PK_sweep_guide_control_t

struct PK_sweep_guide_control_s
    {
    PK_VERTEX_array_t             profile_matches;
                                              --- guide start vertices
    PK_sweep_guide_clamp_type_t   clamp_type; --- clamp type
                                              --- (PK_sweep_guide_clamp_none_c)
    PK_sweep_guide_clamp_dirn_t   dirn_clamp; --- direction clamp
    PK_VERTEX_array_t             guide_matches;
                                              --- corresponding profile
                                              --- vertices
    };

typedef struct PK_sweep_guide_control_s PK_sweep_guide_control_t;



This structure holds options specific to each guide in sweeping.

Used in:

PK_BODY_make_swept_body_2_o_t

This structure has the following fields :

'profile_matches'   An array of vertices, the length of which should be equal
                    to the number of profiles. For each profile, a guide vertex
                    should be specified which indicates the point on the guide
                    which corresponds to that profile.

'clamp_type'        The clamp to apply to this guide. If any guides have a
                    clamp type other than PK_sweep_guide_clamp_none_c, then:
                      o These guides must have the same clamp type.
                      o 'guide_scale' must be set to PK_sweep_guide_uniform_c.
                      o The number of guides must be less than or equal to two.

                    The selection of the clamp type indicates which of the
                    following fields actually holds the description of the
                    constraint.

                    For PK_sweep_guide_clamp_dirn_c, the 'dirn_clamp' field
                    is examined for the description.

                    For PK_sweep_guide_clamp_fixed_c, no field is examined for
                    the description.

                    For PK_sweep_guide_clamp_none_c, no field is examined for
                    the description.

                    (PK_sweep_guide_clamp_none_c)

'dirn_clamp'        A clamp direction may be specified at any or all of the
                    guide wire vertices, and these are used to define a clamp
                    direction at each point on the guide wire.

                    A clamp direction is swept so that it follows the path by
                    keeping at a fixed angle to the sweep direction. If there
                    is more than one clamp direction, the supplied clamp
                    directions are interpolated.

                    The swept cross-section will be transformed so that it
                    preserves its angular relationship to the clamp directions
                    at each guide.

'guide_matches'     An array of vertices, the length of which should be equal
                    to the number of profiles. For each profile, a vertex
                    should be specified which indicates the point on
                    that profile corresponding to the relevant guide vertex
                    in 'profile_matches'. This array is required if
                    'guide_scope' has been set to PK_sweep_guide_scope_local_c;
                    otherwise, it should not be set.