svn-gvsig-desktop / trunk / prototypes / mobile / desktop / extensions / extExportMobile / src / es / prodevelop / gvsig / exportMobile / ui / panels / LayerInView.java @ 19124
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package es.prodevelop.gvsig.exportMobile.ui.panels; |
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import java.awt.Rectangle; |
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import java.awt.geom.Rectangle2D; |
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import com.iver.cit.gvsig.fmap.DriverException; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.drivers.DriverIOException; |
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import com.iver.cit.gvsig.fmap.layers.FBitSet; |
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import com.iver.cit.gvsig.fmap.layers.FLayer; |
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import com.iver.cit.gvsig.fmap.layers.FLyrVect; |
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import com.iver.cit.gvsig.fmap.layers.ReadableVectorial; |
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/**
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* To know if the layer instersects with the view
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* @author Anabel Moreno
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*
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*/
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public class LayerInView { |
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private FLayer lyr;
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private FLyrVect layer;
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private FBitSet bitSet;
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private boolean intersects=false; |
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private int cont = 0; |
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private Rectangle2D rect; ; |
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/**
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* Constructor
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* @param layer
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* to work
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* @param rectangle
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* of the view
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*/
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public LayerInView(FLayer layer, Rectangle2D rectangle) { |
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lyr = layer; |
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rect = rectangle; |
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} |
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/**
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* if layer is vectorial look for layer`s geometries that intersects with the view,
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* if any geometries intersects, the method return true.
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* @return true if layer intersects with the view
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*/
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public boolean isInView() { |
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Rectangle2D lyrR = null; |
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Rectangle r = null; |
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try {
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lyrR = lyr.getFullExtent(); |
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r = rect.getBounds(); |
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if (r.intersects(lyrR)){
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intersects = true;
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if(lyr instanceof FLyrVect){ |
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layer = (FLyrVect) lyr; |
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bitSet = layer.queryByRect(rect); |
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ReadableVectorial va = layer.getSource(); |
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va.start(); |
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for (int i = bitSet.nextSetBit(0); i >= 0; i = bitSet.nextSetBit(i + 1)) { |
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IGeometry geo = va.getShape(i); |
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if (geo != null) { |
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cont++; |
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} |
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} |
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va.stop(); |
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if (cont >0) |
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intersects = true;
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else
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intersects = false;
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} |
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} |
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else
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intersects = false;
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} catch (DriverException e1) {
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// TODO Auto-generated catch block
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e1.printStackTrace(); |
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} catch (DriverIOException e) {
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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} |
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return intersects;
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} |
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} |