starting interpolate funcs

lib/t.c

@@ -1,3 +1,8 @@
+/*
+ *		programme de test pour
+ *		les fonctions de base.
+ */
+
 #include  <stdio.h>
 #include  <stdlib.h>
 #include  <unistd.h>
@@ -62,25 +67,48 @@ fimg_destroy(&gray);
 return 0;
 }
 /* ---------------------------------------------------------------- */
-#define W 2048
-#define H 2048
-int main(int argc, char *argv[])
-{
-int		foo;
-FloatImg 	dessin, noise, result;
-
-verbosity = 1;
-
-fimg_print_version(1);
-
+/****
 foo = fimg_create(&dessin, W, H, 3);
 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		foo, idx;
+float		coef;
+FloatImg 	dessin, noise, result;
+char		outname[100];
+
+verbosity = 1;
+
+fimg_print_version(1);
+
+foo = fimg_create_from_png("/home/tth/TMP/floatimg/s2.png", &dessin);
+foo = fimg_create_from_png("/home/tth/TMP/floatimg/s1.png", &noise);
+
 foo = fimg_create(&result, W, H, 3);
-foo = fimg_mul(&dessin, &noise, &result);
-essai_2gray(&result, "gray.pnm");
+
+#define  NBRE 42
+
+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);