public void StartDraw(IFigure figure)
{
if (figure is TriangleByPointsFigure || figure is NAngleByPointsFigure)
{
if (figure is TriangleByPointsFigure)
{
Drawer = new AnglePointsDrawer(((TriangleByPointsFigure)figure).N);
}
else
{
Drawer = new AnglePointsDrawer(((NAngleByPointsFigure)figure).N);
}
}
else if (figure is EllipseFigure || figure is CircleFigure)
{
if (!(Drawer is EllipseDrawer))
{
Drawer = new EllipseDrawer();
}
}
else if (figure is PenFigure || figure is PolylineByPointsFigure)
{
if (!(Drawer is PenDrawer))
{
Drawer = new PenDrawer();
}
}
else if (!(Drawer is AngleFiguresDrawer))
{
Drawer = new AngleFiguresDrawer();
}
}
public Canvas(int width, int height)
{
_mainBitmap = new Bitmap(width, height);
_graphics = Graphics.FromImage(_mainBitmap);
_allbitmaps.Push((Bitmap)_mainBitmap.Clone());
Pen = new Pen(Color.Black, 1);
Drawer = new PenDrawer();
}
public PenFigure()
{
Points = new List <PointF>();
Drawer = new PenDrawer();
}
public PolylineByPointsFigure()
{
Drawer = new PenDrawer();
Points = new List <Point>();
}
public NPointsFigure()
{
N = 3;
Points = new List <PointF>();
Drawer = new PenDrawer();
}
public LineFigure()
{
Drawer = new PenDrawer();
}
