procedure LinienFettierer(Image: TBitmap; Background: TColor; Size: Integer);
var
x, y, x2, y2, x3, y3, R, G, B, P: Integer;
C: TColor;
Temp: TBitmap;
Mask:
Array of Array of Boolean;
begin
SetLength(Mask, Size, Size);
for x := 0
to Size - 1
do
for y := 0
to Size - 1
do
Mask[x, y] := True;
//(x - Size div 2)
Temp := TBitmap.Create;
try
Temp.Width := Image.Width + Size - 1;
Temp.Height := Image.Height + Size - 1;
for x := 0
to Temp.Width - 1
do
for y := 0
to Temp.Height - 1
do
begin
R := 0; G := 0; B := 0; P := 0;
for x2 := 0
to Size - 1
do
begin
x3 := x - Size
div 2 + x2;
if (x3 >= 0)
and (x3 < Image.Width)
then
for y2 := 0
to Size - 1
do
begin
y3 := y - Size
div 2 + y2;
if (y3 >= 0)
and (y3 < Image.Height)
and Mask[x2, y2]
then
begin
C := Image.Canvas.Pixels[x3, y3];
if C <> Background
then
begin
Inc(R, integer(C));
Inc(G, integer(C
shr 8));
Inc(B, integer(C
shr 16));
Inc(P);
end;
end;
end;
end;
if P <> 0
then
Temp.Canvas.Pixels[x, y] := Word(integer(R
div P)+integer((G
shr 8)
div P)+integer((B
shr 16)
div P))
//RGB(R div P, G div P, B div P)
else
Temp.Canvas.Pixels[x, y] := Background;
end;
Image.Width := Temp.Width;
Image.Height := Temp.Height;
Image.Canvas.Draw(0, 0, Temp);
finally
Temp.Free;
end;
end;