[PD] Keystone correction

Cyrille Henry ch at chnry.net
Fri Apr 6 16:33:24 CEST 2012

you can use curve3d if you prefer moving vertices with pd message.
see attachment.
Iohannes solution using trapezoid is also a very good solution, if you only have to change keystone.


Le 05/04/2012 20:37, Charles Goyard a écrit :
> Hi,
> I don't understand how I can move the points of a mesh_square to make a
> trapezoid.
> Cyrille Henry wrote:
>> don't use a polygon, but a mesh_square or a curve3d.
>> Le 27/03/2012 11:21, Charles Goyard a écrit :
>>> Hi Cyrille,
>>> Cyrille Henry wrote:
>>>> you have to manually adjust the position of the 4 vertices defining
>>>> the corned of the primitive in order to spacially adjust them.
>>>> then, you have to adjust the position of the teture in this point
>>>> (it's an option that you don't really need).  here it is adjusted in a
>>>> neutral position.
>>> Now, I have something almost working. The only thing is that my texture
>>> gets folded along a diagonal when I move the polygon vertices. Drawing
>>> the polygon as line shows the right trapeze.
>>> Also I don't understand why I need to rotate my texture along the Z axis
>>> to get it right.
> _______________________________________________
> Pd-list at iem.at mailing list
> UNSUBSCRIBE and account-management ->  http://lists.puredata.info/listinfo/pd-list
-------------- next part --------------
A non-text attachment was scrubbed...
Name: testkeystone.pd
Type: application/puredata
Size: 2347 bytes
Desc: not available
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20120406/645531bc/attachment.bin>

More information about the Pd-list mailing list