#LineSegments

LineSegments is a struct and set of functions for computation of useful geometerical properties of line segments.

struct LineSegment

####midpoint() Compute the midpoint of the line segment

####angle() Compute the angle of the line segment against the x-axis

####length() Compute the length/distance between p1 and p2

####interpolatePointAtT(t: CGFloat) Compute a point on the line segment at time t where 0.0 <= t <= 1.0

####bounds() Compute the bounding rectangle of the line segment as a CGRect

####pointsOnLineAtDistance(distance: CGFloat)

Compute an array of evenly spaced CGPoints on the line segment with distance units between each point

####translate(dX: CGFloat, dY: CGFloat) Compute a LineSegment that is translated by dX, dY

####translateInPlace(dX: CGFloat, dY: CGFloat) Translate self by mutating p1 and p2

####rotate(radians: CGFloat, aboutPoint: CGPoint) Compute a LineSegment that is rotated by radians around the point aboutPoint

####rotateInPlace(radians: CGFloat, aboutPoint: CGPoint) Rotate self by radians around the point aboutPoint

####intersectionPointWithLineSegment(segment: LineSegment) Calculates the intersection CGPoint? of self and segment, or returns nil if the segments do not intersect