samer@0: /*
samer@0:  *	IteratorImageSource.java	
samer@0:  *
samer@0:  *	Copyright (c) 2000, Samer Abdallah, King's College London.
samer@0:  *	All rights reserved.
samer@0:  *
samer@0:  *	This software is provided AS iS and WITHOUT ANY WARRANTY; 
samer@0:  *	without even the implied warranty of MERCHANTABILITY or 
samer@0:  *	FITNESS FOR A PARTICULAR PURPOSE.
samer@0:  */
samer@0: 
samer@0: package samer.maths;
samer@0: import  samer.tools.*;
samer@0: import  java.awt.image.*;
samer@0: 
samer@0: /**
samer@0: 	This is an image source that gets its values
samer@0: 	from a Vec (vector) via its Vec.Iterator - ie,
samer@0: 	it does not need access to an array of value
samer@0:   */
samer@0: 
samer@0: public class IteratorImageSource extends ImageSourceBase
samer@0: {
samer@0: 	Vec			vec;
samer@0: 	byte []		buf;
samer@0: 
samer@0: 	public IteratorImageSource( Vec v) { this( v, v.size(), 1); }
samer@0: 	public IteratorImageSource( Vec v, int w, int h)
samer@0: 	{
samer@0: 		vec		= v;
samer@0: 		width	= w;
samer@0: 		height	= h;
samer@0: 		buf		= new byte[v.size()];
samer@0: 	}
samer@0: 
samer@0: 
samer@0: 	protected int getHints() {
samer@0: 		return  ImageConsumer.TOPDOWNLEFTRIGHT 
samer@0: 				| ImageConsumer.COMPLETESCANLINES
samer@0: 				| ImageConsumer.SINGLEPASS;
samer@0: 	}
samer@0: 
samer@0: 	protected void sendPixels(ImageConsumer ic)
samer@0: 	{
samer@0: 		Vec.Iterator it=vec.iterator(); 
samer@0: 
samer@0: 		for (int i=0; it.more(); i++) {
samer@0: 			buf[i] = (byte)map.clipInt(it.next());
samer@0: 		}
samer@0: 		ic.setPixels(0, 0, width, height, model, buf, 0, width);
samer@0: 	}
samer@0: }
samer@0: