Intel® Fortran Compiler 17.0 Developer Guide and Reference
Graphics Subroutine: Sets the current fill mask to a new pattern.
USE IFQWIN
CALL SETFILLMASK (mask)
mask |
(Input) INTEGER(1). One-dimensional array of length 8. |
There are 8 bytes in mask, and each of the 8 bits in each byte represents a pixel, creating an 8x8 pattern. The first element (byte) of mask becomes the top 8 bits of the pattern, and the eighth element (byte) of mask becomes the bottom 8 bits.
During a fill operation, pixels with a bit value of 1 are set to the current graphics color, while pixels with a bit value of zero are set to the current background color. The current graphics color is set with SETCOLORRGB or SETCOLOR. The 8-byte mask is replicated over the entire fill area. If no fill mask is set (with SETFILLMASK), or if the mask is all ones, solid current color is used in fill operations.
The fill mask controls the fill pattern for graphics routines (FLOODFILLRGB, PIE, ELLIPSE, POLYGON, and RECTANGLE).
To change the current fill mask, determine the array of bytes that corresponds to the desired bit pattern and set the pattern with SETFILLMASK, as in the following example.
This program draws six rectangles, each with a different fill mask, as shown below.
! Build as QuickWin or Standard Graphics Ap.
USE IFQWIN
INTEGER(1), TARGET :: style1(8) &
/Z'18',Z'18',Z'18',Z'18',Z'18',Z'18',Z'18',Z'18'/
INTEGER(1), TARGET :: style2(8) &
/Z'08',Z'08',Z'08',Z'08',Z'08',Z'08',Z'08',Z'08'/
INTEGER(1), TARGET :: style3(8) &
/Z'18',Z'00',Z'18',Z'18',Z'18',Z'00',Z'18',Z'18'/
INTEGER(1), TARGET :: style4(8) &
/Z'00',Z'08',Z'00',Z'08',Z'08',Z'08',Z'08',Z'08'/
INTEGER(1), TARGET :: style5(8) &
/Z'18',Z'18',Z'00',Z'18',Z'18',Z'00',Z'18',Z'18'/
INTEGER(1), TARGET :: style6(8) &
/Z'08',Z'00',Z'08',Z'00',Z'08',Z'00',Z'08',Z'00'/
INTEGER(1) oldstyle(8) ! Placeholder for old style
INTEGER loop
INTEGER(1), POINTER :: ptr(:)
CALL GETFILLMASK( oldstyle )
! Make 6 rectangles, each with a different fill
DO loop = 1, 6
SELECT CASE (loop)
CASE (1)
ptr => style1
CASE (2)
ptr => style2
CASE (3)
ptr => style3
CASE (4)
ptr => style4
CASE (5)
ptr => style5
CASE (6)
ptr => style6
END SELECT
CALL SETFILLMASK( ptr)
status = RECTANGLE($GFILLINTERIOR,INT2(loop*40+5), &
INT2(90),INT2((loop+1)*40), INT2(110))
END DO
CALL SETFILLMASK( oldstyle ) ! Restore old style
READ (*,*) ! Wait for ENTER to be
! pressed
END
The following shows the output of this program.