root / trunk / libraries / libRaster / src / org / gvsig / raster / grid / filter / enhancement / BrightnessFilter.java @ 21803
History | View | Annotate | Download (4.01 KB)
1 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
---|---|
2 |
*
|
3 |
* Copyright (C) 2006 IVER T.I. and Generalitat Valenciana.
|
4 |
*
|
5 |
* This program is free software; you can redistribute it and/or
|
6 |
* modify it under the terms of the GNU General Public License
|
7 |
* as published by the Free Software Foundation; either version 2
|
8 |
* of the License, or (at your option) any later version.
|
9 |
*
|
10 |
* This program is distributed in the hope that it will be useful,
|
11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
13 |
* GNU General Public License for more details.
|
14 |
*
|
15 |
* You should have received a copy of the GNU General Public License
|
16 |
* along with this program; if not, write to the Free Software
|
17 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
18 |
*/
|
19 |
package org.gvsig.raster.grid.filter.enhancement; |
20 |
|
21 |
import org.gvsig.raster.buffer.RasterBuffer; |
22 |
import org.gvsig.raster.dataset.IBuffer; |
23 |
import org.gvsig.raster.dataset.Params; |
24 |
import org.gvsig.raster.grid.filter.RasterFilter; |
25 |
/**
|
26 |
* Clase base para los filtros de brillo.
|
27 |
*
|
28 |
* @version 31/05/2007
|
29 |
* @author Miguel ?ngel Querol Carratal? (miguelangel.querol@iver.es)
|
30 |
*/
|
31 |
public class BrightnessFilter extends RasterFilter { |
32 |
public static String[] names = new String[] {"brightness"}; |
33 |
|
34 |
/**
|
35 |
* Variable para guardar el incremento de brillo que se va a aplicar
|
36 |
*/
|
37 |
int incrBrillo = 0; |
38 |
|
39 |
/**
|
40 |
* Constructor. Llama al constructor de la clase base y asigna el
|
41 |
* nombre del filtro.
|
42 |
*/
|
43 |
public BrightnessFilter() {
|
44 |
setName(names[0]);
|
45 |
} |
46 |
|
47 |
/*
|
48 |
* (non-Javadoc)
|
49 |
* @see org.gvsig.raster.grid.filter.RasterFilter#pre()
|
50 |
*/
|
51 |
public void pre() { |
52 |
exec = true;
|
53 |
incrBrillo = ((Integer) params.get("incrBrillo")).intValue(); |
54 |
raster = rasterResult; |
55 |
raster = (RasterBuffer) params.get("raster");
|
56 |
if (raster != null) { |
57 |
height = raster.getHeight(); |
58 |
width = raster.getWidth(); |
59 |
rasterResult = RasterBuffer.getBuffer(IBuffer.TYPE_BYTE, raster.getWidth(), raster.getHeight(), raster.getBandCount(), true);
|
60 |
} |
61 |
} |
62 |
|
63 |
/*
|
64 |
* (non-Javadoc)
|
65 |
* @see org.gvsig.raster.grid.filter.RasterFilter#post()
|
66 |
*/
|
67 |
public void post() { |
68 |
// En caso de que nadie apunte a raster, se liberar? su memoria.
|
69 |
raster = null;
|
70 |
} |
71 |
|
72 |
/**
|
73 |
* Obtiene el incremento de brillo que se est? aplicando
|
74 |
* @return entero que representa el incremento de brillo aplicado.
|
75 |
*/
|
76 |
public int getBrightnessIncrease() { |
77 |
return this.incrBrillo; |
78 |
} |
79 |
|
80 |
/*
|
81 |
* (non-Javadoc)
|
82 |
* @see org.gvsig.raster.grid.filter.IRasterFilter#getGroup()
|
83 |
*/
|
84 |
public String getGroup() { |
85 |
return "realces"; |
86 |
} |
87 |
|
88 |
/*
|
89 |
* (non-Javadoc)
|
90 |
* @see org.gvsig.raster.grid.filter.IRasterFilter#getParams()
|
91 |
*/
|
92 |
public Params getUIParams(String nameFilter) { |
93 |
Params params = new Params();
|
94 |
params.setParam("Brightness",
|
95 |
new Integer(incrBrillo), |
96 |
Params.SLIDER, |
97 |
new String[]{ "-255", "255", "50", "1", "25" }); //min, max, valor defecto, intervalo peque?o, intervalo grande; |
98 |
return params;
|
99 |
} |
100 |
|
101 |
/*
|
102 |
* (non-Javadoc)
|
103 |
* @see org.gvsig.raster.grid.filter.RasterFilter#getInRasterDataType()
|
104 |
*/
|
105 |
public int getInRasterDataType() { |
106 |
return 0; |
107 |
} |
108 |
|
109 |
/*
|
110 |
* (non-Javadoc)
|
111 |
* @see org.gvsig.raster.grid.filter.RasterFilter#getOutRasterDataType()
|
112 |
*/
|
113 |
public int getOutRasterDataType() { |
114 |
return RasterBuffer.TYPE_BYTE;
|
115 |
} |
116 |
|
117 |
/*
|
118 |
* (non-Javadoc)
|
119 |
* @see org.gvsig.raster.grid.filter.enhancement.BrightnessFilter#getResult(java.lang.String)
|
120 |
*/
|
121 |
public Object getResult(String name) { |
122 |
if (name.equals("raster")) { |
123 |
if (!exec)
|
124 |
return this.raster; |
125 |
return this.rasterResult; |
126 |
} |
127 |
return null; |
128 |
} |
129 |
|
130 |
/*
|
131 |
* (non-Javadoc)
|
132 |
* @see org.gvsig.raster.grid.filter.RasterFilter#process(int, int)
|
133 |
*/
|
134 |
public void process(int x, int y) { |
135 |
} |
136 |
|
137 |
/**
|
138 |
* Calcula el brillo para un pixel
|
139 |
* @param px
|
140 |
* @return
|
141 |
*/
|
142 |
protected int calcBrightness(int px) { |
143 |
px += incrBrillo; |
144 |
if (px > 255) |
145 |
px = 255;
|
146 |
else if (px < 0) |
147 |
px = 0;
|
148 |
return px;
|
149 |
} |
150 |
|
151 |
/*
|
152 |
* (non-Javadoc)
|
153 |
* @see org.gvsig.raster.grid.filter.RasterFilter#getName()
|
154 |
*/
|
155 |
public String[] getNames() { |
156 |
return names;
|
157 |
} |
158 |
} |