gledgeflag(3G) — IRIX 6.5.3f



glEdgeFlag(3G)                 OpenGL Reference                 glEdgeFlag(3G)



NAME
     glEdgeFlag, glEdgeFlagv - flag edges as either boundary or nonboundary


C SPECIFICATION
     void glEdgeFlag( GLboolean flag )


PARAMETERS
     flag  Specifies the current edge flag value, either GLTRUE or GLFALSE.
           The initial value is GLTRUE.

C SPECIFICATION
     void glEdgeFlagv( const GLboolean *flag )


PARAMETERS
     flag Specifies a pointer to an array that contains a single boolean
          element, which replaces the current edge flag value.

DESCRIPTION
     Each vertex of a polygon, separate triangle, or separate quadrilateral
     specified between a glBegin/glEnd pair is marked as the start of either a
     boundary or nonboundary edge.  If the current edge flag is true when the
     vertex is specified, the vertex is marked as the start of a boundary
     edge.  Otherwise, the vertex is marked as the start of a nonboundary
     edge.  glEdgeFlag sets the edge flag bit to GLTRUE if flag is GLTRUE,
     and to GLFALSE otherwise.

     The vertices of connected triangles and connected quadrilaterals are
     always marked as boundary, regardless of the value of the edge flag.

     Boundary and nonboundary edge flags on vertices are significant only if
     GLPOLYGONMODE is set to GLPOINT or GLLINE.  See glPolygonMode.

NOTES
     The current edge flag can be updated at any time.  In particular,
     glEdgeFlag can be called between a call to glBegin and the corresponding
     call to glEnd.

ASSOCIATED GETS
     glGet with argument GLEDGEFLAG


SEE ALSO
     glBegin, glEdgeFlagPointer, glPolygonMode









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