Digital Workshop

Currently frames have the wonderful ability to pass their attributes to any children contained in the frame (skews, etc).

I would like to have a super-frame object that has edit point characteristics, so I can create a perspective. Essentially making a trapezoid that shrinks the shapes to mimick a 3D perspective.

Any objects, maybe excepting Video, which are children of the Frame would inherit that morph. Sure, I'd like video to be transformed as well -- but I assume that is a much more difficult programming effort at this level of engagement with the windows system. (in a previous laptop, I had an nVidia chip that provided the 'keystone' adjustment, mostly intended for correcting aspect of presention slides on the projection screen. I expect that was easier to implement at the graphics card level than at the application level.)

Have you looked at the roll and spin animation actions? Sounds like that's exactly what you want.

Thanks for that memory-jog Dave. I had used Roll, Spin, etc... but mostly more dynamically and in-motion.

So I now tried implementing it more in a static fashion. Take a Frame object and Roll it back to a fixed angle, and likewise Spin the Frame also to a fixed angle so the right edge appears further away. Also in my little test of this, I applied a 140% Horizontal Stretch to the Frame.

So I have attached a screenshot of Opus Preview page.
The photo shows a painted fence that clearly illustrates the near/far perspective.
Then I tried to match or mimmick that perspective for a rectangle vector object (orange colour). I used a Frame of course so that all of the transforms get inherited by the objects inside the Frame.
The test --- how does the Vector object look compared to the perspective fence?

Conclusion: the main problem here is that it is very much trial and error --- going into Preview and assert the animation to static position. If it does not look right, return to the editor... tweak the animation settings, and Preview/try again. To get better perspective than this, I would need a few more passes at it, and may have to add some vertical Skew.

Real-world application.
If I want to make a simple Scrolling photo display, say in landscape orientation, and have the center image show normally but have left and right side images recede in perspective. For example, a watchband can be seen this way with some perspective. Right now, I guess I would simply mimmick a Photo Marquee or Panning by decreasing size of adjacent frames.

Another use/application I tried in the past, but failed.
Bear in mind, I want to design and set these next scenes up in the Opus Editor, as part of the Page layout. It is a poor workaround to have to labour at it in the runtime Pub.
I wanted to create a wall of pics where the display panels create some visual perspective. Or a circle of display panels. Attached_2 shows such mock-ups.
Neither the ring-of-pics nor the video-wall achieved a real perspective view. (I used skew and rotate mainly)

So, at this point the idea for a Keystone Frame is just an idea.