Ejemplo n.º 1
0
 /**
  * Constructs an image edit mode with specified manager.
  *
  * @param modeManager the mode manager for this mode.
  */
 public ImageEditMode(ModeManager modeManager, PixelsView pixels, float vnull, float[][] v) {
   super(modeManager);
   setName("Edit");
   // setIcon(loadIcon(ImageEditMode.class,"resources/ImageEdit16.gif"));
   // setIcon(loadIcon(MouseTrackMode.class,"resources/Track24.gif"));
   setMnemonicKey(KeyEvent.VK_E);
   setAcceleratorKey(KeyStroke.getKeyStroke(KeyEvent.VK_E, 0));
   setShortDescription("Edit points");
   _tile = pixels.getTile();
   _pixels = pixels;
   fill(vnull, v);
   _vnull = vnull;
   _n1 = v[0].length;
   _n2 = v.length;
   _v = v;
   _is2 = new ImageSampler2(_v);
   _ns = 0;
   _x1 = new float[0][0];
   _x2 = new float[0][0];
   _vx = new float[0][0];
   _points = new PointsView(_x1, _x2);
   if (pixels.getOrientation() == PixelsView.Orientation.X1RIGHT_X2UP) {
     _points.setOrientation(PointsView.Orientation.X1RIGHT_X2UP);
   } else {
     _points.setOrientation(PointsView.Orientation.X1DOWN_X2RIGHT);
   }
   _points.setStyle("w-o");
 }
Ejemplo n.º 2
0
/**
 * A mode for editing an image by drawing curves. <em> This class is a hack for testing
 * diffusion/interpolation ideas. </em>
 *
 * @author Dave Hale, Colorado School of Mines
 * @version 2007.09.06
 */
public class ImageEditMode extends Mode {
  private static final long serialVersionUID = 1L;

  /**
   * Constructs an image edit mode with specified manager.
   *
   * @param modeManager the mode manager for this mode.
   */
  public ImageEditMode(ModeManager modeManager, PixelsView pixels, float vnull, float[][] v) {
    super(modeManager);
    setName("Edit");
    // setIcon(loadIcon(ImageEditMode.class,"resources/ImageEdit16.gif"));
    // setIcon(loadIcon(MouseTrackMode.class,"resources/Track24.gif"));
    setMnemonicKey(KeyEvent.VK_E);
    setAcceleratorKey(KeyStroke.getKeyStroke(KeyEvent.VK_E, 0));
    setShortDescription("Edit points");
    _tile = pixels.getTile();
    _pixels = pixels;
    fill(vnull, v);
    _vnull = vnull;
    _n1 = v[0].length;
    _n2 = v.length;
    _v = v;
    _is2 = new ImageSampler2(_v);
    _ns = 0;
    _x1 = new float[0][0];
    _x2 = new float[0][0];
    _vx = new float[0][0];
    _points = new PointsView(_x1, _x2);
    if (pixels.getOrientation() == PixelsView.Orientation.X1RIGHT_X2UP) {
      _points.setOrientation(PointsView.Orientation.X1RIGHT_X2UP);
    } else {
      _points.setOrientation(PointsView.Orientation.X1DOWN_X2RIGHT);
    }
    _points.setStyle("w-o");
  }

  ///////////////////////////////////////////////////////////////////////////
  // protected

  protected void setActive(Component component, boolean active) {
    if (component instanceof Tile) {
      Tile tile = (Tile) component;
      if (active) {
        tile.addTiledView(_points);
        tile.addMouseListener(_ml);
        tile.addMouseWheelListener(_mwl);
        InputMap im = tile.getInputMap();
        ActionMap am = tile.getActionMap();
        im.put(KS_BACK_SPACE, "backspace");
        im.put(KS_UP, "up");
        im.put(KS_DOWN, "down");
        am.put("backspace", _bsa);
        am.put("up", _uaa);
        am.put("down", _daa);
      } else {
        tile.removeTiledView(_points);
        tile.removeMouseListener(_ml);
        tile.removeMouseWheelListener(_mwl);
        InputMap im = tile.getInputMap();
        ActionMap am = tile.getActionMap();
        im.remove(KS_BACK_SPACE);
        im.remove(KS_UP);
        im.remove(KS_DOWN);
        am.remove("backspace");
        am.remove("up");
        am.remove("down");
      }
    }
  }

  ///////////////////////////////////////////////////////////////////////////
  // private

  private Tile _tile; // tile containing the pixels view
  private PixelsView _pixels; // pixels view of image to edit
  private PointsView _points; // points view of editing curves
  private int _isSelected = -1; // index of selected segment
  private int _ipSelected = -1; // index of selected point
  private boolean _creating; // true if in process of creating a segment
  float _vnull; // the null (unknown) image value
  private int _n1; // number of samples in 1st dimension of image
  private int _n2; // number of samples in 2nd dimension of image
  float[][] _v; // array[n2][n1] of image values to edit
  private int _ns; // number of segments
  float[][] _x1; // x1 coordinates of points in segments
  float[][] _x2; // x2 coordinates of points in segments
  float[][] _vx; // values v(x1,x2)
  private int _xdown; // x coordinate where mouse down
  private int _ydown; // y coordinate where mouse down
  private int _xedit; // x coordinate of current edit
  private int _yedit; // y coordinate of current edit
  private boolean _hasMotionListener; // true if handling mouse drag
  private ImageSampler2 _is2; // used to get/set image samples

  // Event handlers.
  private static KeyStroke KS_BACK_SPACE = KeyStroke.getKeyStroke(KeyEvent.VK_BACK_SPACE, 0);
  private static KeyStroke KS_DOWN = KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0);
  private static KeyStroke KS_UP = KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0);
  private Action _bsa =
      new AbstractAction() {
        public void actionPerformed(ActionEvent e) {
          onBackSpace();
        }
      };
  private Action _uaa =
      new AbstractAction() {
        public void actionPerformed(ActionEvent e) {
          onArrow(1.0f);
        }
      };
  private Action _daa =
      new AbstractAction() {
        public void actionPerformed(ActionEvent e) {
          onArrow(-1.0f);
        }
      };
  private MouseListener _ml =
      new MouseAdapter() {;
        public void mousePressed(MouseEvent e) {
          onMouseDown(e);
        }

        public void mouseReleased(MouseEvent e) {
          onMouseUp(e);
        }
      };
  private MouseWheelListener _mwl =
      new MouseWheelListener() {;
        public void mouseWheelMoved(MouseWheelEvent e) {
          onMouseWheel(e);
        }
      };
  private MouseMotionListener _mml =
      new MouseMotionAdapter() {
        public void mouseDragged(MouseEvent e) {
          onMouseDrag(e);
        }
      };

  private void onBackSpace() {
    removeSelectedPoint();
    updateAll();
  }

  private void removeSelectedPoint() {
    int is = _isSelected;
    int ip = _ipSelected;
    if (is >= 0 && ip >= 0) {
      removePoint(is, ip);
      deselect();
    }
  }

  private void onArrow(float dv) {
    int is = _isSelected;
    int ip = _ipSelected;
    if (is >= 0 && ip >= 0) {
      _vx[is][ip] += dv;
      trace("value=" + _vx[is][ip]);
      updateImage();
      updatePixelsView();
    }
  }

  private void onMouseDown(MouseEvent e) {
    if (_tile != getTile(e)) return;

    // Remember mouse down location.
    int x = _xdown = e.getX();
    int y = _ydown = e.getY();

    // What segment and point, if any, was clicked?
    int[] i = {0, 0}, p = {0, 0};
    int icode = getSegmentAndPoint(x, y, i, p);
    int is = i[0], ip = i[1];
    int xp = p[0], yp = p[1];
    // trace("onMouseDown: is="+is+" ip="+ip);

    // If currently in the process of creating a new segment, ...
    if (_creating) {

      // If mouse is on previous (selected) point in the created segment,
      // then end segment creation.
      if (icode == 1 && isSelected(is, ip)) {
        _creating = false;
      }

      // Else append a new point to the created segment.
      else {
        is = _isSelected;
        ip = appendPoint(x, y);
        selectPoint(is, ip);
        addMotionListener();
      }
    }

    // Else if not currently in the process of creating a new segment, ...
    else {

      // If mouse on existing point, ...
      if (icode == 1) {

        // If alt key down, delete the point.
        if (e.isAltDown()) {
          selectPoint(is, ip);
          removeSelectedPoint();
        }

        // Else, select the point
        else {
          selectPoint(is, ip);
          addMotionListener();
        }
      }

      // Else if mouse on existing segment, ...
      else if (icode == 2) {

        // If shift key down, add a new point to existing segment.
        if (e.isShiftDown()) {
          insertPoint(is, ip, x, y);
          selectPoint(is, ip);
          addMotionListener();
        }
      }

      // Else if mouse down away from all segments, ...
      else {

        // If shift key down, create a new segment.
        if (e.isShiftDown()) {
          is = appendSegment(x, y);
          ip = 0;
          selectPoint(is, ip);
          addMotionListener();
          _creating = true;
        }

        // Else deselect all points.
        else {
          deselect();
        }
      }
    }
    updateAll();
  }

  private void onMouseDrag(MouseEvent e) {
    changeSelectedPoint(e.getX(), e.getY());
    updateAll();
  }

  private void onMouseUp(MouseEvent e) {
    if (hasMotionListener()) {
      changeSelectedPoint(e.getX(), e.getY());
      removeMotionListener();
    }
    updateAll();
  }

  private void onMouseWheel(MouseWheelEvent e) {
    float dv = (float) (-e.getWheelRotation());
    // trace("dv="+dv);
    onArrow(dv);
  }

  private void addMotionListener() {
    _tile.addMouseMotionListener(_mml);
    _hasMotionListener = true;
  }

  private void removeMotionListener() {
    _tile.removeMouseMotionListener(_mml);
    _hasMotionListener = false;
  }

  private boolean hasMotionListener() {
    return _hasMotionListener;
  }

  private Tile getTile(MouseEvent e) {
    return (Tile) e.getSource();
  }

  private void updateAll() {
    updateImage();
    updatePixelsView();
    updatePointsView();
  }

  private void updateImage() {
    fill(_vnull, _v);
    for (int is = 0; is < _ns; ++is) {
      float[] x1 = _x1[is];
      float[] x2 = _x2[is];
      float[] vx = _vx[is];
      int np = _x1[is].length;
      if (np == 1) {
        _is2.set(x1[0], x2[0], vx[0]);
      } else if (np > 1) {
        for (int ip = 1; ip < np; ++ip) {
          float x1a = x1[ip - 1];
          float x2a = x2[ip - 1];
          float vxa = vx[ip - 1];
          float x1b = x1[ip];
          float x2b = x2[ip];
          float vxb = vx[ip];
          ImageSampler2.Line line = _is2.sampleLine(x1a, x2a, x1b, x2b);
          int nr = line.nr();
          float ra = line.ra();
          float rb = line.rb();
          float dvx = (nr > 1) ? (vxb - vxa) / (float) (nr - 1) : vxa;
          for (int ir = 0; ir < nr; ++ir) {
            float vxi = vxa + (float) ir * dvx;
            line.set(ir, vxi);
          }
        }
      }
    }
  }

  private void updatePixelsView() {
    _pixels.set(_v);
  }

  private void updatePointsView() {
    _points.set(_x1, _x2);
  }

  private int x(float x1, float x2) {
    Transcaler ts = _tile.getTranscaler();
    PointsView.Orientation pvo = _points.getOrientation();
    if (pvo == PointsView.Orientation.X1RIGHT_X2UP) {
      Projector p = _tile.getHorizontalProjector();
      return ts.x(p.u(x1));
    } else {
      Projector p = _tile.getVerticalProjector();
      return ts.x(p.u(x2));
    }
  }

  private int y(float x1, float x2) {
    Transcaler ts = _tile.getTranscaler();
    PointsView.Orientation pvo = _points.getOrientation();
    if (pvo == PointsView.Orientation.X1RIGHT_X2UP) {
      Projector p = _tile.getHorizontalProjector();
      return ts.y(p.u(x2));
    } else {
      Projector p = _tile.getVerticalProjector();
      return ts.y(p.u(x1));
    }
  }

  private float x1(int x, int y) {
    Transcaler ts = _tile.getTranscaler();
    PointsView.Orientation pvo = _points.getOrientation();
    if (pvo == PointsView.Orientation.X1RIGHT_X2UP) {
      Projector p = _tile.getHorizontalProjector();
      return (float) p.v(ts.x(x));
    } else {
      Projector p = _tile.getVerticalProjector();
      return (float) p.v(ts.y(y));
    }
  }

  private float x2(int x, int y) {
    Transcaler ts = _tile.getTranscaler();
    PointsView.Orientation pvo = _points.getOrientation();
    if (pvo == PointsView.Orientation.X1RIGHT_X2UP) {
      Projector p = _tile.getHorizontalProjector();
      return (float) p.v(ts.y(y));
    } else {
      Projector p = _tile.getVerticalProjector();
      return (float) p.v(ts.x(x));
    }
  }

  private static double pointToPointSquared(double xp, double yp, double xa, double ya) {
    double xq = xp - xa;
    double yq = yp - ya;
    return xq * xq + yq * yq;
  }

  private static double pointToSegmentSquared(
      double xp, double yp, double xa, double ya, double xb, double yb, double[] q) {
    double xq = xp - xa;
    double yq = yp - ya;
    double xr = xb - xa;
    double yr = yb - ya;
    double rn = xq * xr + yq * yr;
    if (rn <= 0.0) {
      xq = xa;
      yq = ya;
    } else {
      double rd = xr * xr + yr * yr;
      if (rd <= rn) {
        xq = xb;
        yq = yb;
      } else {
        double r = rn / rd;
        xq = xa + r * xr;
        yq = ya + r * yr;
      }
    }
    if (q != null) {
      q[0] = xq;
      q[1] = yq;
    }
    xq -= xp;
    yq -= yp;
    return xq * xq + yq * yq;
  }

  private void changeSelectedPoint(int x, int y) {
    changePoint(_isSelected, _ipSelected, x, y);
  }

  private void changePoint(int is, int ip, int x, int y) {
    // trace("changePoint: is="+is+" ip="+ip);
    _x1[is][ip] = x1(x, y);
    _x2[is][ip] = x2(x, y);
  }

  private int appendPoint(int is, int x, int y) {
    int ip = _x1[is].length;
    insertPoint(is, ip, x, y);
    return ip;
  }

  private int appendPoint(int x, int y) {
    return appendPoint(_ns - 1, _xdown, _ydown);
  }

  private int appendSegment(int x, int y) {
    insertPoint(_ns, 0, x, y);
    return _ns - 1;
  }

  private void insertPoint(int is, int ip, int x, int y) {
    Check.argument(is <= _ns, "is in bounds");
    Check.argument(is == _ns && ip == 0 || is < _ns && ip <= _x1[is].length, "is in bounds");
    if (is == _ns) {
      int ns = is + 1;
      float[][] x1 = new float[ns][0];
      float[][] x2 = new float[ns][0];
      float[][] vx = new float[ns][0];
      for (int js = 0; js < _ns; ++js) {
        x1[js] = _x1[js];
        x2[js] = _x2[js];
        vx[js] = _vx[js];
      }
      _x1 = x1;
      _x2 = x2;
      _vx = vx;
      _ns = ns;
    }
    int np = _x1[is].length;
    float[] x1p = _x1[is];
    float[] x2p = _x2[is];
    float[] vxp = _vx[is];
    float[] x1t = new float[np + 1];
    float[] x2t = new float[np + 1];
    float[] vxt = new float[np + 1];
    for (int jp = 0; jp < ip; ++jp) {
      x1t[jp] = x1p[jp];
      x2t[jp] = x2p[jp];
      vxt[jp] = vxp[jp];
    }
    x1t[ip] = x1(x, y);
    x2t[ip] = x2(x, y);
    vxt[ip] = _is2.get(x1t[ip], x2t[ip]);
    for (int jp = ip; jp < np; ++jp) {
      x1t[jp + 1] = x1p[jp];
      x2t[jp + 1] = x2p[jp];
      vxt[jp + 1] = vxp[jp];
    }
    _x1[is] = x1t;
    _x2[is] = x2t;
    _vx[is] = vxt;
  }

  private void removePoint(int is, int ip) {
    int np = _x1[is].length;
    if (np == 1) {
      float[][] x1t = new float[_ns - 1][];
      float[][] x2t = new float[_ns - 1][];
      float[][] vxt = new float[_ns - 1][];
      for (int js = 0; js < is; ++js) {
        x1t[js] = _x1[js];
        x2t[js] = _x2[js];
        vxt[js] = _vx[js];
      }
      for (int js = is + 1; js < _ns; ++js) {
        x1t[js - 1] = _x1[js];
        x2t[js - 1] = _x2[js];
        vxt[js - 1] = _vx[js];
      }
      --_ns;
      _x1 = x1t;
      _x2 = x2t;
      _vx = vxt;
    } else {
      float[] x1p = _x1[is];
      float[] x2p = _x2[is];
      float[] vxp = _vx[is];
      float[] x1t = new float[np - 1];
      float[] x2t = new float[np - 1];
      float[] vxt = new float[np - 1];
      for (int jp = 0; jp < ip; ++jp) {
        x1t[jp] = x1p[jp];
        x2t[jp] = x2p[jp];
        vxt[jp] = vxp[jp];
      }
      for (int jp = ip + 1; jp < np; ++jp) {
        x1t[jp - 1] = x1p[jp];
        x2t[jp - 1] = x2p[jp];
        vxt[jp - 1] = vxp[jp];
      }
      _x1[is] = x1t;
      _x2[is] = x2t;
      _vx[is] = vxt;
    }
  }

  private boolean isSelected(int is, int ip) {
    return _isSelected == is && _ipSelected == ip;
  }

  private void selectPoint(int is, int ip) {
    _isSelected = is;
    _ipSelected = ip;
  }

  private void deselect() {
    _isSelected = -1;
    _ipSelected = -1;
  }

  /**
   * Gets indices of a nearby segment and point, if close enough. If an existing segment is close
   * enough, both segment and point indices {is,ip} are returned. If an existing point on the
   * segment is close enough, then ip is the index of that existing point. Otherwise, if a line
   * between two existing points is close enough, then ip is the larger index of those two existing
   * points. In both cases, the pixel coordinates {x,y} of the closest point are returned. If no
   * existing segment is close enough, then {is,ip} = {-1,-1}.
   *
   * @param x the x coordinate in pixels.
   * @param y the y coordinate in pixels.
   * @param i array {is,ip} of indices of segment and point; {-1,-1} if none.
   * @param p array {xp,yp} coordinates of close point. This point could be an existing point or a
   *     point on a line between two existing points.
   * @return 0, if no existing segment (or point) is close enough; 1, if the closest point already
   *     exists in a segment; 2, if the closest point lies on a segment between two existing points
   *     in that segment.
   */
  private int getSegmentAndPoint(int x, int y, int[] i, int[] p) {
    double[] pt = {0.0, 0.0};
    double dpmin = 25.0; // distance must be less than 5 pixels
    double dsmin = 25.0; // 25 is this distance squared
    int icode = 0; // initially assume no segment is close enough
    int ipmin = -1;
    int ismin = -1;
    int xtmin = -1;
    int ytmin = -1;
    for (int is = 0; is < _ns; ++is) {
      double xa = 0.0;
      double ya = 0.0;
      double xb = 0.0;
      double yb = 0.0;
      int np = _x1[is].length;
      for (int ip = 0; ip < np; ++ip) {
        xb = xa;
        yb = ya;
        xa = x(_x1[is][ip], _x2[is][ip]);
        ya = y(_x1[is][ip], _x2[is][ip]);
        double dp = pointToPointSquared(x, y, xa, ya);
        if (dp < dpmin) {
          ipmin = ip;
          ismin = is;
          dpmin = dp;
          xtmin = (int) (xa + 0.5);
          ytmin = (int) (ya + 0.5);
          icode = 1;
        } else if (ip > 0 && icode != 1) {
          double ds = pointToSegmentSquared(x, y, xa, ya, xb, yb, pt);
          if (ds < dsmin) {
            ipmin = ip;
            ismin = is;
            dsmin = ds;
            xtmin = (int) (pt[0] + 0.5);
            ytmin = (int) (pt[1] + 0.5);
            icode = 2;
          }
        }
      }
    }
    i[0] = ismin;
    i[1] = ipmin;
    p[0] = xtmin;
    p[1] = ytmin;
    return icode;
  }

  private void drawLine(JComponent c, int x, int y) {
    _xedit = x;
    _yedit = y;
    Graphics g = c.getGraphics();
    g.setColor(Color.BLACK);
    g.setXORMode(c.getBackground());
    g.drawLine(_xdown, _ydown, _xedit, _yedit);
    g.dispose();
  }

  public static void main(String[] args) {
    SwingUtilities.invokeLater(
        new Runnable() {
          public void run() {
            go();
          }
        });
  }

  private static void go() {
    int n1 = 101;
    int n2 = 101;
    // float[][] f = sin(rampfloat(0.0f,0.1f,0.1f,n1,n2));
    float[][] f = zerofloat(n1, n2);

    PlotPanel.Orientation orientation = PlotPanel.Orientation.X1DOWN_X2RIGHT;
    PlotPanel panel = new PlotPanel(orientation);

    PixelsView pv = panel.addPixels(f);
    pv.setInterpolation(PixelsView.Interpolation.NEAREST);
    pv.setColorModel(ColorMap.JET);

    panel.addColorBar("time");
    panel.setVLabel("depth (km)");
    panel.setHLabel("distance (km)");

    PlotFrame frame = new PlotFrame(panel);
    frame.setDefaultCloseOperation(PlotFrame.EXIT_ON_CLOSE);
    frame.setSize(800, 700);
    frame.setFontSize(24);
    frame.setVisible(true);

    ModeManager mm = frame.getModeManager();
    ImageEditMode iem = new ImageEditMode(mm, pv, 0.0f, f);
    iem.setActive(true);
  }

  private void trace(String s) {
    System.out.println(s);
  }
}