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| uses crt,graph;
type
k=object
color : word;
size:integer;
procedure init(const x1,y1,c1:word);
procedure draw(acolor:word);
procedure show;
procedure Hide;
procedure Moveto(dx, dy: integer);
procedure done(var x1,y1,c1:word);
end;
s=object(k)
c : word;
s:integer;
procedure draw(acolor:word);
end;
v=object(k)
c : word;
s:integer;
procedure draw(acolor:word);
end;
var
x,y,i,j,dx,dy,r,u,l,x1,y1: integer;
m,m1:char;
q,z:real;
c,c1:word;
k1:k;
s1:s;
v1:v;
procedure k.init;
begin
x:=x1;
y:=y1;
c:=c1;
end;
procedure k.draw;
var r,u:word;
begin r:=100;
u:=4;
setcolor(getbkcolor);
SetFillStyle (1,color);
moveto(round(r*cos((pi/2)/u))+x,-round(r*sin((pi/2)/u))+y);
for l:=0 to u do
begin
q:=r*cos((pi/2+2*pi*l)/u);
z:=r*sin((pi/2+2*pi*l)/u);
lineto(round(q)+x,-round(z)+y);
end;
{setcolor(getbkcolor);
line(x-30,y-30,x+30,y-30); line(x+30,y-30,x+30,y+30);
line(x+30,y+30,x-30,y+30); line(x-30,y+30,x-30,y-30);
setFillStyle(1,getbkcolor); }
end;
procedure k.show;
begin;
draw(red);
end;
procedure k.hide;
begin;
draw(getbkcolor);
end;
procedure k.moveto;
{var c: word; }
begin
hide;
if ((x+dx)>getmaxx) then begin if ((x+dx)<0) then begin
if ((y+dy)>getmaxx) then begin if ((y+dy)<0) then begin
x:=x+dx; y:=y+dy;
show; end; end;end;end
end;
procedure k.done;
begin x1:=x;
y1:=y;
c1:=c;
end;
procedure s.draw;
begin r:=100;
u:=6;
setcolor(getbkcolor);
SetFillStyle (1,color);
moveto(round(r*cos((pi/2)/u))+x,-round(r*sin((pi/2)/u))+y);
for l:=0 to u do
begin
q:=r*cos((pi/2+2*pi*l)/u);
z:=r*sin((pi/2+2*pi*l)/u);
lineto(round(q)+x,-round(z)+y);
end;
end;
procedure v.draw;
begin r:=100;
u:=8;
setcolor(getbkcolor);
SetFillStyle (1,color);
moveto(round(r*cos((pi/2)/u))+x,-round(r*sin((pi/2)/u))+y);
for l:=0 to u do
begin
q:=r*cos((pi/2+2*pi*l)/u);
z:=r*sin((pi/2+2*pi*l)/u);
lineto(round(q)+x,-round(z)+y);
end;
end;
BEGIN
i:=detect;
initgraph (i,j,' ');
c1:=(1);
x:=(Getmaxx div 2);
y:=Getmaxy div 2;
m1:=#0;
repeat
if keypressed then
begin
m:=readkey;
if m=#0 then m:=readkey;
case m of
#9: begin
k1.show;
end;
#45: begin
if u=4 then v1.show;
if u=6 then k1.show;
if u=8 then s1.show;
end;
#43: begin
if u=4 then s1.show;
if u=6 then v1.show;
if u=8 then k1.show;
end;
#80: begin
k1.moveto(0,5);
s1.moveto(0,5);
v1.moveto(0,5);
end;
#72:begin
k1.moveto (0,-5);
s1.moveto (0,-5);
v1.moveto (0,-5);
end;
#77:begin
k1.moveto(5,0) ;
s1.moveto(5,0) ;
v1.moveto(5,0);
end;
#75:begin
k1.moveto(-5,0);
s1.moveto(-5,0);
v1.moveto(-5,0);
end;
#27: exit;
end;
end;
m1:=m;
until m=#27;
closegraph;
END. |
(
