public void projecting_different_dimensions_throws()
{
var u = new VectorD(5);
var v = new VectorD(3);
Assert.Throws <ArgumentOutOfRangeException>(() => u.GetProjected(v));
}
public void projection_example_4()
{
var u = new VectorD(new[] { 1.0 });
var v = new VectorD(new[] { 6.0 });
var expected = new VectorD(v);
var actual = u.GetProjected(v);
Assert.Equal(expected, actual);
}
public void projection_example_1()
{
var u = new VectorD(new[] { -1.0, 2, 1, 3 });
var v = new VectorD(new[] { 2.0, -1, 3, 1 });
var expected = new VectorD(new[] { -2.0 / 15.0, 4.0 / 15.0, 2.0 / 15.0, 2.0 / 5.0 });
var actual = u.GetProjected(v);
Assert.Equal(expected, actual);
}
public void projecting_zero_against_another_vector_results_in_zero()
{
var u = new VectorD(new[] { 3.0, -17, 5, -6 });
var v = new VectorD(4);
var expected = new VectorD(4);
var actual = u.GetProjected(v);
Assert.Equal(expected, actual);
}
public void projecting_against_zero_results_in_same_vector()
{
var u = new VectorD(4);
var v = new VectorD(new[] { -3.0, 8, 5, -10 });
var expected = new VectorD(v);
var actual = u.GetProjected(v);
Assert.Equal(expected, actual);
}
public void projecting_zero_size_returns_zero_vector()
{
var u = new VectorD(0);
var v = new VectorD(0);
var expected = new VectorD(v);
var actual = u.GetProjected(v);
Assert.Equal(expected, actual);
}