topical media & game development
student-ar-org-libspark-flartoolkit-core-labeling-FLARLabelingImageBitmapData.ax
student-ar-org-libspark-flartoolkit-core-labeling-FLARLabelingImageBitmapData.ax
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/*
* PROJECT: FLARToolKit
* --------------------------------------------------------------------------------
* This work is based on the NyARToolKit developed by
* R.Iizuka (nyatla)
* http://nyatla.jp/nyatoolkit/
*
* The FLARToolKit is ActionScript 3.0 version ARToolkit class library.
* Copyright (C)2008 Saqoosha
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this framework; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For further information please contact.
* http://www.libspark.org/wiki/saqoosha/FLARToolKit
* <saq(at)saqoosha.net>
*
*/
package org.libspark.flartoolkit.core.labeling {
import org.libspark.flartoolkit.FLARException;
import org.libspark.flartoolkit.core.raster.FLARRaster_BasicClass;
import org.libspark.flartoolkit.core.rasterreader.IFLARBufferReader;
import org.libspark.flartoolkit.core.types.FLARIntSize;
import flash.display.BitmapData;
public class @ax-student-ar-org-libspark-flartoolkit-core-labeling-FLARLabelingImageBitmapData extends FLARRaster_BasicClass implements IFLARLabelingImage {
private static const MAX_LABELS:int = 1024;// * 32;
// protected var _ref_buf:Array; // int[][]
protected var _labeled:BitmapData;
private var _buffer_reader:IFLARBufferReader;
protected var _label_list:FLARLabelingLabelStack;
// protected var _index_table:Array; // int[]
protected var _is_index_table_enable:Boolean;
public function @ax-student-ar-org-libspark-flartoolkit-core-labeling-FLARLabelingImageBitmapData(i_width:int, i_height:int) {
super(new FLARIntSize(i_width, i_height));
// this._ref_buf = ArrayUtil.createJaggedArray(i_height, i_width);//this._ref_buf = new int[i_height][i_width];
this._labeled = new BitmapData(i_width, i_height, false, 0x0);
this._label_list = new FLARLabelingLabelStack(MAX_LABELS);
// this._index_table = new Array(MAX_LABELS);//new int[MAX_LABELS];
this._is_index_table_enable = false;
// this._buffer_reader = new FLARBufferReader(this._ref_buf, FLARBufferFormat.BUFFERFORMAT_INT2D);
return;
}
public override function getBufferReader():IFLARBufferReader {
return this._buffer_reader;
}
public function get bitmapData():BitmapData {
return this._labeled;
}
ラベリング結果がインデックステーブルを持つ場合、その配列を返します。
持たない場合、nullを返します。
値がnullの時はラベル番号そのものがラスタに格納されていますが、
null以外の時はラスタに格納されているのはインデクス番号です。
インデクス番号とラベル番号の関係は、以下の式で表されます。
ラベル番号:=value[インデクス番号]
returns: int[]
public function getIndexArray():Array {
// return this._is_index_table_enable ? this._index_table : null;
return null;
}
public function getLabelStack():FLARLabelingLabelStack {
return this._label_list;
}
public function reset(i_label_index_enable:Boolean):void {
// assert(i_label_index_enable==true);//非ラベルモードは未実装
this._label_list.clear();
this._is_index_table_enable = i_label_index_enable;
return;
}
protected const _getContour_xdir:Array = [0, 1, 1, 1, 0,-1,-1,-1]; // int[]
protected const _getContour_ydir:Array = [-1,-1, 0, 1, 1, 1, 0,-1]; // int[]
i_labelのラベルの、クリップ領域が上辺に接しているx座標を返します。
parameter: i_index
@return
protected function getTopClipTangentX(i_label:FLARLabelingLabel):int {
var w:int;
var i_label_id:int = i_label.id;
// var index_table:Array = this._index_table; // int[]
// var limage_j:Array = this._ref_buf[i_label.clip_t]; // int[]
const clip1:int = i_label.clip_r;
// p1=ShortPointer.wrap(limage,j*xsize+clip.get());//p1 =&(limage[j*xsize+clip[0]]);
var i:int;
for (i = i_label.clip_l; i <= clip1; i++) { // for( i = clip[0]; i <=clip[1]; i++, p1++ ) {
// w = limage_j[i];
w = this._labeled.getPixel(i, i_label.clip_t);
if (w > 0 && w == i_label_id) {
return i;
}
}
//あれ？見つからないよ？
throw new FLARException();
}
i_index番目のラベルの輪郭線を配列に返します。
parameter: i_index
parameter: i_array_size
parameter: o_coord_x int[]
parameter: o_coord_y int[]
@return
輪郭線の長さを返します。
@throws FLARException
public function getContour(i_index:int, i_array_size:int, o_coord_x:Array, o_coord_y:Array):int {
const xdir:Array = this._getContour_xdir; // static int xdir[8] = { 0,1, 1, 1, 0,-1,-1,-1};
const ydir:Array = this._getContour_ydir; // static int ydir[8] = {-1,-1,0, 1, 1, 1, 0,-1};
const label:FLARLabelingLabel = this._label_list.getItem(i_index) as FLARLabelingLabel;
var i:int;
//クリップ領域の上端に接しているポイントを得る。
var sx:int = getTopClipTangentX(label);
var sy:int = label.clip_t;
var coord_num:int = 1; // marker_info2->coord_num = 1;
o_coord_x[0] = sx; // marker_info2->x_coord[0] = sx;
o_coord_y[0] = sy; // marker_info2->y_coord[0] = sy;
var dir:int = 5;
// var limage:Array = this._ref_buf; // int[][]
var c:int = o_coord_x[0];
var r:int = o_coord_y[0];
for (;;) {
dir = (dir + 5) % 8;
for (i = 0; i < 8; i++) {
// if (limage[r + ydir[dir]][c + xdir[dir]] > 0) {
if (this._labeled.getPixel(c + xdir[dir], r + ydir[dir]) > 0) {
break;
}
dir = (dir + 1) % 8;
}
if (i == 8) {
//8方向全て調べたけどラベルが無いよ？
throw new FLARException();// return(-1);
}
// xcoordとycoordをc,rにも保存
c = c + xdir[dir]; // marker_info2->x_coord[marker_info2->coord_num]=marker_info2->x_coord[marker_info2->coord_num-1]+ xdir[dir];
r = r + ydir[dir]; // marker_info2->y_coord[marker_info2->coord_num]=marker_info2->y_coord[marker_info2->coord_num-1]+ ydir[dir];
o_coord_x[coord_num] = c; // marker_info2->x_coord[marker_info2->coord_num]=marker_info2->x_coord[marker_info2->coord_num-1]+ xdir[dir];
o_coord_y[coord_num] = r; // marker_info2->y_coord[marker_info2->coord_num]=marker_info2->y_coord[marker_info2->coord_num-1]+ ydir[dir];
// 終了条件判定
if (c == sx && r == sy) {
coord_num++;
break;
}
coord_num++;
if (coord_num == i_array_size) {
// if( marker_info2.coord_num ==Config.AR_CHAIN_MAX-1 ){
//輪郭が末端に達した
return coord_num;
}
}
return coord_num;
}
}
}
(C) Æliens
04/09/2009
You may not copy or print any of this material without explicit permission of the author or the publisher.
In case of other copyright issues, contact the author.
