tTh/FloatImg
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new pattern (mircol_1) in mkfimg

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tth 2021-05-12 12:04:55 +02:00
parent 4a52c16e40
commit 07dde749ed
3 changed files with 28 additions and 4 deletions
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3
floatimg.h
View File

@ -4,7 +4,7 @@
* http://la.buvette.org/photos/cumul
*/
#define FIMG_VERSION 145
#define FIMG_VERSION 147
/*
* in memory descriptor
@ -218,6 +218,7 @@ int fimg_save_as_bmp(FloatImg *src, char *outname, int flags);
int fimg_test_pattern(FloatImg *fimg, int type, double dval);
int fimg_draw_something(FloatImg *fimg);
int fimg_mircol_1(FloatImg *dst, float mval);
int fimg_multirandom(FloatImg *fimg, long nbpass);
/* file is 'funcs/utils.c' */

18
funcs/misc-plots.c
View File

@ -86,6 +86,24 @@ for (y=1; y<fimg->height; y++) {
return 0;
}
/* --------------------------------------------------------------------- */
int fimg_mircol_1(FloatImg *dst, float mval)
{
int x, y;
float fx, fy, rgb[3];
for (y=0; y<dst->height; y++) {
fy = (float)y / (float)dst->height;
for (x=0; x<dst->width; x++) {
fx = (float)x / (float)dst->width;
rgb[0] = mval * fx;
rgb[1] = mval * ((fx+fy)/2.0);
rgb[2] = mval * fy;
fimg_put_rgb(dst, x, y, rgb);
}
}
return -1;
}
/* --------------------------------------------------------------------- */
int fimg_multirandom(FloatImg *fimg, long nbpass)
{
int foo, x, y;

11
tools/mkfimg.c
View File

@ -20,6 +20,7 @@ int verbosity;
#define T_HDEG_A 4
#define T_VDEG_A 5
#define T_TPAT0 6
#define T_MIRCOL1 7
typedef struct {
int code;
@ -34,6 +35,7 @@ Type types[] = {
{ T_HDEG_A, "hdeg" },
{ T_VDEG_A, "vdeg" },
{ T_TPAT0, "tpat0" },
{ T_MIRCOL1, "mircol1" },
{ 0, NULL }
};
@ -58,7 +60,7 @@ return -1;
/* --------------------------------------------------------------------- */
static void help(int lj)
{
int foo;
int foo, cc;
puts("Usage:\tmkfimg [options] quux.fimg width height");
@ -122,13 +124,15 @@ switch (nbargs) {
height = atoi(argv[optind+2]);
break;
default:
fprintf(stderr, "%s need filename, width & height\n", argv[0]);
fprintf(stderr, "%s need filename, width & height\n",
argv[0]);
exit(1);
}
fname = argv[optind];
if (verbosity>1) fprintf(stderr, "*** mkfimg *** %s %s\n", __DATE__, __TIME__);
if (verbosity>1) fprintf(stderr, "*** mkfimg *** %s %s\n",
__DATE__, __TIME__);
if (verbosity) fprintf(stderr, "making '%s' %dx%d, type %d\n",
fname, width, height, type);
@ -149,6 +153,7 @@ switch(type) {
case T_HDEG_A: fimg_hdeg_a(&fimg, 1.0); break;
case T_VDEG_A: fimg_vdeg_a(&fimg, 1.0); break;
case T_TPAT0: fimg_test_pattern(&fimg, 0, fvalue); break;
case T_MIRCOL1: fimg_mircol_1(&fimg, fvalue); break;
case -1: exit(1);
}