I think this add-on might be what you need: TROIKATRONIX : ISADORA - DX – Rotate Canvas

It uses Matte to create a new canvas at the required 'rotated' dimensions, and then drops the image into this new canvas. 

@bonemap

Could you DM me the User Actor and/or patch so I can take a look?

@woland

Sure, here we go:

Liveaudio 2 OSC:
https://alexxaudio.gumroad.com...

Audio-Automation 2 OSC:
https://alexxaudio.gumroad.com...

Hi,

I have built, using Isadora, a touch screen interface for a Samsung touch screen overlay that has a USB connection. The overlay is in front of a 75” Samsung display. I have the display set in a vertical orientation. The final resolution is 1080 x 1920. Isadora runs on a Mac mini that sits behind the wall mounted display.

Everything is working well with a user actor module that can be duplicated to reposition active ‘hot-spots’ anywhere in the interface.

There is a single issue that would be great to find a solution. The touch screen is basically a mouse input connected to the computer via USB. It works accurately except for a users first touch of the overlay. This send the mouse sprite to the screen coordinate 0,0. The position of the sprite recovers but it causes some confusion for first time users.

Isadora is a great tool for this interactive touchscreen display and I have some approaches from other museums for touch screen development services that will include on-selling software licenses. But I will have to find a correction for this one issue.

Best wishes

Russell 

@mark_m

I have made some test and a patch to test it. The best solution, with the least loss of definition, is:

Video input > FFGLPanSpinZoom  >  projector

scaling-test.izz

So it means, the best way ist to change the zoom factor in the FFGLPanSpinZoom actor.

Best regards

Jean-François

@mark_m said:

But I am ignorant of the way that scaling works in Isadora. If you scale, then rescale, then rescale again, is the image going to deteriorate with each rescaling - like photocopying a photocopy, or is Isadora smarter than that?

 Sorry, I also don't know how Isadora deals with scaling. I think you will get an answer from someone on the team.

Best regards

Jean-François

@jfg said:

different scaling for each scene?

 Yes, Jean-François, this is what I want to be able to do. 

I'll use this camera's feed in a number of different ways throughout the performance, and at different scalings, sometimes even within the same scene.

For example, there will be one scene which lasts about 5 minutes, where we see the live image projected in the centre of the screen at about 66% original size, but there will also be a thumbnail image of the feed captured every 20 seconds, which will gradually fill up across the the top of the screen so that after five minutes we can see see 15 images that show how what's in front of the camera has changed since the start of the scene. These will be at maybe 10% of the original size.  

But I am ignorant of the way that scaling works in Isadora. If you scale, then rescale, then rescale again, is the image going to deteriorate with each rescaling - like photocopying a photocopy, or is Isadora smarter than that?

Thank you for your time looking at this for me. 

@dbini and also you for your time, John!

@mark_m

I don't understand, why you want to scale a second time or it is because you want use a different scaling for each scene?

scaling.izz

@jfg

Thank you. So I think the problem with this approach is that my input gets scaled down to 55%, so the 1920px full resolution height that I'm looking for gets scaled down, becoming effectively 1080px, and if I scale the output again for output I have a double scaling issue going on, which I think can't be good for the resolution of the final output image. BUT I will test, thank you.

@dbini

Thank you, this seems to work well, and gives me the full 1920px height which I can scale as I like, but the scaling, I think, only happens once...