svn-gvsig-desktop / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / drivers / shp / DemoSHPDriver.java @ 408
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package com.iver.cit.gvsig.fmap.drivers.shp; |
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import com.iver.cit.gvsig.fmap.core.FShape; |
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import com.iver.cit.gvsig.fmap.core.GeneralPathX; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.core.ShapeFactory; |
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import com.iver.cit.gvsig.fmap.drivers.BoundedShapes; |
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import com.iver.cit.gvsig.fmap.drivers.VectorialFileDriver; |
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import com.iver.cit.gvsig.fmap.layers.FRecordset; |
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import java.awt.geom.Point2D; |
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import java.awt.geom.Rectangle2D; |
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import java.io.File; |
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import java.io.FileInputStream; |
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import java.io.IOException; |
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import java.nio.ByteBuffer; |
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import java.nio.ByteOrder; |
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import java.nio.channels.FileChannel; |
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/**
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* DOCUMENT ME!
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*
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* @author $author$
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*/
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public class DemoSHPDriver implements VectorialFileDriver, BoundedShapes { |
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private File file; |
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private ByteBuffer bb; |
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private FileChannel channel; |
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private FileInputStream fin; |
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private int type; |
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private int[] m_posShapes; |
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private int numReg; |
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private Rectangle2D extent; |
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/**
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* DOCUMENT ME!
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*
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* @throws IOException
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*
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* @see com.iver.cit.gvsig.fmap.drivers.VectorialFileDriver#close()
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*/
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public void close() throws IOException { |
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IOException ret = null; |
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try {
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channel.close(); |
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} catch (IOException e) { |
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ret = e; |
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} finally {
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try {
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fin.close(); |
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} catch (IOException e1) { |
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ret = e1; |
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} |
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} |
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if (ret != null) { |
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throw ret;
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} |
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} |
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/**
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* @see com.iver.cit.gvsig.fmap.drivers.VectorialFileDriver#open(java.io.File)
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*/
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public void open(File f) throws IOException { |
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file = f; |
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fin = new FileInputStream(f); |
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// Open the file and then get a channel from the stream
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channel = fin.getChannel(); |
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long size = channel.size();
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// Get the file's size and then map it into memory
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bb = channel.map(FileChannel.MapMode.READ_ONLY, 0, size); |
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} |
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/**
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* DOCUMENT ME!
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*
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* @param index DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*
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* @throws IOException
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*
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* @see com.iver.cit.gvsig.fmap.drivers.VectorialFileDriver#getShape(int)
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*/
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/* public FShape getShapeByID(int ID) {
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Point2D.Double p = new Point2D.Double();
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Point2D.Double pAnt = null;
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int numParts;
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int numPoints;
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int i;
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int j;
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int numReg;
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int numeroPuntos;
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int hasta;
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int desde;
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Rectangle2D.Double BoundingBox = new Rectangle2D.Double();
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SHPShape shapeShp=null;
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FShape resulShape = null;
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try {
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bb.position(m_posShapes[ID]);
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bb.order(ByteOrder.LITTLE_ENDIAN);
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int tipoShape = bb.getInt();
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m_shapeType = tipoShape;
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// retrieve that shape.
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// tempRecord.setShape(readShape(tempShapeType, tempContentLength, in));
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if (tipoShape == FConstant.SHAPE_TYPE_POINT) {
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p = readPoint(bb);
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resulShape = new FShape(new FPoint(p.getX(),p.getY()),FConstant.SHAPE_TYPE_POINT);
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//Comprobaci?n punto.
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//System.err.println("p.x = "+p.x);
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//System.err.println("p.y = "+p.y);
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} else if ((tipoShape == FConstant.SHAPE_TYPE_POLYLINE) ||
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(tipoShape == FConstant.SHAPE_TYPE_POLYGON)) {
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// BoundingBox
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BoundingBox = readRectangle(bb);
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numParts = bb.getInt();
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numPoints = bb.getInt();
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// part indexes.
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// Geometry geom = GeometryFactory.toGeometryArray();
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GeneralPathX elShape = new GeneralPathX(GeneralPathX.WIND_EVEN_ODD,
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numPoints);
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int[] tempParts = new int[numParts];
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for (i = 0; i < numParts; i++) {
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tempParts[i] = bb.getInt();
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}
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j = 0;
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///Line2D.Double line2D;
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FPoint[] points=new FPoint[numPoints];
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for (i = 0; i < numPoints; i++) {
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p=readPoint(bb);
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points[i] = new FPoint(p.x,p.y);
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// System.out.println("x= " + p.x + " y=" + p.y);
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// System.out.println("x= " + (float) p.x + " y=" + (float) p.y);
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if (i == tempParts[j]) {
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elShape.moveTo(p.x, p.y);
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if (j < (numParts - 1)) {
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j++;
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}
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} else {
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elShape.lineTo(p.x, p.y);
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}
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}
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//FGeometry pol=new FPolyLine(points,tempParts,BoundingBox);
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resulShape = new FShape(tipoShape,elShape);
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} else if (tipoShape == FConstant.SHAPE_TYPE_MULTIPOINT) {
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// BoundingBox
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BoundingBox = readRectangle(bb);
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numPoints = bb.getInt();
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FPoint[] tempPoints = new FPoint[numPoints];
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for (i = 0; i < numPoints; i++) {
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Point2D p2=readPoint(bb);
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tempPoints[i] = new FPoint(p2.getX(),p2.getY(),0);
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}
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FMultiPoint multipoint = new FMultiPoint(tempPoints,BoundingBox);
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resulShape = new FShape(multipoint,tipoShape);
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} else if (tipoShape == FConstant.SHAPE_TYPE_POINTZ) {
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FPoint p3d = new FPoint();
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p3d.read(bb);
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resulShape = new FShape(p3d,tipoShape);
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} else if ((tipoShape == FConstant.SHAPE_TYPE_POLYLINEZ) ||
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(tipoShape == FConstant.SHAPE_TYPE_POLYGONZ)) {
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// BoundingBox
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BoundingBox = readRectangle(bb);
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numParts = bb.getInt();
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numPoints = bb.getInt();
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// part indexes.
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// Geometry geom = GeometryFactory.toGeometryArray();
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GeneralPathX elShape = new GeneralPathX(GeneralPathX.WIND_EVEN_ODD,
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numPoints);
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int[] tempParts = new int[numParts];
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for (i = 0; i < numParts; i++) {
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tempParts[i] = bb.getInt();
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}
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j = 0;
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//Line2D.Double line2D;
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FPoint[] points=new FPoint[numPoints];
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for (i = 0; i < numPoints; i++) {
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p = readPoint(bb);
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points[i]=new FPoint(p.x,p.y);
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if (i == tempParts[j]) {
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elShape.moveTo(p.x, p.y);
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if (j < (numParts - 1)) {
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j++;
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}
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} else {
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elShape.lineTo(p.x, p.y);
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}
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}
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double[] boxZ = new double[2];
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boxZ[0] = bb.getDouble();
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boxZ[1] = bb.getDouble();
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double[] pZ = new double[numPoints];
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for (i = 0; i < numPoints; i++) {
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pZ[i] = bb.getDouble();
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}
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//FGeometry pol=new FPolyLine(points,tempParts,BoundingBox);
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resulShape = new FShape(tipoShape, elShape, pZ);
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} else if (tipoShape == FConstant.SHAPE_TYPE_MULTIPOINTZ) {
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// BoundingBox
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BoundingBox = readRectangle(bb);
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numPoints = bb.getInt();
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FPoint[] tempPoints3D = new FPoint[numPoints];
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for (i = 0; i < numPoints; i++) {
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tempPoints3D[i] = new FPoint();
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tempPoints3D[i].read(bb);
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}
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FMultiPoint multipoint3D = new FMultiPoint(tempPoints3D,BoundingBox);
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resulShape = new FShape(multipoint3D,tipoShape);
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}
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} catch (Exception e) {
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System.err.println("Fallo en getShapeByID. ID=" + ID +
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" m_posShapes[ID]=" + m_posShapes[ID]);
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System.err.println("getShapeByID: " + e.getMessage());
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e.printStackTrace();
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}
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return resulShape;
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}
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*/
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public IGeometry getShape(int index) throws IOException { |
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Point2D.Double p = new Point2D.Double(); |
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Point2D.Double pAnt = null; |
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int numParts;
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int numPoints;
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int i;
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int j;
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int numReg;
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int numeroPuntos;
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int hasta;
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int desde;
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int shapeType;
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//Rectangle2D.Double BoundingBox;
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bb.position(m_posShapes[index]); |
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bb.order(ByteOrder.LITTLE_ENDIAN);
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///bb.position(bb.position()+4);
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shapeType = bb.getInt(); |
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// retrieve that shape.
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// tempRecord.setShape(readShape(tempShapeType, tempContentLength, in));
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switch (type) {
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case (SHP.POINT2D):
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p = readPoint(bb); |
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return ShapeFactory.createPoint2D(p.getX(), p.getY());
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case (SHP.POLYLINE2D):
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//BoundingBox = readRectangle(bb);
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//bb.getDouble();
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//bb.getDouble();
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//bb.getDouble();
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//bb.getDouble();
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bb.position(bb.position() + 32);
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numParts = bb.getInt(); |
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numPoints = bb.getInt(); |
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// part indexes.
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// Geometry geom = GeometryFactory.toGeometryArray();
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GeneralPathX elShape = new GeneralPathX(GeneralPathX.WIND_EVEN_ODD,
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numPoints); |
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int[] tempParts = new int[numParts]; |
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for (i = 0; i < numParts; i++) { |
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tempParts[i] = bb.getInt(); |
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} |
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j = 0;
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for (i = 0; i < numPoints; i++) { |
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p = readPoint(bb); |
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if (i == tempParts[j]) {
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elShape.moveTo(p.x, p.y); |
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if (j < (numParts - 1)) { |
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j++; |
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} |
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} else {
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elShape.lineTo(p.x, p.y); |
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} |
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} |
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return ShapeFactory.createPolyline2D(elShape);
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case (SHP.POLYGON2D):
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// BoundingBox = readRectangle(bb);
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bb.getDouble(); |
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bb.getDouble(); |
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bb.getDouble(); |
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bb.getDouble(); |
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numParts = bb.getInt(); |
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numPoints = bb.getInt(); |
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// part indexes.
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// Geometry geom = GeometryFactory.toGeometryArray();
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elShape = new GeneralPathX(GeneralPathX.WIND_EVEN_ODD, numPoints);
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tempParts = new int[numParts]; |
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for (i = 0; i < numParts; i++) { |
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tempParts[i] = bb.getInt(); |
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} |
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j = 0;
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for (i = 0; i < numPoints; i++) { |
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p = readPoint(bb); |
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if (i == tempParts[j]) {
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elShape.moveTo(p.x, p.y); |
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if (j < (numParts - 1)) { |
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j++; |
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} |
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} else {
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elShape.lineTo(p.x, p.y); |
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} |
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} |
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return ShapeFactory.createPolygon2D(elShape);
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case (SHP.POINT3D):
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double x = bb.getDouble();
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double y = bb.getDouble();
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double z = bb.getDouble();
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return ShapeFactory.createPoint3D(x, y, z);
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case (SHP.POLYLINE3D):
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bb.position(bb.position() + 32);
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numParts = bb.getInt(); |
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numPoints = bb.getInt(); |
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elShape = new GeneralPathX(GeneralPathX.WIND_EVEN_ODD, numPoints);
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tempParts = new int[numParts]; |
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for (i = 0; i < numParts; i++) { |
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tempParts[i] = bb.getInt(); |
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} |
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j = 0;
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for (i = 0; i < numPoints; i++) { |
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p = readPoint(bb); |
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if (i == tempParts[j]) {
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elShape.moveTo(p.x, p.y); |
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if (j < (numParts - 1)) { |
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j++; |
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} |
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} else {
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elShape.lineTo(p.x, p.y); |
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} |
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} |
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double[] boxZ = new double[2]; |
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boxZ[0] = bb.getDouble();
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boxZ[1] = bb.getDouble();
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double[] pZ = new double[numPoints]; |
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for (i = 0; i < numPoints; i++) { |
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pZ[i] = bb.getDouble(); |
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} |
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return ShapeFactory.createPolyline3D(elShape, pZ);
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case (SHP.MULTIPOINT2D):
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bb.position(bb.position() + 32);
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numPoints = bb.getInt(); |
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double[] tempX = new double[numPoints]; |
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double[] tempY = new double[numPoints]; |
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for (i = 0; i < numPoints; i++) { |
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tempX[i] = bb.getDouble(); |
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tempY[i] = bb.getDouble(); |
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} |
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return ShapeFactory.createMultipoint2D(tempX, tempY);
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case (SHP.MULTIPOINT3D):
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bb.position(bb.position() + 32);
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numPoints = bb.getInt(); |
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double[] temX = new double[numPoints]; |
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double[] temY = new double[numPoints]; |
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double[] temZ = new double[numPoints]; |
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for (i = 0; i < numPoints; i++) { |
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temX[i] = bb.getDouble(); |
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temY[i] = bb.getDouble(); |
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temZ[i] = bb.getDouble(); |
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} |
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return ShapeFactory.createMultipoint3D(temX, temY, temZ);
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} |
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return null; |
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} |
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/**
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* @see com.iver.cit.gvsig.fmap.drivers.VectorialFileDriver#getShapeCount()
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*/
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public int getShapeCount() { |
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return numReg;
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} |
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/**
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* @see com.iver.cit.gvsig.fmap.drivers.VectorialDriver#getShapeType()
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*/
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public int getShapeType() { |
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int auxType = 0; |
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switch (type) {
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case (SHP.POINT2D):
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auxType = auxType | FShape.POINT; |
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break;
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case (SHP.POLYLINE2D):
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auxType = auxType | FShape.LINE; |
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break;
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case (SHP.POLYGON2D):
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auxType = auxType | FShape.POLYGON; |
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break;
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} |
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return auxType;
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} |
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/**
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* @see com.iver.cit.gvsig.fmap.drivers.VectorialFileDriver#initialize()
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*/
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public void initialize() { |
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try {
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// create a new header.
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ShapeFileHeader myHeader = new ShapeFileHeader();
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// read the header
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myHeader.readHeader(bb); |
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extent = new Rectangle2D.Double(myHeader.myXmin, myHeader.myYmin, |
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myHeader.myXmax - myHeader.myXmin, |
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myHeader.myYmax - myHeader.myYmin); |
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type = myHeader.myShapeType; |
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double x = myHeader.myXmin;
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double y = myHeader.myYmin;
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double w = myHeader.myXmax - myHeader.myXmin;
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double h = myHeader.myYmax - myHeader.myYmin;
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if (w == 0) { |
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x -= 0.1;
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w = 0.2;
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} |
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if (h == 0) { |
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y -= 0.1;
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h = 0.2;
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} |
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// String strFichDbf = m_Path.toLowerCase().replaceAll("\\.shp", ".dbf");
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String strFichDbf = file.getAbsolutePath().replaceAll("\\.shp", |
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".dbf");
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strFichDbf = strFichDbf.replaceAll("\\.SHP", ".DBF"); |
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DbaseFileNIO m_FichDbf = new DbaseFileNIO();
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m_FichDbf.open(new File(strFichDbf)); |
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numReg = m_FichDbf.getRecordCount(); |
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m_posShapes = new int[numReg]; |
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// read the records.
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int tempCurrentLength = myHeader.getHeaderLength();
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int numReg = 0; |
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int pos1;
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while (tempCurrentLength < myHeader.myFileLength) {
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// read the record header
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// ShapeFileRecord tempRecord = new ShapeFileRecord();
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// Bytes 0 to 4 represent the record number in the file, these may be out of order.
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bb.order(ByteOrder.BIG_ENDIAN);
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// tempRecord.setIndex(in.readInt());
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bb.getInt(); |
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// read the content length of this record in 16 bit words, excluding the index.
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// in.setLittleEndianMode(false);
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int tempContentLength = bb.getInt();
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pos1 = bb.position(); |
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m_posShapes[numReg] = bb.position(); |
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|
523 |
// Posicionamos
|
524 |
bb.position((pos1 + (2 * tempContentLength)));
|
525 |
numReg = numReg + 1;
|
526 |
|
527 |
// update the current length the 4 is for the index, and content length.
|
528 |
tempCurrentLength = tempCurrentLength + 4 + tempContentLength;
|
529 |
} |
530 |
} catch (Exception e) { |
531 |
e.printStackTrace(); |
532 |
} |
533 |
} |
534 |
|
535 |
/**
|
536 |
* Reads the Point from the shape file.
|
537 |
*
|
538 |
* @param in DOCUMENT ME!
|
539 |
*
|
540 |
* @return DOCUMENT ME!
|
541 |
*/
|
542 |
private Point2D.Double readPoint(ByteBuffer in) { |
543 |
// create a new point
|
544 |
Point2D.Double tempPoint = new Point2D.Double(); |
545 |
|
546 |
// bytes 1 to 4 are the type and have already been read.
|
547 |
// bytes 4 to 12 are the X coordinate
|
548 |
in.order(ByteOrder.LITTLE_ENDIAN);
|
549 |
tempPoint.setLocation(in.getDouble(), in.getDouble()); |
550 |
|
551 |
return tempPoint;
|
552 |
} |
553 |
|
554 |
/**
|
555 |
* Lee un rect?ngulo del fichero.
|
556 |
*
|
557 |
* @param in DOCUMENT ME!
|
558 |
*
|
559 |
* @return DOCUMENT ME!
|
560 |
*
|
561 |
* @throws IOException DOCUMENT ME!
|
562 |
*/
|
563 |
private Rectangle2D.Double readRectangle(ByteBuffer in) |
564 |
throws IOException { |
565 |
Rectangle2D.Double tempRect = new Rectangle2D.Double(); |
566 |
in.order(ByteOrder.LITTLE_ENDIAN);
|
567 |
tempRect.x = in.getDouble(); |
568 |
tempRect.y = in.getDouble(); |
569 |
|
570 |
tempRect.width = in.getDouble() - tempRect.x; |
571 |
|
572 |
if (tempRect.width == 0) { |
573 |
tempRect.width = 0.2;
|
574 |
tempRect.x -= 0.1;
|
575 |
} |
576 |
|
577 |
tempRect.height = in.getDouble() - tempRect.y; |
578 |
|
579 |
if (tempRect.height == 0) { |
580 |
tempRect.height = 0.2;
|
581 |
tempRect.y -= 0.1;
|
582 |
} |
583 |
|
584 |
return tempRect;
|
585 |
} |
586 |
|
587 |
/**
|
588 |
* @see com.iver.cit.gvsig.fmap.drivers.VectorialFileDriver#getFullExtent()
|
589 |
*/
|
590 |
public Rectangle2D getFullExtent() throws IOException { |
591 |
return extent;
|
592 |
} |
593 |
|
594 |
/**
|
595 |
* DOCUMENT ME!
|
596 |
*
|
597 |
* @param index DOCUMENT ME!
|
598 |
*
|
599 |
* @return DOCUMENT ME!
|
600 |
*
|
601 |
* @throws IOException
|
602 |
*
|
603 |
* @see com.iver.cit.gvsig.fmap.drivers.BoundedShapes#getShapeBounds()
|
604 |
*/
|
605 |
public Rectangle2D getShapeBounds(int index) throws IOException { |
606 |
Point2D p = new Point2D.Double(); |
607 |
Rectangle2D BoundingBox = new Rectangle2D.Double(); |
608 |
bb.position(m_posShapes[index]); |
609 |
bb.order(ByteOrder.LITTLE_ENDIAN);
|
610 |
|
611 |
int tipoShape = bb.getInt();
|
612 |
|
613 |
if (tipoShape != SHP.NULL) {
|
614 |
type = tipoShape; |
615 |
} |
616 |
|
617 |
// retrieve that shape.
|
618 |
// tempRecord.setShape(readShape(tempShapeType, tempContentLength, in));
|
619 |
switch (tipoShape) {
|
620 |
case (SHP.POINT2D):
|
621 |
case (SHP.POINT3D):
|
622 |
p = readPoint(bb); |
623 |
BoundingBox = new Rectangle2D.Double(p.getX() - 0.1, |
624 |
p.getY() - 0.1, 0.2, 0.2); |
625 |
|
626 |
break;
|
627 |
|
628 |
case (SHP.POLYLINE2D):
|
629 |
case (SHP.POLYGON2D):
|
630 |
case (SHP.MULTIPOINT2D):
|
631 |
case (SHP.POLYLINE3D):
|
632 |
case (SHP.POLYGON3D):
|
633 |
case (SHP.MULTIPOINT3D):
|
634 |
|
635 |
// BoundingBox
|
636 |
BoundingBox = readRectangle(bb); |
637 |
|
638 |
break;
|
639 |
} |
640 |
|
641 |
return BoundingBox;
|
642 |
} |
643 |
|
644 |
/**
|
645 |
* @see com.iver.cit.gvsig.fmap.drivers.VectorialFileDriver#accept(java.io.File)
|
646 |
*/
|
647 |
public boolean accept(File f) { |
648 |
return (f.getName().toUpperCase().endsWith("SHP")); |
649 |
} |
650 |
|
651 |
/**
|
652 |
* @see com.hardcode.driverManager.Driver#getType()
|
653 |
*/
|
654 |
public String getName() { |
655 |
return "gvSIG shp driver"; |
656 |
} |
657 |
|
658 |
/**
|
659 |
* @see com.iver.cit.gvsig.fmap.drivers.VectorialFileDriver#getDataDriverName()
|
660 |
*/
|
661 |
public String getDataDriverName() { |
662 |
return "gdbms dbf driver"; |
663 |
} |
664 |
|
665 |
/**
|
666 |
* @see com.iver.cit.gvsig.fmap.drivers.VectorialFileDriver#getDataFile(java.io.File)
|
667 |
*/
|
668 |
public File getDataFile(File f) { |
669 |
String str = f.getAbsolutePath();
|
670 |
|
671 |
return new File(str.substring(0, str.length() - 3)+ "dbf"); |
672 |
} |
673 |
} |