public void can_get_scaled_vector()
{
var source = new Vector4F(1.0f, -2, 4, -9);
var expected = new Vector4F(3.0f, -6, 12, -27);
var actual = source.GetScaled(3.0f);
Assert.Equal(expected, actual);
}
public void source_vector_is_unchanged()
{
var actual = new Vector4F(1.0f, 2, 4, -9);
var expected = new Vector4F(actual);
var result = actual.GetScaled(2.0f);
Assert.Equal(expected, actual);
}
public void projection_example_1()
{
var u = new Vector4F(-1.0f, 2, 1, 3);
var v = new Vector4F(2.0f, -1, 3, 1);
var expected = u.GetScaled(2.0f / 15.0f);
var actual = u.GetProjected(v);
Assert.Equal(expected, actual);
}
public void op_multiply_scalar_mimics_scale_first()
{
var vector = new Vector4F(1.0f, 2, 3, 4);
var scalar = 2.4f;
var expected = vector.GetScaled(scalar);
var actual = scalar * vector;
Assert.Equal(expected, actual);
}