svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.geometry / org.gvsig.fmap.geometry.jts / src / main / java / org / gvsig / fmap / geom / jts / primitive / curve / spline / AbstractSpline.java @ 42281
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1 | 42267 | fdiaz | /* gvSIG. Desktop Geographic Information System.
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2 | *
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3 | * Copyright ? 2007-2015 gvSIG Association
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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., 51 Franklin Street, Fifth Floor, Boston,
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18 | * MA 02110-1301, USA.
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19 | *
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20 | * For any additional information, do not hesitate to contact us
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21 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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22 | */
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23 | package org.gvsig.fmap.geom.jts.primitive.curve.spline; |
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24 | |||
25 | import java.awt.Shape; |
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26 | import java.awt.geom.AffineTransform; |
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27 | import java.awt.geom.PathIterator; |
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28 | 42281 | fdiaz | import java.util.Collections; |
29 | 42267 | fdiaz | import java.util.Iterator; |
30 | |||
31 | import com.vividsolutions.jts.geom.Coordinate; |
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32 | |||
33 | import org.apache.commons.lang3.StringUtils; |
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34 | import org.cresques.cts.ICoordTrans; |
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35 | import org.slf4j.Logger; |
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36 | import org.slf4j.LoggerFactory; |
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37 | |||
38 | import org.gvsig.fmap.geom.Geometry; |
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39 | import org.gvsig.fmap.geom.GeometryException; |
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40 | import org.gvsig.fmap.geom.aggregate.MultiLine; |
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41 | import org.gvsig.fmap.geom.aggregate.MultiPoint; |
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42 | import org.gvsig.fmap.geom.aggregate.MultiPolygon; |
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43 | import org.gvsig.fmap.geom.exception.ReprojectionRuntimeException; |
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44 | import org.gvsig.fmap.geom.handler.Handler; |
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45 | import org.gvsig.fmap.geom.jts.gputils.DefaultGeneralPathX; |
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46 | import org.gvsig.fmap.geom.jts.gputils.GeneralPathXIterator; |
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47 | import org.gvsig.fmap.geom.jts.primitive.curve.AbstractCurve; |
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48 | import org.gvsig.fmap.geom.jts.primitive.point.Point2D; |
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49 | import org.gvsig.fmap.geom.jts.primitive.point.PointJTS; |
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50 | import org.gvsig.fmap.geom.jts.util.ArrayListCoordinateSequence; |
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51 | import org.gvsig.fmap.geom.jts.util.JTSUtils; |
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52 | import org.gvsig.fmap.geom.jts.util.ReadOnlyCoordinates; |
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53 | 42281 | fdiaz | import org.gvsig.fmap.geom.operation.GeometryOperationException; |
54 | import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException; |
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55 | 42267 | fdiaz | import org.gvsig.fmap.geom.primitive.GeneralPathX; |
56 | import org.gvsig.fmap.geom.primitive.IGeneralPathX; |
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57 | import org.gvsig.fmap.geom.primitive.Point; |
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58 | import org.gvsig.fmap.geom.primitive.Spline; |
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59 | |||
60 | |||
61 | /**
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62 | * @author fdiaz
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63 | *
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64 | */
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65 | public abstract class AbstractSpline extends AbstractCurve implements Spline { |
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66 | |||
67 | /**
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68 | *
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69 | */
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70 | private static final long serialVersionUID = -1562503359430991082L; |
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71 | |||
72 | private static final Logger logger = LoggerFactory.getLogger(AbstractSpline.class); |
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73 | |||
74 | protected ArrayListCoordinateSequence coordinates;
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75 | protected PointJTS anyVertex;
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76 | protected static final double SUBSEGMENTS = 30.0; |
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77 | |||
78 | /**
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79 | *
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80 | */
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81 | protected AbstractSpline(int subtype) { |
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82 | super(Geometry.TYPES.SPLINE, subtype);
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83 | } |
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84 | |||
85 | /**
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86 | *
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87 | */
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88 | public AbstractSpline(int subtype, Coordinate[] coordinates, PointJTS aVertex) { |
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89 | this(subtype);
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90 | this.coordinates = new ArrayListCoordinateSequence(new ReadOnlyCoordinates(coordinates)); |
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91 | anyVertex = aVertex; |
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92 | } |
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93 | |||
94 | |||
95 | /*
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96 | * (non-Javadoc)
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97 | *
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98 | * @see org.gvsig.fmap.geom.jts.GeometryJTS#getJTS()
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99 | */
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100 | public com.vividsolutions.jts.geom.Geometry getJTS() {
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101 | // if (ps[0].getX()==ps[ps.length-1].getX() && ps[0].getY()==ps[ps.length-1].getY())
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102 | // gpx.closePath();
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103 | return JTSUtils.createJTSLineString(getSplineCoordinates());
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104 | } |
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105 | |||
106 | protected abstract ArrayListCoordinateSequence getSplineCoordinates(); |
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107 | |||
108 | |||
109 | static class Spline { |
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110 | private double y[]; |
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111 | private double y2[]; |
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112 | |||
113 | /**
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114 | * The constructor calculates the second derivatives of the interpolating function
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115 | * at the tabulated points xi, with xi = (i, y[i]).
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116 | * Based on numerical recipes in C, http://www.library.cornell.edu/nr/bookcpdf/c3-3.pdf .
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117 | * @param y Array of y coordinates for cubic-spline interpolation.
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118 | */
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119 | public Spline(double y[]) { |
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120 | this.y = y;
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121 | int n = y.length;
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122 | y2 = new double[n]; |
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123 | double u[] = new double[n]; |
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124 | for (int i = 1; i < n - 1; i++) { |
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125 | y2[i] = -1.0 / (4.0 + y2[i - 1]); |
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126 | u[i] = (6.0 * (y[i + 1] - 2.0 * y[i] + y[i - 1]) - u[i - 1]) / (4.0 + y2[i - 1]); |
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127 | } |
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128 | for (int i = n - 2; i >= 0; i--) { |
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129 | y2[i] = y2[i] * y2[i + 1] + u[i];
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130 | } |
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131 | } |
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132 | |||
133 | /**
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134 | * Returns a cubic-spline interpolated value y for the point between
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135 | * point (n, y[n]) and (n+1, y[n+1), with t ranging from 0 for (n, y[n])
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136 | * to 1 for (n+1, y[n+1]).
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137 | * @param n The start point.
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138 | * @param t The distance to the next point (0..1).
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139 | * @return A cubic-spline interpolated value.
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140 | */
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141 | public double fn(int n, double t) { |
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142 | return t * y[n + 1] - ((t - 1.0) * t * ((t - 2.0) * y2[n] - (t + 1.0) * y2[n + 1])) / 6.0 + y[n] - t * y[n]; |
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143 | } |
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144 | |||
145 | } |
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146 | |||
147 | |||
148 | /*
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149 | * (non-Javadoc)
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150 | *
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151 | * @see org.gvsig.fmap.geom.primitive.OrientablePrimitive#getVertex(int)
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152 | */
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153 | public Point getVertex(int index) { |
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154 | anyVertex.setJTSCoordinate(coordinates.get(index)); |
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155 | return anyVertex;
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156 | } |
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157 | |||
158 | /*
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159 | * (non-Javadoc)
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160 | *
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161 | * @see
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162 | * org.gvsig.fmap.geom.primitive.OrientablePrimitive#addVertex(org.gvsig
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163 | * .fmap.geom.primitive.Point)
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164 | */
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165 | public void addVertex(Point point) { |
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166 | point = fixPoint(point); |
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167 | coordinates.add(((PointJTS) point).getJTSCoordinate()); |
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168 | } |
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169 | |||
170 | /*
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171 | * (non-Javadoc)
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172 | *
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173 | * @see
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174 | * org.gvsig.fmap.geom.primitive.Curve#setPoints(org.gvsig.fmap.geom.primitive
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175 | * .Point, org.gvsig.fmap.geom.primitive.Point)
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176 | */
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177 | public void setPoints(Point initialPoint, Point endPoint) { |
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178 | initialPoint = fixPoint(initialPoint); |
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179 | endPoint = fixPoint(endPoint); |
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180 | coordinates.clear(); |
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181 | addVertex(initialPoint); |
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182 | addVertex(endPoint); |
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183 | } |
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184 | |||
185 | /**
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186 | * @param initialPoint
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187 | * @return
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188 | */
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189 | protected abstract Point fixPoint(Point point); |
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190 | |||
191 | /*
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192 | * (non-Javadoc)
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193 | *
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194 | * @see
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195 | * org.gvsig.fmap.geom.primitive.OrientablePrimitive#getCoordinateAt(int,
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196 | * int)
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197 | */
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198 | public double getCoordinateAt(int index, int dimension) { |
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199 | return coordinates.getOrdinate(index, dimension);
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200 | } |
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201 | |||
202 | /*
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203 | * (non-Javadoc)
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204 | *
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205 | * @see
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206 | * org.gvsig.fmap.geom.primitive.OrientablePrimitive#setCoordinateAt(int,
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207 | * int, double)
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208 | */
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209 | public void setCoordinateAt(int index, int dimension, double value) { |
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210 | coordinates.setOrdinate(index, dimension, value); |
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211 | } |
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212 | |||
213 | /*
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214 | * (non-Javadoc)
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215 | *
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216 | * @see org.gvsig.fmap.geom.primitive.OrientablePrimitive#removeVertex(int)
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217 | */
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218 | public void removeVertex(int index) { |
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219 | coordinates.remove(index); |
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220 | } |
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221 | |||
222 | /*
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223 | * (non-Javadoc)
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224 | *
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225 | * @see org.gvsig.fmap.geom.primitive.OrientablePrimitive#getNumVertices()
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226 | */
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227 | public int getNumVertices() { |
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228 | return coordinates.size();
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229 | } |
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230 | |||
231 | /*
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232 | * (non-Javadoc)
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233 | *
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234 | * @see org.gvsig.fmap.geom.primitive.OrientablePrimitive#insertVertex(int,
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235 | * org.gvsig.fmap.geom.primitive.Point)
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236 | */
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237 | public void insertVertex(int index, Point p) { |
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238 | p = fixPoint(p); |
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239 | coordinates.add(index, ((PointJTS) p).getJTSCoordinate()); |
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240 | } |
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241 | |||
242 | /*
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243 | * (non-Javadoc)
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244 | *
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245 | * @see org.gvsig.fmap.geom.primitive.OrientablePrimitive#setVertex(int,
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246 | * org.gvsig.fmap.geom.primitive.Point)
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247 | */
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248 | public void setVertex(int index, Point p) { |
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249 | p = fixPoint(p); |
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250 | coordinates.set(index, ((PointJTS) p).getJTSCoordinate()); |
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251 | } |
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252 | |||
253 | /*
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254 | * (non-Javadoc)
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255 | *
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256 | * @see
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257 | * org.gvsig.fmap.geom.primitive.OrientablePrimitive#setGeneralPath(org.
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258 | * gvsig.fmap.geom.primitive.GeneralPathX)
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259 | */
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260 | public void setGeneralPath(GeneralPathX generalPathX) { |
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261 | |||
262 | PathIterator it = generalPathX.getPathIterator(null); |
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263 | double[] segment = new double[6]; |
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264 | int i = 0; |
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265 | while(!it.isDone()){
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266 | int type = it.currentSegment(segment);
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267 | if(i==0){ |
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268 | switch (type) {
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269 | case IGeneralPathX.SEG_MOVETO:
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270 | Point p = new Point2D(segment[0], segment[1]); |
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271 | p = fixPoint(p); |
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272 | coordinates.add(((PointJTS)p).getJTSCoordinate()); |
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273 | break;
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274 | default:
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275 | String message = StringUtils.replace("Type of segment %(segment)s isn't SEG_MOVETO.","%(segment)s",String.valueOf(i)); |
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276 | logger.warn(message); |
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277 | throw new RuntimeException(message); |
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278 | } |
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279 | } else {
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280 | //Dudo de que los casos SEG_QUADTO y SEG_CUBICTO est?n bien pero se hac?a lo mismo en la librer?a de geometr?as vieja.
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281 | Point p;
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282 | switch (type) {
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283 | case IGeneralPathX.SEG_LINETO:
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284 | p = new Point2D(segment[0], segment[1]); |
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285 | p = fixPoint(p); |
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286 | coordinates.add(((PointJTS)p).getJTSCoordinate()); |
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287 | break;
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288 | case IGeneralPathX.SEG_QUADTO:
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289 | for (int j = 0; j <= 1; j++) { |
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290 | p = new Point2D(segment[i], segment[i+1]); |
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291 | p = fixPoint(p); |
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292 | coordinates.add(((PointJTS) p).getJTSCoordinate()); |
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293 | } |
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294 | break;
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295 | case IGeneralPathX.SEG_CUBICTO:
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296 | for (int j = 0; j <= 2; j++) { |
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297 | p = new Point2D(segment[i], segment[i+1]); |
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298 | p = fixPoint(p); |
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299 | coordinates.add(((PointJTS) p).getJTSCoordinate()); |
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300 | } |
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301 | break;
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302 | case IGeneralPathX.SEG_CLOSE:
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303 | coordinates.add(coordinates.get(0));
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304 | break;
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305 | default:
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306 | String message = StringUtils.replace("The general path has a gap in segment %(segment)s.","%(segment)s",String.valueOf(i)); |
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307 | logger.warn(message); |
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308 | throw new RuntimeException(message); |
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309 | } |
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310 | } |
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311 | it.next(); |
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312 | i++; |
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313 | } |
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314 | } |
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315 | |||
316 | /*
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317 | * (non-Javadoc)
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318 | *
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319 | * @see
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320 | * org.gvsig.fmap.geom.primitive.OrientablePrimitive#addMoveToVertex(org
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321 | * .gvsig.fmap.geom.primitive.Point)
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322 | */
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323 | public void addMoveToVertex(Point point) { |
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324 | throw new UnsupportedOperationException(); |
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325 | } |
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326 | |||
327 | /*
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328 | * (non-Javadoc)
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329 | *
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330 | * @see org.gvsig.fmap.geom.primitive.OrientablePrimitive#closePrimitive()
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331 | */
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332 | public void closePrimitive() { |
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333 | if (!coordinates.get(0).equals(coordinates.get(coordinates.size()))) { |
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334 | coordinates.add(coordinates.get(coordinates.size())); |
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335 | } |
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336 | } |
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337 | |||
338 | /*
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339 | * (non-Javadoc)
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340 | *
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341 | * @see
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342 | * org.gvsig.fmap.geom.primitive.OrientablePrimitive#ensureCapacity(int)
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343 | */
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344 | public void ensureCapacity(int capacity) { |
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345 | coordinates.ensureCapacity(capacity); |
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346 | } |
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347 | |||
348 | /*
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349 | * (non-Javadoc)
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350 | *
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351 | * @see org.gvsig.fmap.geom.Geometry#reProject(org.cresques.cts.ICoordTrans)
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352 | */
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353 | public void reProject(ICoordTrans ct) { |
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354 | if (ct == null) { |
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355 | return;
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356 | } |
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357 | 42271 | fdiaz | for (Iterator<Coordinate> iterator = coordinates.iterator(); iterator.hasNext();) { |
358 | 42267 | fdiaz | Coordinate coordinate = (Coordinate) iterator.next(); |
359 | |||
360 | java.awt.geom.Point2D p = new java.awt.geom.Point2D.Double(coordinate.x, coordinate.y);
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361 | try {
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362 | p = ct.convert(p, p); |
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363 | coordinate.x = p.getX(); |
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364 | coordinate.y = p.getY(); |
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365 | } catch (Exception exc) { |
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366 | /*
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367 | * This can happen when the reprojection lib is unable
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368 | * to reproject (for example the source point
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369 | * is out of the valid range and some computing
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370 | * problem happens)
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371 | */
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372 | throw new ReprojectionRuntimeException(ct.getPOrig(), ct.getPDest(), p, exc); |
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373 | } |
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374 | } |
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375 | } |
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376 | |||
377 | /*
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378 | * (non-Javadoc)
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379 | *
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380 | * @see
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381 | * org.gvsig.fmap.geom.Geometry#transform(java.awt.geom.AffineTransform)
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382 | */
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383 | public void transform(AffineTransform at) { |
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384 | if (at == null) { |
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385 | return;
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386 | } |
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387 | |||
388 | 42271 | fdiaz | for (Iterator<Coordinate> iterator = coordinates.iterator(); iterator.hasNext();) { |
389 | 42267 | fdiaz | Coordinate coordinate = (Coordinate) iterator.next(); |
390 | java.awt.geom.Point2D p = new java.awt.geom.Point2D.Double(coordinate.x, coordinate.y);
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391 | |||
392 | at.transform(p, p); |
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393 | coordinate.x = p.getX(); |
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394 | coordinate.y = p.getY(); |
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395 | } |
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396 | } |
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397 | |||
398 | /*
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399 | * (non-Javadoc)
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400 | *
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401 | * @see org.gvsig.fmap.geom.Geometry#getDimension()
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402 | */
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403 | public int getDimension() { |
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404 | return anyVertex.getDimension();
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405 | } |
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406 | |||
407 | /*
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408 | * (non-Javadoc)
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409 | *
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410 | * @see org.gvsig.fmap.geom.Geometry#getShape(java.awt.geom.AffineTransform)
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411 | */
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412 | public Shape getShape(AffineTransform affineTransform) { |
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413 | return new DefaultGeneralPathX(new SplineIterator(affineTransform),false,0); |
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414 | } |
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415 | |||
416 | /*
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417 | * (non-Javadoc)
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418 | *
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419 | * @see org.gvsig.fmap.geom.Geometry#getShape()
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420 | */
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421 | public Shape getShape() { |
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422 | return getShape(null); |
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423 | } |
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424 | |||
425 | /*
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426 | * (non-Javadoc)
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427 | *
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428 | * @see org.gvsig.fmap.geom.Geometry#getHandlers(int)
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429 | */
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430 | public Handler[] getHandlers(int type) { |
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431 | notifyDeprecated("Calling deprecated method getHandlers of a line");
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432 | throw new UnsupportedOperationException("Calling deprecated method getHandlers of a line"); |
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433 | } |
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434 | |||
435 | /*
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436 | * (non-Javadoc)
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437 | *
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438 | * @see
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439 | * org.gvsig.fmap.geom.Geometry#getPathIterator(java.awt.geom.AffineTransform
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440 | * )
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441 | */
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442 | public PathIterator getPathIterator(AffineTransform at) { |
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443 | SplineIterator pi = new SplineIterator(at);
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444 | return pi;
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445 | } |
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446 | |||
447 | /*
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448 | * (non-Javadoc)
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449 | *
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450 | * @see
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451 | * org.gvsig.fmap.geom.Geometry#getPathIterator(java.awt.geom.AffineTransform
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452 | * , double)
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453 | */
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454 | public PathIterator getPathIterator(AffineTransform at, double flatness) { |
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455 | return getPathIterator(at);
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456 | } |
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457 | |||
458 | /*
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459 | * (non-Javadoc)
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460 | *
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461 | * @see org.gvsig.fmap.geom.Geometry#getGeneralPath()
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462 | */
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463 | public GeneralPathX getGeneralPath() {
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464 | return new DefaultGeneralPathX(new SplineIterator(null),false,0); |
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465 | } |
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466 | |||
467 | public class SplineIterator extends GeneralPathXIterator { |
||
468 | |||
469 | /** Transform applied on the coordinates during iteration */
|
||
470 | private AffineTransform at; |
||
471 | |||
472 | /** True when the point has been read once */
|
||
473 | private boolean done; |
||
474 | private int index = 0; |
||
475 | |||
476 | /**
|
||
477 | * Creates a new PointIterator object.
|
||
478 | *
|
||
479 | * @param p
|
||
480 | * The polygon
|
||
481 | * @param at
|
||
482 | * The affine transform applied to coordinates during
|
||
483 | * iteration
|
||
484 | */
|
||
485 | public SplineIterator(AffineTransform at) { |
||
486 | super(new GeneralPathX()); |
||
487 | if (at == null) { |
||
488 | at = new AffineTransform(); |
||
489 | } |
||
490 | |||
491 | this.at = at;
|
||
492 | done = false;
|
||
493 | } |
||
494 | |||
495 | /**
|
||
496 | * Return the winding rule for determining the interior of the path.
|
||
497 | *
|
||
498 | * @return <code>WIND_EVEN_ODD</code> by default.
|
||
499 | */
|
||
500 | public int getWindingRule() { |
||
501 | return PathIterator.WIND_EVEN_ODD; |
||
502 | } |
||
503 | |||
504 | /**
|
||
505 | * @see java.awt.geom.PathIterator#next()
|
||
506 | */
|
||
507 | public void next() { |
||
508 | done = (getJTS().getCoordinates().length == index++); |
||
509 | } |
||
510 | |||
511 | /**
|
||
512 | * @see java.awt.geom.PathIterator#isDone()
|
||
513 | */
|
||
514 | public boolean isDone() { |
||
515 | return done;
|
||
516 | } |
||
517 | |||
518 | /**
|
||
519 | * @see java.awt.geom.PathIterator#currentSegment(double[])
|
||
520 | */
|
||
521 | public int currentSegment(double[] coords) { |
||
522 | Coordinate[] jtsCoordinates = getJTS().getCoordinates();
|
||
523 | coords[0] = jtsCoordinates[index].x;
|
||
524 | coords[1] = jtsCoordinates[index].y;
|
||
525 | at.transform(coords, 0, coords, 0, 1); |
||
526 | |||
527 | if (index == 0) { |
||
528 | return PathIterator.SEG_MOVETO; |
||
529 | } else {
|
||
530 | return PathIterator.SEG_LINETO; |
||
531 | } |
||
532 | } |
||
533 | |||
534 | /*
|
||
535 | * (non-Javadoc)
|
||
536 | *
|
||
537 | * @see java.awt.geom.PathIterator#currentSegment(float[])
|
||
538 | */
|
||
539 | public int currentSegment(float[] coords) { |
||
540 | Coordinate[] jtsCoordinates = getJTS().getCoordinates();
|
||
541 | coords[0] = (float)jtsCoordinates[index].x; |
||
542 | coords[1] = (float)jtsCoordinates[index].y; |
||
543 | at.transform(coords, 0, coords, 0, 1); |
||
544 | |||
545 | if (index == 0) { |
||
546 | return PathIterator.SEG_MOVETO; |
||
547 | } else {
|
||
548 | return PathIterator.SEG_LINETO; |
||
549 | } |
||
550 | } |
||
551 | } |
||
552 | |||
553 | |||
554 | /*
|
||
555 | * (non-Javadoc)
|
||
556 | *
|
||
557 | * @see org.gvsig.fmap.geom.jts.GeometryJTS#is3D()
|
||
558 | */
|
||
559 | public boolean is3D() { |
||
560 | return anyVertex.is3D();
|
||
561 | } |
||
562 | |||
563 | 42281 | fdiaz | |
564 | /* (non-Javadoc)
|
||
565 | * @see org.gvsig.fmap.geom.jts.GeometryJTS#flip()
|
||
566 | */
|
||
567 | public void flip() throws GeometryOperationNotSupportedException, GeometryOperationException { |
||
568 | Collections.reverse(coordinates);
|
||
569 | } |
||
570 | |||
571 | 42267 | fdiaz | } |