svn-gvsig-desktop / trunk / extensions / extCAD / src / com / iver / cit / gvsig / project / documents / table / operators / Perimeter.java @ 10254
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1 | 10254 | caballero | package com.iver.cit.gvsig.project.documents.table.operators; |
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2 | |||
3 | import java.awt.geom.Point2D; |
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4 | |||
5 | import org.apache.bsf.BSFException; |
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6 | import org.apache.bsf.BSFManager; |
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7 | |||
8 | import com.iver.cit.gvsig.ExpresionFieldExtension; |
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9 | import com.iver.cit.gvsig.fmap.MapContext; |
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10 | import com.iver.cit.gvsig.fmap.ViewPort; |
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11 | import com.iver.cit.gvsig.fmap.core.FShape; |
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12 | import com.iver.cit.gvsig.fmap.core.IGeometry; |
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13 | import com.iver.cit.gvsig.fmap.drivers.DriverIOException; |
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14 | import com.iver.cit.gvsig.fmap.layers.ReadableVectorial; |
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15 | import com.iver.cit.gvsig.project.documents.table.GraphicOperator; |
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16 | import com.iver.cit.gvsig.project.documents.table.IOperator; |
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17 | import com.iver.cit.gvsig.project.documents.table.Index; |
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18 | /**
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19 | * @author Vicente Caballero Navarro
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20 | */
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21 | public class Perimeter extends GraphicOperator{ |
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22 | |||
23 | public String addText(String s) { |
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24 | return s.concat(toString()+"()"); |
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25 | } |
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26 | public double process(Index index) throws DriverIOException { |
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27 | ReadableVectorial adapter = getLayer().getSource(); |
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28 | IGeometry geom=adapter.getShape(index.get()); |
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29 | Double[][] xsys=getXY(geom); |
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30 | double dist = 0; |
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31 | double distAll = 0; |
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32 | |||
33 | ViewPort vp = getLayer().getMapContext().getViewPort(); |
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34 | for (int i = 0; i < (xsys[0].length - 1); i++) { |
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35 | dist = 0;
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36 | |||
37 | Point2D p = new Point2D.Double(xsys[0][i].doubleValue(), xsys[1][i].doubleValue());//vp.toMapPoint(new Point(event.getXs()[i].intValue(), event.getYs()[i].intValue())); |
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38 | Point2D p2 = new Point2D.Double(xsys[0][i + 1].doubleValue(), xsys[1][i + 1].doubleValue());//vp.toMapPoint(new Point(event.getXs()[i + 1].intValue(), event.getYs()[i + 1].intValue())); |
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39 | dist = vp.distanceWorld(p,p2); |
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40 | System.out.println("distancia parcial = "+dist); |
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41 | distAll += dist; |
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42 | } |
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43 | int distanceUnits=vp.getDistanceUnits();
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44 | return distAll/MapContext.CHANGEM[distanceUnits];
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45 | } |
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46 | public void eval(BSFManager interpreter) throws BSFException { |
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47 | interpreter.declareBean("perimeter",this,Perimeter.class); |
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48 | interpreter.eval(ExpresionFieldExtension.BEANSHELL,null,-1,-1,"double perimeter(){return perimeter.process(indexRow);};"); |
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49 | } |
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50 | public String toString() { |
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51 | return "perimeter"; |
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52 | } |
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53 | public boolean isEnable() { |
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54 | if (getLayer()==null) |
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55 | return false; |
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56 | ReadableVectorial adapter = getLayer().getSource(); |
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57 | int type=FShape.POINT;
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58 | try {
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59 | type=adapter.getShapeType(); |
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60 | } catch (DriverIOException e) {
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61 | e.printStackTrace(); |
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62 | } |
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63 | return (getType()==IOperator.NUMBER && (type==FShape.POLYGON || type==FShape.LINE));
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64 | } |
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65 | } |