@Test
    public void testIssue957() {
        Vector3f v3 = new Vector3f(0f, 0f, 3f);

        Triangle t1 = makeTriangle();
        t1.set(2, v3);
        checkTriangle(t1);

        Triangle t2 = makeTriangle();
        t2.set(v3, v0, v1);
        checkTriangle(t2);

        Triangle t3 = makeTriangle();
        t3.set(2, v3.x, v3.y, v3.z);
        checkTriangle(t3);

        Triangle t4 = makeTriangle();
        t4.set3(v3);
        checkTriangle(t4);
    }
Verify that a Triangle center and normal get recomputed after a change. This
was issue #957 at GitHub.

@author Stephen Gold
jme3-core/src/test/java/com/jme3/math/TestIssue957.java