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keller demo #736

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nick black 2020-10-28 05:38:57 -04:00 committed by Nick Black
parent 4203c2402f
commit 4effee947a
1 changed files with 47 additions and 2 deletions
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49
src/demo/keller.c
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@ -1,6 +1,51 @@
#include "demo.h"
int keller_demo(struct notcurses* nc){
// FIXME
// show it with each blitter, with a legend
static int
visualize(struct notcurses* nc, struct ncvisual* ncv){
for(ncblitter_e b = NCBLIT_DEFAULT + 1 ; b < NCBLIT_SIXEL ; ++b){
struct timespec ts = { .tv_sec = 1, .tv_nsec = 0, };
struct ncvisual_options vopts = {
.scaling = NCSCALE_STRETCH,
.blitter = b,
};
struct ncplane* n = ncvisual_render(nc, ncv, &vopts);
if(n == NULL){
return -1;
}
const char* name = notcurses_str_blitter(b);
ncplane_set_bg_rgb(n, 0);
int scalex, scaley, truey, truex;
ncvisual_geom(nc, ncv, &vopts, &truey, &truex, &scaley, &scalex);
ncplane_printf_aligned(n, ncplane_dim_y(n) / 2 - 1, NCALIGN_CENTER,
"%dx%d", truex, truey);
ncplane_putstr_aligned(n, ncplane_dim_y(n) / 2, NCALIGN_CENTER, name);
ncplane_printf_aligned(n, ncplane_dim_y(n) / 2 + 1, NCALIGN_CENTER,
"%d:%d pixels -> cell", scalex, scaley);
int ret = demo_render(nc);
demo_nanosleep(nc, &ts);
ncplane_destroy(n);
if(ret){
return ret;
}
}
return 0;
}
int keller_demo(struct notcurses* nc){
if(!notcurses_canopen_images(nc)){
return 0;
}
char* file = find_data("covid19.jpg");
if(file == NULL){
return -1;
}
struct ncvisual* ncv = ncvisual_from_file(file);
free(file);
if(ncv == NULL){
return -1;
}
int r = visualize(nc, ncv);
ncvisual_destroy(ncv);
return r;
}