Graphic Viewports

The following procedures can be used to configure viewports within a window. A viewport is useful for retricting graphics operations to a certain region within a window. By default, the viewport is the entire window.

clearviewport

C void clearviewport ( )
Fortran subroutine clearviewport ( )

Description

Clears the current viewport, filling the area with the background color

getviewsettings

C void getviewsettings ( viewport )
Fortran subroutine getviewsettings ( viewport )

Description

Retrieves the current viewport settings.

Parameters

Parameter	C Type	Fortran Type	Description
viewport	viewporttype *	type(viewporttype), intent(out)	Pointer to the structure to fill with the viewport details

resetviewport

C void resetviewport ( )
Fortran subroutine resetviewport ( )

Description

Resets the viewport to include the entire current window

setviewport

C void setviewport ( left, top, right, bottom, clip )
Fortran subroutine setviewport ( left, top, right, bottom, clip )

Description

Configures the current viewport within the current window. Drawing can be clipped to be within the viewport if clip is set to 1.

Parameters

Parameter	C Type	Fortran Type	Description
left	int	integer	Leftmost horizontal position of the viewport
top	int	integer	topmost vertical position of the viewport
right	int	integer	Rightmost horizontal position of the viewport
bottom	int	integer	Bottommost vertical position of the viewport
clip	int	logical	If set to 1 or .TRUE., clips, or restricts, graphic operations to the viewport