Hi everyone,
I've been looking at ScGeom, and I'm puzzled about the boolean "isNew". Has
"isNew" been used correctly when assigning prevNormal? In the following, "c"
is "interaction". If c->interactionGeometry is true, it would mean that
interactionGeometry has already existed? Wouldn't c->interactionGeometry mean
isOld?
bool isNew=c->interactionGeometry;
if(c->interactionGeometry)
scm=YADE_PTR_CAST<ScGeom>(c->interactionGeometry);
else { scm=shared_ptr<ScGeom>(new ScGeom());
c->interactionGeometry=scm; }
Real penetrationDepth=s1->radius+s2->radius-normal.Normalize(); /*
Normalize() works in-place and returns length before normalization; from here,
normal is unit vector */
scm->contactPoint=se31.position+(s1->radius-0.5*penetrationDepth)*normal;//0.5*(pt1+pt2);
#ifdef SCG_SHEAR
if(isNew) scm->prevNormal=normal;
else scm->prevNormal=scm->normal;
Yours,
CWBoon
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