R – Having Trouble importing skinned mesh into PaperVision3d 3.0 from COLLADA

colladapapervision3dskinning

I can export just a mesh, but a mesh with a Skin modifier bound to Biped does not work. The skin is not imported as TriangleMesh3D or a skinning class, and is instead a DisplayObject3D class that lacks geometry. No warnings are given.

Any idea how I should import a COLLADA file with skinning importation?

Best Answer

The trick is to load it as a DAE as opposed to a COLLADA. For instance:

var cow2:DAE = new DAE();
cow2.load(new XML(new CowDAE()), cowMaterials);

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C# – char array marshaling in C#

answer:

Have a look at David Heffernan's comments - he seems more knowledgeable and to have spent a lot more time on this.

previous attempts:

Then again, after some more search, that should answer your exact question.

If you want to marshal to char* (which basically is the same as char[]) you will need to use a StringBuilder.

See this completely unrelated example that shows the signature from pinvoke.net.

You should then either recreate your structure or internally copy/convert it (if used elsewhere as well) to the following:

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
 public struct CallbackParams
 {
     [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
     public StringBuilder displayName;

     [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
     public StringBuilder userName;
}

Also be careful that StringBuilder already does all the marshalling automatically.. also there is no need for the ref anymore. Actually, using ref will cause problems.

cb.displayName = "XYZ";
cb.userName = "ABC";
code = 0;
DLLCBFunc1(code, cb);

Don't know out of my head about assigning strings to stringbuilders.. might be you have to do

cb.displayName = new StringBuilder("XYZ");

edit

As David Hefferman has pointed out.. I have missed the point. :)

So... in your case you probably will have to declare the char[80] as Byte[80] arrays and manually copying the string's content, also making sure to mind the likely unicode->ansi conversion. Also, after the call, you will need to copy back.

You can find some info about doing that here on StackOverflow.

edit

Put answer to top.

Best Answer

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C# – char array marshaling in C#

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