public void TestClosestPointHorizontal()
{
Ray2 ray = new Ray2(new Vector2(0.0f, 100.0f), Vector2.UnitX);
Vector2 leftCap = ray.ClosestPointTo(new Vector2(-2.0f, 200.0f));
Assert.AreEqual(
new Vector2(0.0f, 100.0f), leftCap, "Closest point beyond left end found"
);
Vector2 leftPoint = ray.ClosestPointTo(new Vector2(0.0f, 200.0f));
Assert.AreEqual(
new Vector2(0.0f, 100.0f), leftPoint, "Closest point on left end found"
);
Vector2 midLeftRight = ray.ClosestPointTo(new Vector2(0.5f, 200.0f));
Assert.AreEqual(
new Vector2(0.5f, 100.0f), midLeftRight, "Closest point inmidst of line found"
);
Vector2 rightPoint = ray.ClosestPointTo(new Vector2(1.0f, 200.0f));
Assert.AreEqual(
new Vector2(1.0f, 100.0f), rightPoint, "Closest point on right end found"
);
Vector2 rightCap = ray.ClosestPointTo(new Vector2(3.0f, 200.0f));
Assert.AreEqual(
new Vector2(3.0f, 100.0f), rightCap, "Closest point beyond right end found"
);
}
/// <summary>Checks whether another instance is equal to this instance</summary>
/// <param name="other">Other instance to compare to this instance</param>
/// <returns>True if the other instance is equal to this instance</returns>
public virtual bool Equals(Ray2 other)
{
if (other == null)
{
return(false);
}
else
{
return((this.Origin == other.Origin) && (this.Direction == other.Direction));
}
}
public void TestSerialization()
{
XmlSerializer serializer = new XmlSerializer(typeof(Ray2));
System.IO.MemoryStream stream = new System.IO.MemoryStream();
Ray2 ray = new Ray2(new Vector2(123.0f, 456.0f), new Vector2(654.0f, 321.0f));
serializer.Serialize(stream, ray);
stream.Seek(0, System.IO.SeekOrigin.Begin);
Ray2 restored = (Ray2)serializer.Deserialize(stream);
Assert.AreEqual(ray, restored, "Deserialized ray matches serialized ray");
}
public void TestConstructor() {
Ray2 ray = new Ray2(new Vector2(2.0f, 3.0f), new Vector2(1.0f, 0.0f));
Assert.AreEqual(2.0f, ray.Origin.X, "X origin is taken over from constructor");
Assert.AreEqual(3.0f, ray.Origin.Y, "Y origin is taken over from constructor");
Assert.AreEqual(1.0f, ray.Direction.X, "X direction is taken over from constructor");
Assert.AreEqual(0.0f, ray.Direction.Y, "Y direction is taken over from constructor");
ray = new Ray2(new Vector2(2.0f, 3.0f), new Vector2(0.0f, 1.0f));
Assert.AreEqual(2.0f, ray.Origin.X, "X origin is taken over from constructor");
Assert.AreEqual(3.0f, ray.Origin.Y, "Y origin is taken over from constructor");
Assert.AreEqual(0.0f, ray.Direction.X, "X direction is taken over from constructor");
Assert.AreEqual(1.0f, ray.Direction.Y, "Y direction is taken over from constructor");
}
public void TestConstructor()
{
Ray2 ray = new Ray2(new Vector2(2.0f, 3.0f), new Vector2(1.0f, 0.0f));
Assert.AreEqual(2.0f, ray.Origin.X, "X origin is taken over from constructor");
Assert.AreEqual(3.0f, ray.Origin.Y, "Y origin is taken over from constructor");
Assert.AreEqual(1.0f, ray.Direction.X, "X direction is taken over from constructor");
Assert.AreEqual(0.0f, ray.Direction.Y, "Y direction is taken over from constructor");
ray = new Ray2(new Vector2(2.0f, 3.0f), new Vector2(0.0f, 1.0f));
Assert.AreEqual(2.0f, ray.Origin.X, "X origin is taken over from constructor");
Assert.AreEqual(3.0f, ray.Origin.Y, "Y origin is taken over from constructor");
Assert.AreEqual(0.0f, ray.Direction.X, "X direction is taken over from constructor");
Assert.AreEqual(1.0f, ray.Direction.Y, "Y direction is taken over from constructor");
}
public void TestEqualityOperator() {
Ray2 ray1 = new Ray2(new Vector2(100.0f, 200.0f), new Vector2(300.0f, 400.0f));
Ray2 ray2 = new Ray2(ray1);
Assert.AreEqual(ray1, ray2, "Copied ray is equal to the original ray");
ray1.Origin.X = 0.0f;
Assert.AreNotEqual(ray1, ray2, "Modified copy is no longer equal to the original ray");
ray1.Origin.X = 100.0f;
ray1.Origin.Y = 0.0f;
Assert.AreNotEqual(ray1, ray2, "Modified copy is no longer equal to the original ray");
ray1.Origin.Y = 200.0f;
ray1.Direction.X = 0.0f;
Assert.AreNotEqual(ray1, ray2, "Modified copy is no longer equal to the original ray");
ray1.Direction.X = 300.0f;
ray1.Direction.Y = 0.0f;
Assert.AreNotEqual(ray1, ray2, "Modified copy is no longer equal to the original ray");
ray1.Direction.Y = 400.0f;
}
public void TestEqualityOperator()
{
Ray2 ray1 = new Ray2(new Vector2(100.0f, 200.0f), new Vector2(300.0f, 400.0f));
Ray2 ray2 = new Ray2(ray1);
Assert.AreEqual(ray1, ray2, "Copied ray is equal to the original ray");
ray1.Origin.X = 0.0f;
Assert.AreNotEqual(ray1, ray2, "Modified copy is no longer equal to the original ray");
ray1.Origin.X = 100.0f;
ray1.Origin.Y = 0.0f;
Assert.AreNotEqual(ray1, ray2, "Modified copy is no longer equal to the original ray");
ray1.Origin.Y = 200.0f;
ray1.Direction.X = 0.0f;
Assert.AreNotEqual(ray1, ray2, "Modified copy is no longer equal to the original ray");
ray1.Direction.X = 300.0f;
ray1.Direction.Y = 0.0f;
Assert.AreNotEqual(ray1, ray2, "Modified copy is no longer equal to the original ray");
ray1.Direction.Y = 400.0f;
}
public void TestClosestPointVertical()
{
Ray2 ray = new Ray2(new Vector2(100.0f, 0.0f), Vector2.UnitY);
Vector2 leftCap = ray.ClosestPointTo(new Vector2(200.0f, -2.0f));
Assert.AreEqual(new Vector2(100.0f, 0.0f), leftCap, "Closest point beyond lower end found");
Vector2 leftPoint = ray.ClosestPointTo(new Vector2(200.0f, 0.0f));
Assert.AreEqual(new Vector2(100.0f, 0.0f), leftPoint, "Closest point on lower end found");
Vector2 midLeftRight = ray.ClosestPointTo(new Vector2(200.0f, 0.5f));
Assert.AreEqual(new Vector2(100.0f, 0.5f), midLeftRight, "Closest point inmidst of line found");
Vector2 rightPoint = ray.ClosestPointTo(new Vector2(200.0f, 1.0f));
Assert.AreEqual(new Vector2(100.0f, 1.0f), rightPoint, "Closest point on upper end found");
Vector2 rightCap = ray.ClosestPointTo(new Vector2(200.0f, 3.0f));
Assert.AreEqual(new Vector2(100.0f, 3.0f), rightCap, "Closest point beyond upper end found");
}
public Ray2(Ray2 other) {
Origin = other.Origin;
Direction = other.Direction;
}
/// <summary>Checks whether another instance is equal to this instance</summary>
/// <param name="other">Other instance to compare to this instance</param>
/// <returns>True if the other instance is equal to this instance</returns>
public virtual bool Equals(Ray2 other) {
if(other == null)
return false;
else
return (this.Origin == other.Origin) && (this.Direction == other.Direction);
}
public Ray2(Ray2 other)
{
Origin = other.Origin;
Direction = other.Direction;
}
public void TestEqualityOperatorAgainstNull()
{
Ray2 line = new Ray2();
Assert.IsFalse(line.Equals(null), "Initialized Line is not equal to null");
}
public void TestClosestPointHorizontal() {
Ray2 ray = new Ray2(new Vector2(0.0f, 100.0f), Vector2.UnitX);
Vector2 leftCap = ray.ClosestPointTo(new Vector2(-2.0f, 200.0f));
Assert.AreEqual(
new Vector2(0.0f, 100.0f), leftCap, "Closest point beyond left end found"
);
Vector2 leftPoint = ray.ClosestPointTo(new Vector2(0.0f, 200.0f));
Assert.AreEqual(
new Vector2(0.0f, 100.0f), leftPoint, "Closest point on left end found"
);
Vector2 midLeftRight = ray.ClosestPointTo(new Vector2(0.5f, 200.0f));
Assert.AreEqual(
new Vector2(0.5f, 100.0f), midLeftRight, "Closest point inmidst of line found"
);
Vector2 rightPoint = ray.ClosestPointTo(new Vector2(1.0f, 200.0f));
Assert.AreEqual(
new Vector2(1.0f, 100.0f), rightPoint, "Closest point on right end found"
);
Vector2 rightCap = ray.ClosestPointTo(new Vector2(3.0f, 200.0f));
Assert.AreEqual(
new Vector2(3.0f, 100.0f), rightCap, "Closest point beyond right end found"
);
}
public void TestEqualityOperatorAgainstNull() {
Ray2 line = new Ray2();
Assert.IsFalse(line.Equals(null), "Initialized Line is not equal to null");
}
public void TestSerialization() {
XmlSerializer serializer = new XmlSerializer(typeof(Ray2));
System.IO.MemoryStream stream = new System.IO.MemoryStream();
Ray2 ray = new Ray2(new Vector2(123.0f, 456.0f), new Vector2(654.0f, 321.0f));
serializer.Serialize(stream, ray);
stream.Seek(0, System.IO.SeekOrigin.Begin);
Ray2 restored = (Ray2)serializer.Deserialize(stream);
Assert.AreEqual(ray, restored, "Deserialized ray matches serialized ray");
}
public void TestClosestPointVertical() {
Ray2 ray = new Ray2(new Vector2(100.0f, 0.0f), Vector2.UnitY);
Vector2 leftCap = ray.ClosestPointTo(new Vector2(200.0f, -2.0f));
Assert.AreEqual(new Vector2(100.0f, 0.0f), leftCap, "Closest point beyond lower end found");
Vector2 leftPoint = ray.ClosestPointTo(new Vector2(200.0f, 0.0f));
Assert.AreEqual(new Vector2(100.0f, 0.0f), leftPoint, "Closest point on lower end found");
Vector2 midLeftRight = ray.ClosestPointTo(new Vector2(200.0f, 0.5f));
Assert.AreEqual(new Vector2(100.0f, 0.5f), midLeftRight, "Closest point inmidst of line found");
Vector2 rightPoint = ray.ClosestPointTo(new Vector2(200.0f, 1.0f));
Assert.AreEqual(new Vector2(100.0f, 1.0f), rightPoint, "Closest point on upper end found");
Vector2 rightCap = ray.ClosestPointTo(new Vector2(200.0f, 3.0f));
Assert.AreEqual(new Vector2(100.0f, 3.0f), rightCap, "Closest point beyond upper end found");
}
