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Hi LIna,<br>
<br>
<div class="moz-cite-prefix">On 07/05/2014 18:46, Lina Halper wrote:<br>
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<p class="MsoNormal">Hello, <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a couple of question about importing
part of blender. This test is done using FBXs from UE4 and
other sources, and these two seem the biggest hurdle for us to
work with blender.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<!--[if !supportLists]--><span style="mso-list:Ignore">1.<span
style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]-->Converting Scene issue<br>
- when importing the FBX exported from UE4 to blender, we see
mesh is rotated. <br>
- when we open this in Maya or FBX review, we don’t see this
issue<br>
- I’m wondering how you convert scene when imported. Do you
read current scene set up and convert?<br>
- Now if you modify and export back out, now mesh is rotated <o:p></o:p></p>
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Currently, Blender does not use axis data stored inside FBX (mainly
because, since most format do not have such info, we have a common
system of front, up axes settings shared bewteen many export/import
operators, that generate a global transform matrix for us). It’s on
my TODO list to use such data from FBX files (some kind of 'auto
orientation' option)… But currently, you have to set correctly
foward and up axes so that they match the other app conventions (as
most FBX exporters do not allow to modify these settings, afaik).<br>
<br>
You may also have more issues if both app do not share the same ref
system (left/right hand stuff, not sure UE4 respects OpenGL or
DirectX convention here?).<br>
<br>
<blockquote
cite="mid:79D602BCAAC5A14D8CB92DB9CAD29D22589EA798@MAIL-03.epicgames.net"
type="cite">
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<p class="MsoListParagraph"
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style="mso-list:Ignore">2.<span style="font:7.0pt
"Times New Roman"">
</span></span><!--[endif]-->Converting Unit issue<br>
- when importing FBX or Collada, if I have “import unit”
option off, it imports as very small (1/100<sup>th</sup>). If
I have that option on, it imports correctly.
<br>
- Is this intended? How do you see your unit conversion with
other package?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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FBX import does not support units at all currently, afaik… And when
there are no units, again different apps have different conventions,
so one might export in mm when Blender will import in BlenderUnits
(commonly accepted as meters, though this is configurable and
ultimately a matter of convention, again). That’s why you have a
Scale setting in importers and exporters, to apply some correction
if needed.<br>
<br>
<blockquote
cite="mid:79D602BCAAC5A14D8CB92DB9CAD29D22589EA798@MAIL-03.epicgames.net"
type="cite">
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<p class="MsoNormal">Thanks, <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">--Lina,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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</blockquote>
Cheers,<br>
Bastien<br>
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