gvsig-geoprocess / org.gvsig.geoprocess / trunk / org.gvsig.geoprocess / org.gvsig.geoprocess.algorithm / org.gvsig.geoprocess.algorithm.buffer / src / main / java / org / gvsig / geoprocess / algorithm / buffer / BufferOperation.java @ 321
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1 | 237 | cordinyana | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | 175 | cordinyana | *
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4 | 245 | cordinyana | * Copyright (C) 2007-2012 gvSIG Association.
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5 | 175 | cordinyana | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 2
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | 237 | cordinyana | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | 245 | cordinyana | *
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21 | * For any additional information, do not hesitate to contact us
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22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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23 | 175 | cordinyana | */
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24 | package org.gvsig.geoprocess.algorithm.buffer; |
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25 | |||
26 | 218 | cordinyana | import com.vividsolutions.jts.geom.Geometry; |
27 | import com.vividsolutions.jts.geom.GeometryCollection; |
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28 | |||
29 | import es.unex.sextante.dataObjects.IVectorLayer; |
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30 | |||
31 | 175 | cordinyana | import org.cresques.cts.IProjection; |
32 | 218 | cordinyana | |
33 | import org.gvsig.andami.PluginServices; |
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34 | import org.gvsig.andami.ui.mdiManager.IWindow; |
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35 | import org.gvsig.app.project.documents.view.gui.AbstractViewPanel; |
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36 | 175 | cordinyana | import org.gvsig.fmap.dal.exception.DataException; |
37 | import org.gvsig.fmap.dal.feature.EditableFeature; |
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38 | import org.gvsig.fmap.dal.feature.Feature; |
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39 | import org.gvsig.fmap.geom.exception.CreateGeometryException; |
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40 | import org.gvsig.geoprocess.algorithm.base.core.GeometryOperation; |
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41 | import org.gvsig.geoprocess.algorithm.base.util.GeometryUtil; |
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42 | 289 | nbrodin | import org.gvsig.geoprocess.lib.sextante.AbstractSextanteGeoProcess; |
43 | 175 | cordinyana | |
44 | /**
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45 | * Buffer operation
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46 | 218 | cordinyana | *
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47 | 175 | cordinyana | * @author <a href="mailto:nachobrodin@gmail.com">Nacho Brodin</a>
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48 | */
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49 | 218 | cordinyana | public abstract class BufferOperation extends GeometryOperation { |
50 | 175 | cordinyana | |
51 | 218 | cordinyana | public static final byte CAP_SQUARE = 0; |
52 | public static final byte CAP_ROUND = 1; |
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53 | 175 | cordinyana | |
54 | 218 | cordinyana | protected byte capBuffer = CAP_ROUND; |
55 | protected int numberOfRadialBuffers = 1; |
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56 | protected IDistance distance = null; |
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57 | protected int id = 0; |
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58 | |||
59 | protected IVectorLayer layer = null; |
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60 | protected IProjection projection = null; |
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61 | protected double userDistance = 0D; |
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62 | |||
63 | public BufferOperation(IDistance distance, IVectorLayer layer,
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64 | 289 | nbrodin | double userDistance, AbstractSextanteGeoProcess p) {
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65 | super(p);
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66 | 218 | cordinyana | this.distance = distance;
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67 | this.layer = layer;
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68 | this.projection = (IProjection) layer.getCRS();
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69 | this.userDistance = userDistance;
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70 | } |
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71 | |||
72 | /**
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73 | * Verifys if a geometry buffer is null.
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74 | * It is useful when you're working with internal buffers. If the internal
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75 | * buffer distance is greater than the geometry radius, the buffer result
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76 | * will be null.
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77 | *
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78 | * @param newGeometry
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79 | * @return
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80 | */
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81 | protected boolean verifyNilGeometry(Geometry newGeometry) { |
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82 | if (newGeometry instanceof GeometryCollection) { |
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83 | if (((GeometryCollection) newGeometry).getNumGeometries() == 0) { |
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84 | // we have collapsed initial geometry
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85 | return true; |
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86 | } |
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87 | } |
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88 | return false; |
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89 | } |
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90 | |||
91 | /**
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92 | * Adds a new feature
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93 | *
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94 | * @param feature
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95 | * @param newGeom
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96 | * @throws CreateGeometryException
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97 | * @throws DataException
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98 | * @deprecated No es necesario porque no hay diferencia entre las llamadas
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99 | * entre ambos invoke
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100 | */
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101 | protected void addFeature(Feature feature, Geometry newGeom) |
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102 | throws CreateGeometryException, DataException {
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103 | if (!(feature instanceof EditableFeature)) |
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104 | lastEditFeature = persister.addFeature(feature, newGeom); |
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105 | else {
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106 | org.gvsig.fmap.geom.Geometry g = GeometryUtil.jtsToGeom(newGeom); |
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107 | persister |
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108 | .addGeometryToExistingFeature((EditableFeature) feature, g); |
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109 | } |
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110 | } |
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111 | |||
112 | /**
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113 | * Sets type of cap flag
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114 | *
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115 | * @param typeOfCap
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116 | */
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117 | public void setTypeOfCap(byte typeOfCap) { |
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118 | capBuffer = typeOfCap; |
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119 | } |
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120 | |||
121 | /**
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122 | * Sets number of radial rings buffers
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123 | *
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124 | * @param number
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125 | */
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126 | public void setNumberOfRadialBuffers(int number) { |
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127 | numberOfRadialBuffers = number; |
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128 | } |
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129 | |||
130 | /**
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131 | * <p>
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132 | * Gets the measurement unit used by this view port for the map.
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133 | * </p>
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134 | *
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135 | * @return Returns the current map measure unit
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136 | */
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137 | protected int getMapUnits() { |
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138 | IWindow w = PluginServices.getMDIManager().getActiveWindow(); |
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139 | if (!(w instanceof AbstractViewPanel)) { |
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140 | IWindow[] wList = PluginServices.getMDIManager().getAllWindows();
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141 | for (int i = 0; i < wList.length; i++) { |
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142 | if (wList[i] instanceof AbstractViewPanel) |
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143 | w = (IWindow) wList[i]; |
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144 | } |
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145 | } |
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146 | |||
147 | if (w != null && w instanceof AbstractViewPanel) { |
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148 | IProjection proj = |
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149 | ((AbstractViewPanel) w).getMapControl().getViewPort() |
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150 | .getProjection(); |
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151 | if (proj.isProjected())
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152 | return ((AbstractViewPanel) w).getMapControl().getViewPort()
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153 | .getMapUnits(); |
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154 | } |
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155 | return 1; |
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156 | } |
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157 | |||
158 | /**
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159 | * <p>
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160 | * Returns the measurement unit of this view port used for measuring
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161 | * distances and displaying information.
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162 | * </p>
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163 | *
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164 | * @return the measurement unit of this view used for measuring distances
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165 | * and displaying information
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166 | */
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167 | protected int getDistanceUnits() { |
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168 | IWindow w = PluginServices.getMDIManager().getActiveWindow(); |
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169 | if (!(w instanceof AbstractViewPanel)) { |
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170 | IWindow[] wList = PluginServices.getMDIManager().getAllWindows();
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171 | for (int i = 0; i < wList.length; i++) { |
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172 | if (wList[i] instanceof AbstractViewPanel) |
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173 | w = (IWindow) wList[i]; |
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174 | } |
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175 | } |
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176 | |||
177 | if (w != null && w instanceof AbstractViewPanel) |
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178 | return ((AbstractViewPanel) w).getMapControl().getViewPort()
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179 | .getDistanceUnits(); |
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180 | else
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181 | return 1; |
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182 | } |
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183 | |||
184 | 175 | cordinyana | } |