/usr/include/dcmtk/dcmimgle/dirotat.h is in libdcmtk-dev 3.6.2-3build3.
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*
* Copyright (C) 1996-2016, OFFIS e.V.
* All rights reserved. See COPYRIGHT file for details.
*
* This software and supporting documentation were developed by
*
* OFFIS e.V.
* R&D Division Health
* Escherweg 2
* D-26121 Oldenburg, Germany
*
*
* Module: dcmimgle
*
* Author: Joerg Riesmeier
*
* Purpose: DicomRotateTemplate (Header)
*
*/
#ifndef DIROTAT_H
#define DIROTAT_H
#include "dcmtk/config/osconfig.h"
#include "dcmtk/ofstd/ofcast.h"
#include "dcmtk/dcmimgle/dipixel.h"
#include "dcmtk/dcmimgle/ditranst.h"
/*---------------------*
* class declaration *
*---------------------*/
/** Template class to rotate images (on pixel data level).
* by steps of 90 degrees
*/
template<class T>
class DiRotateTemplate
: public DiTransTemplate<T>
{
public:
/** constructor.
* This method is used to rotate an image and store the result in the same storage area.
*
** @param pixel pointer to object where the pixel data are stored
* @param src_cols original width of the image
* @param src_rows original height of the image
* @param dest_cols new width of the image
* @param dest_rows new height of the image
* @param frames number of frames
* @param degree angle by which the image should be rotated
*/
DiRotateTemplate(DiPixel *pixel,
const Uint16 src_cols,
const Uint16 src_rows,
const Uint16 dest_cols,
const Uint16 dest_rows,
const Uint32 frames,
const int degree)
: DiTransTemplate<T>(0, src_cols, src_rows, dest_cols, dest_rows, frames)
{
if (pixel != NULL)
{
this->Planes = pixel->getPlanes();
if ((pixel->getCount() > 0) && (this->Planes > 0) &&
(pixel->getCount() == OFstatic_cast(unsigned long, src_cols) * OFstatic_cast(unsigned long, src_rows) * frames))
{
if (degree == 90)
rotateRight(OFstatic_cast(T **, pixel->getDataArrayPtr()));
else if (degree == 180)
rotateTopDown(OFstatic_cast(T **, pixel->getDataArrayPtr()));
else if (degree == 270)
rotateLeft(OFstatic_cast(T **, pixel->getDataArrayPtr()));
} else {
DCMIMGLE_WARN("could not rotate image ... corrupted data");
}
}
}
/** constructor.
* This method is used to perform only the preparation and to start rotation later with method 'rotateData()'
*
** @param planes number of planes (1 or 3)
* @param src_cols original width of the image
* @param src_rows original height of the image
* @param dest_cols new width of the image
* @param dest_rows new height of the image
* @param frames number of frames
*/
DiRotateTemplate(const int planes,
const Uint16 src_cols,
const Uint16 src_rows,
const Uint16 dest_cols,
const Uint16 dest_rows,
const Uint32 frames)
: DiTransTemplate<T>(planes, src_cols, src_rows, dest_cols, dest_rows, frames)
{
}
/** destructor
*/
virtual ~DiRotateTemplate()
{
}
/** choose algorithm depending on rotation angle
*
** @param src array of pointers to source image pixels
* @param dest array of pointers to destination image pixels
* @param degree angle by which the image should be rotated
*/
inline void rotateData(const T *src[],
T *dest[],
const int degree)
{
if (degree == 90)
rotateRight(src, dest);
else if (degree == 180)
rotateTopDown(src, dest);
else if (degree == 270)
rotateLeft(src, dest);
else
this->copyPixel(src, dest);
}
protected:
/** rotate source image left and store result in destination image
*
** @param src array of pointers to source image pixels
* @param dest array of pointers to destination image pixels
*/
inline void rotateLeft(const T *src[],
T *dest[])
{
if ((src != NULL) && (dest != NULL))
{
Uint16 x;
Uint16 y;
const T *p;
T *q;
T *r;
const unsigned long count = OFstatic_cast(unsigned long, this->Dest_X) * OFstatic_cast(unsigned long, this->Dest_Y);
for (int j = 0; j < this->Planes; ++j)
{
p = src[j];
r = dest[j];
for (unsigned long f = this->Frames; f != 0; --f)
{
r += count;
for (x = this->Dest_X; x != 0; --x)
{
q = r - x;
for (y = this->Dest_Y; y != 0; --y)
{
*q = *p++;
q -= this->Dest_X;
}
}
}
}
}
}
/** rotate source image right and store result in destination image
*
** @param src array of pointers to source image pixels
* @param dest array of pointers to destination image pixels
*/
inline void rotateRight(const T *src[],
T *dest[])
{
if ((src != NULL) && (dest != NULL))
{
Uint16 x;
Uint16 y;
const T *p;
T *q;
T *r;
const unsigned long count = OFstatic_cast(unsigned long, this->Dest_X) * OFstatic_cast(unsigned long, this->Dest_Y);
for (int j = 0; j < this->Planes; ++j)
{
p = src[j];
r = dest[j];
for (unsigned long f = this->Frames; f != 0; --f)
{
for (x = this->Dest_X; x != 0; --x)
{
q = r + x - 1;
for (y = this->Dest_Y; y != 0; --y)
{
*q = *p++;
q += this->Dest_X;
}
}
r += count;
}
}
}
}
/** rotate source image top-down and store result in destination image
*
** @param src array of pointers to source image pixels
* @param dest array of pointers to destination image pixels
*/
inline void rotateTopDown(const T *src[],
T *dest[])
{
if ((src != NULL) && (dest != NULL))
{
unsigned long i;
const T *p;
T *q;
const unsigned long count = OFstatic_cast(unsigned long, this->Dest_X) * OFstatic_cast(unsigned long, this->Dest_Y);
for (int j = 0; j < this->Planes; ++j)
{
p = src[j];
q = dest[j];
for (unsigned long f = this->Frames; f != 0; --f)
{
q += count;
for (i = count; i != 0; --i)
*--q = *p++;
q += count;
}
}
}
}
private:
/** rotate image left and store result in the same storage area
*
** @param data array of pointers to source/destination image pixels
*/
inline void rotateLeft(T *data[])
{
const unsigned long count = OFstatic_cast(unsigned long, this->Dest_X) * OFstatic_cast(unsigned long, this->Dest_Y);
T *temp = new T[count];
if (temp != NULL)
{
Uint16 x;
Uint16 y;
const T *p;
T *q;
T *r;
for (int j = 0; j < this->Planes; ++j)
{
r = data[j];
for (unsigned long f = this->Frames; f != 0; --f)
{
OFBitmanipTemplate<T>::copyMem(OFstatic_cast(const T *, r), temp, count); // create temporary copy of current frame
p = temp;
r += count;
for (x = this->Dest_X; x != 0; --x)
{
q = r - x;
for (y = this->Dest_Y; y != 0; --y)
{
*q = *p++;
q -= this->Dest_X;
}
}
}
}
delete[] temp;
}
}
/** rotate image right and store result in the same storage area
*
** @param data array of pointers to source/destination image pixels
*/
inline void rotateRight(T *data[])
{
const unsigned long count = OFstatic_cast(unsigned long, this->Dest_X) * OFstatic_cast(unsigned long, this->Dest_Y);
T *temp = new T[count];
if (temp != NULL)
{
Uint16 x;
Uint16 y;
const T *p;
T *q;
T *r;
for (int j = 0; j < this->Planes; ++j)
{
r = data[j];
for (unsigned long f = this->Frames; f != 0; --f)
{
OFBitmanipTemplate<T>::copyMem(OFstatic_cast(const T *, r), temp, count); // create temporary copy of current frame
p = temp;
for (x = this->Dest_X; x != 0; --x)
{
q = r + x - 1;
for (y = this->Dest_Y; y != 0; --y)
{
*q = *p++;
q += this->Dest_X;
}
}
r += count;
}
}
delete[] temp;
}
}
/** rotate image top-down and store result in the same storage area
*
** @param data array of pointers to source/destination image pixels
*/
inline void rotateTopDown(T *data[])
{
unsigned long i;
T *p;
T *q;
T t;
T *s;
const unsigned long count = OFstatic_cast(unsigned long, this->Dest_X) * OFstatic_cast(unsigned long, this->Dest_Y);
for (int j = 0; j < this->Planes; ++j)
{
s = data[j];
for (unsigned long f = this->Frames; f != 0; --f)
{
p = s;
q = s + count;
for (i = count / 2; i != 0; --i)
{
t = *p;
*p++ = *--q;
*q = t;
}
s += count;
}
}
}
};
#endif
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