view src/samer/mds/MatrixBall.java.not @ 0:bf79fb79ee13

Initial Mercurial check in.

package samer.mds;
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import samer.core.types.*;
import samer.core.*;
import art.oz.*;

public class MatrixBall implements Drawable, Updatable
{
	// instance data .....................................

	int         	x, y, ox, oy;
	double    rx, ry;
	boolean	changed=true;

	protected	Rectangle dirty=new Rectangle();

	public MatrixBall()	{
		ox = x = 0; oy = y = 0;
		rx = 0; ry = 0;
	}


	// static data ........................................

	static Image    defaultBlob;
	static int      IW=4, IH=4;

	public void draw( Graphics2D g)   { g.drawImage( defaultBlob, ox=x, oy=y, null); }
	public void undraw( Graphics2D g) { g.clearRect( ox, oy, IW, IH); }


	public void moveTo(int x, int y) { this.x=x; this.y=y; }
	
	Rectangle tmp=new Rectangle();

	public void update( Oz oz) {
		dirty.setBounds(x,y,IW,IH);
		Oz.union(dirty,ox,oy,IW,IH);
		oz.invalidateRect(dirty);
	}

	public static Image getImage() { return defaultBlob; }
	public static void setImage(Image normal) { 
		defaultBlob = normal; 
	}

	public static void setBallSize(int w, int h)
	{
		IW=w; IH=h;
		defaultBlob = new BufferedImage(IW,IH,BufferedImage.TYPE_4BYTE_ABGR_PRE);
	}

	public static void drawBall( Image img, Color c, float alpha)
	{
		Graphics2D g=(Graphics2D)img.getGraphics();
		AlphaComposite comp;
		
		g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
		g.setBackground(new Color(0,0,0,0));
		g.clearRect(0,0,IW,IH);
		g.setComposite( AlphaComposite.SrcOver);
		drawBall(g,c,alpha);
		g.dispose();
	}
	
	public static void drawMarker( Image img, Color c, float alpha)
	{
		Graphics2D g=(Graphics2D)img.getGraphics();
		AlphaComposite comp;

		g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
		g.setBackground(new Color(0,0,0,0));
		g.clearRect(0,0,IW,IH);
		g.setComposite( AlphaComposite.SrcOver);
		float [] rgba=c.getRGBComponents(null);

		// ball image has transparent background
		g.setColor(new Color(0,0,0,80));
		g.fillRect(0,0,IW,IH);
		g.setColor(new Color(rgba[0],rgba[1],rgba[2],alpha));
		g.fillRect(1,1,IW-2,IH-2);
		g.dispose();
	}
	
	public static void drawBall( Graphics2D g, Color c, float alpha)
	{
		int cx = IW/2;
		int cy = IH/2;
		
		float [] rgba=c.getRGBComponents(null);
//		float [] rgba2=c.brighter().getRGBComponents(null);
		
		// ball image has transparent background
		g.setColor(new Color(0,0,0,80));
		oval(g,cx+1,cy+1,IW/2-2,IH/2-2);
		g.setColor(new Color(rgba[0],rgba[1],rgba[2],alpha));
		oval(g,cx,cy,IW/2-3,IH/2-3);
//		g.setColor(new Color(rgba2[0],rgba2[1],rgba2[2],alpha));
//		oval(g,4*cx/5,4*cy/5,IH/6,IW/6);
	}

	static void oval(Graphics2D g,  int x, int y, int rx, int ry) {
		g.fillOval(x-rx,y-ry,2*rx,2*ry);
	}
}