[vtkusers] How to preserve objects size when moving camera

[Pato Sandana]

Hi Andrey,

What I would do in your case, is to have two renderers and two cameras. One renderer with a fixed camera with all your circles and polygons you want to preserve in your screen and another to deal with the 3D world objects. You can attach more than one renderer to the Render Window.

Cheers,
Pato

Message: 1
Date: Fri, 14 Dec 2018 20:07:33 +0300
From: Andrey Ivanov <andrei.ivanov at phystech.edu>
To: David E DeMarle <dave.demarle at kitware.com>
Cc: vtkusers at public.kitware.com
Subject: Re: [vtkusers] How to preserve objects size when moving
	camera
Message-ID:
	<CALsLM6fQS52h2UYXzqO0L4RDFdezY3EELTCJfOXZ_cze_7VtUQ at mail.gmail.com>
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I forgot to mention that I am already working with orthogonal projection.
The problem is not with preserving shapes and avoiding perspective deformations. I would like to fix screen size of objects, so when I increase height and width of camera frustum they will occupy the same number of pixels.

Best regards,
Andrey Ivanov