x;
			result.y = y+13;
			return result;
		}
		
		private function createStarPoints(tx:Number,ty:Number,numVertices:int, longRadius:Number):Array {
			var shortRadius:Number = longRadius * (5 / 13);
			var starPoints:Vector.<Number> = new Vector.<Number>();
			var angle:Number = Math.PI;
			var theta:Number = angle / numVertices;
			angle /= -2;
			for (var i:int = 0; i < numVertices; i++) {
				starPoints.push(longRadius * Math.cos(angle)+tx, longRadius * Math.sin(angle)+ty);
				angle += theta;
				starPoints.push(shortRadius * Math.cos(angle)+tx, shortRadius * Math.sin(angle)+ty);
				angle += theta;
			}
			starPoints.push(longRadius * Math.cos( -Math.PI/2)+tx, longRadius * Math.sin( -Math.PI/2)+ty);
			
			var pathCommand:Vector.<int> = new Vector.<int>();
			var n:int = numVertices * 2 + 1;
			for (i = 0; i < n; i++) 
			{
				pathCommand[i] = i == 0?GraphicsPathCommand.MOVE_TO:GraphicsPathCommand.LINE_TO;
			}
			return [pathCommand, starPoints];
		}
	}
	

	
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.DisplayObject;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.geom.Matrix;
	import flash.geom.Rectangle;
	/**
	 * ...
	 * @author umhr
	 */
	 class Loupe extends Sprite 
	{
		private var _bitmap:Bitmap;
		
		public function Loupe() 
		{
			init();
		}
		private function init():void 
		{
			if (stage) onInit();
			else addEventListener(Event.ADDED_TO_STAGE, onInit);
		}

		private function onInit(event:Event = null):void 
		{
			removeEventListener(Event.ADDED_TO_STAGE, onInit);
			// entry point
			
			_bitmap = new Bitmap(new BitmapData(200, 200, false,0xFF000000));
			addChild(_bitmap);
		}
		public function setZoom(displayObject:DisplayObject, mouseX:int, mouseY:int):void {
			var bitmapData:BitmapData = new BitmapData(40, 40, false);
			bitmapData.draw(displayObject,new Matrix(1,0,0,1,-mouseX+20,-mouseY+20), null, null,new Rectangle(0,0,40,40));
			
			_bitmap.bitmapData.fillRect(new Rectangle(1, 1, 198, 198), 0xFFFFFF);
			_bitmap.bitmapData.draw(bitmapData,new Matrix(5,0,0,5), null, null,new Rectangle(1,1,198,198));
		}
	}

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package

{

import flash.display.Sprite;

import flash.display.StageQuality;

import flash.events.Event;

/**

* ...

* 参考

* http://cuaoar.jp/2012/04/flash-player-113-bittmap.html

* @author umhr

public class WonderflMain extends Sprite

{

public function WonderflMain():void

{

if (stage) init();

else addEventListener(Event.ADDED_TO_STAGE, init);

}

private function init(e:Event = null):void

{

removeEventListener(Event.ADDED_TO_STAGE, init);

// entry point

stage.scaleMode = "noScale";

stage.align = "TL";

addChild(new Canvas());

}

import com.bit101.components.CheckBox;

import com.bit101.components.ComboBox;

import com.bit101.components.Label;

import com.bit101.components.NumericStepper;

import com.bit101.components.Style;

import flash.display.Bitmap;

import flash.display.BitmapData;

import flash.display.DisplayObject;

import flash.display.GraphicsPathCommand;

import flash.display.PixelSnapping;

import flash.display.Shape;

import flash.display.Sprite;

import flash.display.StageQuality;

import flash.events.Event;

import flash.events.MouseEvent;

import flash.geom.Matrix;

/**

* ...

* @author umhr

class Canvas extends Sprite

{

private var _masterShape:Shape;

private var _drawCanvas:Sprite = new Sprite();

private var _checkBox:CheckBox;

private var _loupe:Loupe;

private var _numericStepper:NumericStepper;

private var _comboBox:ComboBox;

public function Canvas()

{

init();

}

private function init():void

{

if (stage) onInit();

else addEventListener(Event.ADDED_TO_STAGE, onInit);

}

private function onInit(event:Event = null):void

{

removeEventListener(Event.ADDED_TO_STAGE, onInit);

// entry point

Style.embedFonts = false;

Style.fontName = "PF Ronda Seven";

Style.fontSize = 10;

_checkBox = new CheckBox(this, 20, 175, "縮小時に回転", onRadio);

_checkBox.selected = true;

_numericStepper = new NumericStepper(this, 20, 150, onRadio);

_numericStepper.width = 55;

_numericStepper.value = 0;

new Label(this, 80, 150, "回転角度（degree）");

var qualityList:Array/*String*/ = ["StageQuality.LOW", "StageQuality.MEDIUM", "StageQuality.HIGH", "StageQuality.BEST", "StageQuality.HIGH_8X8", "StageQuality.HIGH_8X8_LINEAR", "StageQuality.HIGH_16X16", "StageQuality.HIGH_16X16_LINEAR"];

_comboBox = new ComboBox(this, 20, 190, "Choose a Quality", qualityList);

_comboBox.width = 180;

_comboBox.selectedIndex = 4;

_comboBox.addEventListener(Event.SELECT, onRadio);

new Label(this, 20, 5, "元Shape");

_masterShape = getShape(20, 20,true);

_numericStepper.value = 1;

addChild(_masterShape);

addChild(_drawCanvas);

draw();

_loupe = new Loupe();

_loupe.x = 10;

_loupe.y = 240;

addChild(_loupe);

addEventListener(MouseEvent.MOUSE_MOVE, mouseMove);

}

private function mouseMove(e:MouseEvent):void

{

_loupe.setZoom(this,stage.mouseX,stage.mouseY);

}

private function onRadio(e:Event):void {

draw();

}

private function draw():void {

var selectedItem:String = String(_comboBox.selectedItem);

if (_comboBox.selectedItem && selectedItem.substr(0,"StageQuality.".length) == "StageQuality.") {

selectedItem = selectedItem.substr("StageQuality.".length);

stage.quality = StageQuality[selectedItem];

}

while (_drawCanvas.numChildren > 0) {

_drawCanvas.removeChildAt(0);

}

_drawCanvas.addChild(new Label(this, 225, 0, "Shape自体を回転"));

_drawCanvas.addChild(getShape(225,13,false));

_drawCanvas.addChild(getBitmap(_masterShape,2,345,0));

// BitmapData

_drawCanvas.addChild(getBitmapByBitmapData(_masterShape,2,225,115));

_drawCanvas.addChild(getBitmapByBitmapData2(_masterShape, 2, 345, 115));

// Bitmap

_drawCanvas.addChild(getBitmapByBitmap(_masterShape,2,225,230));

_drawCanvas.addChild(getBitmapByBitmap2(_masterShape,2,345,230));

// Shape

_drawCanvas.addChild(getBitmapByShape(_masterShape,2,225,350));

_drawCanvas.addChild(getBitmapByShape2(_masterShape,2,345,350));

}

private function getBitmap(displayObject:DisplayObject, sampleScale:Number, x:int, y:int):Bitmap {

var rotation:int = _numericStepper.value;

_drawCanvas.addChild(new Label(this, x, y, "Bitmap自体を回転"));

var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);

result.bitmapData.draw(displayObject);

result.rotation = rotation;

result.x = x;

result.y = y+13;

return result;

}

private function getShape(x:int, y:int,isMoto:Boolean):Shape {

var rotation:int = _numericStepper.value;

var shape:Shape = new Shape();

shape.graphics.beginFill(0xFFFFFF);

shape.graphics.drawRect(0, 0, 100, 100);

shape.graphics.beginFill(0x000000);

shape.graphics.drawRect(2, 2, 96, 96);

shape.graphics.beginFill(0xFFFFFF);

shape.graphics.drawRect(4, 4, 92, 92);

for (var i:int = 2; i < 16; i++)

{

shape.graphics.beginFill(0x000000);

shape.graphics.drawRect(2+i*2, 2+i*2, 96-i*4, 96-i*4);

shape.graphics.beginFill(0xFFFFFF);

shape.graphics.drawRect(2+i*2+1, 2+i*2+1, 96-i*4-2, 96-i*4-2);

}

shape.graphics.endFill();

shape.x = x;

shape.y = y;

shape.rotation = rotation;

return shape;

}

private function getBitmapByBitmapData(displayObject:DisplayObject, sampleScale:Number, x:int, y:int):Bitmap {

var rotation:int = _numericStepper.value;

_drawCanvas.addChild(new Label(this, x, y, "BitmapDataにdraw"));

var tempBitmap:BitmapData = new BitmapData(displayObject.width*sampleScale, displayObject.height*sampleScale, true, 0x0);

var matrix:Matrix = new Matrix();

matrix.scale(sampleScale, sampleScale);

if (!_checkBox.selected) {

matrix.rotate(rotation * Math.PI / 180);

}

tempBitmap.draw(displayObject, matrix, null, null, null, true);

matrix.identity();

if (_checkBox.selected) {

matrix.rotate(rotation * Math.PI / 180);

}

matrix.scale(1 / sampleScale, 1 / sampleScale);

var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);

result.bitmapData.draw(tempBitmap, matrix, null, null, null, true);

result.smoothing = true;

result.x = x;

result.y = y+13;

return result;

}

private function getBitmapByBitmap(displayObject:DisplayObject, sampleScale:Number, x:int, y:int):Bitmap {

var rotation:int = _numericStepper.value;

_drawCanvas.addChild(new Label(this, x, y, "Bitmapにdraw"));

var tempBitmap:Bitmap = new Bitmap(new BitmapData(displayObject.width*sampleScale, displayObject.height*sampleScale, true, 0x0), PixelSnapping.AUTO, true);

var matrix:Matrix = new Matrix();

matrix.scale(sampleScale, sampleScale);

if (!_checkBox.selected) {

matrix.rotate(rotation * Math.PI / 180);

}

tempBitmap.bitmapData.draw(displayObject, matrix, null, null, null, true);

matrix.identity();

if (_checkBox.selected) {

matrix.rotate(rotation * Math.PI / 180);

}

matrix.scale(1 / sampleScale, 1 / sampleScale);

var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);

result.bitmapData.draw(tempBitmap, matrix, null, null, null, true);

result.x = x;

result.y = y+13;

return result;

}

private function getBitmapByBitmapData2(displayObject:DisplayObject, sampleScale:Number, x:int, y:int):Bitmap {

var rotation:int = _numericStepper.value;

_drawCanvas.addChild(new Label(this, x, y, "BitmapDataに2回draw"));

var tempBitmap:BitmapData = new BitmapData(displayObject.width*sampleScale, displayObject.height*sampleScale, true, 0x0);

var matrix:Matrix = new Matrix();

matrix.scale(sampleScale, sampleScale);

if (!_checkBox.selected) {

matrix.rotate(rotation * Math.PI / 180);

}

tempBitmap.draw(displayObject, matrix,null,null,null,true);

matrix.identity();

matrix.scale(1 / Math.sqrt(sampleScale), 1 / Math.sqrt(sampleScale));

if (_checkBox.selected) {

matrix.rotate(0.5 * rotation * Math.PI / 180);

}

var tempBitmap2:BitmapData = new BitmapData(Math.ceil(displayObject.width*Math.sqrt(sampleScale)), Math.ceil(displayObject.height*Math.sqrt(sampleScale)), true, 0x0);

tempBitmap2.draw(tempBitmap, matrix, null, null, null, true);

var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);

result.bitmapData.draw(tempBitmap2, matrix, null, null, null, true);

result.x = x;

result.y = y+13;

return result;

}

private function getBitmapByBitmap2(displayObject:DisplayObject,sampleScale:Number,x:int,y:int):Bitmap {

var rotation:int = _numericStepper.value;

_drawCanvas.addChild(new Label(this, x, y, "Bitmapに2回draw"));

var tempBitmap:Bitmap = new Bitmap(new BitmapData(displayObject.width*sampleScale, displayObject.height*sampleScale, true, 0x0), PixelSnapping.AUTO, true);

var matrix:Matrix = new Matrix();

matrix.scale(sampleScale, sampleScale);

if (!_checkBox.selected) {

matrix.rotate(rotation * Math.PI / 180);

}

tempBitmap.bitmapData.draw(displayObject, matrix,null,null,null,true);

matrix.identity();

matrix.scale(1 / Math.sqrt(sampleScale), 1 / Math.sqrt(sampleScale));

if (_checkBox.selected) {

matrix.rotate(0.5 * rotation * Math.PI / 180);

}

var tempBitmap2:Bitmap = new Bitmap(new BitmapData(Math.ceil(displayObject.width*Math.sqrt(sampleScale)), Math.ceil(displayObject.height*Math.sqrt(sampleScale)), true, 0x0), PixelSnapping.AUTO, true);

tempBitmap2.bitmapData.draw(tempBitmap, matrix,null,null,null,true);

var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);

result.bitmapData.draw(tempBitmap2, matrix,null,null,null,true);

result.x = x;

result.y = y+13;

return result;

}

private function getBitmapByShape(displayObject:DisplayObject, sampleScale:Number, x:int, y:int):Bitmap {

var rotation:int = _numericStepper.value;

_drawCanvas.addChild(new Label(this, x, y, "ShapeにbeginBitmapFill"));

var tempBitmap:Bitmap = new Bitmap(new BitmapData(displayObject.width*sampleScale, displayObject.height*sampleScale, true, 0x0), PixelSnapping.AUTO, true);

var matrix:Matrix = new Matrix();

matrix.scale(sampleScale, sampleScale);

if (!_checkBox.selected) {

matrix.rotate(rotation * Math.PI / 180);

}

tempBitmap.bitmapData.draw(displayObject, matrix, null, null, null, true);

matrix.identity();

if (_checkBox.selected) {

matrix.rotate(rotation * Math.PI / 180);

}

matrix.scale(1 / sampleScale, 1 / sampleScale);

var shape:Shape = new Shape();

shape.graphics.beginBitmapFill(tempBitmap.bitmapData, matrix, false, true);

shape.graphics.drawRect(0, 0, Math.ceil(displayObject.width * sampleScale), Math.ceil(displayObject.height * sampleScale));

shape.graphics.endFill();

var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);

result.bitmapData.draw(shape, null, null, null, null, true);

result.x = x;

result.y = y+13;

return result;

}

private function getBitmapByShape2(displayObject:DisplayObject, sampleScale:Number, x:int, y:int):Bitmap {

var rotation:int = _numericStepper.value;

_drawCanvas.addChild(new Label(this, x, y, "Shapeに2回beginBitmapFill"));

var tempBitmap:Bitmap = new Bitmap(new BitmapData(displayObject.width*sampleScale, displayObject.height*sampleScale, true, 0x0), PixelSnapping.AUTO, true);

var matrix:Matrix = new Matrix();

matrix.scale(sampleScale, sampleScale);

if (!_checkBox.selected) {

matrix.rotate(rotation * Math.PI / 180);

}

tempBitmap.bitmapData.draw(displayObject, matrix, null, null, null, true);

matrix.identity();

if (_checkBox.selected) {

matrix.rotate(0.5 * rotation * Math.PI / 180);

}

matrix.scale(1 / Math.sqrt(sampleScale), 1 / Math.sqrt(sampleScale));

var shape:Shape = new Shape();

shape.graphics.beginBitmapFill(tempBitmap.bitmapData, matrix, false, true);

shape.graphics.drawRect(0, 0, Math.ceil(displayObject.width * Math.sqrt(sampleScale)), Math.ceil(displayObject.height * Math.sqrt(sampleScale)));

shape.graphics.endFill();

var tempBitmapData:BitmapData = new BitmapData(shape.width, shape.height);

tempBitmapData.draw(shape,null, null, null, null, true);

var shape2:Shape = new Shape();

shape2.graphics.beginBitmapFill(tempBitmapData, matrix, false, true);

shape2.graphics.drawRect(0, 0, displayObject.width, displayObject.height);

shape2.graphics.endFill();

var result:Bitmap = new Bitmap(new BitmapData(displayObject.width, displayObject.height, true, 0x0), PixelSnapping.AUTO, true);

result.bitmapData.draw(shape2, null, null, null, null, true);

result.x = x;

result.y = y+13;

return result;

}

private function createStarPoints(tx:Number,ty:Number,numVertices:int, longRadius:Number):Array {

var shortRadius:Number = longRadius * (5 / 13);

var starPoints:Vector.<Number> = new Vector.<Number>();

var angle:Number = Math.PI;

var theta:Number = angle / numVertices;

angle /= -2;

for (var i:int = 0; i < numVertices; i++) {

starPoints.push(longRadius * Math.cos(angle)+tx, longRadius * Math.sin(angle)+ty);

angle += theta;

starPoints.push(shortRadius * Math.cos(angle)+tx, shortRadius * Math.sin(angle)+ty);

angle += theta;

}

starPoints.push(longRadius * Math.cos( -Math.PI/2)+tx, longRadius * Math.sin( -Math.PI/2)+ty);

var pathCommand:Vector.<int> = new Vector.<int>();

var n:int = numVertices * 2 + 1;

for (i = 0; i < n; i++)

{

pathCommand[i] = i == 0?GraphicsPathCommand.MOVE_TO:GraphicsPathCommand.LINE_TO;

}

return [pathCommand, starPoints];

}

import flash.display.Bitmap;

import flash.display.BitmapData;

import flash.display.DisplayObject;

import flash.display.Sprite;

import flash.events.Event;

import flash.geom.Matrix;

import flash.geom.Rectangle;

/**

* ...

* @author umhr

class Loupe extends Sprite

{

private var _bitmap:Bitmap;

public function Loupe()

{

init();

}

private function init():void

{

if (stage) onInit();

else addEventListener(Event.ADDED_TO_STAGE, onInit);

}

private function onInit(event:Event = null):void

{

removeEventListener(Event.ADDED_TO_STAGE, onInit);

// entry point

_bitmap = new Bitmap(new BitmapData(200, 200, false,0xFF000000));

addChild(_bitmap);

}

public function setZoom(displayObject:DisplayObject, mouseX:int, mouseY:int):void {

var bitmapData:BitmapData = new BitmapData(40, 40, false);

bitmapData.draw(displayObject,new Matrix(1,0,0,1,-mouseX+20,-mouseY+20), null, null,new Rectangle(0,0,40,40));

_bitmap.bitmapData.fillRect(new Rectangle(1, 1, 198, 198), 0xFFFFFF);

_bitmap.bitmapData.draw(bitmapData,new Matrix(5,0,0,5), null, null,new Rectangle(1,1,198,198));

}

スマホのブラウザで即参加！

スマホのブラウザで即参加！

スマホのブラウザで即参加！

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