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FIBERGLS.PAS
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Pascal/Delphi Source File
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1988-09-02
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2KB
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53 lines
{--------------------------------------------------------------}
{ PsychedelicFiberglas }
{ }
{ by Jeff Duntemann }
{ Turbo Pascal V5.0 }
{ Last update 9/3/88 }
{ }
{ This program demonstrates palette-switching through the BGI. }
{ Children of the Sixties will understand the name. }
{ }
{ From the book, COMPLETE TURBO PASCAL 5.0 by Jeff Duntemann }
{ Scott, Foresman & Co. 1988 ISBN 0-673-38355-5 }
{--------------------------------------------------------------}
PROGRAM PsychedelicFiberglas;
USES Crt,Graph;
VAR
I,Color : Integer;
Palette : PaletteType;
GraphDriver : Integer;
GraphMode : Integer;
ErrorCode : Integer;
BEGIN
GraphDriver := Detect; { Let the BGI determine what board we're using }
DetectGraph(GraphDriver,GraphMode);
InitGraph(GraphDriver,GraphMode,'');
IF GraphResult <> 0 THEN
BEGIN
Writeln('>>Halted on graphics error: ',GraphErrorMsg(GraphResult));
Halt(2)
END;
Randomize;
GetPalette(Palette);
FOR Color := 0 TO 10000 DO
BEGIN
SetColor(Random(Palette.Size));
Line(Random(GetMaxX),Random(GetMaxY),Random(GetMaxX),Random(GetMaxY));
END;
REPEAT
REPEAT I := Random(Palette.Size) UNTIL I <> 0;
SetPalette(I,Random(Palette.Size));
UNTIL KeyPressed;
CloseGraph;
END.