samer@0: package samer.mds;
samer@0: import java.awt.*;
samer@0: import java.awt.image.*;
samer@0: import java.awt.event.*;
samer@0: import samer.core.types.*;
samer@0: import samer.core.*;
samer@0: import art.oz.*;
samer@0: 
samer@0: public class MatrixBall implements Drawable, Updatable
samer@0: {
samer@0: 	// instance data .....................................
samer@0: 
samer@0: 	int         	x, y, ox, oy;
samer@0: 	double    rx, ry;
samer@0: 	boolean	changed=true;
samer@0: 
samer@0: 	protected	Rectangle dirty=new Rectangle();
samer@0: 
samer@0: 	public MatrixBall()	{
samer@0: 		ox = x = 0; oy = y = 0;
samer@0: 		rx = 0; ry = 0;
samer@0: 	}
samer@0: 
samer@0: 
samer@0: 	// static data ........................................
samer@0: 
samer@0: 	static Image    defaultBlob;
samer@0: 	static int      IW=4, IH=4;
samer@0: 
samer@0: 	public void draw( Graphics2D g)   { g.drawImage( defaultBlob, ox=x, oy=y, null); }
samer@0: 	public void undraw( Graphics2D g) { g.clearRect( ox, oy, IW, IH); }
samer@0: 
samer@0: 
samer@0: 	public void moveTo(int x, int y) { this.x=x; this.y=y; }
samer@0: 	
samer@0: 	Rectangle tmp=new Rectangle();
samer@0: 
samer@0: 	public void update( Oz oz) {
samer@0: 		dirty.setBounds(x,y,IW,IH);
samer@0: 		Oz.union(dirty,ox,oy,IW,IH);
samer@0: 		oz.invalidateRect(dirty);
samer@0: 	}
samer@0: 
samer@0: 	public static Image getImage() { return defaultBlob; }
samer@0: 	public static void setImage(Image normal) { 
samer@0: 		defaultBlob = normal; 
samer@0: 	}
samer@0: 
samer@0: 	public static void setBallSize(int w, int h)
samer@0: 	{
samer@0: 		IW=w; IH=h;
samer@0: 		defaultBlob = new BufferedImage(IW,IH,BufferedImage.TYPE_4BYTE_ABGR_PRE);
samer@0: 	}
samer@0: 
samer@0: 	public static void drawBall( Image img, Color c, float alpha)
samer@0: 	{
samer@0: 		Graphics2D g=(Graphics2D)img.getGraphics();
samer@0: 		AlphaComposite comp;
samer@0: 		
samer@0: 		g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
samer@0: 		g.setBackground(new Color(0,0,0,0));
samer@0: 		g.clearRect(0,0,IW,IH);
samer@0: 		g.setComposite( AlphaComposite.SrcOver);
samer@0: 		drawBall(g,c,alpha);
samer@0: 		g.dispose();
samer@0: 	}
samer@0: 	
samer@0: 	public static void drawMarker( Image img, Color c, float alpha)
samer@0: 	{
samer@0: 		Graphics2D g=(Graphics2D)img.getGraphics();
samer@0: 		AlphaComposite comp;
samer@0: 
samer@0: 		g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
samer@0: 		g.setBackground(new Color(0,0,0,0));
samer@0: 		g.clearRect(0,0,IW,IH);
samer@0: 		g.setComposite( AlphaComposite.SrcOver);
samer@0: 		float [] rgba=c.getRGBComponents(null);
samer@0: 
samer@0: 		// ball image has transparent background
samer@0: 		g.setColor(new Color(0,0,0,80));
samer@0: 		g.fillRect(0,0,IW,IH);
samer@0: 		g.setColor(new Color(rgba[0],rgba[1],rgba[2],alpha));
samer@0: 		g.fillRect(1,1,IW-2,IH-2);
samer@0: 		g.dispose();
samer@0: 	}
samer@0: 	
samer@0: 	public static void drawBall( Graphics2D g, Color c, float alpha)
samer@0: 	{
samer@0: 		int cx = IW/2;
samer@0: 		int cy = IH/2;
samer@0: 		
samer@0: 		float [] rgba=c.getRGBComponents(null);
samer@0: //		float [] rgba2=c.brighter().getRGBComponents(null);
samer@0: 		
samer@0: 		// ball image has transparent background
samer@0: 		g.setColor(new Color(0,0,0,80));
samer@0: 		oval(g,cx+1,cy+1,IW/2-2,IH/2-2);
samer@0: 		g.setColor(new Color(rgba[0],rgba[1],rgba[2],alpha));
samer@0: 		oval(g,cx,cy,IW/2-3,IH/2-3);
samer@0: //		g.setColor(new Color(rgba2[0],rgba2[1],rgba2[2],alpha));
samer@0: //		oval(g,4*cx/5,4*cy/5,IH/6,IW/6);
samer@0: 	}
samer@0: 
samer@0: 	static void oval(Graphics2D g,  int x, int y, int rx, int ry) {
samer@0: 		g.fillOval(x-rx,y-ry,2*rx,2*ry);
samer@0: 	}
samer@0: }