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Code Issues Releases Wiki Activity

drawing tool:: improved the performance of mouse_snap

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This commit is contained in:
Zeno Rogue 2024-07-27 18:11:41 +02:00
parent 31e911ba15
commit 5fe4007fd5
1 changed files with 9 additions and 5 deletions
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14
mapeditor.cpp
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@ -2218,14 +2218,12 @@ EX namespace mapeditor {
EX shiftpoint mouse_snap() {
ld xdist = HUGE_VAL;
shiftpoint resh;
shiftpoint resh = mouseh;
auto snap_to = [&] (shiftpoint h) {
ld dist = hdist(h, mouseh);
if(dist < xdist) xdist = dist, resh = h;
};
for(auto& p: gmatrix) {
cell *c = p.first;
auto& T = p.second;
auto snap_to_tile_matrix = [&] (cell *c, const shiftmatrix& T) {
snap_to(T * C0);
for(int i=0; i<c->type; i++) {
hyperpoint h1 = get_corner_position(c, i);
@ -2233,7 +2231,13 @@ EX namespace mapeditor {
snap_to(T * h1);
snap_to(T * mid(h1, h2));
}
}
};
auto snap_to_tile = [&] (cell *c) {
auto p = at_or_null(gmatrix, c);
if(!p) return;
snap_to_tile_matrix(c, *p);
};
snap_to_tile(mouseover);
return resh;
}