/*
* Copyright (C) 2011-2015, Peter Abeles. All Rights Reserved.
*
* This file is part of Geometric Regression Library (GeoRegression).
*
* 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 georegression.geometry;
import georegression.struct.point.Point2D_I32;
import org.junit.Test;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import static org.junit.Assert.assertEquals;
/**
* @author Peter Abeles
*/
public class TestUtilPoint2D_I32 {
Random rand = new Random(234);
@Test
public void distance_int() {
int x0 = 5;
int y0 = 6;
int x1 = -2;
int x2 = 4;
double found = UtilPoint2D_I32.distance(x0,y0,x1,x2);
assertEquals(7.2801, found, 1e-3);
}
@Test
public void distance_pts() {
double found = UtilPoint2D_I32.distance(new Point2D_I32(5,6),new Point2D_I32(-2,4));
assertEquals(7.2801, found, 1e-3);
}
@Test
public void distanceSq_int() {
int x0 = 5;
int y0 = 6;
int x1 = -2;
int x2 = 4;
int found = UtilPoint2D_I32.distanceSq(x0,y0,x1,x2);
assertEquals(53, found);
}
@Test
public void distanceSq_pts() {
int found = UtilPoint2D_I32.distanceSq(new Point2D_I32(5,6),new Point2D_I32(-2,4));
assertEquals(53, found, 1e-3);
}
@Test
public void mean() {
List<Point2D_I32> list = new ArrayList<Point2D_I32>();
int X=0,Y=0;
for( int i = 0; i < 20; i++ ) {
Point2D_I32 p = new Point2D_I32();
X += p.x = rand.nextInt(100)-50;
Y += p.y = rand.nextInt(100)-50;
list.add(p);
}
Point2D_I32 found = UtilPoint2D_I32.mean(list, null);
assertEquals(X/20,found.x);
assertEquals(Y/20,found.y);
}
}