3D Cartesian Domain
Specification
The 3D Cartesian domain (tracktable::domain::cartesian3d) concerns
points in a flat 3D space. These points are located with respect to
the origin. Unlike the terrestrial domain, there are no
discontinuities or distinguished points apart from the origin.
Units
Position in 3D Cartesian space is denoted (x, y, z). You, the user, can decide what those axes mean. Without a tie to some underlying physical domain they are purely abstract. Distances in this space are measured in dimensionless units. Speed is measured in units per second.
Module Contents
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class CartesianPoint3D : public tracktable::PointCartesian<3>
Bare point in flat 3D space
This class defines a point in 3D Euclidean space. Units have no real-world interpretation and (unlike the surface of the globe) space is isotropic.
Use this class instead of instantiating the
PointCartesiantemplate yourself.Subclassed by tracktable::TrajectoryPoint< CartesianPoint3D >
Public Types
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typedef PointCartesian<3> Superclass
Public Functions
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inline CartesianPoint3D()
Create an uninitialized point
Assume that the coordinates will be initialized to garbage values when you use this constructor.
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inline CartesianPoint3D(double x, double y, double z)
Initialize a point with x, y, z coordinates
The coordinates will be initialized to whatever values you specify.
- Parameters:
x – [in] X value to use for the point
y – [in] Y value to use for the point
z – [in] Z value to use for the point
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inline CartesianPoint3D(CartesianPoint3D const &other)
Copy constructor: make this point like another
- Parameters:
other – [in] Point to make a copy of
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inline CartesianPoint3D(Superclass const &other)
Initialize this point from its superclass
If you happen to have
PointCartesian<3>instances sitting around, this is where you use them. This is more for the compiler’s benefit than the user’s.- Parameters:
other – [in] Superclass to use as if it were a CartesianPoint3D
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inline virtual ~CartesianPoint3D()
Empty destructor
All of our resources are on the stack. We don’t have any real work to do here.
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inline CartesianPoint3D &operator=(CartesianPoint3D const &other)
Assignment operator
We delegate this explicitly to the superclass so that the compiler won’t try to do anything clever like copying pointers.
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typedef PointCartesian<3> Superclass
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class CartesianTrajectoryPoint3D : public tracktable::TrajectoryPoint<CartesianPoint3D>
Trajectory point in flat 3D space
This class defines a point in 3D Euclidean space along with an object ID, timestamp and named properties. Units have no real-world interpretation and (unlike the surface of the globe) space is isotropic.
Use this class instead of instantiating the
TrajectoryPointtemplate yourself.Public Types
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typedef TrajectoryPoint<CartesianPoint3D> Superclass
Public Functions
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inline CartesianTrajectoryPoint3D()
Create an uninitialized point
Assume that the coordinates will be initialized to garbage values when you use this constructor. The object ID, timestamp and properties will all be empty.
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inline CartesianTrajectoryPoint3D(double x, double y, double z)
Initialize a point with x, y, z coordinates
The coordinates will be initialized to whatever values you specify.
- Parameters:
x – [in] X value to use for the point
y – [in] Y value to use for the point
z – [in] Z value to use for the point
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inline CartesianTrajectoryPoint3D(CartesianTrajectoryPoint3D const &other)
Copy constructor: make this point like another
- Parameters:
other – [in] Point to make a copy of
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inline CartesianTrajectoryPoint3D(Superclass const &other)
Initialize this point from its superclass
If you happen to have
TrajectoryPoint<PointCartesian<3>>instances sitting around, this is where you use them. This is more for the compiler’s benefit than the user’s.- Parameters:
other – [in] Superclass to use as if it were a CartesianTrajectoryPoint3D
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inline virtual ~CartesianTrajectoryPoint3D()
Empty destructor
All of our resources are on the stack. We don’t have any real work to do here.
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inline CartesianTrajectoryPoint3D &operator=(CartesianTrajectoryPoint3D const &other)
Assignment operator
We delegate this explicitly to the superclass so that the compiler won’t try to do anything clever like copying pointers.
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typedef TrajectoryPoint<CartesianPoint3D> Superclass