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EXFOR.ARJ
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12-05.FOR
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1995-01-20
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$INCLUDE: 'C:\FG\FASTGRAF.FI'
PROGRAM MAIN
INTEGER VISUAL, HIDDEN
PARAMETER (VISUAL=0)
PARAMETER (HIDDEN=1)
INTEGER NEW_MODE, OLD_MODE
INTEGER FRAME, OFFSET
INTEGER I
INTEGER STATUS
INTEGER FG_ALLOCATE, FG_BESTMODE, FG_FREEPAGE, FG_GETMODE
C initialize the video environment
NEW_MODE = FG_BESTMODE(320,200,2)
IF (NEW_MODE .LT. 0 .OR. NEW_MODE .EQ. 12) THEN
STOP 'This program requires a 320 x 200 color graphics mode.'
END IF
OLD_MODE = FG_GETMODE()
CALL FG_SETMODE(NEW_MODE)
STATUS = FG_ALLOCATE(HIDDEN)
C draw the background in the upper left corner
CALL FG_SETPAGE(HIDDEN)
CALL FG_SETCOLOR(1)
CALL FG_RECT(0,95,0,49)
CALL FG_SETCOLOR(15)
CALL FG_MOVE(48,25)
CALL FG_ELLIPSE(20,20)
C copy it to the center of the visual page
CALL FG_TRANSFER(0,95,0,49,112,124,HIDDEN,VISUAL)
C slide the object across the background three times
CALL FG_SETCOLOR(10)
DO 10 I = 0,35
FRAME = MOD(I,12)
OFFSET = 10 * FRAME - 10
CALL FG_TRANSFER(0,95,20,29,112,105,HIDDEN,HIDDEN)
CALL FG_RECT(112+OFFSET,131+OFFSET,96,105)
CALL FG_TRANSFER(112,207,96,105,112,105,HIDDEN,VISUAL)
CALL FG_WAITFOR(2)
10 CONTINUE
C restore the original video mode and return to DOS
STATUS = FG_FREEPAGE(HIDDEN)
CALL FG_SETMODE(OLD_MODE)
CALL FG_RESET
STOP ' '
END