RDSTextureImageCreator.as

リビジョン 2902, 5.9 kB (コミッタ: dsler, コミット時期: 3 年前)
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1
2	/**
3	* - SirdsAS3 -
4	* RDS/SISステレオグラム生成ライブラリ
5	*
6	* RDSTextureImageCreatorクラス
7	* グレースケール画像(深度マップ画像)からテクスチャパターンのステレオグラムを生成
8	*
9	* @author dsler
10	* @version 1.0.0
11	* @update 2009/07/03
12	*
13	* Licensed under The MIT License
14	* Copyright (c) 2009 dsler
15	* Permission is hereby granted, free of charge, to any person obtaining a copy
16	* of this software and associated documentation files (the "Software"), to deal
17	* in the Software without restriction, including without limitation the rights
18	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
19	* copies of the Software, and to permit persons to whom the Software is
20	* furnished to do so, subject to the following conditions:
21	* The above copyright notice and this permission notice shall be included in
22	* all copies or substantial portions of the Software.
23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
24	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
26	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
28	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
29	* THE SOFTWARE.
30	*/
31
32	package org.libspark.dsler.SirdsAS3
33	{
34	import __AS3__.vec.Vector;
35
36	import flash.display.Bitmap;
37	import flash.display.BitmapData;
38	import flash.display.Sprite;
39	import flash.geom.Point;
40	import flash.geom.Rectangle;
41
42	public class RDSTextureImageCreator implements IRDSImageCreatable
43	{
44	protected var _repeatPattern:BitmapData;
45	protected var _canvasDefinition:Rectangle;
46	protected var _depthRange:int;
47
48	public function RDSTextureImageCreator(canvasWidth:int, canvasHeight:int, repeatPattern:BitmapData, depthRange:int = 20)
49	{
50	_canvasDefinition = new Rectangle(0, 0, canvasWidth, canvasHeight);
51	_repeatPattern = repeatPattern.clone();
52	_depthRange = depthRange;
53	}
54
55	public function create(dep:BitmapData):RDSImage{
56	var rdsImage:Sprite = new Sprite, depthMap:BitmapData = dep.clone();
57	var canvasHeight:int = _canvasDefinition.height, canvasWidth:int = _canvasDefinition.width;
58	var rdsSurface:BitmapData = new BitmapData(canvasWidth, canvasHeight);
59	var pattern:BitmapData = new BitmapData(_repeatPattern.width, 1);
60	var t:Number = (new Date).getTime();
61	for(var i:int = 0; i < canvasHeight; i++){
62	var iterator:int = 0, oldDepth:uint = 0;
63	//新規オリジナルランダムドットパターンを設定
64	pattern = new BitmapData(_repeatPattern.width, 1);
65	pattern.copyPixels(_repeatPattern, new Rectangle(0, i % _repeatPattern.height, _repeatPattern.width, 1), new Point(0, 0));
66	for(var j:int = 0; j < canvasWidth; j++){
67	var newDepth:int = ( ( depthMap.getPixel(j, i) / 0xffffff ) * _depthRange + 0.5 ) >> 0, depthSub:int = newDepth - oldDepth;
68	if(depthSub != 0){
69	//上昇、下降処理(ランダムパターンの更新)
70	if(depthSub > 0) pattern = createDeletedPattern(pattern, iterator % pattern.width, depthSub);
71	else if(depthSub < 0) pattern = createInsertedPattern(pattern, iterator % pattern.width, - depthSub);
72	iterator = 0;
73	}
74	rdsSurface.setPixel(j, i, pattern.getPixel(iterator++ % pattern.width, 0));
75	oldDepth = newDepth;
76	}
77	}
78	trace("convert time: ", ((new Date).getTime()-t)*0.001+"sec");
79	rdsImage.addChild(new Bitmap(rdsSurface));
80	return(new RDSImage(rdsImage, _repeatPattern.width, depthMap));
81	}
82
83	//ある区間を削除したパターンを生成(上昇処理)
84	protected function createDeletedPattern(prevPattern:BitmapData, delPoint:uint, delWidth:uint):BitmapData{
85	var returnPattern:BitmapData = new BitmapData(prevPattern.width - delWidth, 1), bWidth:int = 0, prevPatternWidth:int = prevPattern.width;
86	if(prevPatternWidth - delPoint - delWidth > 0){
87	//通常の場合
88	returnPattern.copyPixels(prevPattern, new Rectangle(delPoint + delWidth, 0, prevPatternWidth - delPoint - delWidth, 1), new Point(0, 0));
89	bWidth = prevPatternWidth - delPoint - delWidth;
90	}else{
91	//削除範囲がパターン幅外に及ぶ場合
92	returnPattern.copyPixels(prevPattern, new Rectangle(delPoint + delWidth - prevPatternWidth, 0, prevPatternWidth - delWidth, 1), new Point(0, 0));
93	}
94	if(bWidth && delPoint > 0) returnPattern.copyPixels(prevPattern, new Rectangle(0, 0, delPoint, 1), new Point(bWidth, 0));
95	return(returnPattern);
96	}
97
98	//ピクセルを追加したパターンを生成(下降処理)
99	protected function createInsertedPattern(prevPattern:BitmapData, edgeAt:int, insertPixelsNum:int):BitmapData{
100	var prevPatternWidth:int = prevPattern.width, returnPattern:BitmapData = new BitmapData(prevPatternWidth + insertPixelsNum, 1), colorSub:Vector.<Number> = new Vector.<Number>, target:uint = prevPattern.getPixel(edgeAt, 0), prev:uint;
101	if(edgeAt != 0) prev = prevPattern.getPixel(edgeAt - 1, 0);
102	else prev = prevPattern.getPixel(prevPatternWidth - 1, 0);
103	colorSub.push( (target >> 16) - (prev >> 16) ); colorSub.push( ( ( target & 0x00ff00 ) >> 8 ) - ( ( prev & 0x00ff00 ) >> 8 ) );
104	colorSub.push( ( target & 0x0000ff ) - ( prev & 0x0000ff ) );
105	//ピクセル追加
106	for(var i:int = 0; i < insertPixelsNum; i++){
107	var r:uint=uint((prev>>16)+colorSub[0](i+1)/(insertPixelsNum+1)), g:uint=uint(((prev&0x00ff00)>>8)+colorSub[1](i+1)/(insertPixelsNum+1)), b:uint=uint((prev&0x0000ff)+colorSub[2]*(i+1)/(insertPixelsNum+1));
108	returnPattern.setPixel(i, 0, ( r << 16 \| g << 8 \| b ));
109	}
110	if(prevPatternWidth - edgeAt - 1 > 0) returnPattern.copyPixels(prevPattern, new Rectangle(edgeAt, 0, prevPatternWidth - edgeAt, 1), new Point(insertPixelsNum, 0));
111	if(edgeAt > 0) returnPattern.copyPixels(prevPattern, new Rectangle(0, 0, edgeAt, 1), new Point(prevPatternWidth - edgeAt + insertPixelsNum, 0));
112	return(returnPattern);
113	}
114	}
115	}

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root/as3/SirdsAS3/org/libspark/dsler/SirdsAS3/RDSTextureImageCreator.as

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