/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2007-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.renderer3d.provider.texture;
import org.geotools.renderer3d.utils.BoundingRectangle;
import org.geotools.renderer3d.utils.MathUtils;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
/**
* A TextureRenderer implementation for testing purposes.
* Outputs a texture with the the center coordinates of the requested area, and gradient colored.
*
* @author Hans H�ggstr�m
*/
public final class DummyTextureRenderer
implements TextureRenderer
{
//======================================================================
// Public Methods
//----------------------------------------------------------------------
// TextureRenderer Implementation
public void renderArea( final BoundingRectangle area, final BufferedImage target )
{
final Graphics2D graphics = (Graphics2D) target.getGraphics();
final int width = target.getWidth();
final int height = target.getHeight();
graphics.setColor( Color.BLUE );
graphics.fillRect( 0, 0, width, height );
// Fill with a gradient that depends on x coordinate.
for ( int x = 0; x < width; x++ )
{
final Color color = makeCoordinateColor( MathUtils.interpolate( x,
0,
width,
area.getX1(),
area.getX2() ) );
graphics.setColor( color );
graphics.drawLine( x, 0, x, height );
}
// Write tile coordinate and draw a border
graphics.setColor( Color.WHITE );
graphics.drawRect( 0, 0, width - 1, height - 1 );
graphics.drawString( "x:" + area.getCenterX() + ", y:" + area.getCenterY(),
width / 8,
height / 2 );
// Simulate calculation / loading delay:
pauseRandomTime( 50, 20 );
}
private void pauseRandomTime( final int maxMsToPause, final int addition )
{
try
{
Thread.sleep( (long) ( maxMsToPause * Math.random() + addition ) );
}
catch ( InterruptedException e )
{
// Ignore
}
}
//======================================================================
// Private Methods
private Color makeCoordinateColor( double x )
{
x = Math.abs( x );
int i = (int) x;
return new Color( i % 255, ( i / 10 ) % 255, ( i / 100 ) % 255 );
}
}