more expicit help

floatimg.h

@@ -2,7 +2,7 @@
  *	floatimg.h
  */
 
-#define		FIMG_VERSION	84
+#define		FIMG_VERSION	85
 
 /*
  *	in memory descriptor
@@ -91,6 +91,10 @@ int fimg_cos_010(FloatImg *s, FloatImg *d, double maxval);
 
 int fimg_mk_gray_from(FloatImg *src, FloatImg*dst, int k);
 
+/*	module funcs/rampes.c		*/
+int fimg_hdeg_a(FloatImg *img, double dcoef);
+int fimg_vdeg_a(FloatImg *img, double dcoef);
+
 /*	FIMG files module		*/
 int   fimg_fileinfos(char *fname, int *datas);
 int   fimg_dump_to_file(FloatImg *head, char *fname, int notused);

funcs/Makefile

@@ -1,9 +1,9 @@
 #---------------------------------------------------------------
 
-COPT = -Wall -fpic -g -no-pie -DDEBUG_LEVEL=0
+COPT = -Wall -fpic -g -no-pie -DDEBUG_LEVEL=1
 DEPS = ../floatimg.h Makefile
 OBJS = fimg-png.o fimg-tiff.o misc-plots.o filtrage.o utils.o	\
-	fimg-libpnm.o
+	fimg-libpnm.o rampes.o
 
 #---------------------------------------------------------------
 
@@ -30,5 +30,8 @@ misc-plots.o:		misc-plots.c $(DEPS)
 filtrage.o:		filtrage.c $(DEPS)
 	gcc $(COPT) -c $<
 
+rampes.o:		rampes.c $(DEPS)
+	gcc $(COPT) -c $<
+
 utils.o:		utils.c $(DEPS)
 	gcc $(COPT) -c $<

funcs/filtrage.c

@@ -13,7 +13,7 @@ int		x, y, offset;
 
 #if DEBUG_LEVEL
 fprintf(stderr, ">>> %s ( %p )\n", __func__, img);
-fprintf(stderr,"     type %s size %dx%d\n", img->type,
+fprintf(stderr,"     type %d size %dx%d\n", img->type,
 					img->width, img->height);
 #endif
 

funcs/rampes.c

@@ -0,0 +1,62 @@
+/*
+ *		FLOATIMG
+ *	rampes diverses, trucs etranges 
+ */
+
+#include  <stdio.h>
+
+#include  "../floatimg.h"
+
+/* --------------------------------------------------------------------- */
+int fimg_hdeg_a(FloatImg *img, double dcoef)
+{
+int		x, y;
+float		value;
+
+#if DEBUG_LEVEL
+fprintf(stderr, ">>> %s ( %p %f )\n", __func__, img, dcoef);
+#endif
+
+if (FIMG_TYPE_RGB != img->type) {
+	fprintf(stderr, "%s bad type\n", __func__);
+	return -6;
+	}
+
+for (x=0; x<img->width; x++)
+	{
+	value = (float)x / (float)img->width;
+	value *= dcoef;
+	for (y=0; y<img->height; y++) {
+		fimg_plot_rgb(img, x, y, value, value, value);
+		}
+	}
+
+return 0;
+}
+/* --------------------------------------------------------------------- */
+int fimg_vdeg_a(FloatImg *img, double dcoef)
+{
+int		x, y;
+float		value;
+
+#if DEBUG_LEVEL
+fprintf(stderr, ">>> %s ( %p %f )\n", __func__, img, dcoef);
+#endif
+
+if (FIMG_TYPE_RGB != img->type) {
+	fprintf(stderr, "%s bad type\n", __func__);
+	return -6;
+	}
+
+for (y=0; y<img->height; y++)
+	{
+	value = (float)y / (float)img->height;
+	value *= dcoef;
+	for (x=0; x<img->width; x++) {
+		fimg_plot_rgb(img, x, y, value, value, value);
+		}
+	}
+
+return 0;
+}
+/* --------------------------------------------------------------------- */

funcs/t.c

@@ -48,6 +48,26 @@ printf("%-10s %d\n\n", fname, foo);
 foo = format_from_extension(fname="foo.xyzzy");
 printf("%-10s %d\n\n", fname, foo);
 
+return 0;
+}
+/* --------------------------------------------------------------------- */
+int essai_rampes(void)
+{
+FloatImg	fimg;
+int		foo;
+
+fimg_create(&fimg, 640, 480, FIMG_TYPE_RGB);
+
+foo = fimg_hdeg_a(&fimg, (double)3.141592654);
+fprintf(stderr, "make h deg -> %d\n", foo);
+foo = fimg_save_as_pnm(&fimg, "hdeg.pnm", 0);
+fprintf(stderr, "%s: save as pnm -> %d\n", __func__, foo);
+
+foo = fimg_vdeg_a(&fimg, (double)3.141592654);
+fprintf(stderr, "make h deg -> %d\n", foo);
+foo = fimg_save_as_pnm(&fimg, "vdeg.pnm", 0);
+fprintf(stderr, "%s: save as pnm -> %d\n", __func__, foo);
+
 return 0;
 }
 /* --------------------------------------------------------------------- */
@@ -81,7 +101,7 @@ int		foo;
 
 puts("++++++++++++++++++++++++++++++++");
 
-foo = essai_ecrire_png("dessin.png");
+foo = essai_rampes();
 
 return 0;
 }

tools/fimgfx.c

@@ -55,7 +55,11 @@ static void help(int lvl)
 {
 Fx		*fx;
 
-puts("--- fimg special effects ---");
+puts("------ fimg special effects ------");
+puts("usage:");
+puts("\tfimgfix [options] <effect> source.fimg resultat.fimg");
+
+puts("effects:"); 
 printf("\t");
 for (fx=fx_list; fx->name; fx++) {
 	printf("%s ", fx->name);

tools/mkfimg.c

@@ -12,6 +12,9 @@ int		verbosity;
 #define		T_BLACK		1
 #define		T_DRAND48	2
 #define		T_GRAY		3
+#define		T_HDEG_A	4
+#define		T_VDEG_A	5
+
 typedef struct {
 	int		code;
 	char		*name;
@@ -21,7 +24,11 @@ Type types[] = {
 	{ T_BLACK,	"black"			},
 	{ T_DRAND48,	"drand48"		},
 	{ T_GRAY,	"gray"			},
-	{ T_GRAY,	"grey"			}
+	{ T_GRAY,	"grey"			},
+	{ T_HDEG_A,	"hdeg"			},
+	{ T_VDEG_A,	"vdeg"			},
+
+	{ 0,		NULL			}
 	};
 
 static int get_type(char *name)
@@ -35,7 +42,6 @@ fprintf(stderr, ">>> %s ( '%s' )\n", __func__, name);
 // #define TEST(str)	( ! strcmp(name, str) )
 
 for (type = types; type->code; type++) {
-	// printf("\t%-15s %d\n", type->name, type->code);
 	if (!strcmp(name, type->name)) {
 		return type->code;
 		}
@@ -46,13 +52,16 @@ return -1;
 /* --------------------------------------------------------------------- */
 static void help(int lj)
 {
+int		foo;
 
 puts("Usage:\tmkfimg [options]  quux.fimg width height");
 
 puts("\t-k N.N\tgive a float parameter");
-puts("\t-t bla\t\thowto make the pic");
+fputs("\t-t bla\thowto make the pic\n\t\t", stdout);
-puts("\t\t\tblack, drand48...");
+for (foo=0; types[foo].code; foo++) {
-puts("\t-v\tincrease verbosity");
+	printf("%s ", types[foo].name);
+	}
+puts("\n\t-v\tincrease verbosity");
 
 if (verbosity) fimg_print_version(1);
 
@@ -114,6 +123,8 @@ switch(type) {
 	case T_DRAND48:		fimg_drand48(&fimg, fvalue);	break;
 	case T_GRAY:		fimg_rgb_constant(&fimg, fvalue, fvalue, fvalue);
 				break;
+	case T_HDEG_A:		fimg_hdeg_a(&fimg, 1.0);	break;
+	case T_VDEG_A:		fimg_vdeg_a(&fimg, 1.0);	break;
 	}
 
 foo = fimg_dump_to_file(&fimg, fname, 0);