def bbox(cls, shapes, optimal=False, tolerance=0):
""" Compute the bounding box of the shape or list of shapes
Parameters
----------
shapes: Shape, TopoDS_Shape or list of them
The shapes to compute the bounding box for
Returns
-------
bbox: BBox
The boudning g
"""
from .occ_shape import coerce_shape
if not shapes:
return BBox()
bbox = Bnd_Box()
bbox.SetGap(tolerance)
if not isinstance(shapes, (list, tuple, set)):
shapes = [shapes]
add = BRepBndLib.AddOptimal_ if optimal else BRepBndLib.Add_
for s in shapes:
add(coerce_shape(s), bbox)
pmin, pmax = bbox.CornerMin(), bbox.CornerMax()
return BBox(*(pmin.X(), pmin.Y(), pmin.Z(), pmax.X(), pmax.Y(),
pmax.Z()))
def get_bounding_box(self, shape=None):
shape = shape or self.shape
if not shape:
return BBox()
bbox = Bnd_Box()
BRepBndLib.Add_(shape, bbox)
pmin, pmax = bbox.CornerMin(), bbox.CornerMax()
return BBox(*(pmin.X(), pmin.Y(), pmin.Z(), pmax.X(), pmax.Y(),
pmax.Z()))
def get_bounding_box(self, shapes):
""" Compute the bounding box for the given list of shapes. Return values
are in 3d coordinate space.
Parameters
----------
shapes: List
A list of TopoDS_Shape to compute a bbox for
Returns
-------
bbox: Tuple
A tuple of (xmin, ymin, zmin, xmax, ymax, zmax).
"""
bbox = Bnd_Box()
for shape in shapes:
BRepBndLib.Add_(shape, bbox)
try:
pmin = bbox.CornerMin()
pmax = bbox.CornerMax()
except RuntimeError:
return (0, 0, 0, 0, 0, 0)
return (pmin.X(), pmin.Y(), pmin.Z(), pmax.X(), pmax.Y(), pmax.Z())