Application: gvSIG desktop

	double width = 500, height = 500;

        int xProv, yProv;

	ViewPort[] viewPortList = null;

	private void calcViewPort(ViewPort viewPort)throws NoninvertibleTransformException{

		viewPortList = new ViewPort[numCols*numRows];

		if(viewPort.getImageWidth() < width && viewPort.getImageHeight() < height){

			viewPortList[0] = viewPort;

			return;

		}

	    int vpCnt = 0;

	    double imgPxX = viewPort.getImageWidth();

	    double dWcX = viewPort.getAdjustedExtent().getWidth();

	    double tileWcW = (getTile(vpCnt).getSize().getWidth() * dWcX) / imgPxX;

	    double imgPxY = viewPort.getImageHeight();

	    double dWcY = viewPort.getAdjustedExtent().getHeight();

	    double tileWcH = (getTile(vpCnt).getSize().getHeight() * dWcY) / imgPxY;

	    viewPortList[0] = viewPort.cloneViewPort();

	    viewPortList[0].setImageSize(getTile(vpCnt).getSize());

	    viewPortList[0].setExtent(new Rectangle2D.Double(viewPort.getAdjustedExtent().getMinX(), viewPort.getAdjustedExtent().getMaxY() - tileWcH, tileWcW, tileWcH));

	    viewPortList[0].setAffineTransform(mat);

	    double wt = tileWcW;

	    double ht = tileWcH;

	    double xt = viewPort.getAdjustedExtent().getMinX();

	    double yt = viewPort.getAdjustedExtent().getMaxY() - tileWcH;

	    for (int stepY=0; stepY < numRows; stepY++) {

	    	wt = tileWcW;

	    	xt = viewPort.getAdjustedExtent().getMinX();

	    	for (int stepX=0; stepX < numCols; stepX++) {

	    		vpCnt = stepY*numCols+stepX;

	    		if(vpCnt > 0){

	    			if(stepX > 0)

	    				xt += wt;

	    			if((xt + wt) > viewPort.getAdjustedExtent().getMaxX())

	    				wt = Math.abs(viewPort.getAdjustedExtent().getMaxX() - xt);

	    			viewPortList[vpCnt] = viewPort.cloneViewPort();

	    			viewPortList[vpCnt].setImageSize(getTile(vpCnt).getSize());

	    			viewPortList[vpCnt].setExtent(new Rectangle2D.Double(xt, yt, wt, ht));

	    			viewPortList[vpCnt].setAffineTransform(mat);

	    		}

	    		//System.out.println("ViewPort: "+vpCnt+" "+viewPortList[vpCnt].getAdjustedExtent()+" "+getTile(vpCnt).getSize());

	    	}

	    	if((yt - ht) < viewPort.getAdjustedExtent().getMinY()){

	    		ht = Math.abs(yt - viewPort.getAdjustedExtent().getMinY());

	    		yt = viewPort.getAdjustedExtent().getMinY();

	    	}else

	    		yt -= ht;

	    }

	}

		/*if(viewPortList == null)

			this.calcViewPort(viewPort);

		return viewPortList[tileNr];*/