29 lines
772 B
ObjectPascal
29 lines
772 B
ObjectPascal
procedure DrawVerticalStripes(Image: TImage; PenWidth,Top,Bottom: integer);
|
|
{Draw vertical stripes across full width of image}
|
|
{Top/Bottom Control the position of the band of stripes}
|
|
{PenWidth controls width of the line drawn}
|
|
var X,X2,Y: integer;
|
|
begin
|
|
Image.Canvas.Pen.Width:=PenWidth;
|
|
for X:=0 to (Image.Width div PenWidth)-1 do
|
|
begin
|
|
if (X mod 2)=0 then Image.Canvas.Pen.Color:=clWhite
|
|
else Image.Canvas.Pen.Color:=clBlack;
|
|
X2:=X * PenWidth;
|
|
Image.Canvas.MoveTo(X2,Top);
|
|
Image.Canvas.LineTo(X2,Bottom);
|
|
end;
|
|
end;
|
|
|
|
procedure ShowVerticalStripes(Image: TImage);
|
|
{Draw all four bands of stripes}
|
|
var SHeight: integer;
|
|
var I: integer;
|
|
begin
|
|
SHeight:=Image.Height div 4;
|
|
for I:=0 to 4-1 do
|
|
begin
|
|
DrawVerticalStripes(Image,I+1,SHeight*I,SHeight*(I+1));
|
|
end;
|
|
end;
|