/*
* Copyright (c) 2011-2016, Peter Abeles. All Rights Reserved.
*
* This file is part of BoofCV (http://boofcv.org).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package boofcv.struct.deriv;
import boofcv.struct.image.GrayF32;
import boofcv.struct.sparse.GradientValue_F32;
import boofcv.struct.sparse.SparseGradientSafe;
import boofcv.struct.sparse.SparseImageGradient;
import org.junit.Test;
import static org.junit.Assert.assertTrue;
/**
* @author Peter Abeles
*/
public class TestSparseGradientSafe {
static int r = 2;
static int width = 20;
static int height = 30;
/**
* Read in a border and see if it returns zeros
*/
@Test
public void checkMakeBorderSafe() {
Dummy d = new Dummy();
SparseImageGradient<GrayF32,GradientValue_F32> safe =
new SparseGradientSafe<>(d);
// read the border case
GradientValue_F32 v = safe.compute(0,0);
assertTrue(v.x==0);
assertTrue(v.y==0);
// read inside and see if it has the expected results
assertTrue(safe.compute(width/2,height/2) == null);
}
private static class Dummy implements SparseImageGradient<GrayF32,GradientValue_F32>
{
@Override
public GradientValue_F32 compute(int x, int y) {
if( !isInBounds(x,y) )
throw new RuntimeException("Bad stuff");
return null;
}
@Override
public Class<GradientValue_F32> getGradientType() {
return GradientValue_F32.class;
}
@Override
public void setImage(GrayF32 input) {
}
@Override
public boolean isInBounds(int x, int y) {
return !( x <= r || x >= width-r || y <= r || y >= height-r );
}
}
}