geointersectionlayer.java

openmap java写的开源数字地图程序. 用applet实现,可以像google map 那样放大缩小地图.

            LatLonPoint llHolder = new LatLonPoint();
            Geo g = new Geo(0, 0);
            int[] pix = new int[(int) (h * w)];

            for (double j = 0; j < h; j++) {
                for (double i = 0; i < w; i++) {

                    boolean inShape = s.contains(i + x, j + y);
                    p.inverse((int) (i + x), (int) (j + y), llHolder);

                    g.initialize(llHolder.getLatitude(),
                            llHolder.getLongitude());
                    boolean inGeo = Intersection.isPointInPolygon(g,
                            rawll,
                            false);

                    int val = 0;
                    if (inShape == inGeo) {
                        val = 0x6200FF00;
                    } else {
                        val = 0x62ff0000;
                    }
                    pix[(int) (w * j + i)] = val;
                }
            }

            OMRaster omr = new OMRaster((int) x, (int) y, (int) w, (int) h, pix);
            omr.setSelectPaint(OMColor.clear);
            // omr.setSelected(true);
            omr.generate(p);
            return omr;
        }

        return SinkGraphic.getSharedInstance();
    }

    protected JPanel getFileListControl() {
        if (fileListControl == null) {
            fileListControl = PaletteHelper.createHorizontalPanel("Shape Files Being Used for Intersections");
        }
        return fileListControl;
    }

    public void rebuildFileListControl() {
        JPanel p = getFileListControl();
        p.setBackground(Color.white);
        Color light = Color.white;
        Color dark = Color.LIGHT_GRAY;
        Color current = dark;

        p.removeAll();
        GridBagLayout gridbag = new GridBagLayout();
        p.setLayout(gridbag);
        GridBagConstraints c = new GridBagConstraints();
        c.anchor = GridBagConstraints.NORTHWEST;
        c.gridx = GridBagConstraints.REMAINDER;
        c.fill = GridBagConstraints.HORIZONTAL;
        c.weightx = 1.0;

        getRegionIndex(false).clear();
        for (Iterator it = fileDataList.iterator(); it.hasNext();) {
            Object obj = it.next();
            if (obj instanceof EsriGraphicList) {
                EsriGraphicList shapeList = (EsriGraphicList) obj;
                JPanel control = (JPanel) shapeList.getAttribute(SHAPE_CONTROL_ATTRIBUTE);
                if (control != null) {
                    control.setBackground(current);
                    Component[] comps = control.getComponents();
                    for (int i = 0; i < comps.length; i++) {
                        comps[i].setBackground(current);
                    }
                    if (current == dark)
                        current = light;
                    else
                        current = dark;
                    gridbag.setConstraints(control, c);
                    p.add(control);
                }

                addToRegionIndex(shapeList, getRegionIndex(false));
            }
        }

        if (fileDataList.size() == 0) {
            JLabel label = new JLabel("No Shape Files Loaded", JButton.CENTER);
            c.anchor = GridBagConstraints.CENTER;
            gridbag.setConstraints(label, c);
            p.add(label);
        }

        c.fill = GridBagConstraints.BOTH;
        c.weighty = 1;
        JLabel filler = new JLabel("");
        gridbag.setConstraints(filler, c);
        p.add(filler);

        p.revalidate();
    }

    JPanel fileListControl;
    JPanel panel = null;
    JCheckBox showCrossingsButton;
    JCheckBox pointCheckButton;

    public Component getGUI() {
        if (panel == null) {
            panel = new JPanel();
            GridBagLayout gridbag = new GridBagLayout();
            GridBagConstraints c = new GridBagConstraints();

            panel.setLayout(gridbag);
            c.gridx = GridBagConstraints.REMAINDER;
            c.weightx = 1.0;
            c.insets = new Insets(1, 5, 1, 5);
            c.fill = GridBagConstraints.HORIZONTAL;
            JPanel daPanel1 = PaletteHelper.createHorizontalPanel("Paint Settings for Shapes");
            daPanel1.add(shapeDA.getGUI());
            JPanel daPanel2 = PaletteHelper.createHorizontalPanel("Paint Settings for Intersected Shapes");
            daPanel2.add(shapeDASelected.getGUI());

            gridbag.setConstraints(daPanel1, c);
            gridbag.setConstraints(daPanel2, c);
            panel.add(daPanel1);
            panel.add(daPanel2);

            c.weighty = 1.0;
            c.fill = GridBagConstraints.BOTH;
            JPanel tablePanel = getFileListControl();
            gridbag.setConstraints(tablePanel, c);
            panel.add(tablePanel);

            JPanel checkPanel = new JPanel();
            GridBagLayout gb = new GridBagLayout();
            checkPanel.setLayout(gb);
            GridBagConstraints c2 = new GridBagConstraints();

            c2.anchor = GridBagConstraints.WEST;
            c2.gridx = GridBagConstraints.REMAINDER;
            showCrossingsButton = new JCheckBox("Show Crossing Points", showCrossingPoints);
            showCrossingsButton.setToolTipText("<html>Show ordered points where drawn lines cross Shapes.");
            showCrossingsButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent ae) {
                    setShowCrossingPoints(((JCheckBox) ae.getSource()).isSelected());
                    doPrepare();
                }
            });
            gb.setConstraints(showCrossingsButton, c2);
            checkPanel.add(showCrossingsButton);

            pointCheckButton = new JCheckBox("Click Creates Image Mask", showCrossingPoints);
            pointCheckButton.setToolTipText("<html>When clicking on Shape, create image mask that shows Geo point<br>intersection vs. Java 2D. Green is good.");
            pointCheckButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent ae) {
                    setCreatePointCheck(((JCheckBox) ae.getSource()).isSelected());
                    doPrepare();
                }
            });
            gb.setConstraints(pointCheckButton, c2);
            checkPanel.add(pointCheckButton);

            c.weightx = 0;
            c.weighty = 0;
            c.fill = GridBagConstraints.NONE;
            gridbag.setConstraints(checkPanel, c);
            panel.add(checkPanel);

            JButton addButton = new JButton("Add Shape File...");
            addButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent ae) {
                    addShapeFileFromUser();
                }
            });
            c.insets = new Insets(5, 5, 5, 5);
            gridbag.setConstraints(addButton, c);
            panel.add(addButton);
        }
        return panel;
    }

    public static class OMPolyRegion extends GeoRegion.Impl {

        public OMPoly poly;

        public OMPolyRegion(OMPoly omp) {
            super(omp.getLatLonArray(), false);
            poly = omp;
        }

        public Object getRegionId() {
            return GeoIntersectionLayer.OMPolyRegion.this;
        }

    }

    public static class OMLineSegment implements GeoSegment {
        Geo[] geos;
        float[] segArray;

        public OMLineSegment(OMLine oml) {
            segArray = oml.getLL();
            geos = new Geo[2];
            geos[0] = new Geo(segArray[0], segArray[1]);
            geos[1] = new Geo(segArray[2], segArray[3]);
        }

        /*
         * (non-Javadoc)
         * 
         * @see com.bbn.openmap.geo.GeoSegment#getSeg()
         */
        public Geo[] getSeg() {
            return geos;
        }

        /*
         * (non-Javadoc)
         * 
         * @see com.bbn.openmap.geo.GeoSegment#getSegArray()
         */
        public float[] getSegArray() {
            return segArray;
        }

        /*
         * (non-Javadoc)
         * 
         * @see com.bbn.openmap.geo.GeoSegment#getSegId()
         */
        public Object getSegId() {
            return this;
        }

        public BoundingCircle getBoundingCircle() {
            return new BoundingCircle.Impl(getSeg());
        }

    }

    protected class RemoveShapesActionListener implements ActionListener {
        protected OMGraphicList mainDataList;
        protected OMGraphicList toBeRemoved;

        public RemoveShapesActionListener(OMGraphicList mdl, OMGraphicList tbr) {
            mainDataList = mdl;
            toBeRemoved = tbr;
        }

        public void actionPerformed(ActionEvent ae) {
            mainDataList.remove(toBeRemoved);
            rebuildFileListControl();
            GeoIntersectionLayer.this.doPrepare();
        }
    }

    public boolean isShowCrossingPoints() {
        return showCrossingPoints;
    }

    public void setShowCrossingPoints(boolean showCrossingPoints) {
        this.showCrossingPoints = showCrossingPoints;
    }

    public void propertyChange(PropertyChangeEvent evt) {
        shapeDA.setTo(fileDataList);
        repaint();
    }

    public DrawingAttributes getShapeDA() {
        return shapeDA;
    }

    public void setShapeDA(DrawingAttributes shapeDA) {
        this.shapeDA = shapeDA;
    }

    public DrawingAttributes getShapeDASelected() {
        return shapeDASelected;
    }

    public void setShapeDASelected(DrawingAttributes shapeDASelected) {
        this.shapeDASelected = shapeDASelected;
    }

    public boolean isCreatePointCheck() {
        return createPointCheck;
    }

    public void setCreatePointCheck(boolean createPointCheck) {
        this.createPointCheck = createPointCheck;
    }
}