yes I am looking at Roassal and definetly it gives a good insight into Athens.
Igor you are correct from what I see from the algorithms for finding if a point passes through a curve the work in kinda similar ground. I have to confess I have not looked into it yet, cause I am trying to solve some other problems but I will definitely need this. Right now I try to figure out how to implement my GUI , I want to support Spec so the gui elements ( lets say a button) is rendered by Athens but also called by Spec. Also I want to make something that will easy to port once Athens becomes the main render engine of Pharo and replaces Morphic rendering. But I am happy to say Hyperion is moving forward, a basic vector graphics editor is coming to Pharo ;) On Sun, Nov 24, 2013 at 11:19 AM, Stéphane Ducasse < stephane.duca...@inria.fr> wrote: > have a look at roassal because mathieu started to implement something and > he realized it was already in the image. > > On Nov 23, 2013, at 3:20 PM, kilon alios <kilon.al...@gmail.com> wrote: > > aaaaaahhh come on ... I am not THAT lazy :D > > of course I have searched it before asking. Unless I am blind I see loads > of bezier methods, none that detects whether a point belong to a curve. But > now you mention it I think I remember squeak was able to do add points to a > curve via click or something similar, because thats what I wan to do. So I > will take a look at it , most probably there is a method in there that does > this. > > I want the user to click on a curve or line and there a new control point > will be placed that will allow the user to shape the line or curve to a > finer detail. A standard feature for all vector editors , 3d editors, even > image editors. > > I am sorry if I miss something obvious here, its not laziness , its most > likely stupidity or just the fact I am very new with this. This is the > first time I try to make a vector editor.Again thank you all for trying to > help me, you have done already a lot. > > > On Sat, Nov 23, 2013 at 3:38 PM, Stéphane Ducasse < > stephane.duca...@inria.fr> wrote: > >> >> >> On Nov 23, 2013, at 11:24 AM, kilon alios <kilon.al...@gmail.com> wrote: >> >> would I sound too lazy to ask in which class ? >> >> >> On Sat, Nov 23, 2013 at 11:35 AM, Stéphane Ducasse < >> stephane.duca...@inria.fr> wrote: >> >>> there are bezier algo in the system >>> >>> Stef >>> >>> On Nov 20, 2013, at 9:55 PM, kilon alios <kilon.al...@gmail.com> wrote: >>> >>> yes I found the formula for straight lines and I was wondering what was >>> the one for bezier curves, so your reply could not have come a better >>> moment. Thanks I will study it and implement it. >>> >>> >>> On Wed, Nov 20, 2013 at 9:21 PM, Hilaire Fernandes < >>> hilaire.fernan...@gmail.com> wrote: >>> >>>> Hello, >>>> >>>> You may want to calculate the distance between the mouse position and >>>> your path (I guess a bezier curve). Then given this distance and a >>>> tolerance to zero you decide if the mouse position is more or less on >>>> your path. Calculating the distance you will also get for free the place >>>> where to add a point on your path. >>>> >>>> http://blog.gludion.com/2009/08/distance-to-quadratic-bezier-curve.html >>>> >>>> Hilaire >>>> >>>> >>>> Le 14/11/2013 21:07, kilon alios a écrit : >>>> > In order to do that I will have to check that the line passes through >>>> a >>>> > specific pixel. Or to be more correct that the place that mouse has >>>> > clicked is where my path passes through. How I do that ? Can Athens do >>>> > that ? Can athens tell me which pixels my path passes through ? >>>> > >>>> >>>> >>>> -- >>>> Dr. Geo http://drgeo.eu >>>> >>>> >>>> >>> >>> >> >> >> > >
