public void ParametricLine_IsParallelToPlane_BeExpected(string planeCoordinates, string ccCoordinate1, string ccCoordinate2, bool result)
        {
            // 1. Prepare
            Plane p = new Plane(planeCoordinates);
            Cartesian3dCoordinate p1   = new Cartesian3dCoordinate(ccCoordinate1);
            Cartesian3dCoordinate p2   = new Cartesian3dCoordinate(ccCoordinate2);
            ParametricLine        line = ParametricLine.FromTwoPoints(p1, p2);

            // 2. Execute
            bool b = line.IsParallelTo(p);

            // 3. Verify
            Assert.Equal(result, b);
        }
        public void ParametricLine_CreateFromTwoPoints_BeExpected(Cartesian3dCoordinate p1, Cartesian3dCoordinate p2, double x, double xt, double y, double yt, double z, double zt)
        {
            // 1. Prepare
            // Nothing to prepare.

            // 2. Execute
            ParametricLine o = ParametricLine.FromTwoPoints(p1, p2);

            // 3. Verify
            Assert.Equal(x, o.X, PRECISION_DOUBLE);
            Assert.Equal(xt, o.A, PRECISION_DOUBLE);
            Assert.Equal(y, o.Y, PRECISION_DOUBLE);
            Assert.Equal(yt, o.B, PRECISION_DOUBLE);
            Assert.Equal(z, o.Z, PRECISION_DOUBLE);
            Assert.Equal(zt, o.C, PRECISION_DOUBLE);
        }