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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