diff options
Diffstat (limited to 'geom.hpp')
-rw-r--r-- | geom.hpp | 6 |
1 files changed, 5 insertions, 1 deletions
@@ -27,7 +27,7 @@ struct vec { double angle() const { if (is_nil()) return 0; double xx = x / norm(); - double a = acos(x); + double a = acos(xx); return (y >= 0 ? a : -a + 2*M_PI); } @@ -144,6 +144,10 @@ struct circle { vec at_angle(double theta) const { return c + vec(r * cos(theta), r * sin(theta)); } + + bool intersects(vec p) const { + return (c - p).norm() <= r; + } }; struct circarc { |