Initial commit of 1992 raytracing code
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commit
3f46e7dd82
42 changed files with 8483 additions and 0 deletions
291
turbo-pascal/ray12.pas
Normal file
291
turbo-pascal/ray12.pas
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program mmmmmmmmmmmmm;
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{$X+}
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uses Crt,Vga13h,RayShade;
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type
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TgaHeader = record { 18 bytes total }
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who_knows: array[1..12] of Byte;
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Width: Word;
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Height: Word;
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BitsPerPixel: Byte;
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who_knows2: Byte;
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end;
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const
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DefaultHeader: TgaHeader = (
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who_knows: (0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0);
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Width: 320;
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Height: 200;
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BitsPerPixel: 24;
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who_knows2: 32
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);
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var
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tf: File of Byte;
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tff: File absolute tf;
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procedure StartTga(s: String);
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begin
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Assign(tf,s);
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Rewrite(tf);
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BlockWrite(tff,DefaultHeader,18);
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end;
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procedure EndTga;
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begin
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Close(tf);
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end;
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procedure TgaDot(r,g,b: Integer);
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begin
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if r > 255 then r := 255;
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if g > 255 then g := 255;
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if b > 255 then b := 255;
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if r < 0 then r := 0;
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if g < 0 then g := 0;
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if b < 0 then b := 0;
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Write(tf,Byte(b),Byte(g),Byte(r));
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end;
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{ r,g,b:0-255 }
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function Rgb(r,g,b: Integer): Integer;
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begin
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if r > 255 then r := 255;
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if g > 255 then g := 255;
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if b > 255 then b := 255;
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Rgb := (b shr 6) or ((g shr 3) and $1c) or (r and $e0);
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end;
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procedure RgbDot(x,y,r,g,b: Integer);
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var
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r1,g1,b1,r2,g2,b2,c1,c2: Integer;
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begin
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if r > 255 then r := 255;
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if g > 255 then g := 255;
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if b > 255 then b := 255;
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if r < 0 then r := 0;
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if g < 0 then g := 0;
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if b < 0 then b := 0;
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r1 := r and $e0; g1 := g and $e0; b1 := b and $c0;
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r2 := r1 + (r mod 32)+16;
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g2 := g1 + (g mod 32)+16;
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b2 := b1 + (b mod 64)+32;
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c1 := Rgb(r1,g1,b1); c2 := Rgb(r2,g2,b2);
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if (x mod 2) = (y mod 2) then PutPixel(x,y,c1) else PutPixel(x,y,c2);
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end;
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procedure SetUpRgb;
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var
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Clrs: array[0..255,0..2] of Byte;
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i: Integer;
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begin
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for i := 0 to 255 do begin
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Clrs[i,0] := (i and $e0) shr 2;
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Clrs[i,1] := (i and $1c) shl 1;
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Clrs[i,2] := (i and 3) shl 4;
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case Clrs[i,2] of
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15..31: Inc(Clrs[i,2],4);
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32..63: Inc(Clrs[i,2],8);
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end;
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end;
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SetColorBlock(0,256,Clrs);
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end;
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procedure Save(var u: Universe; st: String);
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var
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x,y: Integer;
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c: LongInt;
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r,g,b: Integer;
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begin
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StartTga(st);
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x := 0;
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for y := 0 to u.Height-1 do
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for x := 0 to u.Width-1 do begin
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c := u.TracePoint(x,y);
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r := (c and $ff0000) shr 16;
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g := (c and $ff00) shr 8;
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b := c and $ff;
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RgbDot(x,u.Height-1-y,r,g,b);
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TgaDot(r,g,b);
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end;
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EndTga;
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end;
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procedure Draw(var u: Universe);
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var
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x,y: Integer;
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c: LongInt;
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begin
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x := 0;
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while (x < u.Width) and (not KeyPressed) do begin
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for y := 0 to u.Height-1 do begin
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c := u.TracePoint(x,u.Height-1-y);
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if c <> 0 then
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RgbDot(x,y,(c and $ff0000) shr 16,(c and $ff00) shr 8,c and $ff);
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end;
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Inc(x);
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end;
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end;
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procedure Qwik(var u: Universe);
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var
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x,y: Integer;
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c: LongInt;
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r,g,b: Byte;
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begin
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x := 0;
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while (x < (u.Width div 2)) and (not KeyPressed) do begin
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for y := 0 to (u.Height div 2)-1 do begin
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c := u.TracePoint(x*2,u.Height-1-(y*2));
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if c <> 0 then begin
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r := (c and $ff0000) shr 16;
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g := (c and $ff00) shr 8;
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b := c and $ff;
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RgbDot(x*2,y*2,r,g,b); RgbDot(x*2+1,y*2,r,g,b);
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RgbDot(x*2+1,y*2+1,r,g,b); RgbDot(x*2,y*2+1,r,g,b);
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end;
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end;
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Inc(x);
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end;
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end;
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procedure Zoom(var u: Universe);
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var
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x,y,i,j: Integer;
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c: LongInt;
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r,g,b: Byte;
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begin
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x := 0;
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while (x < (u.Width div 4)) and (not KeyPressed) do begin
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for y := 0 to (u.Height div 4)-1 do begin
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c := u.TracePoint(x*4,u.Height-1-(y*4));
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if c <> 0 then begin
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r := (c and $ff0000) shr 16;
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g := (c and $ff00) shr 8;
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b := c and $ff;
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for i := 0 to 3 do
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for j := 0 to 3 do
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RgbDot(x*4+i,y*4+j,r,g,b);
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end;
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end;
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Inc(x);
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end;
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end;
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procedure Beep;
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begin
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Sound(220); { Beep }
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Delay(200); { For 200 ms }
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NoSound; { Relief! }
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end;
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type
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Plane1 = object(Plane)
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cr,cg,cb: Integer;
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constructor Init(x, y, z, vx, vy, vz: real; r,g,b: Integer);
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function GetColor(aray: Ray; time: Real): LongInt; virtual;
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end;
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Sphere1 = object(Sphere)
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cr,cg,cb: Integer;
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constructor Init(x, y, z, r: real; rr,g,b: Integer);
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function GetColor(aray: Ray; time: Real): LongInt; virtual;
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end;
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Sphere2 = object(Sphere)
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function GetColor(aray: Ray; time: Real): LongInt; virtual;
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end;
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function Sphere2.GetColor(aray: Ray; time: Real): LongInt;
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var
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r: Ray;
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c,c2: LongInt;
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cc: record b,g,r: Byte end absolute c;
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cc2: record b,g,r: Byte end absolute c2;
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begin
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ReflectRay(aray,time,r);
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c := Owner^.RayColor(r);
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c2 := Shade(aray,time,GetRgb(64,64,64));
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GetColor := GetRgb(cc.r-64+cc2.r,cc.g-64+cc2.g,cc.b-64+cc2.b);
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end;
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constructor Sphere1.Init(x, y, z, r: real; rr,g,b: Integer);
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begin
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Sphere.Init(x,y,z,r);
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cr := rr; cg := g; cb := b;
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end;
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function Sphere1.GetColor(aray: Ray; time: Real): LongInt;
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begin
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GetColor := Shade(aray,time,GetRgb(cr,cg,cb));
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end;
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constructor Plane1.Init(x, y, z, vx, vy, vz: real; r,g,b: Integer);
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begin
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Plane.Init(x,y,z,vx,vy,vz);
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cr := r; cg := g; cb := b;
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end;
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function Plane1.GetColor(aray: Ray; time: Real): LongInt;
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begin
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GetColor := Shade(aray,time,GetRgb(cr,cg,cb));
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end;
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procedure TraceIt;
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var
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u: Universe;
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l1,l2,l3,l4,l5,l6: LightSource;
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p1,p2,p3,p4,p5,p6: Plane1;
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s1,s2,s3,s4,s5,s6: Sphere1;
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ss1,ss2: Sphere2;
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begin
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u.Init(320,200, 32,32,32);
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l1.Init(14.9,7.9,49.9, 1024,1024,1024);
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l2.Init(-14.9,7.9,49.9, 1024,1024,1024);
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l3.Init(0,7.9,49.9, 1024,1024,1024);
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l4.Init(-14.9,7.9,35, 1024,1024,1024);
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l5.Init(14.9,7.9,35, 1024,1024,1024);
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l6.Init(0,7.9,35, 1024,1024,1024);
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p1.Init(0,-8,0, 0,1,0, 192,192,192);
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p2.Init(0,8,0, 0,-1,0, 192,192,192);
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p3.Init(0,0,50, 0,0,-1, 192,0,0);
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p4.Init(0,0,-10, 0,0,1, 192,0,0);
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p5.Init(-15,0,0, 1,0,0, 0,192,0);
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p6.Init(15,0,0, -1,0,0, 0,192,0);
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s1.Init(-8,-6,40,2, 192,0,0);
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s2.Init(-4,-6,40,2, 0,192,0);
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s3.Init(-6,-6,36.4,2, 0,0,192);
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s4.Init(-6,-2.8,38.8,2, 192,192,192);
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ss1.Init(-15,-8,50,5);
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ss2.Init(15,-8,50,5);
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u.Insert(@ss1);
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u.Insert(@ss2);
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u.Insert(@s1);
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u.Insert(@s2);
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u.Insert(@s3);
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u.Insert(@s4);
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u.Insert(@p1);
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u.Insert(@p2);
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u.Insert(@p3);
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u.Insert(@p4);
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u.Insert(@p5);
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u.Insert(@p6);
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u.InsertLight(@l1);
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u.InsertLight(@l2);
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u.InsertLight(@l3);
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u.InsertLight(@l4);
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u.InsertLight(@l5);
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u.InsertLight(@l6);
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{Zoom(u);}
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Save(u,'brion6.tga');
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Beep;
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u.DeleteAll;
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u.Done;
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end;
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begin
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Set13h;
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SetUpRgb;
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TraceIt;
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ReadKey;
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BiosMode(3);
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end.
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