Anim8or Community

My tool can convert .an8 to FBX including rigging.  XSI can import it.  May have caveats, but worth a shot.

http://goldeneyevault.com/viewfile.php?id=255

Yeah that's the header.  It's in An8File.cpp.   Perhaps it can't find that file, try adding everything to your project.    Although in visual studio, you'd be able to compile, but not link, if it could find the .h but didn't find the .cpp

Are you using visual studio?  I think in my program I just used the .cpp/.h files directly and worked fine, never tried the .lib.  Not sure what version visual studio, but the lib should match your version, and make sure MD, etc, match your settings in project properties - C/C++ - Code Generation - Runtime Library.  You can see it successfully used in my tool ( http://goldeneyevault.com/viewfile.php?id=255 )...maybe will help.  It should be similar in whatever compiler you use, I imagine, just including the cpp/h.


Basically just:
#include "Liban8/An8Loader.h"

An8File an8File;

   if( an8File.LoadFile(string((LPCTSTR)(inputFile))) == false)
   {
      return false;
   }

**I should note this working in bvh2anim8or, but I'd like to understand why mine isn't working.

Actually it only works for simpler models though.  More complicated and I can't get the bone orientation correct (nothing to do with actual rotation keyframes, just talking bone structure now).    I am using normalized Quat::RotateFromTo (root bone at 0,1,0) of absolute position of current - absolute position of previous, to go from previous bone to current, and assign that quaternion, but clearly something goes wrong at some point, to go from previous bone to next.  Maybe your logic is slightly different somehow?

The issue seems to be (in my code) that sometimes the quaternion is backwards. 

For example,
orientation { (-0.164697 0.000000 -0.000000 0.986344) } Wrong
vs
orientation { (0.16470 0.00000 0.00000 -0.98634) } Right

When startLink = {x=0.00000000 y=40.600006 z=-532.50000 ...}
And endLink = {x=0.00000000 y=-54.827942 z=-210.49976 ...}

Then Quat RotFromTo startLink to endLink basically

Quat MUST_USE_RESULT Quat::RotateFromTo(const float3 &sourceDirection, const float3 &targetDirection)
{
   assume(sourceDirection.IsNormalized());
   assume(targetDirection.IsNormalized());
   float angle = sourceDirection.AngleBetweenNorm(targetDirection);
   assume(angle >= 0.f);
   // If sourceDirection == targetDirection, the cross product comes out zero, and normalization would fail. In that case, pick an arbitrary axis.
   float3 axis = sourceDirection.Cross(targetDirection);
   float oldLength = axis.Normalize();
   if (oldLength == 0)
      axis = float3(1, 0, 0);
   return Quat(axis, angle);
}

Code is:
if (length > 0)
{
if (realParent == NULL) // From TopJoint
         {
            quat = Quat::RotateFromTo(float3(0,1,0), bone->boneEnd->positionAbsolute.Normalized());

            length = bone->boneEnd->positionAbsolute.Length();
         }
         else
         {
            float3 startLink = realParent->boneEnd->positionAbsolute - ((realParent->boneStart == 0) ? float3(0,0,0) : realParent->boneStart->positionAbsolute);
            float3 endLink = bone->boneEnd->positionAbsolute - bone->boneStart->positionAbsolute;
            
            quat = Quat::RotateFromTo( startLink.Normalized(), endLink.Normalized() );

            length = (bone->boneEnd->positionAbsolute - bone->boneStart->positionAbsolute).Length();
         }
}
else
      {
         quat = Quat(0, 0, 0, 1);
      }

Can you look at this bvh to see why it's not cooperating like your two examples, using your tool.

Here is for sure a valid bvh, I can look at it fine in bvhacker, but it looks off in anim8or after conversion.

http://goldeneyevault.com/priv/animationdamjump.bvh

Hi again, I was able to get what I wanted to do, though a different way, but it is not working perfectly.  I think there is a problem with your BVH convertor also, as I was trying to see if it did better.  It does not do well on my BVH test. 

Source:
http://www.mediafire.com/download/y78hcvzapvh4hne/animation.fbx

BVH attempt:
http://www.mediafire.com/download/i140norhf31gd48/DefaultAnimation.bvh
http://www.mediafire.com/download/49225tchu0ckdv6/DefaultAnimation.an8

My attempt (using my tool):
http://www.mediafire.com/download/k9311miosdl9d4w/myanimationconvertattempt.an8

Perhaps someone can help, I feel like sort of closer, perhaps the piece I am missing is still, how anim8or stores its angles.

I have a quaternion at a bone (absolute quaternion, basically, I trawled the hierarchy), that I'm doing rotation in anim8or of:
     x   0.52576530   float
     y   0.084034257   float
     z   0.40772036   float
     w   0.74180400   float

Off of this bone, in FBX format, a rotation (Euler XYZ of 58.675510 y=33.600880 z=38.327244), yields in anim8or 30 60 90, which matches and works great.  However, converting to anim8or also always yields a second solution for anim8or,  in this case, -150 120 -140.  I cannot figure out why in anim8or, that set of angles yields a different rotation visually.  The quaternions should be identical (or 360 degrees off).  Maybe someone can explain why those two rotations do not yield identical results about that bone, that would be very helpful!

I've attached the sample an8, go to sequence mode, then use this part: