What are the best settings in Moi3D & Cinema4D -> that Import/Export have the equal Size?

I have in Moi3D my units in Centimeter and in C4D in cm too, but my meshes are not equal ...

e.g.

1) I did export a part from a modell as OBJ in Cinema 4D R16, with the old goo Riptide Plugin
2) I did made an import with Max Smirnovs Plugin into Moi3d - and made some changes on the object (similar like Andrej Samardac between Moi3D/Nvil) ...
3) I made an ReImport of the same Object in C4D ... and booom .... the size is to big, and the center of world axis is bad too ...

Hi Lordfox - unfortunately the OBJ format does not have any mechanism in it to label what unit system was used for creating it, so there isn't any way for your unit setting to be preserved in the generated OBJ file.

I seem to remember that applying a scaling factor of 0.01 to OBJ exports helped for transfer into Cinema4D. You can set that scale factor to be applied to OBJ exports from MoI by the setting under Options > Import/Export > OBJ options > "Scale factor". Put in 0.01 in that field to have that scaling applied to your export.

Or maybe I've got it reversed and you need to put in 100 in there, try that too.

I think the issue was that Cinema4D automatically scaled stuff up or down by a factor of 100 and so you need to reverse that.

- Michael

Thank you, thats right and in OBJ there are also no informations about the world axis - position too ...

But I have the idea to use a simple global-BoundingBox - made in Moi3D - using the same Bounding Box - also for other 3D Tools, so I can fix position and scaling by snapping

Hi Lordfox - did setting the scale factor export option in MoI not produce the proper result for you?

I would think that once you have that set up, it should produce both the right size and position for the geometry also.

There isn't any concept of a "axis local origin" spot in OBJ format though (nor in MoI either), so the object's local axis will probably just be at 0,0,0 - but the actual geometry like all the vertices and faces should be in the correct position.

If you want you can reposition the local axis points to go to the object's bounding box center, that's a command in Cinemea4D on the menu something like Structure > Axis > Center Axis To. Run that command in Cinema4D after you have done the import and have the imported objects selected.

See here for some more info on it: http://moi3d.com/forum/index.php?webtag=MOI&msg=7352.1

- Michael

I go from MOI to Cinema 4D every day all you need is your units to match. Moi units in centimeter, Cinema units is centimeters, and when you import the .obj you need to choose centimeters in the import dialogue. You should also set .obj import scale in Cinema's preferences to centimeters.

-Shane