Hi Thomas,
I'm sorry for my storm of emails here ;')
I've spend today learning the pythonocc API, which is very
interesting, but I've been experiencing *numerous* crashes that I
cannot explain.
I hope you dont mind if I share some of 'em with you?
Is there a reason why the following code is crashing?
It sures does return a Face, but when accessing its methods, Boom...
shape = ms.Shape()
topo = Topo(shape)
shape.topology = topo
for f in shape.topology.faces():
f # TopoDS_Face
f.Checked() # Crashes
#------
Same thing when accessing the mesh of an object.
When accessing triangles, Kaboom...
sphere =occ.BRepPrimAPI_MakeSphere(12,12)
#myShape = sphere.Shape()
ms = occ.BRepBuilderAPI_MakeSolid()
ms.Add(sphere.Shell())
ms.Build()
myShape = ms.Solid()
bbox = get_bounding_box(ms.Shape())
myT = occ.BRepMesh_FastDiscret(0.1, ms.Shape(), bbox, 5.)
n_domains, n_tris, n_verts = myT.NbDomains(), myT.NbTriangles(),
myT.NbVertices()
for i in xrange(100):
tri = myT.Triangle(i)
# Crashes here...
#------
Here's what I need to get: that is to get the UV value for a vertex of
a mesh representing a surface.
It seems I would need the BrepAdaptor_HSurface class to do so...
bbox = get_bounding_box(ms.Shape())
myT = occ.BRepMesh_FastDiscret(0.1, ms.Shape(), bbox, 5.)
n_domains, n_tris, n_verts = myT.NbDomains(), myT.NbTriangles(),
myT.NbVertices()
'''
Standard_EXPORT gp_XY FindUV (const TopoDS_Vertex &V, const
gp_Pnt2d &XY, const Standard_Integer ip, const
Handle(BRepAdaptor_HSurface)&S, const Standard_Real mindist)
Find the UV value of the Surface of a Vertex on the Mesh
We'll need to find the gaussian curvature of that UV value and map it
to a Color
'''
# missing the BrepAdaptor_HSurface
myT.FindUV()
for i in xrange(100):
tri = myT.Triangle(i)
# Kaboom
Note that when getting the face using the this method, we *do* have
access to its methods!
# interestingly, this works:
_f = myT.DomainFace(1)
# now we *can* use all methods, yeaah!
_f.Checked()
So, I'm really curious to know whether I've completely looked over
some important OCC concepts.
The other thing is that I'm completely lost on how one should deal
with Handle_* objects.
That's something that should go onto the Wiki for sure.
Cheers,
-jelle
_______________________________________________
Minerva-pythonocc mailing list
Minerva-pythonocc@gna.org
https://mail.gna.org/listinfo/minerva-pythonocc
