glRectd, glRectf, glRecti, glRects, glRectdv, glRectfv, glRectiv, glRectsv

These functions draw a rectangle.

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

One vertex of a rectangle.

x2, y2

The opposite vertex of the rectangle.

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

A pointer to one vertex of a rectangle.

v2

A pointer to the opposite vertex of the rectangle.

Remarks

The glRect function 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.

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

glBegin(GL_POLYGON);

glVertex2(x1, y1);

glVertex2(x2, y1);

glVertex2(x2, y2);

glVertex2(x1, y2);

glEnd( );

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

Error Codes

The following are the error codes generated and their conditions.

QuickInfo

  Windows NT: Use version 3.5 and later.
  Windows: Use Windows 95 and later.
  Windows CE: Unsupported.
  Header: Declared in gl.h.
  Import Library: Link with opengl32.lib.

See Also

glBegin, glEnd, glVertex