clear

[16.git] / 16 / x_ / modex / DEMO06.PAS

diff --git a/16/x_/modex/DEMO06.PAS b/16/x_/modex/DEMO06.PAS
deleted file mode 100755 (executable)
index f26af06..0000000
--- a/16/x_/modex/DEMO06.PAS
+++ /dev/null
@@ -1,135 +0,0 @@
-(*\r
-    DEMO06 - Magnifying glass\r
-    (c) 1994 Alessandro Scotti\r
-*)\r
-uses Crt, Modex;\r
-\r
-const\r
-  R = 40;               (* Lens radius *)\r
-  K : real = 1.8;       (* Magnifying factor, less makes a stronger lens *)\r
-type\r
-  TLine   = array[ 0..319 ] of byte;\r
-  PLine   = ^TLine;\r
-  TScreen = array[ 0..239 ] of PLine;\r
-var\r
-  VScreen: TScreen;                             (* Virtual screen *)\r
-  BallX  : array[ 0..R, 0..R ] of integer;\r
-  BallY  : array[ 0..R, 0..R ] of integer;\r
-  Sprite : array[ -R..R, -R..R ] of byte;\r
-  Page   : word;\r
-\r
-(* Returns "lens-view" coordinates of X,Y *)\r
-procedure GetCoords( var X, Y: integer );\r
-var\r
-  LR, Z, SinA, SinB, TgB, Q: real;\r
-begin\r
-  LR := Sqrt( X*X + Y*Y );\r
-  if( LR = 0 ) then Exit;\r
-  if( LR < R ) then begin\r
-    Z := Sqrt( R*R - LR*LR );\r
-    SinA := LR / R;\r
-    SinB := SinA / K;\r
-    TgB := SinB / Sqrt( 1-SinB*SinB );\r
-    Q := LR - TgB*Z;\r
-    X := Round( X * ( Q/LR ) );\r
-    Y := Round( Y * ( Q/LR ) );\r
-  end;\r
-end;\r
-\r
-procedure Init;\r
-var\r
-  F      : file;\r
-  Palette: array[ 0..767 ] of record R, G, B: byte; end;\r
-  X, Y,\r
-  X2, Y2 : integer;\r
-begin\r
-  (* Load background image *)\r
-  Assign( F, 'demo06.dat' );\r
-  Reset( F, 1 );\r
-  BlockRead( F, Palette, 768 );\r
-  mxSetPalette( @Palette, 0, 256 );\r
-  for Y:=0 to 239 do begin\r
-    New( VScreen[Y] );\r
-    BlockRead( F, VScreen[Y]^, 320 );\r
-    mxPutImage( VScreen[Y], 0, 480+Y, 320, 1, OP_MOVE );\r
-  end;\r
-  Close( F );\r
-  (* Build lens *)\r
-  for X:=0 to R do begin\r
-    for Y:=0 to R do begin\r
-      X2 := X;\r
-      Y2 := Y;\r
-      GetCoords( X2, Y2 );\r
-      BallX[X, Y] := X2;\r
-      BallY[X, Y] := Y2;\r
-    end;\r
-  end;\r
-end;\r
-\r
-procedure PutLens( OX, OY: integer );\r
-var\r
-  X, Y: integer;\r
-begin\r
-  for X:=0 to R do begin\r
-    for Y:=0 to R do begin\r
-      Sprite[Y][X] := VScreen[ OY+BallY[X,Y] ]^[ OX+BallX[X,Y] ];\r
-      Sprite[Y][-X] := VScreen[ OY+BallY[X,Y] ]^[ OX-BallX[X,Y] ];\r
-      Sprite[-Y][X] := VScreen[ OY-BallY[X,Y] ]^[ OX+BallX[X,Y] ];\r
-      Sprite[-Y][-X] := VScreen[ OY-BallY[X,Y] ]^[ OX-BallX[X,Y] ];\r
-    end;\r
-  end;\r
-  (* Draw the sprite *)\r
-  mxPutImage( @Sprite, OX-R, OY-R+Page, 2*R+1, 2*R+1, OP_MOVE );\r
-end;\r
-\r
-function Delta: integer;\r
-begin\r
-  Delta := Random(3)+2;\r
-end;\r
-\r
-procedure Check( Cond: boolean; var Coord, DeltaC: integer; NewCoord, Sign: integer );\r
-begin\r
-  if( Cond ) then begin\r
-    Coord := NewCoord;\r
-    DeltaC := Sign*Delta;\r
-  end;\r
-end;\r
-\r
-var\r
-  X, Y, DX, DY: integer;\r
-  C: char;\r
-begin\r
-  mxInit;\r
-  mxSetMode( MX_320x240 );\r
-  Init;\r
-  Page := 240;\r
-  X := R;\r
-  Y := R;\r
-  Randomize;\r
-  DX := Delta;\r
-  DY := Delta;\r
-\r
-  (* Main loop *)\r
-  repeat\r
-    (* Update video *)\r
-    mxBitBlt( 0, 480, 320, 240, 0, Page );\r
-    PutLens( X, Y );\r
-    mxCircle( X, Page+Y, R, 0 );\r
-    (* Update lens coordinates *)\r
-    Inc( X, DX );\r
-    Check( X+R >= 319, X, DX, 319-R, -1 );\r
-    Check( X <= R, X, DX, R, +1 );\r
-    Inc( Y, DY );\r
-    Check( Y+R >= 239, Y, DY, 239-R, -1 );\r
-    Check( Y <= R, Y, DY, R, +1 );\r
-    (* Flip pages: double buffering, avoid wait for display *)\r
-    case Page of\r
-      0  : begin PortW[$3D4] := $000C; Page := 240; end;\r
-      240: begin PortW[$3D4] := $4B0C; Page := 0; end;\r
-    end;\r
-    mxWaitRetrace; (* Wait for hidden page to show *)\r
-  until( KeyPressed );\r
-\r
-  mxSetMode( MX_TEXT );\r
-  mxTerm;\r
-end.\r