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

6       glRect - draw a rectangle
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C SPECIFICATION

9       void glRectd(GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2);
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11       void glRectf(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2);
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13       void glRecti(GLint x1, GLint y1, GLint x2, GLint y2);
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15       void glRects(GLshort x1, GLshort y1, GLshort x2, GLshort y2);
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PARAMETERS

18       x1, y1
19           Specify one vertex of a rectangle.
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21       x2, y2
22           Specify the opposite vertex of the rectangle.
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C SPECIFICATION

25       void glRectdv(const GLdouble * v1, const GLdouble * v2);
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27       void glRectfv(const GLfloat * v1, const GLfloat * v2);
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29       void glRectiv(const GLint * v1, const GLint * v2);
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31       void glRectsv(const GLshort * v1, const GLshort * v2);
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PARAMETERS

34       v1
35           Specifies a pointer to one vertex of a rectangle.
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37       v2
38           Specifies a pointer to the opposite vertex of the rectangle.
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DESCRIPTION

41       glRect supports efficient specification of rectangles as two corner
42       points. Each rectangle command takes four arguments, organized either
43       as two consecutive pairs of x y coordinates or as two pointers to
44       arrays, each containing an x y pair. The resulting rectangle is defined
45       in the z = 0 plane.
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47       glRect(x1, y1, x2, y2) is exactly equivalent to the following sequence:
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49           glBegin(GL_POLYGON);
50           glVertex2(x1, y1);
51           glVertex2(x2, y1);
52           glVertex2(x2, y2);
53           glVertex2(x1, y2);
54           glEnd();
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57       Note that if the second vertex is above and to the right of the first
58       vertex, the rectangle is constructed with a counterclockwise winding.
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ERRORS

61       GL_INVALID_OPERATION is generated if glRect is executed between the
62       execution of glBegin() and the corresponding execution of glEnd().
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SEE ALSO

65       glBegin(), glVertex()
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68       Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
69       under the SGI Free Software B License. For details, see
70       http://oss.sgi.com/projects/FreeB/.
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AUTHORS

73       opengl.org
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77opengl.org                        07/13/2018                        GLRECT(3G)
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