public override void Draw(Graphics gp)
{
//Closed Curve phải có tối thiểu 3 điểm để vẽ
//Nếu ít hơn 3 điểm, thì vẽ các điểm hiện có
if (LPoints.Count < 3)
{
using (var tmpBrush = new SolidBrush(Pen.Color))
LPoints.ForEach(p => gp.FillRectangle(tmpBrush, new Rectangle(p.X - 3, p.Y - 3, 6, 6)));
return;
}
GPPaths.Reset();
GPPaths.AddClosedCurve(LPoints.ToArray());
if (IsFilled)
{
gp.FillClosedCurve(Brush, LPoints.ToArray());
}
if (IsDrawBorder)
{
gp.DrawClosedCurve(Pen, LPoints.ToArray());
}
if (IsSelected)
{
using (var brush = new SolidBrush(Color.Blue))
LPoints.ForEach(p => gp.FillRectangle(brush, new Rectangle(p.X - 3, p.Y - 3, 6, 6)));
}
}
/// <summary>
/// Dùng để xác định một hình có được chọn hay không
/// </summary>
/// <param name="p">Vị trí điểm được xét có thuộc hình hay không </param>
/// <returns>True nếu hình được chọn </returns>
public virtual bool Select(Point p)
{
if (IsFilled)
{
return(GPPaths.IsVisible(p));
}
return(GPPaths.IsOutlineVisible(p, Pen));
}
public override void Draw(Graphics gp)
{
gp.DrawCurve(Pen, LPoints.ToArray());
GPPaths.Reset();
GPPaths.AddCurve(LPoints.ToArray());
if (IsSelected)
{
using (var brush = new SolidBrush(Color.Blue))
LPoints.ForEach(p => gp.FillRectangle(brush, new Rectangle(p.X - 4, p.Y - 4, 8, 8)));
}
}
public override void Draw(Graphics gp)
{
gp.DrawLine(Pen, P1, P2);
GPPaths.Reset();
GPPaths.AddLine(P1, P2);
if (IsSelected)
{
Brush brush = new SolidBrush(Color.Blue);
gp.FillRectangle(brush, P1.X - 3, P1.Y - 3, 6, 6);
gp.FillRectangle(brush, P2.X - 3, P2.Y - 3, 6, 6);
}
}
public override void Draw(Graphics gp)
{
try
{
RectShape = DetectBound();
GPPaths.Reset();
GPPaths.AddArc(RectShape, StartAngle, SweepAngle);
gp.DrawArc(Pen, RectShape, StartAngle, SweepAngle);
if (IsSelected)
{
using (var pen = new Pen(Color.Blue)
{
Width = 2, DashStyle = System.Drawing.Drawing2D.DashStyle.Dash
})
{
gp.DrawRectangle(pen, RectShape);
}
}
}
catch { }
}
public override void Draw(Graphics gp)
{
RectShape = DetectBound();
GPPaths.Reset();
GPPaths.AddEllipse(RectShape);
if (IsFilled)
{
gp.FillEllipse(Brush, RectShape);
}
if (IsDrawBorder)
{
gp.DrawEllipse(Pen, RectShape);
}
if (IsSelected)
{
Brush brush = new SolidBrush(Color.Blue);
gp.FillRectangle(brush, (P1.X + P2.X) / 2 - 4, P1.Y - 4, 8, 8);
gp.FillRectangle(brush, (P1.X + P2.X) / 2 - 4, P2.Y - 4, 8, 8);
gp.FillRectangle(brush, P1.X - 4, (P1.Y + P2.Y) / 2 - 4, 8, 8);
gp.FillRectangle(brush, P2.X - 4, (P1.Y + P2.Y) / 2 - 4, 8, 8);
}
}
public override void Draw(Graphics gp)
{
GPPaths.Reset();
GPPaths.AddCurve(LPoints.ToArray());
if (IsFilled)
{
gp.FillPath(Brush, GPPaths);
}
if (IsDrawBorder)
{
gp.DrawPath(Pen, GPPaths);
}
if (IsSelected)
{
using (Brush brush = new SolidBrush(Color.Blue))
{
for (int i = 0; i < LPoints.Count; i += 4)
{
gp.FillRectangle(brush, LPoints[i].X - 4, LPoints[i].Y - 4, 8, 8);
}
}
}
}
