DEV-thread - Blendigo v0.7 - material-editor-exporter

Wedge · Post by **Wedge** » Tue Mar 27, 2007 8:47 am

Yes I have been seeing this happen on my tests too. (not in Blendigo) My guess is the primitive uses Indigo units and some Blender scenes don't follow the units so the sphere is incorrectly sized in the scene.

I have not looked for a solution yet since I think it is unfixable.

DaveC: Is that scale * 2 a solution or did it only work in your scene? How big is your scene in Indigo units?

Update again (clearer I hope): I want to talk a little more about this... I am going to guess that scaling in edit mode alters its vertex data (or mesh data) to represent its size. Since Indigo primitives have no mesh data in Blender, it is only altered by scaling in Object mode. This alters the <scale> tags.

I'm still going to guess the scale value that we can take is a big variable and no equation can be figured because all scenes made in Blender can follow different units = different measurement.

But I have not tested all of these 'guesses.'

For Kram: I'm not sure what you mean by dimension. Blender gives us access to scale, rotation, and location. Of course we also get access to the mesh data. Blender scaling in edit mode alters this mesh data. Blender scaling in object mode alters the scale. It would seem like a useful value to have, dimension that is, that told the size of the object/mesh whatever as a whole. Right?

Stur · Post by **Stur** » Tue Mar 27, 2007 8:53 am

Another (minor) bug : if an object is visible in more than one layer in blender, it will be exported into more than one instance in the xml file.

eg. if the object is visible in 5 layers, it will be instanced 5 times.

DaveC · Post by **DaveC** » Tue Mar 27, 2007 9:06 am

Wedge, I believe scale*2 is definitely a solution. scale = radius. the size of the mesh dimensions is irrelevant. so a scale of 5 is equal to a radius of 5 meters.

Wedge · Post by **Wedge** » Tue Mar 27, 2007 9:26 am

Ok DaveC, I will perform some more tests to understand more. Thank you for the solution.

Update: After more tests were performed...I find that the only problem is when you scale the mesh in edit mode. Since it alters the mesh data in this mode and not the scale, this is the problem. After placing a new uvsphere in my scene, and only scaling in object mode, I find no issues with scaling the sphere primitive.

If you alter the sphere primitive in any way in edit mode, delete it and place a new one in the scene and only change it in object mode.

I have scaled it a different size for a couple of test runs along with non-primitive objects in my test scene, and everything looks ok.

zuegs · Post by **zuegs** » Tue Mar 27, 2007 8:34 pm

Yes, the primitives uses only the object scale. The idea was, that you create a sphere in your scene for the primitive, update the name to "*.sphere" and then scale it in object-mode to the correct size. Note that when you create a new sphere in blender it has a radius of 1BU. So, as long you resize the sphere in object-mode the object scale should match the final radius. Also note that this is only a workaround to use indigo-primitives as blender doesn't have such primitives

@Stur:

Another (minor) bug : if an object is visible in more than one layer in blender, it will be exported into more than one instance in the xml file.

Thanks, will check this

DaveC · Post by **DaveC** » Tue Mar 27, 2007 9:05 pm

Thanks, Zuegs. I now know exactly what to tell people if they ever have this problem...

Are spheres the only primitives you can export? If not, does scale effect other primitives too?

zuegs · Post by **zuegs** » Tue Mar 27, 2007 11:49 pm

@DaveC:
I think there's a "*.plane" primitive too for an infinit plane. So you can create a blender plane and rename it, so indigo will just replace it with an infinit plane. For planes the object-position and object-rotation is used, so don't edit the mesh

pafurijaz · Post by **pafurijaz** » Wed Mar 28, 2007 2:21 am

HOW TO CREATE A TRANSPARENT PAPER WITH BLENDINDIGO? PLEASE SOMEONE SHOW ME THE MATERIAL SETTING PANEL, IF POSSIBILE.

Kram1032 · Post by **Kram1032** » Wed Mar 28, 2007 6:23 am

Here is a quick screen of blenders Dimension values!
It's the exact amount of BU in one of the three dimensions

(standard cube = 2 2 2, as the site lengh is 2 BU

)

Kram1032 · Post by **Kram1032** » Wed Mar 28, 2007 6:27 am

transparent paper?
You mean paper with SSS or soft tissue / tissue paper / wrapping tissue? (which has SSS too

)

zuegs · Post by **zuegs** » Wed Mar 28, 2007 7:16 am

SMALL UPDATE

- replaced ImageSelector with FileSelector for better performance
- fixed bug when object is visible on more than on layer

Kram1032 · Post by **Kram1032** » Wed Mar 28, 2007 7:19 am

can you use this Dimension?
It'S absolute, as already said ^^
It would be much easier to use this

thx, btw

zuegs · Post by **zuegs** » Wed Mar 28, 2007 8:31 am

@Kram:
yes, i see all 3 dimensions

, it seems that i can't access the dimensions values trough python, i will check this again. Thx for the hint

Kram1032 · Post by **Kram1032** » Wed Mar 28, 2007 8:54 am

good^^

Wedge · Post by **Wedge** » Wed Mar 28, 2007 3:13 pm

As far as I can tell there is no documentation of a dimension value. I don't have the link with me now, but go to Blender main site, click download, click documentation, then follow the link to the Python 243 manual.

From here you can search away.

DEV-thread - Blendigo v0.7 - material-editor-exporter

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