point3d: signed dist to plane

Author: Tagl

code/geometry/primitives3d.cpp

@@ -30,8 +30,7 @@ struct point3d {
     return ((*this - A) * (*this - B)).length() / A.distTo(B);}
   double signedDistTo(PL(A,B,C)) const {
     // A, B and C must not be collinear
-    point3d N = (B-A)*(C-A);
-    double D = A%N;
+    point3d N = (B-A)*(C-A); double D = A%N;
     return ((*this)%N - D)/N.length();}
   point3d normalize(double k = 1) const {
     // length() must not return 0