Re: Vector plots + "zoomier"

["David Meeker" <dmeeker@xxxxxxxx>]

--- In femm@xxxxxxxxxxxxxxx, "Aakash Jariwala" <sthu111@xxxx> wrote:
> The vector plots are a nice addition. Has anyone run into the 
> problem of zooming into a point that is connecting two lines at a 
90 
> degree angle and one of the lines disappears(it takes the same line 
> every time and seems only to affect lines that are nearly 
> perpendicular to each other)? Is that due to a tolerance setting of 
> the drawing or setting in the program? Thanks.
> 
> - Aakash Jariwala

Arrgh. This is how this issue that I had described with the built-in 
GDI only dealing with values of less than 16 bits manifests itself--
by messing up the way that lines are drawn. I changed things so that 
internally, all lines get cropped to a circle that is 32767 in 
diameter--apparently, this doesn't get rid of the problem in all 
cases. I'll do some more head-scratching to try to get rid of this--
it would probably be sufficient to crop things to the smallest circle 
that contains the screen.

I'll also look into the "duplicated points" thing--I hadn't run 
across this before.

Dave.
--
David Meeker
http://femm.berlios.de/dmeeker