yade-dev team mailing list archive

[Václav Šmilauer <eudoxos@xxxxxxxx>]

It is ok. See SpheresContactGeometry first, where SCG_SHEAR is #defined.
It permits to use SpheresContactGeometry::updateShear instead of
SpheresContactGeometry::updateShearForce (think of plasticity and you
get the difference; in the first case, you have displacement value, then
compute force, the second case computes force directly, which is not as
flexible).

You can keep this bug open to serve as discussion for this particular
feature, if it is not clear.

-- 
Suspecting a bug with CSG_shear
https://bugs.launchpad.net/bugs/472987
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Status in Yet Another Dynamic Engine: New

Bug description:

Just mentioning this strange code, if somebody confirms this is correct, then the bug is closed.


InteractingSphere2InteractingSphere4SpheresContactGeometry.cpp, l.36

                scm->normal=normal;
	         ...
		#ifdef SCG_SHEAR
			if(isNew) scm->prevNormal=normal; 
			else scm->prevNormal=scm->normal;
		#endif