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GLRECT(3G)			 OpenGL Manual			    GLRECT(3G)

NAME
       glRect - draw a rectangle

C SPECIFICATION
       void glRectd(GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2);

       void glRectf(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2);

       void glRecti(GLint x1, GLint y1, GLint x2, GLint y2);

       void glRects(GLshort x1, GLshort y1, GLshort x2, GLshort y2);

PARAMETERS
       x1, y1
	   Specify one vertex of a rectangle.

       x2, y2
	   Specify the opposite vertex of the rectangle.

C SPECIFICATION
       void glRectdv(const GLdouble * v1, const GLdouble * v2);

       void glRectfv(const GLfloat * v1, const GLfloat * v2);

       void glRectiv(const GLint * v1, const GLint * v2);

       void glRectsv(const GLshort * v1, const GLshort * v2);

PARAMETERS
       v1
	   Specifies a pointer to one vertex of a rectangle.

       v2
	   Specifies a pointer to the opposite vertex of the rectangle.

DESCRIPTION
       glRect supports efficient specification of rectangles as two corner
       points. Each rectangle command takes four arguments, organized either
       as two consecutive pairs of x y coordinates or as two pointers to
       arrays, each containing an x y pair. The resulting rectangle is defined
       in the z = 0 plane.

       glRect(x1, y1, x2, y2) is exactly equivalent to the following sequence:

	   glBegin(GL_POLYGON);
	   glVertex2(x1, y1);
	   glVertex2(x2, y1);
	   glVertex2(x2, y2);
	   glVertex2(x1, y2);
	   glEnd();

       Note that if the second vertex is above and to the right of the first
       vertex, the rectangle is constructed with a counterclockwise winding.

ERRORS
       GL_INVALID_OPERATION is generated if glRect is executed between the
       execution of glBegin() and the corresponding execution of glEnd().

SEE ALSO
       glBegin(), glVertex()

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			    GLRECT(3G)
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