Debugdrawer: Disable trimesh normals, scaling multisphere

[ciphr]

Hello,
I wonder, if there is an option to hide normals of BVH trimesh in Debugdrawer in wireframe mode (those yellow pins).
Also, it seems that Multisphere (consisting of only one scaled sphere) doesn't appear with the correct scaling (simple boxes do). Or am I doing something wrong at this point?
And finally, do Ghostobjects show up in Debugdrawer? I'm not sure about the correct positioning, but I didn't see them.
Regards, Igor

[mi076]

I wonder, if there is an option to hide normals of BVH trimesh

No, it is hardcoded, you have to comment out several lines in btCollisionWorld.cpp,

Code: Select all

	  virtual void processTriangle(btVector3* triangle,int partId, int triangleIndex)
	  {
		  (void)partId;
		  (void)triangleIndex;

		  btVector3 wv0,wv1,wv2;
		  wv0 = m_worldTrans*triangle[0];
		  wv1 = m_worldTrans*triangle[1];
		  wv2 = m_worldTrans*triangle[2];
		  btVector3 center = (wv0+wv1+wv2)*btScalar(1./3.);

		  btVector3 normal = (wv1-wv0).cross(wv2-wv0);
		  normal.normalize();
		  btVector3 normalColor(1,1,0);
		  m_debugDrawer->drawLine(center,center+normal,normalColor);



		 
		  m_debugDrawer->drawLine(wv0,wv1,m_color);
		  m_debugDrawer->drawLine(wv1,wv2,m_color);
		  m_debugDrawer->drawLine(wv2,wv0,m_color);
	  }

[ciphr]

mi076, thanks, so it's more of a feature request... And what about MultiSphere? It looks bigger, than it is.

[mi076]

Also, it seems that Multisphere (consisting of only one scaled sphere) doesn't appear with the correct scaling (simple boxes do). Or am I doing something wrong at this point?

ok, i can confirm, in fact, if use setLocalScaling on Multisphere, radii/radius in debug drawer is not updated, but you can see bigger Aabbs (press 'a'). There is no non-uniform scaling for spheres, so you can just update radius... it is possible to change radii of individual spheres in multisphere
http://bulletphysics.org/Bullet/phpBB3/ ... php?t=6123

Edit: ghosts object's shape shows up

[ciphr]

mi076, thanks for comments. Now I'm aware

[Erwin Coumans]

Those debug trimesh normals are only displayed when you enable wireframe debug rendering, right?

btIDebugDraw::DBG_DrawWireframe

Thanks,
Erwin

[ciphr]

Yes, I'd like to hide them, but to see the wireframe, because in high-poly trimesh normals cover the biggest part of the screen, usually at rounded edges (didn't do optimization yet, since it doesn't produce wrong behaviour nor slow down simulation).