do.lines.cross: Given two line segments, returns TRUE if they cross, FALSE if...

In bmarkslash7/bagoftricks: bagoftricks

Description

from algorithm described at: http://stackoverflow.com/questions/7069420/check-if-two-line-segments-are-colliding-only-check-if-they-are-intersecting-n

Usage

do.lines.cross(start.line.one, end.line.one, start.line.two, end.line.two)

Arguments

start.line.one	list of coordinates c(x,y) for first point on first line
end.line.one	list of coordinates c(x,y) for second point on first line
start.line.two	list of coordinates c(x,y) for first point on second line
end.line.two	list of coordinates c(x,y) for second point on second line

Value

TRUE if lines cross, FALSE if lines do not

Examples

do.lines.cross(start.line.one = c(0,0), end.line.one = c(1,1),
		start.line.two = c(1,0), end.line.two = c(0,1))

bmarkslash7/bagoftricks documentation built on May 12, 2019, 10:24 p.m.