public void Vector2dCloneWorks()
{
var v = new Vector2d(1, 2);
var v2 = v.Clone();
v2.X = 3;
Assert.NotEqual(v, v2);
Assert.False(v.Equivalent(v2));
Assert.True(v.Equivalent(new Vector2d(1, 2)));
}
public void Vector2dNormalizedWorks()
{
var v = new Vector2d(12, 23);
var v2 = v.Normalized();
Assert.NotEqual(v, v2);
Assert.True(v.Equivalent(new Vector2d(12, 23)));
Assert.Equal(1, v.Normalized().Magnitude());
}
public void Vector2dDividesCorrectly()
{
var v = new Vector2d(2, 4);
Assert.False(v == v / 1);
Assert.False(v == v.Divide(1));
Assert.True(v.Equivalent(v / 1));
Assert.True(v.Equivalent(v.Divide(1)));
Assert.True(new Vector2d(.5, .25).Equivalent(1 / v));
Assert.True(new Vector2d(.5, .25).Equivalent(v.DivideFrom(1)));
Assert.True(new Vector2d(20, 40).Equivalent(v / .1));
Assert.True(new Vector2d(20, 40).Equivalent(v.Divide(.1)));
}
public void Vector2dSubtractsCorrectly()
{
var v = new Vector2d(2, 3);
Assert.False(v == v - 0);
Assert.False(v == v.Subtract(0));
Assert.False(-v == v.SubtractFrom(0));
Assert.True(v.Equivalent(v - 0));
Assert.True(v.Equivalent(v.Subtract(0)));
Assert.True((-v).Equivalent(0- v));
Assert.True((-v).Equivalent(v.SubtractFrom(0)));
Assert.True((v - v).Equivalent(Vector2d.Zero));
Assert.True((v.Subtract(v)).Equivalent(Vector2d.Zero));
Assert.True((v - .1).Equivalent(new Vector2d(1.9, 2.9)));
Assert.True((v.Subtract(.1)).Equivalent(new Vector2d(1.9, 2.9)));
Assert.True((.1 - v).Equivalent(new Vector2d(-1.9, -2.9)));
Assert.True((v.SubtractFrom(.1)).Equivalent(new Vector2d(-1.9, -2.9)));
}
public void Vector2dAddsCorrectly()
{
var v = new Vector2d(2, 3);
Assert.False(v == v + 0);
Assert.False(v == v.Add(0));
Assert.True(v.Equivalent(v+0));
Assert.True(v.Equivalent(v.Add(0)));
Assert.True((v + v).Equivalent(new Vector2d(4, 6)));
Assert.True(v.Add(v).Equivalent(new Vector2d(4, 6)));
Assert.True((v + .1).Equivalent(new Vector2d(2.1, 3.1)));
Assert.True(v.Add(.1).Equivalent(new Vector2d(2.1, 3.1)));
}
public void Vector2dApplyWorks()
{
var v = new Vector2d(1.11, 2.22);
v.Apply(Math.Round);
Assert.True(v.Equivalent(new Vector2d(1, 2)));
v.Apply(val => { return val + 1; });
Assert.True(v.Equivalent(new Vector2d(2, 3)));
}