Examples of jinngine.math.Vector3

jinngine.math.Vector3
Vector3d defines a Vector for a three double value tuple. Vector3d can represent any three dimensional value, such as a vertex or normal. The functional methods like add, sub, multiply that returns new instances, and left this unchanged. Static methods store the resulting vector on a existing reference, which avoid allowcation an can improove performances around 20% (profiling performend on vector addition). Deprecated methods will be removed on October 2010 @author Morten Silcowitz @author Pierre Labatut

        assertEquals(0., b.z);
    }


    @Test
    public void testCross01() {
        final Vector3 a = new Vector3(1., 2., 3.);
        final Vector3 b = new Vector3(4., 5., 6.);
        final Vector3 r = a.cross(b);
        assertEquals(1., a.x);
        assertEquals(2., a.y);
        assertEquals(3., a.z);
        assertEquals(4., b.x);
        assertEquals(5., b.y);

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        assertEquals(-3., r.z);
    }


    @Test(expected = NullPointerException.class)
    public void testCross02() {
        new Vector3().cross(null);
    }

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        new Vector3().cross(null);
    }


    @Test
    public void testCross03() {
        final Vector3 a = new Vector3(1., 2., 3.);
        final Vector3 b = new Vector3(4., 5., 6.);
        final Vector3 r = new Vector3();
        Vector3.crossProduct(a, b, r);
        assertEquals(1., a.x);
        assertEquals(2., a.y);
        assertEquals(3., a.z);
        assertEquals(4., b.x);

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        assertEquals(-3., r.z);
    }


    @Test(expected = NullPointerException.class)
    public void testCross04() {
        Vector3.crossProduct(null, new Vector3(), new Vector3());
    }

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        Vector3.crossProduct(null, new Vector3(), new Vector3());
    }


    @Test(expected = NullPointerException.class)
    public void testCross05() {
        Vector3.crossProduct(new Vector3(), null, new Vector3());
    }

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        Vector3.crossProduct(new Vector3(), null, new Vector3());
    }


    @Test(expected = NullPointerException.class)
    public void testCross06() {
        Vector3.crossProduct(new Vector3(), new Vector3(), null);
    }

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        Vector3.crossProduct(new Vector3(), new Vector3(), null);
    }


    @Test(expected = IllegalArgumentException.class)
    public void testIsEpsilon01() {
        new Vector3().isEpsilon(-1.);
    }

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    }


    @Test
    public void testIsEpsilon02() {
        {//The vector is not changed
            final Vector3 a = new Vector3(-3., 0., 3.);
            a.isEpsilon(4.);
            a.isEpsilon(1.);
            assertEquals(-3., a.x);
            assertEquals(0., a.y);
            assertEquals(3., a.z);
        }
        assertTrue(new Vector3().isEpsilon(-0.));
        assertTrue(new Vector3(-3., -3., -3.).isEpsilon(3.));
        assertTrue(new Vector3(3., 3., 3.).isEpsilon(3.));
        assertFalse(new Vector3(-4., 0., 0.).isEpsilon(3.));
        assertFalse(new Vector3(4., 0., 0.).isEpsilon(3.));
        assertFalse(new Vector3(0., -4., 0.).isEpsilon(3.));
        assertFalse(new Vector3(0., 4., 0.).isEpsilon(3.));
        assertFalse(new Vector3(0., 0., -4.).isEpsilon(3.));
        assertFalse(new Vector3(0., 0., 4.).isEpsilon(3.));
    }

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        assertFalse(new Vector3(0., 0., 4.).isEpsilon(3.));
    }


    @Test
    public void testI() {
        Vector3 a = Vector3.i();
        assertEquals(1., a.x);
        assertEquals(0., a.y);
        assertEquals(0., a.z);
        assertFalse(a == Vector3.i());
    }

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        assertFalse(a == Vector3.i());
    }


    @Test
    public void testJ() {
        Vector3 a = Vector3.j();
        assertEquals(0., a.x);
        assertEquals(1., a.y);
        assertEquals(0., a.z);
        assertFalse(a == Vector3.j());
    }

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