simpleshapedragging.java

world wind java sdk 源码

package gov.nasa.worldwind.examples;

import gov.nasa.worldwind.*;
import gov.nasa.worldwind.event.*;
import gov.nasa.worldwind.layers.*;
import gov.nasa.worldwind.layers.placename.*;
import gov.nasa.worldwind.awt.*;
import gov.nasa.worldwind.geom.*;
import gov.nasa.worldwind.render.*;

import javax.swing.*;

public class SimpleShapeDragging extends JFrame
{
    public SimpleShapeDragging()
    {
        final WorldWindowGLCanvas wwd = new WorldWindowGLCanvas();
        wwd.setPreferredSize(new java.awt.Dimension(1000, 800));
        this.getContentPane().add(wwd, java.awt.BorderLayout.CENTER);
        wwd.setModel(new BasicModel());

        // Add a layer containing an image
        SurfaceImage si = new SurfaceImage("images/400x230-splash-nww.png", Sector.fromDegrees(35, 45, -115, -95));
        RenderableLayer layer = new RenderableLayer();
        layer.addRenderable(si);
        insertBeforePlacenames(wwd, layer);

        // Set up to drag
        wwd.addSelectListener(new SelectListener()
        {
            private BasicDragger dragger = new BasicDragger(wwd);

            public void selected(SelectEvent event)
            {
                // Delegate dragging computations to a dragger.
                this.dragger.selected(event);
            }
        });
    }

    public static void main(String[] args)
    {
        java.awt.EventQueue.invokeLater(new Runnable()
        {
            public void run()
            {
                JFrame frame = new SimpleShapeDragging();
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.pack();
                frame.setVisible(true);
            }
        });
    }

    public static void insertBeforePlacenames(WorldWindow wwd, Layer layer)
    {
        // Insert the layer into the layer list just before the placenames.
        int compassPosition = 0;
        LayerList layers = wwd.getModel().getLayers();
        for (Layer l : layers)
        {
            if (l instanceof PlaceNameLayer)
                compassPosition = layers.indexOf(l);
        }
        layers.add(compassPosition, layer);
    }
}