InternalZGY::ImplicitLinearTransform2d Class Reference

#include <iltf2d.h>

Classes
struct	TiePoint

Public Types
typedef double	value_type
typedef ImplicitLinearTransform2d	this_type

Public Member Functions
	ImplicitLinearTransform2d ()
	ImplicitLinearTransform2d (const TiePoint &pt0, const TiePoint &pt1, const TiePoint &pt2)
bool	operator== (const this_type &other) const
bool	operator!= (const this_type &other) const
bool	Compare (const this_type &other, const value_type &errtol=0) const
this_type &	Push (const this_type &other)
this_type &	Translate (value_type t0, value_type t1)
this_type &	Rotate (value_type r)
this_type &	Scale (value_type s0, value_type s1)
void	Apply (value_type *b, const value_type *a) const
void	operator() (value_type *b, const value_type *a) const

Static Public Member Functions
static TiePoint	makeTiePoint ()
static TiePoint	makeTiePoint (value_type a0, value_type a1, value_type b0, value_type b1)
static this_type	Identity ()

Detailed Description

This class represents a linear transform T: R^2 -> R^2 from 2-dimensional Euclidean space A to 2-dimensional Euclidean space B, defined implicitly by three given tie points.

Member Typedef Documentation

this_type

typedef ImplicitLinearTransform2d InternalZGY::ImplicitLinearTransform2d::this_type

Type of values processed by this class.

Constructor & Destructor Documentation

ImplicitLinearTransform2d() [1/2]

InternalZGY::ImplicitLinearTransform2d::ImplicitLinearTransform2d

(

)

Default constructor. Produces 1-to-1 mapping.

ImplicitLinearTransform2d() [2/2]

InternalZGY::ImplicitLinearTransform2d::ImplicitLinearTransform2d	(	const TiePoint &	pt0,
		const TiePoint &	pt1,
		const TiePoint &	pt2
	)

Construct from three tie-points. Fails by throwing an exception if the tie-points don't span a 2-dimensional space (i.e. lie along a straight line in either space).

Parameters

pt0	First tie-point.
pt1	Second tie-point.
pt2	Third tie-point.

Member Function Documentation

Apply()

void InternalZGY::ImplicitLinearTransform2d::Apply	(	value_type *	b,
		const value_type *	a
	)		const

Convert from space A to space B.

Parameters

b	Pointer to buffer holding (at least) two elements of value_type which will receive the transformed coordinate in B.
a	Pointer to buffer holding (at least) two elements of value_type serving as the A coordinate to transform.

Compare()

bool InternalZGY::ImplicitLinearTransform2d::Compare	(	const this_type &	other,
		const value_type &	errtol = 0
	)		const

Parameters

other	Instance to compare with.
errtol	Entry-by-entry absolute error tolerance.

Returns

True if other is equal to self, otherwise false.

Identity()

ImplicitLinearTransform2d InternalZGY::ImplicitLinearTransform2d::Identity ( )

static

Returns

Identity (one-to-one) transform.

makeTiePoint()

static TiePoint InternalZGY::ImplicitLinearTransform2d::makeTiePoint ( )

static

Partial workaround for problems on Windows with forcing instantiation of the above. Define member functions to create instances. Unfortunately this just solves part of the problem, since the compiler may generate calls to the default constructor.

operator!=()

bool InternalZGY::ImplicitLinearTransform2d::operator!=

(

const this_type &

other

)

const

Parameters

other

Instance to compare with.

Returns

False if other is equal to self, otherwise true.

operator==()

bool InternalZGY::ImplicitLinearTransform2d::operator==

(

const this_type &

other

)

const

Parameters

other

Instance to compare with.

Returns

True if other is equal to self, otherwise false.

Push()

ImplicitLinearTransform2d & InternalZGY::ImplicitLinearTransform2d::Push

(

const this_type &

other

)

Push another transform onto this one, i.e. front-multiply it with this.

Parameters

other

The other transform.

Returns

Reference to self.

Rotate()

ImplicitLinearTransform2d & InternalZGY::ImplicitLinearTransform2d::Rotate

(

value_type

r

)

Parameters

r	Rotation in radians counter-clockwise relative to first axis (polar rotation).

Returns

Reference to self.

Scale()

ImplicitLinearTransform2d & InternalZGY::ImplicitLinearTransform2d::Scale	(	value_type	s0,
		value_type	s1
	)

Parameters

s0	Scaling in first dimension.
s1	Scaling in second dimension.

Returns

Reference to self.

Translate()

ImplicitLinearTransform2d & InternalZGY::ImplicitLinearTransform2d::Translate	(	value_type	t0,
		value_type	t1
	)

Parameters

t0	Translation in first dimension.
t1	Translation in second dimension.

Returns

Reference to self.

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The documentation for this class was generated from the following files:

• impl/iltf2d.h
• impl/iltf2d.cpp