def system(self):
self._system = GProp_GProps()
# todo, type should be abstracted with TopoDS...
_topo_type = self.instance.topo_type
if _topo_type == 'face' or _topo_type == 'shell':
brepgprop_SurfaceProperties(self.instance, self._system)
elif _topo_type == 'edge':
brepgprop_LinearProperties(self.instance, self._system)
elif _topo_type == 'solid':
brepgprop_VolumeProperties(self.instance, self._system)
return self._system
def shape_faces_surface():
""" Compute the surface of each face of a shape
"""
# first create the shape
the_shape = BRepPrimAPI_MakeBox(50., 30., 10.).Shape()
# then loop over faces
t = TopologyExplorer(the_shape)
props = GProp_GProps()
shp_idx = 1
for face in t.faces():
brepgprop_SurfaceProperties(face, props)
face_surf = props.Mass()
print("Surface for face nbr %i : %f" % (shp_idx, face_surf))
shp_idx += 1
def surface(self):
'''returns the area of a surface
'''
prop = GProp_GProps()
brepgprop_SurfaceProperties(self.shape, prop, self.tolerance)
return prop