def get_boundingbox(shape, tol=1e-6, use_mesh=True):
""" return the bounding box of the TopoDS_Shape `shape`
Parameters
----------
shape : TopoDS_Shape or a subclass such as TopoDS_Face
the shape to compute the bounding box from
tol: float
tolerance of the computed boundingbox
use_mesh : bool
a flag that tells whether or not the shape has first to be meshed before the bbox
computation. This produces more accurate results
"""
bbox = Bnd_Box()
bbox.SetGap(tol)
if use_mesh:
mesh = BRepMesh_IncrementalMesh()
mesh.SetParallelDefault(True)
mesh.SetShape(shape)
mesh.Perform()
if not mesh.IsDone():
raise AssertionError("Mesh not done.")
brepbndlib_Add(shape, bbox, use_mesh)
xmin, ymin, zmin, xmax, ymax, zmax = bbox.Get()
return xmin, ymin, zmin, xmax, ymax, zmax, xmax - xmin, ymax - ymin, zmax - zmin
def get_boundingbox(shape, tol=TOLERANCE):
'''
:param shape: TopoDS_Shape such as TopoDS_Face
:param tol: tolerance
:return: xmin, ymin, zmin, xmax, ymax, zmax
'''
bbox = Bnd_Box()
bbox.SetGap(tol)
brepbndlib_Add(shape, bbox)
xmin, ymin, zmin, xmax, ymax, zmax = bbox.Get()
return xmin, ymin, zmin, xmax, ymax, zmax
def compute_bbox(shp, *kwargs):
print("Compute bbox for %s " % shp)
for shape in shp:
bbox = Bnd_Box()
brepbndlib_Add(shape, bbox)
xmin, ymin, zmin, xmax, ymax, zmax = bbox.Get()
dx = xmax - xmin
dy = ymax - ymin
dz = zmax - zmin
print("Selected shape bounding box : dx=%f, dy=%f, dz=%f." %
(dx, dy, dz))
print(" bounding box center: x=%f, y=%f, z=%f" %
(xmin + dx / 2., ymin + dy / 2., zmin + dz / 2.))