Вращение обьекта Опции

[Анна]

Вот код, почему-то перерисовывает как попало.

uses crt,graph;
type matrix=array [1..4,1..4] of integer;
     vector=array [1..4] of integer;
     Point=array [1..2] of integer;
var i,j,c:integer;
    matr,matr_1,matrixX:matrix;
    vect_1,vect_2,vect_3,vect_4,vect_5:vector;
    p1,p2,p3,p4:point;

procedure vect_matr(vect:vector;matr:matrix);
begin
 for i:=1 to 4 do
  begin
   for j:=1 to 4 do
    begin
     vect_5[i]:=vect_5[i]+vect[j]*matr[i,j];
    end;
  end;
end;

procedure Risunok;
Var Gd,Gm:Integer;
Begin
 Gd:=Detect;
 InitGraph(Gd,Gm,'C:\BP\BGI');
 If GraphResult <> grOk Then Halt(1);

 p1[1]:=100;
 p1[2]:=100;

 p2[1]:=300;
 p2[2]:=100;

 p3[1]:=300;
 p3[2]:=300;

 p4[1]:=100;
 p4[2]:=300;

 line(p1[1],p1[2],p2[1],p2[2]);
 line(p2[1],p2[2],p3[1],p3[2]);
 line(p3[1],p3[2],p4[1],p4[2]);
 line(p4[1],p4[2],p1[1],p1[2]);

 readln;

 vect_1[1]:=p1[1];
 vect_1[2]:=p1[2];
 vect_1[3]:=1;
 vect_1[4]:=1;

 vect_2[1]:=p2[1];
 vect_2[2]:=p2[2];
 vect_2[3]:=1;
 vect_2[4]:=1;

 vect_3[1]:=p3[1];
 vect_3[2]:=p3[2];
 vect_3[3]:=1;
 vect_3[4]:=1;

 vect_4[1]:=p4[1];
 vect_4[2]:=p4[2];
 vect_4[3]:=1;
 vect_4[4]:=1;

 matrixX[1,1]:=1;
 matrixX[1,2]:=0;
 matrixX[1,3]:=0;
 matrixX[1,4]:=0;
 matrixX[2,1]:=0;
 matrixX[2,2]:=round(cos(90));
 matrixX[2,3]:=round(sin(90));
 matrixX[2,4]:=0;
 matrixX[3,1]:=0;
 matrixX[3,2]:=round(-sin(90));
 matrixX[3,3]:=round(cos(90));
 matrixX[3,4]:=0;
 matrixX[4,1]:=0;
 matrixX[4,2]:=0;
 matrixX[4,3]:=0;
 matrixX[4,4]:=1;

 vect_matr(vect_1,matrixX);

 p1[1]:=vect_5[1];
 p1[2]:=vect_5[2];

 vect_matr(vect_2,matrixX);

 p2[1]:=vect_5[1];
 p2[2]:=vect_5[2];

 vect_matr(vect_3,matrixX);

 p3[1]:=vect_5[1];
 p3[2]:=vect_5[2];

 vect_matr(vect_4,matrixX);

 p4[1]:=vect_5[1];
 p4[2]:=vect_5[2];


 line(p1[1],p1[2],p2[1],p2[2]);
 line(p2[1],p2[2],p3[1],p3[2]);
 line(p3[1],p3[2],p4[1],p4[2]);
 line(p4[1],p4[2],p1[1],p1[2]);


 ReadLn;
 CloseGraph;
End;


begin
 risunok;
end.