summaryrefslogtreecommitdiff
path: root/geometry/formulars.cpp
diff options
context:
space:
mode:
authormzuenni <michi.zuendorf@gmail.com>2023-02-04 16:56:22 +0100
committermzuenni <michi.zuendorf@gmail.com>2023-02-04 16:56:57 +0100
commit63b53894683dc5a9d89ecc4ab45bb25faafd770a (patch)
tree048481cee3e40e42457ef3de2347148f20a31c2c /geometry/formulars.cpp
parent35871798d6864f3130399ba845f43bb724d49595 (diff)
fix
Diffstat (limited to 'geometry/formulars.cpp')
-rw-r--r--geometry/formulars.cpp6
1 files changed, 3 insertions, 3 deletions
diff --git a/geometry/formulars.cpp b/geometry/formulars.cpp
index 855ef1e..37cc4f4 100644
--- a/geometry/formulars.cpp
+++ b/geometry/formulars.cpp
@@ -21,9 +21,9 @@ double norm(pt a) {return dot(a, a);}
double cross(pt a, pt b) {return imag(conj(a) * b);}
double cross(pt p, pt a, pt b) {return cross(a - p, b - p);}
-// -1 => gegen den Uhrzeigersinn
-// 0 => kolliniear
-// 1 => im Uhrzeigersinn.
+// 1 => c links von a->b
+// 0 => a, b und c kolliniear
+// -1 => c rechts von a->b
int orientation(pt a, pt b, pt c) {
double orien = cross(b - a, c - a);
return (orien > EPS) - (orien < -EPS);