BPOINT_NODE

Structure

A special (see remarks) primitive-level data type that stores the data associated with a SilverScreen Bezier control point.

 struct BPOINT_NODE

    {

    // All members of PRIM_NODE except first_hole pointer

    USINT32     bits;

    int         id;

    PRIM_NODE   *next_node;

    PRIM_NODE   *prev_node;

    OBJECT_NODE *parent

    // bezier control-point-specific members

    VERTEX      point;

    SS_XYZ      forward;

    SS_XYZ      backward;

    };

Members

(point-specific)

Remarks

An BPOINT_NODE is linked into an OBJECT_NODE as a PRIM_NODE, and it is in all respects but one. An BPOINT_NODE does not have a first_hole pointer, which is an homage paid to memory at the expense of clarity. What this means in practice is that you should not reference the 'first_hole' pointer of a PRIM_NODE until you are sure the PRIM_NODE is a closed primitive (BITS_CLOSED will be enabled on the 'bits' member).

See Also

xyz_of_vertex

Header

silver.h, ssnodes.h