comparison 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);
+	}
+}