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-rw-r--r--src/Panorama.cxx5
1 files changed, 1 insertions, 4 deletions
diff --git a/src/Panorama.cxx b/src/Panorama.cxx
index e9e3e4d..e5d7c5f 100644
--- a/src/Panorama.cxx
+++ b/src/Panorama.cxx
@@ -438,10 +438,7 @@ Panorama::nick(Hill *m) {
b = m->height + get_earth_radius(m->phi);
c = view_height + get_earth_radius(view_phi);
- a = pow(((b * (b - (2.0 * c * cos(m->dist)))) + (c * c)), (1.0 / 2.0));
- beta = acos((-(b*b) + (a*a) + (c*c))/(2 * a * c));
-
- return beta - pi_d / 2.0;
+ return atan((cos(m->dist) * b - c) / (sin(m->dist) * b));
}
// return local distance to center of WGS84 ellipsoid