Re: [Xcircuit-dev] minor nits

[R. T. E. <tim...@mu...>]

Dear Don,

> ... now that you describe the action of the push button in 3.4, I see 
> how it works.  Although if you select an object first, then click on the 
> push button--nothing happens.  Perhaps a message in the bottom bar would 
> help.

That one *is* an error---if something is selected, the buttons such as
"delete", "copy", "push", etc., should act immediately on that object,
rather than changing the button-1 binding modes.  I'll fix that when I
get a chance.

> I'm suspecting you're using integer values (with an implied binary 
> point)  for speed (something I'd do too).  I probably would have set the 
> 64 internal units to equal 1/4 inch, just to make everything a power of 
> 2.  That would then seem obvious to me, but still not to the typical 
> user.

Yes, it's integer internal units multiplied by a floating-point value
to get absolute output coordinates.

The unusual choice of 1/6 inch has to do with trying to keep *both*
inch and centimeter units on a rational grid.  So xcircuit can swap
between a grid at 1/6 inch or 0.4 cm.  This assumes 2.5cm = 1in, so
there's a "fudge factor" of 2.54 / 2.5 between reported centimeter
values and actual output (printed) dimensions.  How sensible that all
is, is debatable, but at any rate, it's the way I've done it.

					Regards,
					Tim

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