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plots: implement basic redraw_plot() #136

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nick black 2020-04-03 05:47:14 -04:00 committed by Nick Black
parent f1f94deda8
commit 8a23124c4a
1 changed files with 19 additions and 4 deletions
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23
src/lib/plot.c
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@ -110,6 +110,23 @@ update_sample(ncplot* n, uint64_t x, int64_t y, bool reset){
}
}
static int
redraw_plot(ncplot* n){
ncplane_erase(ncplot_plane(n)); // FIXME shouldn't need this
for(int y = 0 ; y < 1 ; ++y){ // FIXME use available columns
int idx = n->slotstart;
for(uint64_t x = 0 ; x < n->slotcount ; ++x){
if(n->slots[idx] > n->miny){ // FIXME prorate
if(ncplane_putegc_yx(ncplot_plane(n), y, x, "█", NULL) <= 0){
return -1;
}
}
idx = (idx + 1) % n->slotcount;
}
}
return 0;
}
// Add to or set the value corresponding to this x. If x is beyond the current
// x window, the x window is advanced to include x, and values passing beyond
// the window are lost. The first call will place the initial window. The plot
@ -122,8 +139,7 @@ int ncplot_add_sample(ncplot* n, uint64_t x, int64_t y){
return -1;
}
update_sample(n, x, y, false);
// FIXME redraw plot
return 0;
return redraw_plot(n);
}
int ncplot_set_sample(ncplot* n, uint64_t x, int64_t y){
@ -134,8 +150,7 @@ int ncplot_set_sample(ncplot* n, uint64_t x, int64_t y){
return -1;
}
update_sample(n, x, y, true);
// FIXME redraw plot
return 0;
return redraw_plot(n);
}
void ncplot_destroy(ncplot* n){