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nconf: genellipse

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This commit is contained in:
Zeno Rogue 2020-03-16 21:07:07 +01:00
parent 7a5178e8a6
commit c8f47407fd
1 changed files with 19 additions and 0 deletions
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19
rogueviz/newconf.cpp
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@ -44,6 +44,23 @@ vector<string> gensquare(int X, int Y) {
return res;
}
vector<string> genellipse(int D, ld alpha) {
vector<string> res(D+4, string (D+4, '0'));
ld R = (D-1.) / 2;
for(int y=0; y<D; y++)
for(int x=0; x<D; x++) {
ld ax = (x-R);
ld ay = (y-R);
ld bx = ax * cos(alpha) - ay * sin(alpha);
ld by = ay * cos(alpha) + ax * sin(alpha);
bx /= R;
by /= R;
res[y+2][x+2] = bx*bx+by*by*2 < 1 ? '1' : '0';
}
add_border(res, 2+R);
return res;
}
vector<string> gent(int X, int Y) {
vector<string> res(Y+X+4, string (Y+X+X+4, '0'));
for(int y=0; y<Y; y++)
@ -394,6 +411,8 @@ void conf_shapes() {
dialog::add_action([] { fmap = gent(19, 7); reset_vxy(); popScreen(); });
dialog::addItem("snake", 'd');
dialog::add_action([] { fmap = snake; reset_vxy(); popScreen(); });
dialog::addItem("ellipse 50", 'e');
dialog::add_action([] { fmap = genellipse(50, hrand(180)); reset_vxy(); popScreen(); });
dialog::addBreak(100);
dialog::addBack();
dialog::display();