Re: Drawing in a user defined coordinate system

Hi again,

Sorry for the noise...

Re-reading the Generalized points section of the CAPI/GP manual, I understood that the 6 elements of the transformation matrix were indeed the arguments for the :transform property of a graphic-state.

http://www.lispworks.com/documentation/lw60/CAPUG-M/html/capiuser-m-166.htm#pgfId-886173

I was a bit unclear, but looking at the definition of gp:make-transform confirms that.

Cam

On 15 Mar 2014, at 11:07, Camille Troillard <camille@osculator.net> wrote:

> 
> Hey there,
> 
> I have a CAPI output-pane in which I would like to draw individual items at different locations.
> Each item has its own coordinate system, and a frame location in the pane’s coordinate system.
> 
> I am searching for way to temporarily apply a coordinate system transformation.
> 
> I have found gp:set-graphics-port-coordinates, alas it sets the coordinates of the entire port and is destructive.
> I also found graphics-state transformations but haven’t got to understand how to use it the way I would like.
> 
> Or perhaps should I use pinboard objects?
> 
> Thank you so much in advance!
> 
> Cam


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