Animation too far away from origo gets screwed :/

Autodesk Softimage XSI (Developed by Face)
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PeterCGS
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Joined: Tue Apr 13, 2010 2:36 pm

Just tried yesterday on a scene to do a small pan motion on the camera, quite far away from origo (something like -6000,9000,2000 in global values).. The camera motion got crazy, when rendered in Octane and it started to get a really jerky motion.. Placing everything under a null, and center the whole scene worked, but its still a little limiting. Is there a decimal problem/restriction in how large scenes we can do?

/Regards Peter
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roeland
OctaneRender Team
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Octane uses floating point precision, which has a limited precision. If this is a problem depends both the distance between the camera position and target, and on the distance between the camera position and the origin. If the camera is this far from the origin, the camera will start acting weird because of rounding errors if the position–target distance gets lower than about 0.20. Zooming out a bit will stop the weird behavior.

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Roeland
PeterCGS
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Ok, I guess it will be some try-n-error then.. Is there anyway to turn off the "point at target", and only use the cameras translation/rotation values?
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face
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If you haven´t a crazy aperture, you can maybe use an other native unit size.

face
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PeterCGS
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Joined: Tue Apr 13, 2010 2:36 pm

I get geometry errors when going smaller in unit size.. And other "ringing" geometry errors when going higher..I have a very picky scene it seems :P No worries, I work around it..
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roeland
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The ringing could be due to a too low rayepsilon setting. If your scene is several kilometers across you have to set it higher than the default value.

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Roeland
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