to check if a point is in a region or outside :
- take a point that is outside your region (a very far one for exemple) , let's call it pointA - check if the line from your point to pointA cross each line of your region. if the number a line crossed is odd, your point is out of the region, if it's even , your point is in the region. On 3/24/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > I have a big (for me) problem, > > i have a grpah made of a series of point (of one pixel). > I need taht the user can draw a series of line on this graph to make a > shape or region. > This is the first problem: how to permit to the user to draw... > > The second is this one : > > there is a way to check if a point is inside the refion or outside? > > > Thanks,Riccardo > _______________________________________________ > [email protected] > To change your subscription options or search the archive: > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > > Brought to you by Fig Leaf Software > Premier Authorized Adobe Consulting and Training > http://www.figleaf.com > http://training.figleaf.com > _______________________________________________ [email protected] To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
