<HTML>
<BODY>
<PRE>
<STRONG>NAME</STRONG>
<STRONG>glRectd,</STRONG> <STRONG>glRectf,</STRONG> <STRONG>glRecti,</STRONG> <STRONG>glRects,</STRONG> <STRONG>glRectdv,</STRONG> <STRONG>glRectfv,</STRONG>
<STRONG>glRectiv,</STRONG> <STRONG>glRectsv</STRONG> - draw a rectangle
<STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG>
void <STRONG>glRectd</STRONG>( GLdouble <EM>x1</EM>,
GLdouble <EM>y1</EM>,
GLdouble <EM>x2</EM>,
GLdouble <EM>y2</EM> )
void <STRONG>glRectf</STRONG>( GLfloat <EM>x1</EM>,
GLfloat <EM>y1</EM>,
GLfloat <EM>x2</EM>,
GLfloat <EM>y2</EM> )
void <STRONG>glRecti</STRONG>( GLint <EM>x1</EM>,
GLint <EM>y1</EM>,
GLint <EM>x2</EM>,
GLint <EM>y2</EM> )
void <STRONG>glRects</STRONG>( GLshort <EM>x1</EM>,
GLshort <EM>y1</EM>,
GLshort <EM>x2</EM>,
GLshort <EM>y2</EM> )
<STRONG>PARAMETERS</STRONG>
<EM>x1</EM>, <EM>y1</EM> Specify one vertex of a rectangle.
<EM>x2</EM>, <EM>y2</EM> Specify the opposite vertex of the rectangle.
<STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG>
void <STRONG>glRectdv</STRONG>( const GLdouble *<EM>v1</EM>,
const GLdouble *<EM>v2</EM> )
void <STRONG>glRectfv</STRONG>( const GLfloat *<EM>v1</EM>,
const GLfloat *<EM>v2</EM> )
void <STRONG>glRectiv</STRONG>( const GLint *<EM>v1</EM>,
const GLint *<EM>v2</EM> )
void <STRONG>glRectsv</STRONG>( const GLshort *<EM>v1</EM>,
const GLshort *<EM>v2</EM> )
<STRONG>PARAMETERS</STRONG>
<EM>v1</EM> Specifies a pointer to one vertex of a rectangle.
<EM>v2</EM> Specifies a pointer to the opposite vertex of the
rectangle.
<STRONG>DESCRIPTION</STRONG>
<STRONG>glRect</STRONG> supports efficient specification of rectangles as two
corner points. Each rectangle command takes four arguments,
organized either as two consecutive pairs of (<EM>x</EM>,<EM>y</EM>)
coordinates, or as two pointers to arrays, each containing
an (<EM>x</EM>,<EM>y</EM>) pair. The resulting rectangle is defined in the
<EM>z</EM>=0 plane.
<STRONG>glRect</STRONG>(<EM>x1</EM>, <EM>y1</EM>, <EM>x2</EM>, <EM>y2</EM>) is exactly equivalent to the
following sequence: glBegin(<STRONG>GL_POLYGON</STRONG>); glVertex2(<EM>x1</EM>, <EM>y1</EM>);
glVertex2(<EM>x2</EM>, <EM>y1</EM>); glVertex2(<EM>x2</EM>, <EM>y2</EM>); glVertex2(<EM>x1</EM>, <EM>y2</EM>);
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.
<STRONG>ERRORS</STRONG>
<STRONG>GL_INVALID_OPERATION</STRONG> is generated if <STRONG>glRect</STRONG> is executed
between the execution of <STRONG>glBegin</STRONG> and the corresponding
execution of <STRONG>glEnd</STRONG>.
<STRONG>SEE</STRONG> <STRONG>ALSO</STRONG>
<STRONG>glBegin</STRONG>, <STRONG>glVertex</STRONG>
</PRE>
</BODY>
</HTML>
