Method filter

cadquery/selectors.py:167–189

There are lots of kinds of filters, but for planes they are always based on the normal of the plane, and for edges on the tangent vector along the edge

(self, objectList: Sequence[Shape])

        return True

    def filter(self, objectList: Sequence[Shape]) -> List[Shape]:
        """
        There are lots of kinds of filters, but for planes they are always
        based on the normal of the plane, and for edges on the tangent vector
        along the edge
        """
        r = []
        for o in objectList:
            # no really good way to avoid a switch here, edges and faces are simply different!
            if o.ShapeType() == "Face" and o.geomType() == "PLANE":
                # a face is only parallel to a direction if it is a plane, and
                # its normal is parallel to the dir
                test_vector = cast(FaceProtocol, o).normalAt(None)
            elif o.ShapeType() == "Edge" and o.geomType() == "LINE":
                # an edge is parallel to a direction if its underlying geometry is plane or line
                test_vector = cast(Shape1DProtocol, o).tangentAt()
            else:
                continue

            if self.test(test_vector):
                r.append(o)

        return r


class ParallelDirSelector(BaseDirSelector):