public void TestMassProperties() {
Box3 testBox = new Box3(
Matrix.CreateTranslation(105.0f, 110.0f, 115.0f),
new Vector3(5.0f, 10.0f, 15.0f) // these are extents, not dimensions!
);
Assert.AreEqual(
new Vector3(105.0f, 110.0f, 115.0f), testBox.CenterOfMass,
"Center of mass is correctly positioned"
);
Assert.AreEqual(6000.0f, testBox.Mass, "Mass of box is exactly determined");
Assert.AreEqual(2200.0f, testBox.SurfaceArea, "Surface area of box is exactly determined");
}
public void TestMassProperties()
{
Box3 testBox = new Box3(
Matrix.CreateTranslation(105.0f, 110.0f, 115.0f),
new Vector3(5.0f, 10.0f, 15.0f) // these are extents, not dimensions!
);
Assert.AreEqual(
new Vector3(105.0f, 110.0f, 115.0f), testBox.CenterOfMass,
"Center of mass is correctly positioned"
);
Assert.AreEqual(6000.0f, testBox.Mass, "Mass of box is exactly determined");
Assert.AreEqual(2200.0f, testBox.SurfaceArea, "Surface area of box is exactly determined");
}
/// <summary>Visit an oriented box</summary> /// <param name="box">Box to visit</param> public abstract void Visit(Box3 box);
/// <summary>Determines if the volume clips the box</summary>
/// <param name="box">Box that will be checked for intersection</param>
/// <returns>True if the objects overlap</returns>
public bool Intersects(Box3 box) {
return Collisions.AabbObbCollider.CheckContact(
Extents, box.Transform, box.Extents
);
}
public Box3(Box3 other)
: this(other.Transform, other.Extents) { }
/// <summary>Determines where the range clips a box</summary>
/// <param name="box">Box that will be checked for intersection</param>
/// <returns>The times at which the range enters or leaves the volume</returns>
public LineContacts FindContacts(Box3 box) {
// Convert line to box coordinates
Vector3 offset = Origin - box.Center;
Vector3 relativePosition = new Vector3(
Vector3.Dot(offset, box.Transform.Right),
Vector3.Dot(offset, box.Transform.Up),
Vector3.Dot(offset, box.Transform.Forward)
);
Vector3 relativeDirection = new Vector3(
Vector3.Dot(Direction, box.Transform.Right),
Vector3.Dot(Direction, box.Transform.Up),
Vector3.Dot(Direction, box.Transform.Forward)
);
return Collisions.Ray3Aabb3Collider.FindContacts(
relativePosition, relativeDirection, box.Dimensions / 2.0f
);
}
/// <summary>Visit an oriented box</summary> /// <param name="box">Box to visit</param> public abstract void Visit(Box3 box);
/// <summary>Determines if the volume clips the box</summary>
/// <param name="box">Box that will be checked for intersection</param>
/// <returns>True if the objects overlap</returns>
public bool Intersects(Box3 box)
{
throw new NotImplementedException("Not implemented yet");
}
/// <summary>Determines if the volume clips the box</summary>
/// <param name="box">Box that will be checked for intersection</param>
/// <returns>True if the objects overlap</returns>
public bool Intersects(Box3 box) {
return Collisions.ObbSphereCollider.CheckContact(
box.Transform, box.Extents, this.Center, this.Radius
);
}
public Box3(Box3 other)
: this(other.Transform, other.Extents)
{
}
/// <summary>Determines if the volume clips the box</summary>
/// <param name="box">Box that will be checked for intersection</param>
/// <returns>True if the objects overlap</returns>
public bool Intersects(Box3 box)
{
return(Collisions.ObbObbCollider.CheckContact(
this.Transform, this.Extents, box.Transform, box.Extents
));
}
/// <summary>Determines where the range clips a box</summary>
/// <param name="box">Box that will be checked for intersection</param>
/// <returns>The times at which the range enters or leaves the volume</returns>
public LineContacts FindContacts(Box3 box) {
throw new NotImplementedException();
/*
// Convert line to box coordinates
Vector3 offset = Start - box.Center;
Vector3 relativePosition = new Vector3(
Vector3.Dot(offset, box.Transform.Right),
Vector3.Dot(offset, box.Transform.Up),
Vector3.Dot(offset, box.Transform.Forward)
);
Vector3 direction = End - Start;
Vector3 relativeDirection = new Vector3(
Vector3.Dot(direction, box.Transform.Right),
Vector3.Dot(direction, box.Transform.Up),
Vector3.Dot(direction, box.Transform.Forward)
);
return filterContacts(
Collisions.Line3Aabb3Collider.FindContacts(
relativePosition, relativeDirection, box.Dimensions / 2.0f
)
);
*/
}
/// <summary>Determines if the volume clips the box</summary>
/// <param name="box">Box that will be checked for intersection</param>
/// <returns>True if the objects overlap</returns>
public bool Intersects(Box3 box)
{
return(Collisions.ObbSphereCollider.CheckContact(
box.Transform, box.Extents, this.Center, this.Radius
));
}
/// <summary>Determines if the volume clips the box</summary>
/// <param name="box">Box that will be checked for intersection</param>
/// <returns>True if the objects overlap</returns>
public bool Intersects(Box3 box) {
throw new NotImplementedException("Not implemented yet");
}
/// <summary>Determines where the range clips a box</summary>
/// <param name="box">Box that will be checked for intersection</param>
/// <returns>The times at which the range enters or leaves the volume</returns>
public LineContacts FindContacts(Box3 box) {
// Convert line to box coordinates
Vector3 difference = Offset - box.Center;
Vector3 relativeCenter = new Vector3(
Vector3.Dot(difference, box.Transform.Right),
Vector3.Dot(difference, box.Transform.Up),
Vector3.Dot(difference, box.Transform.Forward)
);
Vector3 relativeDirection = new Vector3(
Vector3.Dot(Direction, box.Transform.Right),
Vector3.Dot(Direction, box.Transform.Up),
Vector3.Dot(Direction, box.Transform.Forward)
);
return Collisions.Line3Aabb3Collider.FindContacts(
relativeCenter, relativeDirection, box.Dimensions / 2.0f
);
}
