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From: karl AT aspodata DOT se
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] gschem attributes only for symbols pins and nets?
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Comments: In-reply-to Stefan Salewski <mail AT ssalewski DOT de>
   message dated "Wed, 05 Mar 2014 00:53:06 +0100."
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Date: Wed,  5 Mar 2014 12:55:58 +0100 (CET)
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Precedence: bulk

Stefan:
> http://ssalewski.de/tmp/prop.png

I like your millimeter paper like grid.
Your transistors, do C and E have their pins inside the circle ?

About the "sym" thing; nice tought a little confusing at first.

If you show x and y, perhaps you should make a cross or something for 
the symbols attachment point.

Orientaion, is that that the same as the symbols angle of rotation ?
Why do you have a checkmark for orientation, shouldn't 0 (= no rotation 
suffice) ?

The checkmarks for the attributes, is that for visibility ?

I liked your nine text "Origin" circles.

The "+ - <> 100 - + 300 - +" near the bottom, what's that for ?

> Basically I am satisfied, it is compact and not too ugly.

Hmm...

> Now I wonder if gschem supports attached attributes for all elements,
> even text elements, or only for symbols, pins and nets.

T 200 200 5 8 1 1 0
test=true
{
T 100 100 5 8 1 1 0
hello=3
}

seems to work all right, move the "test" and the "3" will move along.
docs/wiki/geda-file_format_spec.html says

 "Attributes are attached to the previous object."

and doesn't state any restrictions, but:

T 200 200 5 8 1 1 0
test=true
{
T 100 100 5 8 1 1 0
hello=3
{
T 300 300 5 8 1 1 0
deep=yes
}
}

didn't work.

...
> Indeed I can not really imagine what sense attributes for boxes or text
> elements can make -- but on the other hand when the attributes widget
> already exist, why not show it always.

What about (try it):

T 200 200 5 8 1 1 0
Value=2  = 8
{
T 280 280 5 5 1 1 0
power=3
}

> A related question: For boxes we have mesh and hatch, with angle and
> size parameters. Has someone ever used that for schematics? May cairo
> drawing routine supports that from the early days, but I wonder if I
> should offer all the related parameters for the user interface -- it may
> confuse beginners, and when no one use it...

Don't know.

Regards,
/Karl Hammar

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