root / trunk / libraries / libRaster / src / org / gvsig / raster / grid / filter / enhancement / BrightnessFilter.java @ 12333
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| 1 | 10740 | nacho | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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| 2 | *
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| 3 | * Copyright (C) 2006 IVER T.I. and Generalitat Valenciana.
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| 4 | *
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| 5 | * This program is free software; you can redistribute it and/or
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| 6 | * modify it under the terms of the GNU General Public License
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| 7 | * as published by the Free Software Foundation; either version 2
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| 8 | * of the License, or (at your option) any later version.
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| 9 | *
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| 10 | * This program is distributed in the hope that it will be useful,
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | * GNU General Public License for more details.
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| 14 | *
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| 15 | * You should have received a copy of the GNU General Public License
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| 16 | * along with this program; if not, write to the Free Software
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| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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| 18 | */
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| 19 | package org.gvsig.raster.grid.filter.enhancement; |
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| 20 | |||
| 21 | 12008 | bsanchez | import org.gvsig.raster.buffer.RasterBuffer; |
| 22 | import org.gvsig.raster.dataset.IBuffer; |
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| 23 | 11652 | bsanchez | import org.gvsig.raster.dataset.Params; |
| 24 | 10740 | nacho | import org.gvsig.raster.grid.filter.RasterFilter; |
| 25 | /**
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| 26 | * Clase basa para los filtros de brillo.
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| 27 | 12333 | bsanchez | *
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| 28 | 11942 | bsanchez | * @version 31/05/2007
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| 29 | 11574 | nacho | * @author Miguel ?ngel Querol Carratal? (miguelangel.querol@iver.es)
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| 30 | 10740 | nacho | */
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| 31 | 11714 | bsanchez | public class BrightnessFilter extends RasterFilter { |
| 32 | 12008 | bsanchez | protected IBuffer rasterResult = null; |
| 33 | public static String[] names = new String[] {"brightness"}; |
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| 34 | 10740 | nacho | |
| 35 | /**
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| 36 | * Variable para guardar el incremento de brillo que se va a aplicar
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| 37 | */
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| 38 | int incrBrillo = 0; |
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| 39 | 11942 | bsanchez | |
| 40 | 11574 | nacho | /**
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| 41 | 12333 | bsanchez | * Constructor. Llama al constructor de la clase base y asigna el
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| 42 | 11574 | nacho | * nombre del filtro.
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| 43 | */
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| 44 | 11942 | bsanchez | public BrightnessFilter() {
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| 45 | 11986 | bsanchez | setName(names[0]);
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| 46 | 10740 | nacho | } |
| 47 | 11942 | bsanchez | |
| 48 | 11899 | bsanchez | /*
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| 49 | * (non-Javadoc)
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| 50 | * @see org.gvsig.raster.grid.filter.RasterFilter#pre()
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| 51 | */
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| 52 | 10740 | nacho | public void pre() { |
| 53 | 12008 | bsanchez | exec = true;
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| 54 | 12138 | bsanchez | raster = (RasterBuffer) params.get("raster");
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| 55 | 12008 | bsanchez | height = raster.getHeight(); |
| 56 | width = raster.getWidth(); |
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| 57 | 12138 | bsanchez | incrBrillo = ((Integer) params.get("incrBrillo")).intValue(); |
| 58 | 10740 | nacho | } |
| 59 | |||
| 60 | 11899 | bsanchez | /*
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| 61 | * (non-Javadoc)
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| 62 | * @see org.gvsig.raster.grid.filter.RasterFilter#post()
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| 63 | */
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| 64 | 10740 | nacho | public void post() { |
| 65 | 11899 | bsanchez | // En caso de que nadie apunte a raster, se liberar? su memoria.
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| 66 | raster = null;
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| 67 | 10740 | nacho | } |
| 68 | 11942 | bsanchez | |
| 69 | 10740 | nacho | /**
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| 70 | * Obtiene el incremento de brillo que se est? aplicando
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| 71 | * @return entero que representa el incremento de brillo aplicado.
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| 72 | */
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| 73 | 11942 | bsanchez | public int getBrightnessIncrease() { |
| 74 | 10740 | nacho | return this.incrBrillo; |
| 75 | } |
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| 76 | |||
| 77 | 11652 | bsanchez | /*
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| 78 | * (non-Javadoc)
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| 79 | * @see org.gvsig.raster.grid.filter.IRasterFilter#getGroup()
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| 80 | */
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| 81 | public String getGroup() { |
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| 82 | return "basics"; |
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| 83 | } |
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| 84 | |||
| 85 | /*
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| 86 | * (non-Javadoc)
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| 87 | * @see org.gvsig.raster.grid.filter.IRasterFilter#getParams()
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| 88 | */
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| 89 | 12030 | bsanchez | public Params getUIParams(String nameFilter) { |
| 90 | 11652 | bsanchez | Params params = new Params();
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| 91 | 11672 | bsanchez | params.setParam("Brightness",
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| 92 | 11652 | bsanchez | incrBrillo + "",
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| 93 | Params.SLIDER, |
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| 94 | 11706 | bsanchez | new String[]{ "-255", "255", "50", "1", "25" }); //min, max, valor defecto, intervalo peque?o, intervalo grande; |
| 95 | 11652 | bsanchez | return params;
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| 96 | } |
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| 97 | |||
| 98 | /*
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| 99 | * (non-Javadoc)
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| 100 | 11714 | bsanchez | * @see org.gvsig.raster.grid.filter.RasterFilter#getInRasterDataType()
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| 101 | */
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| 102 | public int getInRasterDataType() { |
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| 103 | return 0; |
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| 104 | } |
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| 105 | |||
| 106 | /*
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| 107 | * (non-Javadoc)
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| 108 | * @see org.gvsig.raster.grid.filter.RasterFilter#getOutRasterDataType()
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| 109 | */
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| 110 | public int getOutRasterDataType() { |
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| 111 | return 0; |
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| 112 | } |
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| 113 | |||
| 114 | /*
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| 115 | * (non-Javadoc)
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| 116 | 12008 | bsanchez | * @see org.gvsig.raster.grid.filter.enhancement.BrightnessFilter#getResult(java.lang.String)
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| 117 | 11714 | bsanchez | */
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| 118 | public Object getResult(String name) { |
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| 119 | 12008 | bsanchez | if (name.equals("raster")) |
| 120 | return (Object) this.rasterResult; |
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| 121 | 11714 | bsanchez | return null; |
| 122 | } |
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| 123 | |||
| 124 | /*
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| 125 | * (non-Javadoc)
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| 126 | * @see org.gvsig.raster.grid.filter.RasterFilter#process(int, int)
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| 127 | */
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| 128 | public void process(int x, int y) { |
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| 129 | } |
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| 130 | 11942 | bsanchez | |
| 131 | /**
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| 132 | * Calcula el brillo para un pixel
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| 133 | * @param px
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| 134 | * @return
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| 135 | */
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| 136 | protected int calcBrightness(int px) { |
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| 137 | px += incrBrillo; |
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| 138 | if (px > 255) |
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| 139 | px = 255;
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| 140 | else if (px < 0) |
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| 141 | px = 0;
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| 142 | return px;
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| 143 | } |
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| 144 | 12138 | bsanchez | |
| 145 | /*
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| 146 | * (non-Javadoc)
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| 147 | * @see org.gvsig.raster.grid.filter.RasterFilter#getName()
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| 148 | */
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| 149 | public String[] getNames() { |
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| 150 | return names;
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| 151 | } |
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| 152 | 11652 | bsanchez | } |