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| Program l_5;
uses crt,graph;
const dt=0.01;
t1=0; t2=2*pi;
var
c,x0,y0,h,w:word;
mx,my,r1,r2,y1,y2:real;
dr,tr:integer;
Procedure INdata(var r1,r2:real; var c:word);
begin
clrscr;
textcolor(7);
textbackground(black);
Writeln ('postroenie grafika funkchii');
Write ('vvedite kod sveta:');
Readln (c);
Writeln ('vvedite koific funcchii:');
Write('r1=');
readln(r1);
Write('r2=');
readln(r2);
end;
function f1(r1,t:real):real;
begin
f1:=r1*cos(t);
end;
function f2(r2,t:real):real;
begin
f2:=r2*sin(t);
end;
procedure masht(var mx,my,y1,y2:real);
var x,y,t,x1,x2:real;
begin
t:=t1;y1:=f1(r1,t1); y2:=y1;
x1:=f2(r2,t1);x2:=x1;
repeat
y:=f1(r1,t);
x:=f2(r2,t);
if y<y1 then y1:=y;
if y>y2 then y2:=y;
t:=t+dt;
until(t>t2);
w:=640-40;
h:=480-40;
my:=h/abs(y2-y1);
mx:=w/abs(t2-t1);
end;
procedure coordsystem;
var g,ym:integer;
j:string;x1,x2:real;
begin
x0:=20+round(abs(t1)*mx);
y0:=480-20-round(abs(y1)*my);
setbkcolor(white);
cleardevice;
setcolor(blue);
setlinestyle(solidln,0,normwidth);
line(10,y0,getMaxX-2,y0);
line(x0,2,x0,getMaxy-2);
moveto(x0,2); linerel(-2,5);
moveto(x0,2); linerel(2,5);
moveto (getMaxx-2,y0);linerel(-5,-2);
moveto (getMaxx-2,y0);linerel(-5,2);
outtextxy(x0-15,2,'y');
outtextxy(getmaxx-10,y0+3,'x');
outtextxy(x0+3,y0+3,'0');
g:=round(y2);
ym:=y0-round(g*my);
moveto(x0-5,ym); linerel(10,0);
str(g,j);
outtextxy(x0+10,ym-5,j);
g:=round(y1);
ym:=y0-round(g*my);
moveto(x0-5,ym); linerel(10,0);
str(g,j);
outtextxy(x0+10,ym-5,j);
g:=trunc(t2);
ym:=x0-round(g*mx);
moveto(getmaxx-20,y0-10); linerel(0,10);
str(g,j);
outtextxy(getmaxx-20,y0+3,j);
g:=round(t1);
ym:=x0-round(g*mx);
moveto(ym,y0-5); linerel(0,10);
str(g,j);
outtextxy(ym+3,y0+3,j);
outtextxy(445,470,'dla vihoda nagmite enter');
end;
procedure drawing;
var xe,ye:integer;
t,y,x:real;
begin
t:=t1;
repeat
y:=f1(r1,t);
x:=f2(r2,t);
ye:=y0-round(y*my);
xe:=x0+round(t*mx);
putpixel(xe,ye,c);
ye:=y0-round(x*my);
xe:=x0+round(t*mx);
putpixel(xe,ye,c);
t:=t+dt;
until t>=t2;
end;
begin
Indata(r1,r2,c);
masht(mx,my,y1,y2);
detectgraph(dr,tr);
initgraph(dr,tr,'c:\bp\bgi');
coordsystem;
drawing;
readln;
closegraph;
end. |
(
Сообщение было отмечено Dan))) как решение
