1GLEDGEFLAG(3G)                   OpenGL Manual                  GLEDGEFLAG(3G)
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NAME

6       glEdgeFlag - flag edges as either boundary or nonboundary
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C SPECIFICATION

9       void glEdgeFlag(GLboolean flag);
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PARAMETERS

12       flag
13           Specifies the current edge flag value, either GL_TRUE or GL_FALSE.
14           The initial value is GL_TRUE.
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C SPECIFICATION

17       void glEdgeFlagv(const GLboolean * flag);
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PARAMETERS

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

25       Each vertex of a polygon, separate triangle, or separate quadrilateral
26       specified between a glBegin()/glEnd() pair is marked as the start of
27       either a boundary or nonboundary edge. If the current edge flag is true
28       when the vertex is specified, the vertex is marked as the start of a
29       boundary edge. Otherwise, the vertex is marked as the start of a
30       nonboundary edge.  glEdgeFlag sets the edge flag bit to GL_TRUE if flag
31       is GL_TRUE and to GL_FALSE otherwise.
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33       The vertices of connected triangles and connected quadrilaterals are
34       always marked as boundary, regardless of the value of the edge flag.
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36       Boundary and nonboundary edge flags on vertices are significant only if
37       GL_POLYGON_MODE is set to GL_POINT or GL_LINE. See glPolygonMode().
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NOTES

40       The current edge flag can be updated at any time. In particular,
41       glEdgeFlag can be called between a call to glBegin() and the
42       corresponding call to glEnd().
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ASSOCIATED GETS

45       glGet() with argument GL_EDGE_FLAG
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SEE ALSO

48       glBegin(), glEdgeFlagPointer, glPolygonMode()
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51       Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
52       under the SGI Free Software B License. For details, see
53       http://oss.sgi.com/projects/FreeB/.
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AUTHORS

56       opengl.org
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60opengl.org                        06/10/2014                    GLEDGEFLAG(3G)
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