root / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / ViewPort.java @ 285
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| 1 | 213 | fernando | /* Generated by Together */
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| 2 | |||
| 3 | package com.iver.cit.gvsig.fmap; |
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| 4 | |||
| 5 | import java.awt.Color; |
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| 6 | import java.awt.Dimension; |
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| 7 | 234 | fjp | import java.awt.Point; |
| 8 | 213 | fernando | import java.awt.geom.AffineTransform; |
| 9 | 234 | fjp | import java.awt.geom.NoninvertibleTransformException; |
| 10 | 213 | fernando | import java.awt.geom.Point2D; |
| 11 | import java.awt.geom.Rectangle2D; |
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| 12 | import java.util.ArrayList; |
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| 13 | |||
| 14 | public class ViewPort { |
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| 15 | public static int KILOMETROS = 1; |
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| 16 | public static int METROS = 2; |
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| 17 | public static int MILLAS = 3; |
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| 18 | public static int YARDAS = 4; |
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| 19 | public static int PIES = 5; |
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| 20 | public static int PULGADAS = 6; |
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| 21 | |||
| 22 | private Rectangle2D extent; |
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| 23 | private Rectangle2D adjustedExtent; |
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| 24 | private ExtentHistory extents = new ExtentHistory(); |
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| 25 | private Dimension imageSize; |
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| 26 | private AffineTransform trans = new AffineTransform(); |
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| 27 | private int distanceUnits = METROS; |
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| 28 | private int mapUnits = METROS; |
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| 29 | |||
| 30 | private ArrayList extentListeners; |
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| 31 | private Point2D offset = new Point2D.Double(0, 0); |
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| 32 | private Rectangle2D clip; |
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| 33 | private Color backColor = Color.WHITE; |
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| 34 | |||
| 35 | 237 | fjp | private double dist1pixel; |
| 36 | private double dist3pixel; |
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| 37 | |||
| 38 | |||
| 39 | 213 | fernando | private double scale; |
| 40 | |||
| 41 | public boolean addExtentListener(ExtentListener arg0) { |
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| 42 | return extentListeners.add(arg0);
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| 43 | } |
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| 44 | |||
| 45 | public boolean removeExtentListener(ExtentListener arg0) { |
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| 46 | return extentListeners.remove(arg0);
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| 47 | } |
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| 48 | |||
| 49 | public int fromMapDistance(double d) { |
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| 50 | 234 | fjp | Point2D.Double pWorld = new Point2D.Double(1, 1); |
| 51 | Point2D.Double pScreen = new Point2D.Double(); |
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| 52 | |||
| 53 | double nuevoX;
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| 54 | double nuevoY;
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| 55 | double cX;
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| 56 | double cY;
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| 57 | |||
| 58 | try {
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| 59 | trans.deltaTransform(pWorld, pScreen); |
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| 60 | } catch (Exception e) { |
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| 61 | System.err.print(e.getMessage());
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| 62 | } |
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| 63 | |||
| 64 | return (int) (d * pScreen.x); |
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| 65 | 213 | fernando | } |
| 66 | |||
| 67 | public Point2D fromMapPoint(double x, double y) { |
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| 68 | 234 | fjp | Point2D.Double pWorld = new Point2D.Double(x, y); |
| 69 | Point2D.Double pScreen = new Point2D.Double(); |
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| 70 | |||
| 71 | double nuevoX;
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| 72 | double nuevoY;
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| 73 | double cX;
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| 74 | double cY;
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| 75 | |||
| 76 | try {
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| 77 | trans.transform(pWorld, pScreen); |
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| 78 | } catch (Exception e) { |
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| 79 | System.err.print(e.getMessage());
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| 80 | } |
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| 81 | |||
| 82 | return pScreen;
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| 83 | 213 | fernando | } |
| 84 | |||
| 85 | public Point2D toMapPoint(int x, int y) { |
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| 86 | 234 | fjp | Point pScreen = new Point(x, y); |
| 87 | return toMapPoint(pScreen);
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| 88 | 213 | fernando | } |
| 89 | |||
| 90 | public double toMapDistance(int d) { |
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| 91 | 285 | vcaballero | double dist = d / trans.getScaleX();
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| 92 | return dist;
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| 93 | 213 | fernando | } |
| 94 | |||
| 95 | public Point2D toMapPoint(Point2D pScreen) { |
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| 96 | 234 | fjp | Point2D.Double pWorld = new Point2D.Double(); |
| 97 | AffineTransform at;
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| 98 | |||
| 99 | try {
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| 100 | at = trans.createInverse(); |
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| 101 | at.transform(pScreen, pWorld); |
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| 102 | } catch (NoninvertibleTransformException e) { |
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| 103 | throw new RuntimeException(e); |
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| 104 | } |
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| 105 | |||
| 106 | return pWorld;
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| 107 | 213 | fernando | } |
| 108 | |||
| 109 | public void setPreviousExtent() { |
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| 110 | } |
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| 111 | |||
| 112 | public Rectangle2D getExtent() { |
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| 113 | return extent;
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| 114 | } |
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| 115 | |||
| 116 | public void setExtent(Rectangle2D r) { |
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| 117 | 225 | vcaballero | |
| 118 | //Esto comprueba que el extent no es de anchura o altura = "0"
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| 119 | //y si es as? lo redimensiona.
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| 120 | 221 | vcaballero | if (r.getWidth()==0 || r.getHeight()==0){ |
| 121 | extent=new Rectangle2D.Double(r.getMinX()-0.1,r.getMinY()-0.1,r.getWidth()+0.2,r.getHeight()+0.2); |
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| 122 | }else{
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| 123 | 213 | fernando | extent = r; |
| 124 | 221 | vcaballero | } |
| 125 | 213 | fernando | //TODO calcular la escala sin usar setScale
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| 126 | |||
| 127 | //Calcula la transformaci?n af?n
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| 128 | calculateAffineTransform(); |
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| 129 | } |
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| 130 | |||
| 131 | public void setScale(double scale) { |
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| 132 | this.scale = scale;
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| 133 | |||
| 134 | //TODO calcular el extent sin usar setExtent
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| 135 | |||
| 136 | //Calcula la transformaci?n af?n
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| 137 | calculateAffineTransform(); |
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| 138 | } |
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| 139 | |||
| 140 | /**
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| 141 | * Devuelve la escala. Debe estar siempre actualizada y
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| 142 | * no calcularse nunca aqu? pues se utiliza en el dibujado
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| 143 | * para cada geometr?a
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| 144 | * @return
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| 145 | */
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| 146 | public double getScale() { |
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| 147 | return scale;
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| 148 | } |
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| 149 | |||
| 150 | /**
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| 151 | * @return
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| 152 | */
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| 153 | public AffineTransform getAffineTransform() { |
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| 154 | return trans;
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| 155 | } |
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| 156 | /**
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| 157 | * @return Returns the imageSize.
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| 158 | */
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| 159 | public Dimension getImageSize() { |
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| 160 | return imageSize;
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| 161 | } |
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| 162 | /**
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| 163 | * @param imageSize The imageSize to set.
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| 164 | */
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| 165 | public void setImageSize(Dimension imageSize) { |
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| 166 | this.imageSize = imageSize;
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| 167 | calculateAffineTransform(); |
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| 168 | } |
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| 169 | |||
| 170 | /**
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| 171 | *
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| 172 | */
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| 173 | private void calculateAffineTransform() { |
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| 174 | if ((imageSize == null) || (extent == null)) return; |
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| 175 | |||
| 176 | AffineTransform escalado = new AffineTransform(); |
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| 177 | AffineTransform translacion = new AffineTransform(); |
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| 178 | |||
| 179 | double escalaX;
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| 180 | double escalaY;
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| 181 | |||
| 182 | escalaX = imageSize.getWidth() / extent.getWidth(); |
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| 183 | escalaY = imageSize.getHeight() / extent.getHeight(); |
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| 184 | |||
| 185 | adjustedExtent = new Rectangle2D.Double(); |
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| 186 | if (escalaX < escalaY) {
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| 187 | scale = escalaX; |
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| 188 | adjustedExtent.setRect(extent.getX(), extent.getY(), extent.getWidth(), imageSize.getHeight() / scale); |
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| 189 | } else {
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| 190 | scale = escalaY; |
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| 191 | adjustedExtent.setRect(extent.getX(), extent.getY(), imageSize.getWidth() / scale, extent.getHeight()); |
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| 192 | } |
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| 193 | |||
| 194 | translacion.setToTranslation(-adjustedExtent.getX(), -adjustedExtent.getY() - |
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| 195 | adjustedExtent.getHeight()); |
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| 196 | escalado.setToScale(scale, -scale); |
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| 197 | |||
| 198 | AffineTransform offsetTrans = new AffineTransform(); |
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| 199 | offsetTrans.setToTranslation(offset.getX(), offset.getY()); |
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| 200 | |||
| 201 | trans.setToIdentity(); |
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| 202 | trans.concatenate(offsetTrans); |
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| 203 | trans.concatenate(escalado); |
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| 204 | |||
| 205 | trans.concatenate(translacion); |
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| 206 | 237 | fjp | |
| 207 | |||
| 208 | // Calculamos las distancias de 1 pixel y 3 pixel con esa transformaci?n
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| 209 | // de coordenadas, de forma que est?n precalculadas para cuando las necesitemos
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| 210 | AffineTransform at;
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| 211 | try {
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| 212 | at = trans.createInverse(); |
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| 213 | java.awt.Point pPixel = new java.awt.Point(1, 1); |
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| 214 | Point2D.Float pProv = new Point2D.Float(); |
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| 215 | at.deltaTransform(pPixel, pProv); |
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| 216 | |||
| 217 | dist1pixel = pProv.x; |
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| 218 | dist3pixel = 3 * pProv.x;
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| 219 | |||
| 220 | } catch (NoninvertibleTransformException e) { |
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| 221 | e.printStackTrace(); |
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| 222 | } |
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| 223 | |||
| 224 | 213 | fernando | } |
| 225 | |||
| 226 | public void setBackColor(Color c) { |
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| 227 | backColor = c; |
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| 228 | } |
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| 229 | |||
| 230 | public Color getBackColor() { |
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| 231 | return backColor;
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| 232 | } |
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| 233 | /**
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| 234 | * @return Returns the adjustedExtent.
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| 235 | */
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| 236 | public Rectangle2D getAdjustedExtent() { |
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| 237 | return adjustedExtent;
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| 238 | } |
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| 239 | /**
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| 240 | * @return Returns the distanceUnits.
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| 241 | */
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| 242 | public int getDistanceUnits() { |
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| 243 | return distanceUnits;
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| 244 | } |
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| 245 | /**
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| 246 | * @param distanceUnits The distanceUnits to set.
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| 247 | */
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| 248 | public void setDistanceUnits(int distanceUnits) { |
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| 249 | this.distanceUnits = distanceUnits;
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| 250 | } |
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| 251 | /**
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| 252 | * @return Returns the mapUnits.
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| 253 | */
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| 254 | public int getMapUnits() { |
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| 255 | return mapUnits;
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| 256 | } |
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| 257 | /**
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| 258 | * @param mapUnits The mapUnits to set.
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| 259 | */
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| 260 | public void setMapUnits(int mapUnits) { |
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| 261 | this.mapUnits = mapUnits;
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| 262 | 214 | fernando | } |
| 263 | |||
| 264 | public int getImageWidth(){ |
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| 265 | return imageSize.width;
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| 266 | 213 | fernando | } |
| 267 | 214 | fernando | |
| 268 | public int getImageHeight(){ |
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| 269 | return imageSize.height;
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| 270 | } |
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| 271 | 237 | fjp | public double getDist1pixel() { |
| 272 | return dist1pixel;
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| 273 | } |
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| 274 | public void setDist1pixel(double dist1pixel) { |
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| 275 | this.dist1pixel = dist1pixel;
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| 276 | } |
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| 277 | public double getDist3pixel() { |
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| 278 | return dist3pixel;
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| 279 | } |
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| 280 | public void setDist3pixel(double dist3pixel) { |
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| 281 | this.dist3pixel = dist3pixel;
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| 282 | } |
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| 283 | 277 | fernando | /**
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| 284 | * @return Returns the extents.
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| 285 | */
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| 286 | public ExtentHistory getExtents() {
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| 287 | return extents;
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| 288 | } |
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| 289 | |||
| 290 | /**
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| 291 | *
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| 292 | */
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| 293 | public void setExtentPrev() { |
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| 294 | setExtent(extents.removePrev()); |
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| 295 | } |
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| 296 | 213 | fernando | } |