lsst.geom g3f8e1907dc+a1a6176b8f
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A 2-d separable affine transform that can be used to map one interval to another. More...
#include <Scaling2d.h>
Public Member Functions | |
Scaling2d (Scaling1d const &x, Scaling1d const &y) noexcept | |
Construct from the given 1-d scalings. More... | |
Scaling2d (Scaling2d const &) noexcept=default | |
Default copy constructor. More... | |
Scaling2d (Scaling2d &&) noexcept=default | |
Default move constructor. More... | |
Scaling2d & | operator= (Scaling2d const &) noexcept=default |
Default copy assignment. More... | |
Scaling2d & | operator= (Scaling2d &&) noexcept=default |
Default move assignment. More... | |
Scaling1d const & | getX () const noexcept |
Return the 1-d scaling in the X direction. More... | |
Scaling1d const & | getY () const noexcept |
Return the 1-d scaling in the Y direction. More... | |
geom::Point2D | applyForward (geom::Point2D const &p) const noexcept |
Apply the transform in the forward direction. More... | |
geom::Point2D | applyInverse (geom::Point2D const &p) const noexcept |
Apply the inverse of the forward transform. More... | |
Scaling2d | inverted () const noexcept |
Invert the transform. More... | |
Scaling2d | then (Scaling2d const &second) const noexcept |
Compose two transforms. More... | |
A 2-d separable affine transform that can be used to map one interval to another.
The transform is represented in each dimension as an additive shift followed by a multiplicative scaling. Unlike a full affine transform, Scaling2d cannot include rotations.
Definition at line 48 of file Scaling2d.h.
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inlinenoexcept |
Construct from the given 1-d scalings.
Definition at line 52 of file Scaling2d.h.
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defaultnoexcept |
Default copy constructor.
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defaultnoexcept |
Default move constructor.
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inlinenoexcept |
Apply the transform in the forward direction.
Definition at line 73 of file Scaling2d.h.
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inlinenoexcept |
Apply the inverse of the forward transform.
Definition at line 78 of file Scaling2d.h.
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inlinenoexcept |
Return the 1-d scaling in the X direction.
Definition at line 67 of file Scaling2d.h.
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inlinenoexcept |
Return the 1-d scaling in the Y direction.
Definition at line 70 of file Scaling2d.h.
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inlinenoexcept |
Invert the transform.
If r = t.inverted()
, then r.applyForward(p)
is equivalent to t.applyInverse(p)
and r.applyInverse(q)
is equivalent to t.applyForward(q)
.
Definition at line 89 of file Scaling2d.h.
Default move assignment.
Default copy assignment.
Compose two transforms.
If r = a.then(b)
, then r.applyForward(p)
is equivalent to b.applyForward(a.applyForward(p))
and r.applyInverse(q)
is equivalent to a.applyInverse(b.applyInverse(q))
.
Definition at line 100 of file Scaling2d.h.