nanogui: How to create rounded rectangle and dotted lines ?
Subject:
Re: How to create rounded rectangle and dotted lines ?
From:
"Robert E. Hartley" ####@####.####
Date:
16 May 2001 17:35:40 -0000
Message-Id: <3B02B9B1.134F4083@ics.com>
Someone on this list asked me the same thing earlier today.
I told them the following:
To get the rounded apearance at the corners, I calculated the what I would
need to draw a quarter circle at each of the four corners, and then drew a
filled arc. For the rest I broke it up into three different rectangles
for the top, middle, and bottom as follows:
(best viewed in fixed font)
AA1111111AA
AA1111111AA
22222222222
22222222222
222222222222
222222222222
AA3333333AA
AA3333333AA
I was then able to code a function that took the x, y, w, h, and radius needed
to draw rounded rectangles.
This was done for a KVM port to the now defunct Helio from VTech.
I hope this helps,
Rob
Jordan Crouse wrote:
> Ahh, to dream...... :)
>
> There currently are no native routines to create rounded rectangles or dotted
> lines.
>
> For the dotted lines, I am not sure exactly why we haven't implemented this
> before, I would think that we could produce a series of values in the
> graphics context, and provide those to the user. I'm not a hundred percent
> sure how X11 does it, but I think we could do a reasonable facsimile.
>
> As far as the rounded rectangles, I know that the math involved in drawing
> and clipping rounded rectangles is pretty hairy, and I don't think anyone has
> made an effort in that direction.
>
> Jordan
>
> On Wednesday 16 May 2001 00:56, Patrice Mancini mentioned:
> > Hello,
> >
> > I'm trying to find if there is a way to create rounded rectangles and
> > dotted lines using nano-X
> >
> > Thanks in advance for your help.
> >
> > Regards
> >
> > Patrice Mancini
> >
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