Question #697545 on Yade changed:
https://answers.launchpad.net/yade/+question/697545
Liu Changdong posted a new comment:
Hi Jan：
I have tried the second method you gave me ‘using the pack.inHalfSpace’ .
However, the 'predicate(pos,r)' shows an error.
After my trial and error, I found the following method should to be
used:
halfSpace1 = pack.inHalfSpace((0.4,0.4,.4),Vector3(1,1,1)) #
pack.inHalfSpace(point,normal direction)
halfSpace2 = pack.inHalfSpace((0.6,0.6,.6),Vector3(-1,-1,-1))
#predicate0 = halfSpace1 & halfSpace2 # intersection
def isSoftRockParticle(b):
pos = b.state.pos
r = b.shape.radius
return halfSpace1(pos,r) and halfSpace2(pos,r)
Thanks again!
changdong Liu
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