[Bf-vfx] Bundle display orientation

[Coen Spoor]

Thanks for the answers Sergei, and I'm glad you like the proposed solution by Sebastian and myself.

Coen

Op 18 sep. 2011 om 12:00 heeft "Sergey I. Sharybin" <g.ulairi at gmail.com> het volgende geschreven:

> Hi all,
> 
> Answers are inlined.
> 
> Ton Roosendaal wrote:
>> 
>> Hi Seb,
>> 
>> I'm not sure how to interpret this request; but to me it seems very sane and predictable to only draw bundles inside the camera transformation. Camera tracking is based on camera-space, it can only give camera-space results. There's no information in video/film footage to derive where 'up' or 'down' is, or how a camera is tilted.
> Yes, there's no such information came from camera solver directly, but it's what definitely known after you oriented camera in scene (defining origin, floor, axis direction).
>> What you do by positioning/rotating/scaling camera is to provide a mapping from 'video/camera space' into Blender's scene (world space). A user can decide to either scale or rotate the objects in a scene into the camera, or the other way around. All very basic, predictable and nice I think. :)
> Currently bundles are used as a "reference" to place objects in Blender's scene, you can't actually parent something to bundle and, anyway, if it was possible i don't think having bundles oriented in camera space was so helpful. Look at bundles as representation of real features -- real features are in global space, not in camera space and usual workflow is to orient solved camera in a way, that scene's floor respects real floor and X axis respects some "axis" from real world and all objects placed in scene respects things happening on the footage. That's why bundles which are used as reference are nicer not follow camera rotation.
> 
> It's not difficult to achieve and it should be more useful than current behavior.
>> -Ton-
>> 
>> ------------------------------------------------------------------------
>> Ton Roosendaal  Blender Foundation   ton at blender.org    www.blender.org
>> Blender Institute   Entrepotdok 57A  1018AD Amsterdam   The Netherlands
>> 
>> On 18 Sep, 2011, at 11:16, Sebastian König wrote:
> -- 
> With best regards, Sergey I. Sharybin
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