Sticker with other than rectangular shape

[Jaco van der Molen]

How would one create a sticker (using texture mapping) with another than a rectangular shape?
Like for example the stickers that come with set 42061

The problem with the non-rectangular shape is relatively simple... it is much mode tricky if the sticker is not flat! You have indeed to first create the 3D shape of the sticker and make the image projection on it. Problem is that the non flat projection may introduce distortions in the image - or rather, the image must be a pre-distorted flat projection of the shaped sticker. In your case even the panel is flat enough, so distortion is not a real issue.

For an example, see my EV3 stickers! http://www.ldraw.org/cgi-bin/ptscan.cgi?...mindstorms

OK, I see.
Very impressive work Philo!
Is there a sticker there that is applicable for panel part 87080 that is used in the telehandler?

Edit: studying the files from Philo on the PT tells me there is no panel 87080 in the EV3 set ;-(
However, I see now how it is done with the sickers.
I do not have the skills to make the LDraw geometry surface and subfiles for the panel I need, but perhaps Philo can make that? :-)

I do have the skills and tools to create the image for the sticker though.

Can we make something more general for these kind of parts?
I mean standard "blank" LDraw surfaces for stickers that are used.
I think there are more technic sets for example that have stickers applied to panels.