FIX: FLOODFILL Fails to Fill to the Boundary Color (71184)
The information in this article applies to:
- Microsoft FORTRAN Compiler for MS-DOS 5.0
- Microsoft FORTRAN Compiler for MS-DOS 5.1
This article was previously published under Q71184 SYMPTOMS
Programs compiled with Microsoft FORTRAN version 5.0 or 5.1 for
MS-DOS that use the FLOODFILL graphics function may fail to fill an
area to the boundary color.
The FLOODFILL function may stop filling an area when it encounters the
fill color, instead of the boundary color.
RESOLUTION
To avoid this problem, remap the index of the fill color to a
different color index using the REMAPPALETTE function. This method
allows the FLOODFILL function to successfully fill over the existing
fill color, right to the edge of the boundary color.
STATUS
Microsoft has confirmed this to be a problem in Microsoft FORTRAN
versions 5.0 and 5.1 for MS-DOS. This problem was corrected in FORTRAN
PowerStation.
MORE INFORMATION
The following example program illustrates the problem:
INCLUDE 'FGRAPH.FI'
INCLUDE 'FGRAPH.FD'
INTEGER*2 dummy
dummy = setvideomode($MAXRESMODE)
dummy = setcolor(7) ! White for rectangle border
dummy = rectangle($GBORDER, 100, 100, 200, 200)
dummy = setcolor(2) ! Green to fill rectangle
read (*,*)
dummy = floodfill(120, 120, 7) ! Fill to White border
read (*,*)
dummy = setcolor(4) ! Red for 2nd rectangle border
dummy = rectangle($GBORDER, 125, 80, 175, 250)
dummy = setcolor(2) ! Green to fill 2nd rectangle
read (*,*)
dummy = floodfill(150, 90, 4) ! Fill to Red border
read (*,*)
dummy = setvideomode($DEFAULTMODE)
END
Remapping a different color index to the fill color before calling
FLOODFILL the second time will prevent the problem from occurring. The
following program illustrates this solution:
INCLUDE 'FGRAPH.FI'
INCLUDE 'FGRAPH.FD'
INTEGER*2 dummy
dummy = setvideomode($MAXRESMODE)
dummy = setcolor(7) ! White for rectangle border
dummy = rectangle($GBORDER, 100, 100, 200, 200)
dummy = setcolor(2) ! Green to fill rectangle
read (*,*)
dummy = floodfill(120, 120, 7) ! Fill to White border
read (*,*)
dummy = setcolor(4) ! Red for 2nd rectangle border
dummy = rectangle($GBORDER, 125, 80, 175, 250)
dummy = remappalette(3,$green) ! Remap color index 3 to green
dummy = setcolor(3) ! Green to fill 2nd rectangle
read (*,*)
dummy = floodfill(150, 90, 4) ! Fill to Red border
read (*,*)
dummy = setvideomode($DEFAULTMODE)
END
| Modification Type: | Major | Last Reviewed: | 9/30/2003 |
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| Keywords: | kbfix KB71184 |
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