Снежинка алгоритмом Брезенхема

void drawLine(int x1, int y1, int x2, int y2)
{
    int deltaX = abs(x2 - x1);
    int deltaY = abs(y2 - y1);
    int signX = x1 < x2 ? 1 : -1;
    int signY = y1 < y2 ? 1 : -1;
    int error = deltaX - deltaY;
 
    for (;;)
    {
        setPixel(x1, y1);
 
        if(x1 == x2 && y1 == y2)
            break;
 
        int error2 = error * 2;
 
        if(error2 > -deltaY)
        {
            error -= deltaY;
            x1 += signX;
        }
 
        if(error2 < deltaX)
        {
            error += deltaX;
            y1 += signY;
        }
    }
}

void line(x0,x1,y0,y1)
}
  int deltax = abs(x1-x0);
  int deltay = abs(y1-y0);
  double error = 0;
  double deltaerr = deltay/deltax;
  int y = y0;
  for (x=x0;x<x1;x++) {
    plot(x,y);
    error = error+deltaerr;
    if (error>=0.5) {
      y = y+1;
        error = error-1.0;
    }
  }
}

int x,y,dx,dy;
float e;
x=100;
y=200;
dx=200-x;
dy=300-y;
e=dy/dx-0.5;
 for (int i =1 ;i<=x;i++)
{
Canvas->Pixels[x][y] = clGreen;
while(e>=0)
{
y=y+1;
e=e-1;
}
 
//x=x+1;
e=e+dy/dx;
}
//////////////////////////
 
 
x=200;
y=300;
dx=400-x;
dy=600-y;
e=dy/dx-0.5;
 for (int i =1 ;i<=x;i=i+1)
{
Canvas->Pixels[x][y] = clRed;
while(e>=0)
{
//y=y+1;
e=e-1;
}
 
x=x-1;
e=e+dy/dx;
}
////////////////////////////////
x=300;
y=300;
dx=500-x;
dy=500-y;
e=dy/dx-0.5;
 for (int i =1 ;i<=x;i=i+1)
{
Canvas->Pixels[x][x] = clYellow;
while(e>=0)
{
y=y+1;
e=e-1;
}
 
x=x-1;
e=e+dy/dx;

float x,y,t;
Form3->Canvas->MoveTo(100,100);
for (t=0;t<2*3.14;t=t+0.01)
 {
  x=50*(0.5+2*cos(t));
  y=50*(0.2+2*sin(t));
Form3->Canvas->LineTo(x+100,y+100);
 }

void __fastcall TForm3::Brez(int x, int y, int x2, int y2)
{
 int dx = abs(x2 - x);
 int dy = abs(y2 - y);
 int Xm = x < x2 ? 1 : -1;
 int Ym = y < y2 ? 1 : -1;
 int e = dx - dy;
 
 for(;;)
 {
 Canvas->Pixels[x][y]=clRed;
 if(x==x2 && y==y2)
 break;
 int e2 = e * 2;
 
 if(e2 > -dy)
 {
 e -= dy;
 x += Xm;
  }
 
 if(e2 < dx)
 {
 e += dx;
 y += Ym;
 }
  }
 
}
void __fastcall TForm3::Button2Click(TObject *Sender)
{
 int k=0; int m=150; int x=170; int y=180;
 int x2, y2;
 for(int i=k; i<=360; i+=10)
   {
 x2=x+m*cos(i*radian);
 y2=y-m*sin(i*radian);
 Brez(x2,y2,x,y);
}
  }