1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
//=============================================================================
// Copyright 2006-2010 Daniel W. Dyer
//
// 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 org.uncommons.watchmaker.examples.monalisa;
import java.awt.Color;
import java.awt.Point;
import java.util.Arrays;
import java.util.List;
import org.testng.annotations.Test;
import org.uncommons.maths.number.ConstantGenerator;
import org.uncommons.maths.random.Probability;
import org.uncommons.watchmaker.examples.ExamplesTestUtils;
/**
* Unit test for the {@link PolygonColourMutation} evolutionary operator.
* @author Daniel Dyer
*/
public class PolygonColourMutationTest
{
@Test
public void testColourMutation()
{
PolygonColourMutation mutation = new PolygonColourMutation(Probability.ONE, // Guaranteed mutation.
new ConstantGenerator<Double>(1d));
// A grey triangle.
final ColouredPolygon polygon = new ColouredPolygon(new Color(128, 128, 128, 128),
Arrays.asList(new Point(0, 0),
new Point(50, 50),
new Point(0, 75)));
List<ColouredPolygon> image = Arrays.asList(polygon);
List<ColouredPolygon> mutatedImage = mutation.apply(image, ExamplesTestUtils.getRNG());
Color mutatedColour = mutatedImage.get(0).getColour();
assert mutatedColour.getRed() == 129 : "Red component should have been incremented, is " + mutatedColour.getRed();
assert mutatedColour.getGreen() == 129 : "Green component should have been incremented, is " + mutatedColour.getGreen();
assert mutatedColour.getBlue() == 129 : "Blue component should have been incremented, is " + mutatedColour.getBlue();
assert mutatedColour.getAlpha() == 129 : "Alpha component should have been incremented, is " + mutatedColour.getAlpha();
}
@Test
public void testZeroProbability()
{
PolygonColourMutation mutation = new PolygonColourMutation(Probability.ZERO,
new ConstantGenerator<Double>(1d));
// A grey triangle.
Color originalColour = new Color(128, 128, 128, 128);
final ColouredPolygon polygon = new ColouredPolygon(originalColour,
Arrays.asList(new Point(0, 0),
new Point(50, 50),
new Point(0, 75)));
List<ColouredPolygon> image = Arrays.asList(polygon);
List<ColouredPolygon> mutatedImage = mutation.apply(image, ExamplesTestUtils.getRNG());
assert mutatedImage.get(0) == polygon : "Polygon should not have changed at all.";
assert mutatedImage.get(0).getColour() == originalColour : "Colour should not have changed at all.";
}
}
|
