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#include <stdio.h>
#include <stdlib.h>
#include "minc2.h"
/* Courtesy of Dr Jason Lerch
* A test of the dimensions ordering/hyperslab functions in minc2. The
* basic flow is the following:
* open an existing minc volume
* set the apparent dimension order to be different from the file order
* get the volume dimensions
* load the entire image into a buffer using the hyperslab function
* compare with single voxel value returned from single voxel functions.
*/
#define TESTRPT(msg, val) (error_cnt++, fprintf(stderr, \
"Error reported on line #%d, %s: %d\n", \
__LINE__, msg, val))
static int error_cnt = 0;
#define CZ 142
#define CY 245
#define CX 210
#define NDIMS 3
void create_test_file(void)
{
int r;
double start_values[3]={-6.96, -12.453, -9.48};
double separations[3]={0.09,0.09,0.09};
midimhandle_t hdim[NDIMS];
mihandle_t hvol;
unsigned short *buf = ( unsigned short *) malloc(CX * CY * CZ * sizeof(unsigned short));
int i;
long count[NDIMS];
long start[NDIMS];
miboolean_t flag=1;
double min = -1.0;
double max = 1.0;
r = micreate_dimension("zspace", MI_DIMCLASS_SPATIAL,
MI_DIMATTR_REGULARLY_SAMPLED, CZ, &hdim[0]);
r = micreate_dimension("yspace", MI_DIMCLASS_SPATIAL,
MI_DIMATTR_REGULARLY_SAMPLED, CY, &hdim[1]);
r = micreate_dimension("xspace", MI_DIMCLASS_SPATIAL,
MI_DIMATTR_REGULARLY_SAMPLED, CX, &hdim[2]);
r = miset_dimension_starts(hdim, NDIMS, start_values);
r = miset_dimension_separations(hdim, NDIMS, separations);
r = micreate_volume("hyperslab-test2.mnc", NDIMS, hdim, MI_TYPE_USHORT,
MI_CLASS_REAL, NULL, &hvol);
/* set slice scaling flag to true */
r = miset_slice_scaling_flag(hvol, flag);
r = micreate_volume_image(hvol);
for (i = 0; i < CZ*CY*CX; i++) {
buf[i] = (unsigned short) i * 0.01;
}
start[0] = start[1] = start[2] = 0;
count[0] = CZ;
count[1] = CY;
count[2] = CX;
r = miset_voxel_value_hyperslab(hvol, MI_TYPE_USHORT, start, count, buf);
/* Set random values to slice min and max for slice scaling*/
start[0] =start[1]=start[2]=0;
for (i=0; i < CZ; i++) {
start[0] = i;
min += 0.1;
max += 0.1;
r = miset_slice_range(hvol,start, 3, max, min);
}
r = miclose_volume(hvol);
}
int main(int argc, char **argv)
{
mihandle_t vol;
midimhandle_t dim[NDIMS];
unsigned int sizes[NDIMS];
unsigned long start[NDIMS];
unsigned long count[NDIMS];
unsigned long howfar[NDIMS];
unsigned long location[NDIMS];
double *buffer,value;
int r = 0;
static char *dimorder[] = {"xspace", "yspace", "zspace"};
printf("Creating image with slice scaling!! \n");
create_test_file();
printf("Opening hyperslab-test2.mnc! \n");
r = miopen_volume("hyperslab-test2.mnc", MI2_OPEN_READ, &vol);
if (r < 0) {
TESTRPT("failed to open image", r);
}
#ifdef APPARENTORDER
/* set the apparent dimension order to be xyz */
r = miset_apparent_dimension_order_by_name(vol, 3, dimorder);
/* get the apparent dimensions and their sizes */
r = miget_volume_dimensions( vol, MI_DIMCLASS_SPATIAL,
MI_DIMATTR_ALL, MI_DIMORDER_APPARENT,
3, dim);
r = miget_dimension_sizes( dim, 3, sizes );
#else
/* get the apparent dimensions and their sizes */
r = miget_volume_dimensions( vol, MI_DIMCLASS_SPATIAL,
MI_DIMATTR_ALL, MI_DIMORDER_FILE,
3, dim);
r = miget_dimension_sizes( dim, 3, sizes );
#endif
if (r == MI_NOERROR) {
printf("Sizes: %d, %d, %d\n", sizes[0], sizes[1], sizes[2]);
}
else {
fprintf(stderr, "Error getting dimension sizes\n");
}
/* try to play with hyperslab functions!! */
start[0] = 4;
start[1] = 3;
start[2] = 5;
howfar[0] = 120;
howfar[1] = 180;
howfar[2] = 110;
count[0] = howfar[0] - start[0];
count[1] = howfar[1] - start[1];
count[2] = howfar[2] - start[2];
/* Alocate memory for the hyperslab*/
buffer = (double *)malloc(count[0] * count[1] * count[2] * sizeof(double));
if (buffer == NULL) {
fprintf(stderr, "Error allocation memory.\n");
exit(-1);
}
/* Get real value hyperslab*/
printf("\n");
printf("Getting a real value hyperslab \n");
printf("Starting at %d, %d, %d \n", start[0], start[1], start[2]);
printf("Extending to %d, %d, %d \n", howfar[0], howfar[1], howfar[2]);
printf("\n");
if (miget_real_value_hyperslab(vol,MI_TYPE_DOUBLE, start, count, buffer)
< 0) {
fprintf(stderr, "Could not get hyperslab.\n");
exit(-1);
}
/* set an arbitrary location to print values from */
location[0] = 70; location[1] = 100; location[2] = 104;
printf("Test arbitrary location %d, %d, %d \n",
location[0], location[1], location[2]);
miget_real_value(vol, location, 3, &value);
printf("Test from hyperslab: %f \n",
*( buffer + (location[0] - start[0])*count[1]*count[2] +
(location[1]- start[1]) * count[2] + (location[2]- start[2])));
printf("Test from voxel scaled: %f\n", value);
miget_voxel_value(vol, location, 3, &value);
printf("Test voxel value itself: %f\n", value);
printf("\n");
printf("HMMMMMMMMMM! let's try something else \n");
printf("\n");
/* set another arbitrary location to print values from */
location[0] = 104; location[1] = 100; location[2] = 70;
printf("Test arbitrary location %d, %d, %d \n",
location[0], location[1], location[2]);
miget_real_value(vol, location, 3, &value);
printf("Test from hyperslab: %f \n",
*( buffer + (location[0] - start[0])*count[1]*count[2] +
(location[1]- start[1]) * count[2] + (location[2]- start[2])));
printf("Test from voxel scaled: %f\n", value);
miget_voxel_value(vol, location, 3, &value);
printf("Test voxel value itself: %f\n", value);
/* close volume*/
miclose_volume(vol);
if (error_cnt != 0) {
fprintf(stderr, "%d error%s reported\n",
error_cnt, (error_cnt == 1) ? "" : "s");
}
else {
fprintf(stderr, "\n No errors\n");
}
return (error_cnt);
}
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