Prusaslicer: Wrong perspective in the slicer preview

[ghost]

Version

1.41.2+

Operating system type + version

Mac OS and Windows

3D printer brand / version + firmware version (if known)

unneeded information

Behavior

The 3D view of the slicer is wrong in perspective.
It should be wider at the front than at the back.
Currently it is wider in the back than in the front.

Wrong

Right

[bubnikv]

What you see is a correct orthographic projection. The rear edge is as long
as the front one. It is only an optical illusion, that the rear edge seems
to be longer than the front one.

On Sun, Feb 10, 2019, 15:07 lunicorn-x64

Version

1.41.2+
Operating system type + version

Mac OS and Windows
3D printer brand / version + firmware version (if known)

unneeded information
Behavior

The 3D view of the slicer is wrong in perspective.
It should be wider at the front than at the back.
Currently it is wider in the back than in the front.
Wrong

[image: bildschirmfoto 2019-02-10 um 15 04 28]
https://user-images.githubusercontent.com/8118387/52534710-2f3c8700-2d45-11e9-815d-ab16d0935aa9.png
Right

[image: raum-perspektive-zeichnen]
https://camo.githubusercontent.com/4fcd60144aa5298c277c23f8cfe92f87f0bf0ccb/68747470733a2f2f7777772e6b75656e73746c65726265646172662d626c6f672e64652f62696c6465722f7261756d2d7065727370656b746976652d7a656963686e656e2e706e67

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[ghost]

Yes, but that's exactly the fault that it's the same length in the back and in the front, Because in a 3 dimensional environment you need a perspective.

[Sebastianv650]

You absolutely don't need a perspective as you have in mind. In fact, if you use 3D views for engineering (CAD and similar) you usually work in orthographioc view. In most cases you can switch between the two modes, but as "your" mode is disorting dimensions it's not good for use except renderings.
For exactly this reason, Slic3r should stick to the way it handles 3D views.

[ghost]

okay. So wo it be possible to add a perspective mode? so you could switch between?

[vojtechkral]

That's being tracked in #1155 . Technically yes, it would be possible to add perspective, but it's a bit of a low-priority issue for us - it seems it's just a matter of aesthetics. Or do you also want perspective out of practical/technical reasons?

In any case, I'm closing this issue in favor of the former one.