SPATMOD::IMAGE::HELPER_RESAMPLE Class Reference

Helper for resampling operations. More...

#include <spatmod/imagehelperresample.h>

List of all members.

Public Types
enum	FLAGS { FLAG_None = 0, FLAG_PullSinglePixels = 0x01, FLAG_CheckTargetValidity = 0x02 }
Public Member Functions
	HELPER_RESAMPLE ()
	~HELPER_RESAMPLE ()
ERRVALUE	BeginSection (const SECTION &SrcSection, BUFFER &WorkBuffer)
ERRVALUE	BeginSection (const SECTION &SrcSection)
ERRVALUE	ConvertCoordTgtToSrc (const TRANS2D_MAPGEN &TransTgtToSrc, const DOUBLE_ARRAY< DPOINT2D > &TgtCoord, DOUBLE_ARRAY< DPOINT2D > &SrcCoord, UINT8 *CoordValid) const
void	FreeWorkBuffer ()
ERRVALUE	ProcessRow (INT32 TgtRow, BUFFER &TgtBuffer, const DOUBLE_ARRAY< DPOINT2D > &SrcCoord)
ERRVALUE	ReserveWorkBuffer (INT32 MaxColumns, INT32 MaxRows)
ERRVALUE	Setup (STAGE *pStageSrc, RESAMPLEMETHOD ResampleMethod, FLAGS flags=FLAG_None)

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Detailed Description

Helper for resampling operations.

Provides method for processing single row. Optimized to avoid memory allocation during row processing.

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Member Enumeration Documentation

enum SPATMOD::IMAGE::HELPER_RESAMPLE::FLAGS

Flags for setup.

Enumerator:

FLAG_None
FLAG_PullSinglePixels	Pull pixels one at a time, for cases of large space between source pixels.
FLAG_CheckTargetValidity	Use initial target validity values to determine if should process pixel.

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Constructor & Destructor Documentation

SPATMOD::IMAGE::HELPER_RESAMPLE::HELPER_RESAMPLE

(

)

Constructor.

SPATMOD::IMAGE::HELPER_RESAMPLE::~HELPER_RESAMPLE

(

)

Destructor.

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Member Function Documentation

ERRVALUE SPATMOD::IMAGE::HELPER_RESAMPLE::BeginSection	(	const SECTION &	SrcSection,
		BUFFER &	WorkBuffer
	)

Begin processing section using shared work buffer.

Parameters:

	SrcSection	Section of source to resample from
	WorkBuffer	Work buffer, must remain in existence during processing

ERRVALUE SPATMOD::IMAGE::HELPER_RESAMPLE::BeginSection

(

const SECTION &

SrcSection

)

Begin processing section using own work buffer.

Work buffer will be resized if necessary.

Parameters:

SrcSection

Section of source to resample from

ERRVALUE SPATMOD::IMAGE::HELPER_RESAMPLE::ConvertCoordTgtToSrc	(	const TRANS2D_MAPGEN &	TransTgtToSrc,
		const DOUBLE_ARRAY< DPOINT2D > &	TgtCoord,
		DOUBLE_ARRAY< DPOINT2D > &	SrcCoord,
		UINT8 *	CoordValid
	)			const

Convert coordinates from target to source.

Only points with a corresponding nonzero entry in CoordValid may be processed. Any points that cannot be converted will have the corresponding CoordValid entry set to 0.

Parameters:

	TransTgtToSrc	Transformation from target to source coordinates
	TgtCoord	Target coordinates
	SrcCoord	Source coordinates returned, cannot be same array as TgtCoord
	CoordValid	Source coordinate validity passed/returned, cannot be NULL

void SPATMOD::IMAGE::HELPER_RESAMPLE::FreeWorkBuffer

(

)

[inline]

Free work buffer.

ERRVALUE SPATMOD::IMAGE::HELPER_RESAMPLE::ProcessRow	(	INT32	TgtRow,
		BUFFER &	TgtBuffer,
		const DOUBLE_ARRAY< DPOINT2D > &	SrcCoord
	)

Process row of pixels into target buffer.

Parameters:

	TgtRow	Row in target buffer
	TgtBuffer	Target buffer
	SrcCoord	Coordinates in source image, number of items determines number of output pixels

ERRVALUE SPATMOD::IMAGE::HELPER_RESAMPLE::ReserveWorkBuffer	(	INT32	MaxColumns,
		INT32	MaxRows
	)

Reserve work buffer with specified initial maximum size.

Parameters:

	MaxColumns	Maximum expected columns
	MaxRows	Maximum expected rows

ERRVALUE SPATMOD::IMAGE::HELPER_RESAMPLE::Setup	(	STAGE *	pStageSrc,
		RESAMPLEMETHOD	ResampleMethod,
		FLAGS	flags = FLAG_None
	)

Setup to process specified source.

Parameters:

	pStageSrc	Pointer to source stage
	ResampleMethod	Resampling method
	flags	Optional flags

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

• spatmod/imagehelperresample.h