PK_FACE_change_data_bend_t

struct PK_FACE_change_data_bend_s
    {
    PK_FACE_change_bend_type_t type;            --- the type of this bend face
    PK_ENTITY_t                tool_entity;     --- entity used to construct
                                                --- resultant face
    double                     offset;          --- forward offset distance
    double                     backward_offset; --- backward offset distance
    };
typedef struct PK_FACE_change_data_bend_s PK_FACE_change_data_bend_t;


Parameters of change operation bend.

For more details on bend parameters, see here.

For more details on the options you can use to control bends, see
here.

Used in:

PK_FACE_change_data_t

Description of fields:



'type'                   Whether the face is a side face, or an inner/outer
                         face.


'tool_entity'            If 'type' is PK_FACE_change_bend_c, then this should
                         be a face (referred to as the tool face), which is
                         used to construct the offset face for this inner or
                         outer face. Inner and outer faces come in pairs; two
                         faces will be considered a pair if their geometry are
                         offsets of each other, and there exists a side face
                         (ie, with type PK_FACE_change_bend_side_c) that is
                         adjacent to them both. The same value for
                         'tool_entity' should be supplied for both the inner
                         and outer face in a pair.

                         If 'type' is PK_FACE_change_bend_side_c, then this
                         should be an edge, which is used to construct the
                         ruled surface for this side face. The edge should
                         belong to the tool face supplied for the inner and
                         outer bend faces adjacent to this side face.


'offset'                 If 'type' is PK_FACE_change_bend_c, then this
                         represents the signed distance that the tool face
                         'tool_entity' should be offset by, in the direction
                         of the tool face's normal, to obtain the face to be
                         used in the resultant body.

                         If 'type' is PK_FACE_change_bend_side_c, then we
                         require two offset distances representing how far the
                         edge 'tool_entity' should be offset by in the
                         direction of the face normal of the tool face which
                         is supplied for the adjacent inner/outer bend face.
                         The distances are signed such that positive distance
                         represents in the direction of the face normal. These
                         two offsets are supplied as 'offset' and
                         'backward_offset', with the restriction that 'offset'
                         should be greater than 'backward_offset'.


'backward_offset'        If 'type' is PK_FACE_change_bend_c, then this field
                         has no effect.

                         If 'type' is PK_FACE_change_bend_side_c, then this
                         represents the backward offset distance for the edge.
                         See 'offset' for more information.