AR camera Y-axis flipped?

[ffd8]

Nature of issue?

• Found a bug
• Existing feature enhancement
• New feature request

Which area does this problem relate to?

• VR
• AR(ARCORE)
• AR(MARKER)

Details about the bug:

• p5.js version: 1.11.1
• Device Name: - Immersive Web Emulator
• Web browser and version: Chrome 130.0.6723.117
• Operating System: MacOS 13
• Steps to reproduce this:

Loading the demo of a cube worked great, same as other forms, until loading text and then 2 things occured

1. the y-axis seems flipped (solved when adding scale(1, -1)
2. there is wild z-axis fighting on the letters..

Guessing z-axis issue has to do with it being rendered 2x for the lens? Perhaps only an issue for the emulator, since it's flattening the eyes? And maybe the issue with the flipped y-axis is also an emulator bug, not the library? Will try to test on an actual device asap.

Here's some visual examples of issue:

Flipped Y-axis with type:

Fixed with scale(1, -1):

Issue of Z-axis fighting when rotating the text:

[ffd8]

one more thing to add – it's also perhaps tricky for p5 beginners that the scaling is so different than what they're used to.. everything is mm versus p5 pixels relative values? Perhaps adding a function or option like scaleMode(P5) vs scaleMode(MM), could simplify that? It could both flip the yaxis as mentioned above and allow one to use more expected values, where I'd expect something like fontSize(150), translate(0, 0, -400), etc.

[stalgiag]

@ffd8 thanks for filing this issue!

I haven't looked at AR mode in a while, but can check it out sometime soon (if no one else gets to it sooner).

I really like the scaleMode() proposal!