I used the sample code from Michael. http://svn.osgeo.org/geotools/branches/2.6.x/demo/example/src/main/java/org/geotools/demo/swing/FlyingSaucer.java I use the geotools 2.6.1 and changed some code. The following code works ok.
package org.geotools.demo; /* * GeoTools - The Open Source Java GIS Tookit * http://geotools.org * * (C) 2006-2008, Open Source Geospatial Foundation (OSGeo) * * This file is hereby placed into the Public Domain. This means anyone is * free to do whatever they wish with this file. Use it well and enjoy! */ import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.Rectangle; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.geom.AffineTransform; import java.awt.geom.Point2D; import java.awt.geom.Rectangle2D; import java.awt.image.BufferedImage; import java.awt.image.Raster; import java.io.File; import java.io.IOException; import java.net.URL; import java.util.Random; import javax.swing.ImageIcon; import javax.swing.JFrame; import javax.swing.Timer; import org.geotools.data.FeatureSource; import org.geotools.data.FileDataStore; import org.geotools.data.FileDataStoreFinder; import org.geotools.geometry.DirectPosition2D; import org.geotools.geometry.jts.ReferencedEnvelope; import org.geotools.map.DefaultMapContext; import org.geotools.map.MapContext; import org.geotools.renderer.lite.StreamingRenderer; import org.geotools.styling.SLD; import org.geotools.styling.Style; import org.geotools.swing.JMapPane; import org.opengis.feature.simple.SimpleFeature; import org.opengis.feature.simple.SimpleFeatureType; import org.opengis.referencing.crs.CoordinateReferenceSystem; /** * Animation of a sprite over a map. * * @author Michael Bedward */ public class FlyingSaucer extends JMapPane { private static final Random rand = new Random(); private static final Image SPRITE_IMAGE; private static ImageIcon image= new ImageIcon("compass_100.png"); static { SPRITE_IMAGE = image.getImage(); } private double movementDistance = 3.0; private int xdir = 1; private int ydir = 1; private ReferencedEnvelope spriteEnv; private Raster spriteBackground; private boolean firstDisplay = true; private Timer animationTimer = new Timer(50, new ActionListener() { public void actionPerformed(ActionEvent e) { drawSprite(); } }); @Override protected void paintComponent(Graphics g) { animationTimer.stop(); super.paintComponent(g); } @Override public void onRenderingCompleted() { super.onRenderingCompleted(); spriteBackground = null; animationTimer.start(); } private void drawSprite() { if (firstDisplay) { setSpritePosition(); firstDisplay = false; } Graphics2D gr2D = (Graphics2D) getGraphics(); eraseSprite(gr2D); moveSprite(); paintSprite(gr2D); } private void eraseSprite(Graphics2D gr2D) { if (spriteBackground != null) { Rectangle rect = spriteBackground.getBounds(); BufferedImage image = new BufferedImage( rect.width, rect.height, BufferedImage.TYPE_INT_ARGB); Raster child = spriteBackground.createChild( rect.x, rect.y, rect.width, rect.height, 0, 0, null); image.setData(child); gr2D.setBackground(getBackground()); gr2D.clearRect(rect.x, rect.y, rect.width, rect.height); gr2D.drawImage(image, rect.x, rect.y, null); spriteBackground = null; } } private void moveSprite() { ReferencedEnvelope displayArea = getDisplayArea(); DirectPosition2D lower = new DirectPosition2D(); DirectPosition2D upper = new DirectPosition2D(); double xdelta = 0, ydelta = 0; boolean done = false; while (!done) { lower.setLocation(spriteEnv.getLowerCorner()); upper.setLocation(spriteEnv.getUpperCorner()); xdelta = xdir * movementDistance; ydelta = ydir * movementDistance; lower.setLocation(lower.getX() + xdelta, lower.getY() + ydelta); upper.setLocation(upper.getX() + xdelta, upper.getY() + ydelta); boolean lowerIn = displayArea.contains(lower); boolean upperIn = displayArea.contains(upper); if (lowerIn && upperIn) { done = true; } else if (!lowerIn) { if (lower.x < displayArea.getMinX()) { xdir = -xdir; } else if (lower.y < displayArea.getMinY()) { ydir = -ydir; } } else if (!upperIn) { if (upper.x > displayArea.getMaxX()) { xdir = -xdir; } else if (upper.y > displayArea.getMaxY()) { ydir = -ydir; } } } spriteEnv.translate(xdelta, ydelta); } private void paintSprite(Graphics2D gr2D) { Rectangle bounds = getSpriteScreenPos(); spriteBackground = getBaseImage().getData(bounds); gr2D.drawImage(SPRITE_IMAGE, bounds.x, bounds.y, null); } private void setSpritePosition() { ReferencedEnvelope worldBounds = null; try { worldBounds = getMapContext().getLayerBounds(); } catch (IOException ex) { throw new IllegalStateException(ex); } CoordinateReferenceSystem crs = worldBounds.getCoordinateReferenceSystem(); Rectangle screenBounds = getVisibleRect(); int w = SPRITE_IMAGE.getWidth(null); int h = SPRITE_IMAGE.getHeight(null); int x = screenBounds.x + rand.nextInt(screenBounds.width - w); int y = screenBounds.y + rand.nextInt(screenBounds.height - h); Rectangle r = new Rectangle(x, y, w, h); AffineTransform tr = getScreenToWorldTransform(); Rectangle2D rworld = tr.createTransformedShape(r).getBounds2D(); spriteEnv = new ReferencedEnvelope(rworld, crs); } private Rectangle getSpriteScreenPos() { AffineTransform tr = getWorldToScreenTransform(); Point2D lowerCorner = new Point2D.Double(spriteEnv.getMinX(), spriteEnv.getMinY()); Point2D upperCorner = new Point2D.Double(spriteEnv.getMaxX(), spriteEnv.getMaxY()); Point2D p0 = tr.transform(lowerCorner, null); Point2D p1 = tr.transform(upperCorner, null); Rectangle r = new Rectangle(); r.setFrameFromDiagonal(p0, p1); return r; } public static void main(String[] args) throws Exception { JFrame frame = new JFrame("Animation example"); FlyingSaucer mapPane = new FlyingSaucer(); frame.getContentPane().add(mapPane); frame.setSize(800, 500); File shapeFile = new File("countries.shp"); FileDataStore store = FileDataStoreFinder.getDataStore(shapeFile); FeatureSource<SimpleFeatureType, SimpleFeature> shapefileSource = store .getFeatureSource(); // Create a map context and add our shapefile to it MapContext map = new DefaultMapContext(); Style style = SLD.createPolygonStyle(Color.BLACK, Color.CYAN, 1.0F); map.addLayer(shapefileSource, style); mapPane.setMapContext(map); mapPane.setRenderer(new StreamingRenderer()); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } } Thanks Michael. -- View this message in context: http://n2.nabble.com/How-to-draw-the-flight-track-on-the-window-tp4425060p4437677.html Sent from the geotools-gt2-users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Throughout its 18-year history, RSA Conference consistently attracts the world's best and brightest in the field, creating opportunities for Conference attendees to learn about information security's most important issues through interactions with peers, luminaries and emerging and established companies. http://p.sf.net/sfu/rsaconf-dev2dev _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
