?? bseffects.pas

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       Line^[x].r := r;
       Line^[x].g := g;
       Line^[x].b := b;
     end;
     ScanLines[y] := Line;
     kf1 := kf1 + Step;
     if kf1 > 1 then kf1 := 1;
   end;

  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.MorphGrad;
begin
  if Width >= Height
  then MorphHGrad(BMP, kf)
  else MorphVGrad(BMP, kf);
end;

procedure TbsEffectBmp.MorphLeftGrad;
var
  x, y, r, g, b: Integer;
  Line, L: PLine;
  kf1: Double;
  step: Double;
  f : Integer;
begin
  if (BMP.Width <> Width) or (BMP.Height <> Height) then Exit;

  GetMem(Line, Width * 3);

  f := Round(Width * kf);
  if f < 1 then f := 1;
  if f > Width - 1 then f := Width - 1;

  if f > 0
  then
    Step := 1 / f
  else
    Step := 1;

  for y := 0 to Height - 1 do
  begin
    GetScanLine(y,Line);
    L := BMP.ScanLines[y];
    kf1 := 0;
    for x := 0 to f do
    begin
      r := Round(Line^[x].r * kf1 + L^[x].r * (1 - kf1));
      g := Round(Line^[x].g * kf1 + L^[x].g * (1 - kf1));
      b := Round(Line^[x].b * kf1 + L^[x].b * (1 - kf1));
      CheckRGB(r, g, b);
      Line^[x].r := r;
      Line^[x].g := g;
      Line^[x].b := b;
      kf1 := kf1 + Step;
      if kf1 > 1 then kf1 := 1;
     end;
     ScanLines[y] := Line;
   end;

  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.MorphRightGrad;
var
  x, y, r, g, b: Integer;
  Line, L: PLine;
  kf1: Double;
  step: Double;
  f : Integer;
begin
  if (BMP.Width <> Width) or (BMP.Height <> Height) then Exit;

  GetMem(Line, Width * 3);

  f := Width - Round(Width * kf);
  if f < 0 then f := 0;
  if f > Width - 1 then f := Width - 1;

  if Width - f > 0
  then
    Step := 1 / (Width - f)
  else
    Step := 1;

  for y := 0 to Height - 1 do
  begin
    GetScanLine(y,Line);
    L := BMP.ScanLines[y];
    kf1 := 0;
    for x := Width - 1 downto f do
    begin
      r := Round(Line^[x].r * kf1 + L^[x].r * (1 - kf1));
      g := Round(Line^[x].g * kf1 + L^[x].g * (1 - kf1));
      b := Round(Line^[x].b * kf1 + L^[x].b * (1 - kf1));
      CheckRGB(r, g, b);
      Line^[x].r := r;
      Line^[x].g := g;
      Line^[x].b := b;
      kf1 := kf1 + Step;
      if kf1 > 1 then kf1 := 1;
     end;
     ScanLines[y] := Line;
   end;
  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.MorphPush(BMP: TbsEffectBMP; Kf: Double);
var
  x, y, x1: Integer;
  Line, L: PLine;
  f : Integer;
begin
  if (BMP.Width <> Width) or (BMP.Height <> Height) then Exit;

  GetMem(Line, Width * 3);

  f := Round(Width * kf);
  if f < 0
  then f := 0
  else if f > Width - 1 then f := Width - 1;

  for y := 0 to Height - 1 do
  begin
    GetScanLine(y,Line);
    L := BMP.ScanLines[y];
    for x := Width - 1 downto f do
    begin
      x1 := x - f - 1;
      if x1 < 0 then x1 := 0;
      Line^[x].r := Line^[x1].r;
      Line^[x].g := Line^[x1].g;
      Line^[x].b := Line^[x1].b;
     end;
     ScanLines[y] := Line;
   end;           

  for y := 0 to Height - 1 do
  begin
    GetScanLine(y,Line);
    L := BMP.ScanLines[y];
    x1 := Width - f - 1;
    if x1 < 0 then x1 := 0;
    for x := 0 to f do
    begin
      Line^[x].r := L^[x1].r;
      Line^[x].g := L^[x1].g;
      Line^[x].b := L^[x1].b;
      inc(x1);
      if x1 > Width - 1 then x1 := Width - 1;
    end;
    ScanLines[y] := Line;
  end;

  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.MorphLeftSlide;
var
  x, y, x1: Integer;
  Line, L: PLine;
  f : Integer;
begin
  if (BMP.Width <> Width) or (BMP.Height <> Height) then Exit;

  GetMem(Line, Width * 3);

  f := Round(Width * kf);
  if f < 1 then f := 1;
  if f > Width - 1 then f := Width - 1;
  for y := 0 to Height - 1 do
  begin
    GetScanLine(y,Line);
    L := BMP.ScanLines[y];
    x1 := Width - 1 - f;
    if x1 < 0 then x1 := 0;
    for x := 0 to f - 1 do
    begin
      inc(x1);
      if x1 > Width -1 then x1 := Width - 1;
      Line^[x].r := L^[x1].r;
      Line^[x].g := L^[x1].g;
      Line^[x].b := L^[x1].b;
    end;
    ScanLines[y] := Line;
  end;

  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.MorphRightSlide;
var
  x, y, x1: Integer;
  Line, L: PLine;
  f : Integer;
begin
  if (BMP.Width <> Width) or (BMP.Height <> Height) then Exit;

  GetMem(Line, Width * 3);

  f := Round(Width * kf);
  if f < 1 then f := 1;
  if f > Width - 1 then f := Width - 1;

  for y := 0 to Height - 1 do
  begin
    GetScanLine(y,Line);
    L := BMP.ScanLines[y];
    x1 := Width - 1 - f;
    if x1 < 0 then x1 := 0;
    for x := 0 to f - 1 do
    begin
      inc(x1);
      if x1 > Width -1 then x1 := Width - 1;
      Line^[x1].r := L^[x].r;
      Line^[x1].g := L^[x].g;
      Line^[x1].b := L^[x].b;
    end;
    ScanLines[y] := Line;
  end;

  FreeMem(Line, Width * 3);
end;

destructor TbsEffectBmp.Destroy;
begin
  DeleteObject(Handle);
  inherited;
end;

procedure TbsEffectBmp.ChangeBrightness(Kf: Double);
var
  x, y, r, g, b: Integer;
  Line: PLine;
begin
  if Kf < 0 then Kf := 0 else if Kf > 1 then Kf := 1;
  GetMem(Line, Width * 3);
  for y := 0 to Height - 1 do
  begin
    GetScanLine(y, Line);
    for x := 0 to Width - 1 do
    begin
      r := Round(Line^[x].r * (1 - Kf) + 255 * Kf);
      g := Round(Line^[x].g * (1 - Kf) + 255 * Kf);
      b := Round(Line^[x].b * (1 - Kf) + 255 * Kf);
      CheckRGB(r, g, b);
      Line^[x].r := r;
      Line^[x].g := g;
      Line^[x].b := b;
    end;
    ScanLines[y] := Line;
  end;
  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.Invert;
var
  x, y, r, g, b: Integer;
  Line: PLine;
begin
  GetMem(Line, Width * 3);
  for y := 0 to Height - 1 do
  begin
    GetScanLine(y, Line);
    for x := 0 to Width - 1 do
    begin
      r := not Line^[x].r;
      g := not Line^[x].g;
      b := not Line^[x].b;
      CheckRGB(r, g, b);
      Line^[x].r := r;
      Line^[x].g := g;
      Line^[x].b := b;
    end;
    ScanLines[y] := Line;
  end;
  FreeMem(Line, Width * 3);
end;


procedure TbsEffectBmp.ChangeDarkness(Kf: Double);
var
  x, y, r, g, b: Integer;
  Line: PLine;
begin
  if Kf < 0 then Kf := 0 else if Kf > 1 then Kf := 1;
  GetMem(Line, Width * 3);
  for y := 0 to Height - 1 do
  begin
    GetScanLine(y, Line);
    for x := 0 to Width - 1 do
    begin
      r := Round(Line^[x].r * (1 - Kf));
      g := Round(Line^[x].g * (1 - Kf));
      b := Round(Line^[x].b * (1 - Kf));
      CheckRGB(r, g, b);
      Line^[x].r := r;
      Line^[x].g := g;
      Line^[x].b := b;
    end;
    ScanLines[y] := Line;
  end;
  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.GrayScale;
var
  x, y: Integer;
  Line: PLine;
  Gray: Byte;
begin
  GetMem(Line, Width * 3);
  for y := 0 to Height - 1 do
  begin
    GetScanLine(y, Line);
    for x := 0 to Width - 1 do
    begin
      Gray := Round(Line^[x].r * 0.3 + Line^[x].g * 0.59 + Line^[x].b * 0.11);
      if Gray > 255 then Gray := 255 else if Gray < 0 then Gray := 0;
      Line^[x].r := Gray;
      Line^[x].g := Gray;
      Line^[x].b := Gray;
    end;
    ScanLines[y] := Line;
  end;
  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.SplitBlur(Amount: Integer);
var
  cx, x, y: Integer;
  L, L1, L2: PLine;
  Buf: array[0..3] of TFColor;
  Tmp: TFColor;
begin
  if Amount = 0 then Exit;
  for y := 0 to Height-1 do
  begin
    L := ScanLines[y];
    if y - Amount < 0
    then L1:=ScanLines[y]
    else L1:=ScanLines[y - Amount];
    if y + Amount < Height
    then L2:=ScanLines[y + Amount]
    else L2:=ScanLines[Height - y];
    for x := 0 to Width - 1 do
    begin
      if x - Amount < 0 then cx := x else cx := x - Amount;
      Buf[0] := L1[cx];
      Buf[1] := L2[cx];
      if x + Amount < Width then cx := x + Amount else cx := Width - x;
      Buf[2] := L1^[cx];
      Buf[3] := L2^[cx];
      Tmp.r := (Buf[0].r + Buf[1].r + Buf[2].r + Buf[3].r) div 4;
      Tmp.g := (Buf[0].g + Buf[1].g + Buf[2].g + Buf[3].g) div 4;
      Tmp.b := (Buf[0].b + Buf[1].b + Buf[2].b + Buf[3].b) div 4;
      L^[x] := Tmp;
    end;
  end;
end;

procedure TbsEffectBmp.Mosaic(ASize: Integer);
var
  x, y, i, j : Integer;
  L1, L2: PLine;
  r, g, b : Byte;
begin
  y := 0;
  repeat
    L1 := Scanlines[y];
    x := 0;
    repeat
      j := 1;
      repeat
      L2 := Scanlines[y];
      x := 0;
      repeat
        r := L1[x].r;
        g := L1[x].g;
        b := L1[x].b;
        i:=1;
       repeat
       L2[x].r := r;
       L2[x].g := g;
       L2[x].b := b;
       inc(x);
       inc(i);
       until (x >= Width) or (i > ASize);
      until x >= Width;
      inc(j);
      inc(y);
      until ( y >= Height) or (j > ASize);
    until (y >= Height) or (x >= Width);
  until y >= Height;
end;


procedure TbsEffectBmp.AddMonoNoise(Amount:Integer);
var
  x,y,r,g,b,z: Integer;
  Line: PLine;
begin
  GetMem(Line, Width * 3);
  for y := 0 to Height - 1 do
  begin
    GetScanLine(y,Line);
    for x:=0 to Width-1 do
    begin
      z := Random(Amount) - Amount div 2;
      r := Line^[x].r + z;
      g := Line^[x].g + z;
      b := Line^[x].b + z;
      CheckRGB(r, g, b);
      Line^[x].r := r;
      Line^[x].g := g;
      Line^[x].b := b;
    end;
    ScanLines[y] := Line;
  end;
  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.AddColorNoise(Amount:Integer);
var
  x,y,r,g,b: Integer;
  Line: PLine;
begin
  GetMem(Line, Width * 3);
  for y := 0 to Height - 1 do
  begin
    GetScanLine(y,Line);
    for x:=0 to Width-1 do
    begin
      r := Line^[x].r + (Random(Amount) - (Amount div 2));
      g := Line^[x].g + (Random(Amount) - (Amount div 2));
      b := Line^[x].b + (Random(Amount) - (Amount div 2));
      CheckRGB(r, g, b);
      Line^[x].r := r;
      Line^[x].g := g;
      Line^[x].b := b;
    end;
    ScanLines[y] := Line;
  end;
  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.Rotate90_1(Dst: TbsEffectBmp);
var
  x, y: Integer;
begin
  for y := 0 to Height - 1 do
  for x := 0 to Width - 1 do
    Dst.Pixels[y, Width - 1 - x] := Pixels[x, y];
end;

procedure TbsEffectBmp.Rotate90_2(Dst: TbsEffectBmp);
var
  x, y: Integer;
begin
  for y := 0 to Height - 1 do
  for x := 0 to Width - 1 do
    Dst.Pixels[Height - 1 - y, x] := Pixels[x, y];
end;

procedure TbsEffectBmp.FlipVert;
var
  x, y: Integer;
begin
  for y := 0 to Height - 1 do
  for x := 0 to Width - 1 do
    Dst.Pixels[x, Height - 1 - y] := Pixels[x, y];
end;

end.
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