public void self_angle_is_zero()
{
var vector = new Vector2F(10, 57);
var expected = 0.0;
var actual = vector.GetAngleBetween(vector);
Assert.Equal(expected, actual);
}
public void example_1()
{
var left = new Vector2F(1, 3);
var right = new Vector2F(-2, 5.6f);
var expected = 0.6647744948173457f;
var actual = left.GetAngleBetween(right);
Assert.Equal(expected, actual, 5);
}
public void opposite_vector_angle_is_pi()
{
var left = new Vector2F(14, 98);
var right = left.GetNegative();
var expected = (float)Math.PI;
var actual = left.GetAngleBetween(right);
Assert.Equal(expected, actual, 10);
}
public void right_angle_is_half_pi()
{
var left = new Vector2F(1, 1);
var right = new Vector2F(-1, 1);
var expected = (float)(Math.PI / 2.0);
var actual = left.GetAngleBetween(right);
Assert.Equal(expected, actual, 10);
}
