Checking for intersection of two line segements about geodesy HOT 3 CLOSED

withinExtent() function now added to latlon-vectors.js.

from geodesy.

The trig library version of LatLon.intersection() doesn't specify the extent of the line segments; a start point and a bearing defines a great circle, but not where the segment ends.

The version of LatLon.intersection() in the vector-based library allows for segments to be defined by start point & end point. You could combine this with an extent check on the intersection point similar to that found in LatLon.nearestPointOnSegment().

Hopefully that will get you in the right direction, but if I can find some time, I'll look at adding a general 'withinExtent()'-type function to the vector-based library, which should give you what you need.

from geodesy.

@chrisveness thanks for your reply, that's really helpful. I will perhaps take a dig this weekend if I can find time. If I'm successful I'll make sure to make a pull request. I think that function would be really useful :)

from geodesy.