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GLEDGEFLAG(3G)			 OpenGL Manual			GLEDGEFLAG(3G)

NAME
       glEdgeFlag - flag edges as either boundary or nonboundary

C SPECIFICATION
       void glEdgeFlag(GLboolean flag);

PARAMETERS
       flag
	   Specifies the current edge flag value, either GL_TRUE or GL_FALSE.
	   The initial value is GL_TRUE.

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 GL_TRUE if flag
       is GL_TRUE and to GL_FALSE 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
       GL_POLYGON_MODE is set to GL_POINT or GL_LINE. 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 GL_EDGE_FLAG

SEE ALSO
       glBegin(), glEdgeFlagPointer, glPolygonMode()

COPYRIGHT
       Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
       under the SGI Free Software B License. For details, see
       http://oss.sgi.com/projects/FreeB/.

AUTHORS
       opengl.org

opengl.org			  03/16/2013			GLEDGEFLAG(3G)

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