1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
40:
41:
42:
43:
44:
45:
46:
47:
48:
49:
50:
51:
52:
53:
| procedure TForm1.Image1MouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
begin
if button=mbleft then
begin
n:=n+1;
xp[n]:=x;
yp[n]:=y;
image1.Canvas.Pen.Color:=clgreen;
image1.Canvas.rectangle(x-3,y-3,x+3,y+3);
if n>1 then
begin
image1.Canvas. MoveTo(xp[n-1],yp[n-1]);
image1.Canvas.LineTo(xp[n],yp[n]);
if ssalt in shift then
begin
image1.canvas.LineTo(xp[1],yp[1]);
end;
end;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
i,p: Integer;
weitester: Integer;
Distanz: Real;
begin
if n>1 then
begin
weitester:=0;
Distanz:=0;
for i:=2 to n do
begin
if sqrt(sqr(xp[1]-xp[i])+(sqr(yp[1]-yp[i])))>Distanz then
begin
weitester:=i;
p:=i;
Distanz:=sqrt(sqr(xp[1]-xp[i])+(sqr(yp[1]-yp[i])));
end;
label2.Caption:=inttostr(p);
end;
image1.Canvas.Pen.Color:=clRed;
image1.Canvas.MoveTo(xp[1],yp[1]);
image1.Canvas.LineTo(xp[weitester],yp[weitester]);
end
end;
end.
Gruß Annika |