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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * accompanied this code).
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package test.com.sun.javafx.geom;

import com.sun.javafx.geom.Vec3d;
import com.sun.javafx.geom.Vec3f;
import org.junit.Test;

import static org.junit.Assert.*;

/**
 * PRELIMINARY unit tests for Vec3d.
 *
 * TODO: expand this to cover the entire class (RT-26882)
 */
public class Vec3dTest {

    private static double EPSILON = 1e-10;

    @Test
    public void testDefaultContructor() {
        Vec3d v3d = new Vec3d();
        assertEquals(0, v3d.x, 0);
        assertEquals(0, v3d.y, 0);
        assertEquals(0, v3d.z, 0);
    }

    @Test
    public void testContructor1() {
        Vec3d v3d = new Vec3d(1.0, 2.0, 3.0);
        assertEquals(1, v3d.x, 0);
        assertEquals(2, v3d.y, 0);
        assertEquals(3, v3d.z, 0);
    }

    @Test
    public void testContructor2() {
        Vec3f v3f = new Vec3f(1f, 2f, 3f);
        Vec3d v3d = new Vec3d(v3f);
        assertEquals(1, v3d.x, 0);
        assertEquals(2, v3d.y, 0);
        assertEquals(3, v3d.z, 0);
    }

    @Test
    public void testLength() {
        Vec3d v3d = new Vec3d();
        double len = v3d.length();
        assertEquals(0, len, 0);

        v3d = new Vec3d(1, 2, 3);
        len = v3d.length();
        assertEquals(Math.sqrt(14.0), len, EPSILON);

        v3d = new Vec3d(-1, 2, 3);
        len = v3d.length();
        assertEquals(Math.sqrt(14.0), len, EPSILON);

        v3d = new Vec3d(1, -0.2, -0.03);
        len = v3d.length();
        assertEquals(Math.sqrt(1.0409), len, EPSILON);

        v3d = new Vec3d(-0.1, -0.2, -0.3);
        len = v3d.length();
        assertEquals(Math.sqrt(0.14), len, EPSILON);
    }

}
