It sounds to me like your trying to find the x,y coordinates along a line. If this is the case then:
M = (starty-endy)/(startx-endx) and B = -startx + starty Then Y = m*x + b where x is the current x location of the train and y will be the y-coordinate of the train. I hope this helps. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of allandt bik-elliott (thefieldcomic.com) Sent: Wednesday, August 27, 2008 12:00 PM To: Flash Coders List Subject: [Flashcoders] pythagoras question hi guys I'm doing something wrong in my pythagoras theorum but i'm not seeing what it is right now i'm trying to find out the coordinates for a point on a line. I know the start x, end x, start y, end y, c length for the line and i know how far along c the point should be (call it vector length) but i'm a little stumped as to where to go from there the psuedo code for what i've been trying is vector x = start x / end x vector y = start y / end y train x = (vector x * vector length) + start x train y = (vector x * vector length) + start y I think i have my maths very wrong here - hope you guys can help a _______________________________________________ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders _______________________________________________ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders