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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 (C) 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				    06/10/2014				   GLEDGEFLAG(3G)
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