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5 changed files with 13 additions and 93 deletions

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@ -131,7 +131,7 @@ approprié, par exemple
\texttt{/usr/local/include} et \texttt{/usr/local/lib}. \texttt{/usr/local/include} et \texttt{/usr/local/lib}.
% ------------------------------------------------------------------- % -------------------------------------------------------------------
\section{Utilisation coté codeur} \section{Utilisation}
Classiquement, il y a un fichier à inclure, \texttt{floatimg.h}, Classiquement, il y a un fichier à inclure, \texttt{floatimg.h},
contenant un certain nombre de contenant un certain nombre de
@ -296,7 +296,7 @@ Il reste plein de choses à faire pour que ce soit vraiment utilisable.
\begin{itemize} \begin{itemize}
\item Import/export au format \textsc{tiff}\index{tiff}. \item Import/export au format \textsc{tiff}\index{tiff}.
\item Remplacer le « fait-maison » par \textsc{libnetpbm}. \item Remplacer le « fait-maison » par \textscq{libnetpbm}.
\item Compléter les traitements mathémathiques (eg le gamma\index{gamma}). \item Compléter les traitements mathémathiques (eg le gamma\index{gamma}).
\ \
\end{itemize} \end{itemize}

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@ -46,9 +46,6 @@ int fimg_plot_rgb (FloatImg *head, int x, int y, float r, float g, float b);
int fimg_clear(FloatImg *fimg); int fimg_clear(FloatImg *fimg);
int fimg_add_rgb(FloatImg *head, int x, int y, float r, float g, float b); int fimg_add_rgb(FloatImg *head, int x, int y, float r, float g, float b);
int fimg_interpolate(FloatImg *s1, FloatImg *s2, FloatImg *d, float coef);
/* 'operats' module */ /* 'operats' module */
int fimg_add(FloatImg *a, FloatImg *b, FloatImg *d); int fimg_add(FloatImg *a, FloatImg *b, FloatImg *d);
int fimg_sub(FloatImg *a, FloatImg *b, FloatImg *d); int fimg_sub(FloatImg *a, FloatImg *b, FloatImg *d);

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@ -4,9 +4,7 @@
COPT = -Wall -fpic -g -no-pie -DDEBUG_LEVEL=0 COPT = -Wall -fpic -g -no-pie -DDEBUG_LEVEL=0
OBJS = fimg-core.o fimg-pnm.o fimg-file.o fimg-math.o \ OBJS = fimg-core.o fimg-pnm.o fimg-file.o fimg-math.o \
fimg-timers.o operators.o fimg-2gray.o \ fimg-timers.o operators.o fimg-2gray.o
interpolate.o
DEPS = Makefile ../floatimg.h DEPS = Makefile ../floatimg.h
# modify it 'as you like' # modify it 'as you like'
@ -15,7 +13,7 @@ AR=ar
all: $(OBJS) ../libfloatimg.a all: $(OBJS) ../libfloatimg.a
t: t.c ../libfloatimg.a $(DEPS) t: t.c ../libfloatimg.a $(DEPS)
gcc $(COPT) $< ../libfloatimg.a -lpnglite -lm -o $@ gcc $(COPT) $< ../libfloatimg.a -lm -o $@
# -------------------------------------------- # --------------------------------------------
@ -31,9 +29,6 @@ fimg-2gray.o: fimg-2gray.c $(DEPS)
operators.o: operators.c $(DEPS) operators.o: operators.c $(DEPS)
gcc $(COPT) -c $< gcc $(COPT) -c $<
interpolate.o: interpolate.c $(DEPS)
gcc $(COPT) -c $<
fimg-pnm.o: fimg-pnm.c $(DEPS) fimg-pnm.o: fimg-pnm.c $(DEPS)
gcc $(COPT) -c $< gcc $(COPT) -c $<

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@ -1,44 +0,0 @@
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <math.h>
#include "../floatimg.h"
int verbosity;
/* ---------------------------------------------------------------- */
int fimg_interpolate(FloatImg *s1, FloatImg *s2, FloatImg *d, float coef)
{
int picsize, idx;
if (FIMG_TYPE_RGB != s1->type) {
fprintf(stderr, "%s : bad src 1 type %d on %p\n", __func__,
s1->type, s1);
return -8;
}
if (FIMG_TYPE_RGB != s2->type) {
fprintf(stderr, "%s : bad src 2 type %d on %p\n", __func__,
s2->type, s2);
return -8;
}
if (FIMG_TYPE_RGB != d->type) {
fprintf(stderr, "%s : bad dst type %d on %p\n", __func__,
d->type, d);
return -9;
}
picsize = d->width * d->height * 2;
for (idx=0; idx<picsize; idx++) {
d->R[idx] = (coef * s1->R[idx]) + ((1.0-coef) * s2->R[idx]);
}
return -1;
}
/* ---------------------------------------------------------------- */

46
lib/t.c
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@ -1,8 +1,3 @@
/*
* programme de test pour
* les fonctions de base.
*/
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <unistd.h> #include <unistd.h>
@ -67,48 +62,25 @@ fimg_destroy(&gray);
return 0; return 0;
} }
/* ---------------------------------------------------------------- */ /* ---------------------------------------------------------------- */
/**** #define W 2048
foo = fimg_create(&dessin, W, H, 3); #define H 2048
petit_dessin(&dessin);
foo = fimg_create(&noise, W, H, 3);
fimg_drand48(&noise, 0.1);
****/
/* ---------------------------------------------------------------- */
#define W 320
#define H 240
int main(int argc, char *argv[]) int main(int argc, char *argv[])
{ {
int foo, idx; int foo;
float coef;
FloatImg dessin, noise, result; FloatImg dessin, noise, result;
char outname[100];
verbosity = 1; verbosity = 1;
fimg_print_version(1); fimg_print_version(1);
foo = fimg_create_from_png("/home/tth/TMP/floatimg/s2.png", &dessin); foo = fimg_create(&dessin, W, H, 3);
foo = fimg_create_from_png("/home/tth/TMP/floatimg/s1.png", &noise); petit_dessin(&dessin);
foo = fimg_create(&noise, W, H, 3);
fimg_drand48(&noise, 0.1);
foo = fimg_create(&result, W, H, 3); foo = fimg_create(&result, W, H, 3);
foo = fimg_mul(&dessin, &noise, &result);
#define NBRE 42 essai_2gray(&result, "gray.pnm");
for (idx=0; idx<NBRE; idx++) {
coef = (float)idx / (float)NBRE;
coef = (0.5-0.5*cos( 3.141592654*coef));
foo = fimg_interpolate(&dessin, &noise, &result, coef);
printf("%6d %9.6f\n", idx, coef);
fimg_to_gray(&result);
sprintf(outname, "/home/tth/TMP/floatimg/%05d.pnm", idx);
foo = fimg_save_as_pnm(&result, outname, 0);
}
// essai_2gray(&result, "gray.pnm");
fimg_destroy(&dessin), fimg_destroy(&noise), fimg_destroy(&result); fimg_destroy(&dessin), fimg_destroy(&noise), fimg_destroy(&result);