From graphics-request at octave dot org Mon Feb 27 06:33:06 2006
Subject: Re: Object Graphics v0.2
From: "Shai Ayal" <shaiay at gmail dot com>
To: "Bill Denney" <denney at seas dot upenn dot edu>
Cc: graphics at octave dot org
Date: Mon, 27 Feb 2006 14:31:23 +0200

On 2/27/06, Bill Denney <denney at seas dot upenn dot edu> wrote:
> On Mon, 27 Feb 2006, Shai Ayal wrote:
>
> > In matlab you have the "userdata" property which is a matrix and the
> > "tag" property which is a string. both are left to the user to do with
> > as he pleases.
>
> Tag seems to be what I was thinking of.  Userdata seems to be for UI
> creation (please correct me if I'm wrong), and I'm thinking that at least
> for the first version of this standard UIs are outside the scope of the
> document.
>
> > Well, the RFC should define the minimal set of properties, and any
> > backend can add specific properties. This would of course break
> > compatibility, so I suggest that these specific properties be limited
> > to the root and/or figure objects. I.e. in octplot I have the
> > root.fontdir property so I can find the fonts. Since it's in the root,
> > and should only be set at startup, it doesn't really break
> > compatibility.
>
> OK, that sounds good.  We will just need to be sure that when we're done
> with this that when the coding is done there are general tests done by
> octave for the minimal required types and it also allows the backend to do
> tests for their optinal types.  One thing that I've been thinking about
> that is along these lines is if we're going to store color values in rgba,
> is it just up to the backend to strip the alpha channel and warn if it's
> ~= 1 if the backend doesn't support alpha?

sounds good

> Bill
>
> --
> "I am not one of those who believe that a great army is the means of
> maintaining peace, because if you build up a great profession those who
> form parts of it want to exercise their profession."
>    -- Woodrow Wilson
>
>