hello,
with the "perspec" and "view" message to gemwin, you can adjust everything in
order to have the gem coordinate to be exactly what you want. i.e. to coincide with pixel value.
c
jim a écrit :
Thanks a lot for all your help in sorting out using gemmouse with
pix_data. It's making a lot more sense to me now. It would be nice if
translateXYZ had a feature like gemmouse where one could set the scale
relative to the gem window. Same goes for the geometric primitive sizes
like square. It would be nice to be able to specify those in pixels.
Thanks again.
Jim
On Fri, 2010-04-09 at 14:47 +0200, Jack wrote:
Le vendredi 09 avril 2010 à 11:52 +0100, Andrew Faraday a écrit :
Date: Fri, 9 Apr 2010 11:03:28 +0200
From: zmoel...@iem.at
To: jbtur...@hotmail.com
CC: cinet...@passport.ca; pd-list@iem.at
Subject: Re: [PD] gemmouse and pix_data
Andrew Faraday wrote:
Quick and simple solution to a lot of similar problems, use
[range].
It needs four arguments, the input range (in this case 0 to the
size of your gemwin) as two arguments, and the output range (usually
-4 to 4) and it will convert one into the other. Although to make this
work on gem you need one for each of the x and y axes.
You can do this by re-scaling yourself, although this does take
more time and effort, but also can provide more control. In the end
it's your own choice.
[gemmouse] will output coordinates in pixels by default.
however, you can specify the range manually, [gemmouse 1 1] will
output
x=0..1 and y=0..1
fgmsadr
IOhannes
I'm not entirely sure, but this would probably still be centred on the
top left corner of the gem window, so would still require some
arithmetic to sync up objects to mouse position.
No, if you read the help about [pix-data], you only need the range
between 0 and 1 :
The coordinates within the image (x-pos, y-pos) range from (0.0f, 0.0f)
(left-bottom) to (1.0f, 1.0f) (right-top).
So [gemmouse 1 1] is enough (on Linux you have to invert the values on Y
axe).
Your example is good for a square GEM window and return the position in
its space (not in the pix 'space' of a picture). (I'm not sure to be
clear here ?)
Have a look at the attached patch.
++
Jack
Something like
[gemmouse 8 8]
| |
[- 4] [- 4]
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