D3DLINE

typedef struct _D3DLINE {

union {

WORD v1;

WORD wV1;

};

union {

WORD v2;

WORD wV2;

};

} D3DLINE, *LPD3DLINE;

Describes a line for the D3DOP_LINE opcode in the D3DOPCODE enumerated type.

wV1 and wV2

Vertex indices.

Because lines are rendered by using a list of vertices that are to be joined, one less than the count of lines will be rendered.