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/*
* $Id: imtransform.cxx,v 4.2 2004/05/23 23:13:51 hut66au Exp $
*
* Imview, the portable image analysis application
* http://www.cmis.csiro.au/Hugues.Talbot/imview
* ----------------------------------------------------------
*
* Imview is an attempt to provide an image display application
* suitable for professional image analysis. It was started in
* 1997 and is mostly the result of the efforts of Hugues Talbot,
* Image Analysis Project, CSIRO Mathematical and Information
* Sciences, with help from others (see the CREDITS files for
* more information)
*
* Imview is Copyrighted (C) 1997-2001 by Hugues Talbot and was
* supported in parts by the Australian Commonwealth Science and
* Industry Research Organisation. Please see the COPYRIGHT file
* for full details. Imview also includes the contributions of
* many others. Please see the CREDITS file for full details.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
* */
/*------------------------------------------------------------------------
*
* imtransform.C
*
* This file contains code to tranform the raw data in place
* e.g: Rotations, shears, etc.
*
* This is a harder jobs than it seems, because we'll want to
* remember the transforms.
*
* Hugues Talbot
*
*-----------------------------------------------------------------------*/
#include "imnmspc.hxx" // namespace etc
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "imunistd.h"
#include "imview.hxx"
#include "pointfile.hxx"
#include "imageIO.hxx"
#include "imageViewer.hxx"
extern pointfile *PtFileMngr;
extern imageIO *IOBlackBox;
// this method rotates the buffers by 90 to the right
// must also work on 3d, multispectral images
// Multicomponent or time series are handled somewhere else
void imageIO::rotateRight()
{
if (imdata != 0) { // do we have an image?
if (overlay) { // we still need to rotate the overlay if present
unsigned char *p, *q;
int x, y;
dbgprintf("Rotating the overlay to the right\n");
p = overlay;
if (ovlspp == 1) {
q = new uchar[currImgWidth * currImgHeight];
for (y = 0 ; y < currImgHeight ; y++)
for (x = 0 ; x < currImgWidth ; x++)
q[(currImgHeight-y-1)+ currImgHeight*x] = *p++;
} else { // ovlspp == 3
q = new uchar[3 * currImgWidth * currImgHeight];
for (y = 0 ; y < currImgHeight ; y++)
for (x = 0 ; x < currImgWidth ; x++) {
int idx = 3 * ((currImgHeight-y-1)+ currImgHeight*x);
q[idx++] = *p++;
q[idx++] = *p++;
q[idx] = *p++;
}
}
delete[] overlay;
overlay = q;
}
if (currBuffp != 0) {
// this is going to be much slower than below
int sz=typeSize(currPixType);
unsigned char *p, *q;
int i, x, y, z, swp;
void **ncurrBuffp = 0;
if (dontFreeBuffers) {
// its a lot more complicated
ncurrBuffp = (void **)malloc(currImgNbSamples * sizeof(void*));
if (ncurrBuffp == 0)
errprintf("This image can't be rotated due to memory problems\n");
}
for (i = 0 ; i < currImgNbSamples ; i++) {
p = (uchar *)currBuffp[i];
// the currBuffps are malloced, not newed
if ((q = (uchar *) malloc(currImgWidth * currImgHeight * currImgThickness * sz *sizeof(char))) != NULL) {
for (z = 0 ; z < currImgThickness ; z++) {
for (y = 0 ; y < currImgHeight ; y++) {
for (x = 0 ; x < currImgWidth ; x++) {
memcpy(q + sz*(currImgHeight*currImgWidth*z + ((currImgHeight-y-1)+currImgHeight*x)),
p, sz);
p += sz;
}
}
}
if (!dontFreeBuffers) {
free(currBuffp[i]);
currBuffp[i] = q;
} else {
ncurrBuffp[i] = q; // save to a different buffer
}
} else {
int l;
errprintf("Not enough memory to rotate image\n");
if (dontFreeBuffers) {
for (l = 0 ; l < i ; l++)
free(ncurrBuffp[l]);
free(ncurrBuffp);
}
// nothing further can be done for the other case
// as the images have been rotated already.
return;
}
}
swp = currImgWidth;
currImgWidth = currImgHeight;
currImgHeight = swp;
if (dontFreeBuffers) {
currBuffp = ncurrBuffp; // don't worry, currBuffp is not lost.
dontFreeBuffers = false; // these new buffers, we can free.
}
} else {
// much simpler case
unsigned char *p, *q;
int x, y, c, swp;
// we only need to rotate the display buffer.
dbgprintf("2D CHAR image: only rotating the display buffer\n");
p = imdata;
// on the other hand, imdata is newed, not malloced!
q = new uchar[currImgWidth * currImgHeight * currImgNbSamples];
for (y = 0 ; y < currImgHeight ; y++)
for (x = 0 ; x < currImgWidth ; x++)
for (c = 0 ; c < currImgNbSamples ; c++)
q[currImgNbSamples * ((currImgHeight-y-1)+currImgHeight*x) + c] = *p++;
delete[] imdata; // this gets rid of the old buffer
imdata = q;
// swaps height and width of the buffer
swp = currImgWidth;
currImgWidth = currImgHeight;
currImgHeight = swp;
}
// rotate the points, if any
PtFileMngr->rotate90m();
}
}
// This method rotates the buffers by 90 to the left
// must also work on 3d multispectral images.
void imageIO::rotateLeft()
{
if (imdata != 0) {
if (overlay) {
unsigned char *p, *q;
int x, y;
dbgprintf("Rotating the overlay to the left\n");
p = overlay;
if (ovlspp == 1) {
q = new uchar[currImgWidth * currImgHeight];
for (y = 0 ; y < currImgHeight ; y++)
for (x = 0 ; x < currImgWidth ; x++)
q[y + currImgHeight*(currImgWidth-x-1)] = *p++;
} else { //ovlspp == 3
q = new uchar[3 * currImgWidth * currImgHeight];
for (y = 0 ; y < currImgHeight ; y++)
for (x = 0 ; x < currImgWidth ; x++) {
int idx = 3 * (y + currImgHeight*(currImgWidth-x-1));
q[idx++] = *p++;
q[idx++] = *p++;
q[idx] = *p++;
}
}
delete[] overlay;
overlay = q;
}
if (currBuffp != 0) {
// this is going to be much slower than below
int sz=typeSize(currPixType);
unsigned char *p, *q;
int i, x, y, z, swp;
void **ncurrBuffp = 0;
if (dontFreeBuffers) {
// its a lot more complicated
ncurrBuffp = (void **)malloc(currImgNbSamples * sizeof(void*));
if (ncurrBuffp == 0)
errprintf("This image can't be rotated due to memory problems\n");
}
for (i = 0 ; i < currImgNbSamples ; i++) {
p = (uchar *)currBuffp[i];
// the currBuffps are malloced, not newed
if ((q = (uchar *) malloc(currImgWidth * currImgHeight * currImgThickness * sz)) != NULL) {
for (z = 0 ; z < currImgThickness ; z++) {
for (y = 0 ; y < currImgHeight ; y++) {
for (x = 0 ; x < currImgWidth ; x++) {
memcpy(q + sz*(currImgHeight*currImgWidth*z + (y + currImgHeight*(currImgWidth-x-1))),
p, sz);
p += sz;
}
}
}
if (!dontFreeBuffers) {
free(currBuffp[i]);
currBuffp[i] = q;
} else {
ncurrBuffp[i] = q; // save to a different buffer
}
} else {
int l;
errprintf("Not enough memory to rotate image\n");
if (dontFreeBuffers) {
for (l = 0 ; l < i ; l++)
free(ncurrBuffp[l]);
free(ncurrBuffp);
}
// nothing further can be done for the other case
// as the images have been rotated already.
return;
}
}
swp = currImgWidth;
currImgWidth = currImgHeight;
currImgHeight = swp;
if (dontFreeBuffers) {
currBuffp = ncurrBuffp; // don't worry, currBuffp is not lost.
dontFreeBuffers = false; // these new buffers, we can free.
}
} else {
unsigned char *p, *q;
int x, y, c, swp;
// we only need to rotate the display buffer.
dbgprintf("2D CHAR image: only rotating the display buffer\n");
p = imdata;
// on the other hand, imdata is newed, not malloced!
q = new uchar[currImgWidth * currImgHeight * currImgNbSamples];
for (y = 0 ; y < currImgHeight ; y++)
for (x = 0 ; x < currImgWidth ; x++)
for (c = 0 ; c < currImgNbSamples ; c++)
q[currImgNbSamples * (y + currImgHeight*(currImgWidth-x-1)) + c] = *p++;
delete[] imdata; // this gets rid of the old buffer
imdata = q;
// swaps height and width of the buffer
swp = currImgWidth;
currImgWidth = currImgHeight;
currImgHeight = swp;
}
// rotate the points, if any
PtFileMngr->rotate90p();
}
}
// This method rotates the buffers by 180 degree. It is very efficient.
// must also work on 3d multispectral images.
void imageIO::rotate180()
{
if (imdata != 0) {
if (overlay) {
unsigned char *p, *q, swp;
dbgprintf("Rotating the overlay 180 degrees\n");
p = overlay;
if (ovlspp == 1) {
q = p + currImgHeight*currImgWidth - 1;
while (p < q) {
swp = *p;
*p++ =*q;
*q-- = swp;
}
} else { // ovlspp == 3
q = p + 3 * currImgHeight*currImgWidth - 3;
while (p < q) {
// R
swp = *p;
*p++ =*q;
*q++ = swp;
// G
swp = *p;
*p++ =*q;
*q++ = swp;
// B
swp = *p;
*p++ =*q;
*q = swp;
//
q -= 5; // would be 6 if we had done *q++ 2 lines earlier...
}
}
// in place rotation
}
if (currBuffp != 0) {
// this is going to be much slower than below
int sz=typeSize(currPixType);
unsigned char *p, *q, swp;
int i, z, c;
// no buffer reallocation here!
for (i = 0 ; i < currImgNbSamples ; i++) {
for (z = 0 ; z < currImgThickness ; z++) {
p = (uchar *)currBuffp[i] + currImgWidth * currImgHeight * sz * z;
q = p + (currImgHeight*currImgWidth - 1) * sz;
while (p < q) {
for (c = 0 ; c < sz ; c++) {
swp = *p;
*p++ =*q;
*q++ = swp;
}
q -= 2*sz;
}
}
}
} else {
unsigned char *p, *q, swp;
int c;
// we only need to rotate the display buffer.
dbgprintf("2D CHAR image: only rotating the display buffer\n");
p = imdata;
// no buffer reallocation here!
q = p + (currImgHeight*currImgWidth - 1) * currImgNbSamples;
while (p < q) {
for (c = 0 ; c < currImgNbSamples ; c++) {
swp = *p;
*p++ =*q;
*q++ = swp;
}
q -= 2*currImgNbSamples;
}
}
}
}
// This method performs an horizontal flip. It is very efficient.
// must also work on 3d multispectral images.
void imageIO::fliph()
{
if (imdata != 0) {
if (overlay) {
unsigned char *p, *q, *swp;
int y;
swp = new uchar[ovlspp * currImgWidth];
p = overlay;
q = p + ovlspp * currImgWidth * (currImgHeight - 1);
dbgprintf("Flipping the overlay buffer horizontally\n");
for (y = 0 ; y < currImgHeight/2 ; y++) {
memcpy(swp, p, ovlspp * currImgWidth);
memcpy(p, q, ovlspp * currImgWidth);
memcpy(q, swp, ovlspp * currImgWidth);
p += ovlspp * currImgWidth;
q -= ovlspp * currImgWidth;
}
delete[] swp;
}
if (currBuffp != 0) {
// this is going to be much slower than below
int sz=typeSize(currPixType);
unsigned char *p, *q, *swp;
int i, y, z;
// this is just a temp buffer, it can be newed.
swp = new uchar[currImgWidth*sz];
for (i = 0 ; i < currImgNbSamples ; i++) {
for (z = 0 ; z < currImgThickness ; z++) {
p = (uchar *)currBuffp[i] + currImgWidth * currImgHeight * sz * z;
q = p + ((currImgHeight-1)*currImgWidth) * sz;
for (y = 0 ; y < currImgHeight/2 ; y++) {
memcpy(swp, p, currImgWidth*sz);
memcpy(p, q, currImgWidth*sz);
memcpy(q, swp, currImgWidth*sz);
p += currImgWidth*sz;
q -= currImgWidth*sz;
}
}
}
// swap buffer life ends here
delete[] swp;
} else {
unsigned char *p, *q, *swp;
int y;
// we only need to rotate the display buffer.
dbgprintf("2D CHAR image: only flipping horizontally the display buffer\n");
p = imdata;
q = p + (currImgWidth * (currImgHeight - 1)) * currImgNbSamples;
// same story as above with respect to temp buff.
swp = new uchar[currImgWidth*currImgNbSamples];
for (y = 0 ; y < currImgHeight/2 ; y++) {
memcpy(swp, p, currImgWidth*currImgNbSamples);
memcpy(p, q, currImgWidth*currImgNbSamples);
memcpy(q, swp, currImgWidth*currImgNbSamples);
p += currImgWidth*currImgNbSamples;
q -= currImgWidth*currImgNbSamples;
}
delete[] swp;
}
// flip the points
PtFileMngr->fliph();
}
}
// This method performs a ver flip. It is not as efficient as the previous one
// must also work on 3d multispectral images.
void imageIO::flipv()
{
if (imdata != 0) {
if (overlay) {
unsigned char *p, *q, swp;
int x, y;
dbgprintf("Flipping the overlay buffer vertically\n");
if (ovlspp == 1) {
for (y = 0 ; y < currImgHeight ; y++) {
p = overlay + currImgWidth * y;
q = p + (currImgWidth-1);
for (x = 0 ; x < currImgWidth/2 ; x++) {
swp = *p;
*p++ = *q;
*q-- = swp;
}
}
} else { // == 3
for (y = 0 ; y < currImgHeight ; y++) {
p = overlay + 3 * currImgWidth * y;
q = p + 3 * (currImgWidth - 1);
for (x = 0 ; x < currImgWidth/2 ; x++) {
// R
swp = *p;
*p++ = *q;
*q++ = swp;
// G
swp = *p;
*p++ = *q;
*q++ = swp;
// B
swp = *p;
*p = *q;
*q = swp;
// inc
q -= 5; // we only did 2 `++'s
}
}
}
}
if (currBuffp != 0) {
// this is going to be much slower than below
int sz=typeSize(currPixType);
unsigned char *p, *q, swp;
int i, x, y, z, c;
for (i = 0 ; i < currImgNbSamples ; i++) {
for (z = 0 ; z < currImgThickness ; z++) {
for (y = 0 ; y < currImgHeight ; y++) {
p = (uchar *)currBuffp[i] + currImgWidth * sz * (currImgHeight * z + y);
q = p + (currImgWidth-1) * sz;
for (x = 0 ; x < currImgWidth/2 ; x++) {
for (c = 0 ; c < sz; c++) {
swp = *p;
*p++ = *q;
*q++ = swp;
}
q -= 2*sz;
}
}
}
}
} else {
unsigned char *p, *q, swp;
int x, y, c;
// we only need to rotate the display buffer.
dbgprintf("2D CHAR image: only flipping vertically the display buffer\n");
for (y = 0 ; y < currImgHeight ; y++) {
p = imdata + currImgWidth * y * currImgNbSamples;
q = p + (currImgWidth-1) * currImgNbSamples;
for (x = 0 ; x < currImgWidth/2 ; x++) {
for (c = 0 ; c < currImgNbSamples; c++) {
swp = *p;
*p++ = *q;
*q++ = swp;
}
q -= 2*currImgNbSamples;
}
}
}
// flip the points
PtFileMngr->flipv();
}
}
// all the 3D rotation are more or less the same (optimization are impossible)
// This is what happens when you can't rely on templates...
#define rotinnerloop(P,Q,R) \
do { for (z = 0 ; z < currImgThickness ; z++) { \
for (y = 0 ; y < currImgHeight ; y++) { \
for (x = 0 ; x < currImgWidth ; x++) { \
*((Q) + R(x,y,z)) = *(P)++; \
} \
} \
} } while (0)
void imageIO::rotate3Dgeneric(rot3dtransf *myrotf, long nbplanepix)
{
int sz=typeSize(currPixType);
unsigned char *p, *q;
int i, x, y, z;
void **ncurrBuffp = 0;
assert(currBuffp != 0);
if (dontFreeBuffers) {
// things are a little more complicated
ncurrBuffp = (void **)malloc(currImgNbSamples * sizeof(void*));
if (ncurrBuffp == 0)
errprintf("This image can't be rotated due to memory problems\n");
}
for (i = 0 ; i < currImgNbSamples ; i++) {
p = (uchar *)currBuffp[i];
// the currBuffps are malloced, not newed
if ((q = (uchar *) malloc(currImgWidth * currImgHeight * currImgThickness * sz *sizeof(char))) != NULL) {
switch (sz) {
case 1:
rotinnerloop(p,q,myrotf);
break;
case 2: {
short *ps, *qs;
ps = (short*)p;
qs = (short*)q;
rotinnerloop(ps,qs,myrotf);
}
break;
case 4: {
int *pi, *qi;
pi = (int*)p;
qi = (int*)q;
rotinnerloop(pi,qi,myrotf);
}
break;
case 8: {
double *pd, *qd;
pd = (double*)p;
qd = (double*)q;
rotinnerloop(pd,qd,myrotf);
}
break;
default:
errprintf("Unhandled pixel type in 3D rotation\n");
break;
}
if (!dontFreeBuffers) {
free(currBuffp[i]);
currBuffp[i] = q;
} else {
ncurrBuffp[i] = q; // save to a different buffer
}
} else {
int l;
errprintf("Not enough memory to rotate image\n");
if (dontFreeBuffers) {
for (l = 0 ; l < i ; l++)
free(ncurrBuffp[l]);
free(ncurrBuffp);
}
// nothing further can be done for the other case
// as the images have been rotated already.
return;
}
}
if (dontFreeBuffers) {
currBuffp = ncurrBuffp; // don't worry, currBuffp is not lost.
dontFreeBuffers = false; // these new buffers, we can free.
}
// Rotate the overlay if present
if (overlay) {
// no optimization is possible
dbgprintf("Rotating the overlay up (in the 3D sense)\n");
unsigned char *p, *q;
int x, y;
p = overlay;
if (ovlspp == 1) {
q = new uchar[currImgWidth * currImgHeight];
for (z = 0 ; z < currImgThickness ; ++z)
for (y = 0 ; y < currImgHeight ; ++y)
for (x = 0 ; x < currImgWidth ; ++x)
q[myrotf(x,y,z)] = *p++;
} else { //ovlspp == 3
q = new uchar[3 * currImgWidth * currImgHeight];
for (z = 0 ; z < currImgThickness ; ++z)
for (y = 0 ; y < currImgHeight ; ++y)
for (x = 0 ; x < currImgWidth ; ++x) {
int idx = 3 * (myrotf(x,y,z));
q[idx++] = *p++;
q[idx++] = *p++;
q[idx] = *p++;
}
}
delete[] overlay;
overlay = q;
}
}
// this method rotates the buffers by 90 degree `up'
// This *only* works on 3D image.
// must also work multispectral images
// Multicomponent or time series are handled somewhere else
static long transf_rot_3d_up(int x, int y, int z)
{
return ((IOBlackBox->imageHeight()-y-1) * IOBlackBox->imageWidth() * IOBlackBox->imageThickness() + z * IOBlackBox->imageWidth() + x);
}
void imageIO::rotate3Dup()
{
if (imdata != 0) {
int swp;
long nbplanepix = IOBlackBox->imageWidth() * IOBlackBox->imageThickness();
rotate3Dgeneric(transf_rot_3d_up, nbplanepix);
// swapping Y and Z
swp = currImgHeight;
currImgHeight = currImgThickness;
currImgThickness = swp;
// not sure this is correct...
swp = yOffset;
yOffset = zOffset;
zOffset = swp;
// to be safe
currZpos = 0;
// rotate the points, if any
PtFileMngr->rotate3dup();
}
}
static long transf_rot_3d_down(int x, int y, int z)
{
return (y * IOBlackBox->imageWidth() * IOBlackBox->imageThickness() + (IOBlackBox->imageThickness() - z -1) * IOBlackBox->imageWidth() + x);
}
void imageIO::rotate3Ddown()
{
if (imdata != 0) {
int swp;
long nbplanepix = IOBlackBox->imageWidth() * IOBlackBox->imageThickness();
rotate3Dgeneric(transf_rot_3d_down, nbplanepix);
// swapping Y and Z
swp = currImgHeight;
currImgHeight = currImgThickness;
currImgThickness = swp;
// not sure this is correct...
swp = yOffset;
yOffset = zOffset;
zOffset = swp;
// to be safe
currZpos = 0;
// rotate the points, if any
PtFileMngr->rotate3ddown();
}
}
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