/* * CalibratorHomographyImagePanel.java */package itesm.gvision.apps.calibrator;import java.awt.image.*;import java.awt.*;import java.util.*;//----------------------------------------------------------------------------------/** * Component for drawing homography points. * @author  hugo */public class CalibratorHomographyImagePanel extends javax.swing.JComponent {	/** Current image */	BufferedImage image;		/** Mark points */	Vector points = new Vector();		/** Selected point */	int selectedPoint;		//----------------------------------------------------------------------------------	/** Creates a new instance of CalibratorHomographyImagePanel */	public CalibratorHomographyImagePanel() 	{		this.setCursor(new java.awt.Cursor(java.awt.Cursor.CROSSHAIR_CURSOR));		//this.setSize(this.getParent().getWidth(), this.getParent().getHeight());	}		//----------------------------------------------------------------------------------	/**	 * Sets the index of selected point	 */	public void setSelectedPoint(int id)	{		this.selectedPoint = id;		this.repaint();	}		//----------------------------------------------------------------------------------	/**	 * Gets the id of selected point	 */	public int getSelectedPoint()	{		return this.selectedPoint;	}		//----------------------------------------------------------------------------------	/**	 * Set the image to paint	 */	public void setImage(BufferedImage img)	{		this.image = img;		this.setSize(img.getWidth(),  img.getHeight());		this.repaint();	}	//----------------------------------------------------------------------------------	/**	 * Get the current image	 */	public BufferedImage getImage()	{		return this.image;	}		//----------------------------------------------------------------------------------	/** Set the points to paint	 */	public void setPoints(Vector p)	{		this.points = p;		this.repaint();	}	//----------------------------------------------------------------------------------	/** Get the points 	 */	public Vector getPoints()	{		return this.points;	}		//----------------------------------------------------------------------------------	/** Add a new point	 */	public void addPoint(Point p)	{		this.points.add(p);		this.selectedPoint = this.points.size()-1;		this.repaint();	}		//----------------------------------------------------------------------------------	/** Detele the specified point	 */	public void deletePoint(int id)	{		this.points.remove(id);		this.repaint();	}		//----------------------------------------------------------------------------------	/** Clear all points	 */	public void clearPoints()	{		this.points.clear();	}		//----------------------------------------------------------------------------------	/** Search for the nearest point to p	 */	public void selectNearestPoint(Point p)	{		int idx = 0;		double min = 10000;		for(int i=0; i<this.points.size(); i++){			Point current = (Point)this.points.get(i);			if (current.distance(p) < min){				min = current.distance(p);				idx = i;			}		}		this.selectedPoint = idx;		this.repaint();	}		//----------------------------------------------------------------------------------	/**	 * Redefine paint method	 */	public void paint(Graphics g)	{		int sz = 3;		if (this.image != null){			g.drawImage(this.image, 0, 0, this);			for(int i=0; i<this.points.size(); i++){				g.setColor(this.selectedPoint == i ? Color.GREEN : Color.RED);				Point p = (Point)this.points.get(i);				sz = 3;				g.drawOval(p.x-sz/2, p.y-sz/2, sz, sz);				sz = 7;				g.drawOval(p.x-sz/2, p.y-sz/2, sz, sz);			}		}		else{			g.drawString("You need to load an undistorted reference image first...", 50, 50);		}	}}