/** | |
* Copyright (c) 2011, Novyon Events | |
* | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions are met: | |
* | |
* - Redistributions of source code must retain the above copyright notice, this | |
* list of conditions and the following disclaimer. | |
* | |
* - Redistributions in binary form must reproduce the above copyright notice, | |
* this list of conditions and the following disclaimer in the documentation | |
* and/or other materials provided with the distribution. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
* | |
* @author Anthyon | |
*/ | |
package com.jme3.terrain.noise.filter; | |
import java.nio.FloatBuffer; | |
import java.util.ArrayList; | |
import java.util.List; | |
import com.jme3.terrain.noise.Filter; | |
public class IterativeFilter extends AbstractFilter { | |
private int iterations; | |
private List<Filter> preIterateFilters = new ArrayList<Filter>(); | |
private List<Filter> postIterateFilters = new ArrayList<Filter>(); | |
private Filter filter; | |
@Override | |
public int getMargin(int size, int margin) { | |
if (!this.isEnabled()) { | |
return margin; | |
} | |
for (Filter f : this.preIterateFilters) { | |
margin = f.getMargin(size, margin); | |
} | |
margin = this.filter.getMargin(size, margin); | |
for (Filter f : this.postIterateFilters) { | |
margin = f.getMargin(size, margin); | |
} | |
return this.iterations * margin + super.getMargin(size, margin); | |
} | |
public void setIterations(int iterations) { | |
this.iterations = iterations; | |
} | |
public int getIterations() { | |
return this.iterations; | |
} | |
public IterativeFilter addPostIterateFilter(Filter filter) { | |
this.postIterateFilters.add(filter); | |
return this; | |
} | |
public IterativeFilter addPreIterateFilter(Filter filter) { | |
this.preIterateFilters.add(filter); | |
return this; | |
} | |
public void setFilter(Filter filter) { | |
this.filter = filter; | |
} | |
@Override | |
public FloatBuffer filter(float sx, float sy, float base, FloatBuffer data, int size) { | |
if (!this.isEnabled()) { | |
return data; | |
} | |
FloatBuffer retval = data; | |
for (int i = 0; i < this.iterations; i++) { | |
for (Filter f : this.preIterateFilters) { | |
retval = f.doFilter(sx, sy, base, retval, size); | |
} | |
retval = this.filter.doFilter(sx, sy, base, retval, size); | |
for (Filter f : this.postIterateFilters) { | |
retval = f.doFilter(sx, sy, base, retval, size); | |
} | |
} | |
return retval; | |
} | |
} |