Manta Interactive Ray Tracer Development Mailing List

Text archives Help


Re: [MANTA] hfov, vfov, and non-square images


Chronological Thread 
  • From: Dirk Reiners <dirk@infiscape.com>
  • Cc: Christian Odom <cnsodom@gmail.com>, manta@sci.utah.edu
  • Subject: Re: [MANTA] hfov, vfov, and non-square images
  • Date: Tue, 03 Jul 2007 17:07:30 -0500

        Hi James,

James Bigler wrote:
This is done by the camera. Each camera is different, but the camera used most often is the PinholeCamera (Model/Cameras/PinholeCamera.cc).

In the setup call the vertical fov is set to the horizontal fov. Try fiddling around with that and see what you get.

We actually have our own camera based on raw OpenGL matrices, so we're pretty sure it's not in the camera. We also looked into the Fisheye camera and couldn't see anything that would do it.

The effect is that the horizontal fov is constant and the pixels are always square, no matter what the aspect ratio of the image is. Is there anything in manta that tries to enforce square pixels based on the image's aspect ratio?

        Dirk



Archive powered by MHonArc 2.6.16.

Top of page