Bibliothèque de traitements d'images en virgule flottante. http://la.buvette.org/photos/cumul/
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

73 lines
1.7 KiB

/*
* FLOATIMG
* rotation matricielle des images
* #coronamaison Mon 23 Mar 2020 11:45:59 AM CET
*/
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include "../floatimg.h"
extern int verbosity;
/* --------------------------------------------------------------------- */
int fimg_rotate_90(FloatImg *src, FloatImg *dst, int notused)
{
int foo;
int x, y, k;
float rgb[3];
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %p %p %d )\n", __func__,
src, dst, notused);
#endif
if (src->type != FIMG_TYPE_RGB) {
fprintf(stderr, "%s: src type %d not valid\n", __func__,
src->type);
return -6;
}
/* check if dst pic is not allocated */
if ( 0 == (dst->type | dst->width | dst->height) ) {
#if DEBUG_LEVEL
fprintf(stderr, "in %s, %p is empty\n", __func__, dst);
#endif
/* OK allocate a new fpic */
foo = fimg_create(dst, src->height, src->width, src->type);
if (foo) {
fprintf(stderr, "%s: err %d create new pic\n", __func__, foo);
return -887;
}
// if (verbosity>1) fimg_describe(dst, "new pic");
}
/* check if dst and src are conpatibles */
if ( (src->type != dst->type) ||
(src->width != dst->height) || (src->height != dst->width) ) {
fprintf(stderr, "%s: src & dst not compatibles\n", __func__);
return -888;
}
/*
* THIS IS A CRUDE IMPLEMENTATION
*/
for (y=0; y<src->height; y++) {
for (x=0; x<src->width; x++) {
fimg_get_rgb(src, x, y, rgb);
// XXX ??? j = (dst->height - x) - 1;
k = (dst->width - y) - 1;
#if DEBUG_LEVEL > 1
fprintf(stderr, "%6d %6d\n", k, j);
#endif
fimg_put_rgb(dst, k, x, rgb);
}
}
/* we don't have any cleanup to make */
return 0;
}
/* --------------------------------------------------------------------- */