SETVIEWPORT (W*S)

Graphics Subroutine: Redefines the graphics viewport by defining a clipping region in the same manner as SETCLIPRGN and then setting the viewport-coordinate origin to the upper-left corner of the region.

Module

USE IFQWIN

CALL SETVIEWPORT (x1,y1,x2,y2)

x1, y1	(Input) INTEGER(2). Physical coordinates for upper-left corner of viewport.
x2, y2	(Input) INTEGER(2). Physical coordinates for lower-right corner of viewport.

The physical coordinates (x1, y1) and (x2, y2) are the upper-left and lower-right corners of the rectangular clipping region. Any window transformation done with the SETWINDOW function is relative to the viewport, not the entire screen.

Example

 USE IFQWIN
 INTEGER(2) upx, upy
 INTEGER(2) downx, downy

 upx = 0
 upy = 30
 downx= 250
 downy = 100
 CALL SETVIEWPORT(upx, upy, downx, downy)

SETVIEWPORT (W*S)

Module

Example

See Also