Stick a billboard to a skinned mesh?

[lulzfish]

I'm working on a program that is supposed to simulate cutting someone with a scalpel.

It needs to show blood near the cut. Currently I'm trying to use billboards for this.*

However, I need the billboards to move with the person. I'm assuming that I can't use the skeleton because I don't have any weights for the billboards.

My plan is to modify getSceneNodeAndCollisionPointFromRay (Which intersects the scalpel with the person) to return the index of the triangle instead of just its points. With the index, I can track the triangle and find some way to move the billboard with it.

Is there any simpler / better way to do this?

* I could also use a texture map for blood, in that case I think I would need the UV coordinates of the triangle, so I can reverse from a 3D position to a 2D texture coordinate.

[hendu]

Yes, read the left4dead wounds paper.

[smso]

Search for decal in the forum.

Regards,
smso

[ACE247]

Hey thanks hendu for the left4dead paper recommendation!
Didn't know Valve had so much stuff out there, guess I'm sorted with reading material for the weekend.

[lulzfish]

Search for decal in the forum.

Regards,
smso

Thanks, I forgot about that.

So I'm trying http://irrlicht.sourceforge.net/forum/v ... =6&t=44968

But it looks like there's a couple of files missing? The download doesn't have DecalLoader.h or EmptyDecalSceneNode.h.

Edit: It works if I comment out the #Includes that reference those files.

[lulzfish]

http://imgur.com/XvuNn

It doesn't seem to stick to the animated mesh. (The cylinder is doing crunches) It works well aside from that.