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eagle: always zoom to target area #732

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nick black 2020-06-23 04:00:06 -04:00
parent f99f64d3d7
commit 0c6f160493
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GPG Key ID: 5F43400C21CBFACC
1 changed files with 10 additions and 8 deletions
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18
src/demo/eagle.c
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@ -49,14 +49,16 @@ zoom_map(struct notcurses* nc, const char* map, int* ret){
}
//fprintf(stderr, "VHEIGHT: %d VWIDTH: %d scale: %d/%d\n", vheight, vwidth, yscale, xscale);
// we start at the lower left corner of the outzoomed map
int truex, truey; // dimensions of true display
notcurses_term_dim_yx(nc, &truey, &truex);
int delty = 2;
int deltx = 2;
int placey, placex; // dimensions of true display
notcurses_term_dim_yx(nc, &placey, &placex);
float delty = 3;
float deltx = 3;
float truey = placey;
float truex = placex;
if(truey > truex){
++delty;
}else if(truex > truey){
++deltx;
delty *= truey / truex;
}else{
deltx *= truex / truey;
}
// to zoom in on the map, we're going to scale the full image to a plane
// which grows on each iteration. it starts at the standard plane size,
@ -76,7 +78,7 @@ zoom_map(struct notcurses* nc, const char* map, int* ret){
ncplane_destroy(zncp);
return NULL;
}
while(vheight > truey && vwidth > truex){
while(vheight > truey || vwidth > truex){
*ret = -1;
ncplane_destroy(zncp);
if((zncp = ncplane_new(nc, truey, truex, 0, 0, NULL)) == NULL){