static public Vector2D operator*(Vector2D A, Vector2D B)
{
Vector2D temp = new Vector2D();
temp.x = A.x * B.x;
temp.y = A.y * B.y;
return temp;
}
static public Vector2D operator *(Vector2D A, double B)
{
Vector2D temp = new Vector2D();
temp.x = A.x * B;
temp.y = A.y * B;
return temp;
}
static public Vector2D operator *(float B, Vector2D A)
{
Vector2D temp = new Vector2D();
temp.x = A.x * (double)B;
temp.y = A.y * (double)B;
return temp;
}
public void LengthAndDistance()
{
Random Rand = new Random();
Vector2D Test1 = new Vector2D(Rand.NextDouble() * 1000, Rand.NextDouble() * 1000);
Vector2D Test2 = new Vector2D(Rand.NextDouble() * 1000, Rand.NextDouble() * 1000);
Vector2D Test3 = Test1 + Test2;
double Distance1 = Test2.GetLength();
double Distance2 = Vector2D.GetDistanceBetween(Test1, Test3);
Assert.IsTrue(Distance1 < Distance2 + .001f && Distance1 > Distance2 - .001f);
}
public void DotProduct()
{
Random Rand = new Random();
Vector2D TestVector2D1 = new Vector2D(Rand.NextDouble() * 1000, Rand.NextDouble() * 1000);
Vector2D TestVector2D2 = new Vector2D(Rand.NextDouble() * 1000, Rand.NextDouble() * 1000);
double Cross2D = TestVector2D1.Dot(TestVector2D2);
Vector3D TestVector3D1 = new Vector3D(TestVector2D1.x, TestVector2D1.y, 0);
Vector3D TestVector3D2 = new Vector3D(TestVector2D2.x, TestVector2D2.y, 0);
double Cross3D = TestVector3D1.Dot(TestVector3D2);
Assert.IsTrue(Cross3D == Cross2D);
}
public void Rotate()
{
Vector2D TestVector = new Vector2D(1, 0);
TestVector.Rotate((double)System.Math.PI / 2);
Assert.IsTrue(TestVector.Equals(new Vector2D(0, 1), .001f));
}
public void ScalerOperations()
{
Vector2D ScalarMultiplicationArgument = new Vector2D(5.0f, 4.0f);
Assert.IsTrue(ScalarMultiplicationArgument * -.5 == new Vector2D(-2.5f, -2));
Assert.IsTrue(ScalarMultiplicationArgument / 2 == new Vector2D(2.5f, 2));
Assert.IsTrue(2 / ScalarMultiplicationArgument == new Vector2D(2.5f, 2));
Assert.IsTrue(5 * ScalarMultiplicationArgument == new Vector2D(25, 20));
}
public void GetLengthAndNormalize()
{
Vector2D Point3 = new Vector2D(3, -4);
Assert.IsTrue(Point3.GetLength() > 4.999f && Point3.GetLength() < 5.001f);
Point3.Normalize();
Assert.IsTrue(Point3.GetLength() > 0.99f && Point3.GetLength() < 1.01f);
}
// are they the same within the error value?
public bool Equals(Vector2D OtherVector, double ErrorValue)
{
if ((x < OtherVector.x + ErrorValue && x > OtherVector.x - ErrorValue) &&
(y < OtherVector.y + ErrorValue && y > OtherVector.y - ErrorValue))
{
return true;
}
return false;
}
public double Cross(Vector2D B)
{
return x * B.y - y * B.x;
}
public double Dot(Vector2D B)
{
return (x*B.x + y*B.y);
}
public double GetDeltaAngle(Vector2D A)
{
return (double)GetDeltaAngle(GetAngle0To2PI(), A.GetAngle0To2PI());
}
public double GetSquaredDistanceTo(Vector2D Other)
{
return ((x - Other.x) * (x - Other.x) + (y - Other.y) * (y - Other.y));
}
public static double GetDistanceBetweenSquared(Vector2D A, Vector2D B)
{
return ((A.x - B.x) * (A.x - B.x) + (A.y - B.y) * (A.y - B.y));
}
public static double GetDistanceBetween(Vector2D A, Vector2D B)
{
return (double)System.Math.Sqrt(GetDistanceBetweenSquared(A, B));
}
public Vector2D GetPerpendicular()
{
Vector2D temp = new Vector2D(y, -x);
return temp;
}
public void ArithmaticOperations()
{
Vector2D Point1 = new Vector2D();
Point1.Set(1, 1);
Vector2D Point2 = new Vector2D();
Point2.Set(2, 2);
Vector2D Point3 = Point1 + Point2;
Assert.IsTrue(Point3 == new Vector2D(3, 3));
Point3 = Point1 - Point2;
Assert.IsTrue(Point3 == new Vector2D(-1, -1));
Point3 += Point1;
Assert.IsTrue(Point3 == new Vector2D(0, 0));
Point3 += Point2;
Assert.IsTrue(Point3 == new Vector2D(2, 2));
Point3 *= 6;
Assert.IsTrue(Point3 == new Vector2D(12, 12));
Vector2D InlineOpLeftSide = new Vector2D(5, -3);
Vector2D InlineOpRightSide = new Vector2D(-5, 4);
Assert.IsTrue(InlineOpLeftSide + InlineOpRightSide == new Vector2D(.0f, 1));
Assert.IsTrue(InlineOpLeftSide - InlineOpRightSide == new Vector2D(10.0f, -7));
}
static public Vector2D operator /(double B, Vector2D A)
{
Vector2D temp = new Vector2D();
temp.x = A.x / B;
temp.y = A.y / B;
return temp;
}