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demo.bas
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BASIC Source File
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1990-12-09
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7KB
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218 lines
' +----------------------------------------------------------------------+
' | |
' | GRAFWIZ Copyright (c) 1990 Thomas G. Hanlin III |
' | |
' | The Graphics Wizard's Library for BASIC |
' | |
' +----------------------------------------------------------------------+
REM $INCLUDE: 'grafwiz.bi'
DEFINT A-Z
DEF FNR (X) = INT(RND * X)
RANDOMIZE TIMER
GetDisplay Adapter, Mono
IF Adapter < 3 THEN
PRINT "Sorry, but you must have a CGA, EGA or VGA display active to run this demo."
END
END IF
G1Mode 1 ' CGA 320x200 mode
G1PaletteA 0 ' Green, Red, Yellow palette
BFont 1
G1Color 1, 0
G1Banner "GRAFWIZ", 0, 0, 3, 2
BFont 0
G1Color 3, 0
G1Banner "Copyright (c)1990", 179, 5, 1, 1
G1Banner "Thomas G. Hanlin", 182, 15, 1, 1
BFont 2
G1Color 2, 0
G1Banner "This is the Graphics Wizard's Library.", 0, 40, 1, 1
BFont 1
G1Color 1, 0
G1Banner "Flexible text handling is a natural", 0, 68, 1, 1
G1Banner "aspect of graphics modes. The GRAFWIZ", 0, 82, 1, 1
G1Banner "library takes full advantage of that,", 0, 96, 1, 1
G1Banner "with a selection of fonts and fast", 0, 110, 1, 1
G1Banner "full-color text support.", 0, 124, 1, 1
BFont 0
G1Color 3, 0
G1Banner "This is CGA mode SCREEN 1, by the way.", 0, 150, 1, 1
BFont 2
G1Color 2, 0
G1Banner "Now let's see some graphics!", 0, 170, 1, 1
G1Locate 25, 14
G1Color 2, 3
G1Write "Press a key"
DO
LOOP WHILE LEN(INKEY$)
DO
ky$ = INKEY$
LOOP UNTIL LEN(ky$)
IF ky$ = CHR$(27) THEN GOTO Done
G1Color 0, 0
G1Box 0, 30, 319, 189, 1
G1Color 2, 0
G1Box 0, 26, 319, 188, 0
G1Color 1, 0
G1Locate 23, 2
G1Write "Dots, Lines, Boxes, Ellipses..."
FOR Dot = 1 TO 200
G1Color FNR(3) + 1, 0
G1Plot FNR(316) + 2, FNR(140) + 28
NEXT
FOR Lin = 1 TO 10
G1Color FNR(3) + 1, 0
G1Line FNR(316) + 2, FNR(140) + 28, FNR(315) + 3, FNR(139) + 29
NEXT
FOR Box = 1 TO 10
G1Color FNR(3) + 1, 0
X = FNR(250) + 2
Y = FNR(112) + 28
G1Box X, Y, X + FNR(60) + 1, Y + FNR(25) + 1, FNR(2)
NEXT
FOR Ellipse = 1 TO 10
G1Color FNR(3) + 1, 0
X = FNR(215) + 40
Y = FNR(85) + 60
G1Ellipse X, Y, FNR(25) + 5, FNR(20) + 5
NEXT
DO
LOOP WHILE LEN(INKEY$)
DO
ky$ = INKEY$
LOOP UNTIL LEN(ky$)
IF ky$ = CHR$(27) THEN GOTO Done
G1Color 0, 0
G1Box 1, 27, 318, 187, 1
G1Color 1, 0
G1Locate 23, 2
G1Write "But why stop at the usual?"
FOR Poly = 1 TO 12
G1Color FNR(3) + 1, 0
X = FNR(212) + 40
Y = FNR(90) + 60
G1Polygon X, Y, FNR(25) + 5, FNR(6) + 3, 3.14159 * RND
NEXT
DO
LOOP WHILE LEN(INKEY$)
DO
ky$ = INKEY$
LOOP UNTIL LEN(ky$)
IF ky$ = CHR$(27) THEN GOTO Done
G2Mode 1 ' CGA 640x200 mode
IF Adapter = 3 THEN ' if CGA...
G1Border 1 ' set foreground color to blue
END IF
G2Locate 1, 1
G2Color 1, 0
G2WriteLn "There are a few additional routines of interest which are designed to work"
G2WriteLn "only in SCREEN 2 mode at this time. These are the picture readers, which"
G2WriteLn "allow you to read in .MAC and .PCX pictures into a GET/PUT image. Here's"
G2WriteLn "a sample from DEMO.PCX:"
REDIM Image(1)
G2LoadPCX "DEMO.PCX", Image(), ErrCode
G2Put 40, 40, Image()
G2Locate 15, 1
G2WriteLn "Of course, that's not the end of it! There are many other routines that"
G2WriteLn "are not included in this demonstration. One of 'em in particular which you"
G2WriteLn "may like is a routine to print out a screen (almost any display mode) to"
G2WriteLn "any Epson-compatible printer. Another allows you to detect what kind of"
G2WriteLn "display adapter is attached and whether the display is color or monochrome."
G2WriteLn ""
G2WriteLn "See GRAFWIZ.DOC for more details."
G2Locate 25, 33
G2Color 0, 1
G2Write "Press any key"
IF Adapter = 4 THEN ' if EGA...
DO
LOOP WHILE LEN(INKEY$)
DO
ky$ = INKEY$
LOOP UNTIL LEN(ky$)
IF ky$ = CHR$(27) THEN GOTO Done
G7Mode 1 ' ...put into low-res EGA mode
G7Color 4, 2
G7WriteLn "Ah, I see you have an EGA! Of course,"
G7Color 0, 3
G7WriteLn "GRAFWIZ supports the various EGA modes"
G7Color 7, 1
G7WriteLn "as well as the Hercules, CGA and VGA."
FOR Y = 0 TO 31
G7Color Y AND 15, 0
G7Box Y, Y + 64, 319 - Y, (64 - Y) + 120, (Y = 100)
IF Y > 15 THEN
G7Polygon Y * 15 - 194, 112, 5, FNR(6) + 3, .75 * 3.141593
G7Color ((Y XOR 15) AND 15), 0
G7Polygon Y * 15 - 194, 136, 5, FNR(6) + 3, 0
END IF
NEXT
G7Locate 25, 14
G7Color 15, 4
G7Write "Press any key"
ELSEIF Adapter = 6 THEN ' if VGA...
DO
LOOP WHILE LEN(INKEY$)
DO
ky$ = INKEY$
LOOP UNTIL LEN(ky$)
IF ky$ = CHR$(27) THEN GOTO Done
G13Mode 1 ' ...put into low-res VGA mode
G13Color 4, 2
G13WriteLn "Ah, I see you have a VGA! Of course,"
G13Color 0, 3
G13WriteLn "GRAFWIZ supports the various VGA modes"
G13Color 7, 1
G13WriteLn "as well as Hercules, CGA and EGA."
FOR Y = 0 TO 31
G13Color Y + 16, 0
G13Box Y, Y + 64, 319 - Y, (64 - Y) + 120, (Y = 100)
IF Y > 15 THEN
G13Polygon Y * 15 - 194, 112, 5, FNR(6) + 3, .75 * 3.141593
G13Color 64 - Y, 0
G13Polygon Y * 15 - 194, 136, 5, FNR(6) + 3, 0
END IF
NEXT
G13Locate 25, 14
G13Color 15, 4
G13Write "Press any key"
END IF
DO
LOOP WHILE LEN(INKEY$)
DO
ky$ = INKEY$
LOOP UNTIL LEN(ky$)
IF ky$ = CHR$(27) THEN GOTO Done
Done:
G1Mode 0 ' restore text mode