Shape:testSegment
Function
Synopsis
t, xn, yn = Shape:testSegment( x1, y1, x2, y2 )
Arguments
number x1- The x-component of the first endpoint.
number y1- The y-component of the first endpoint.
number x2- The x-component of the second endpoint.
number y2- The y-component of the second endpoint.
Returns
number t- The time of impact, or nil if no impact.
number xn- The x-component of the surface normal.
number yn- The y-component of the surface normal.
