IntersectPoint: Find where point opposite segment intersects segment.

In stmueller/pathmapping: Compute Deviation and Correspondence Between Spatial Paths

Find where point opposite segment intersects segment.

Description

Find where point opposite segment intersects segment. It gives a proportion of AB that the orthogonal line passing through C meets. If outside (0,1) it does not pass through AB

Usage

IntersectPoint(A, B, C)

Arguments

A	(x,y) point on one end of line segment
B	(x,y) point on other end of line segment
C	(x,y) point to compare to line segment

Value

returns a value which is the proportion of the length of AB where AC proects onto the line defined by AB. If the return value is between 0 and 1, the point is opposite the line segment. If negative, it falls on the A side of AB; if greater than 1, it falls to the B side of AB.

Author(s)

Shane T. Mueller and Brandon Perelman

References

See Mueller et al., (2016). https://sites.google.com/a/mtu.edu/mapping/

See Also

LineMagnitude,ClosestPoint,DistancePointSegment

stmueller/pathmapping documentation built on Nov. 13, 2023, 12:39 p.m.