A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Tony Oz
Date: 2018 Dec 26, 10:45 -0800
Here are a bit more clean approach and its' visualisation.
Too tricky! As it transpires - each object has its' "positive" and "negative" side, this influences the angle direction for that object, the order of intersections depends on this "siding" too...
Slowly-slowly I get the feel of the Geogebra 3-D tool. It is VERY powerfull indeed.