/// <summary>
/// Draws itself
/// </summary>
/// <param name="gr">Graphics to draw</param>
public void Draw(object gr)
{
Graphics g = gr as Graphics;
int x1 = 0;
int y1 = 0;
int x2 = 0;
int y2 = 0;
int x3 = 0;
int y3 = 0;
Control p = null;
if (Source is Panel | Source is UserControl)
{
p = Source as Control;
}
else
{
p = ContainerPerformer.GetPanel(Source) as Control;
}
x1 = p.Left + p.Width / 2;
y1 = p.Top + p.Height / 2;
x2 = Left + Width / 2;
y2 = Top + Height / 2;
if (Target is Panel | Target is UserControl)
{
p = Target as Control;
}
else
{
p = ContainerPerformer.GetPanel(Target) as Control;
}
x3 = p.Left + p.Width / 2;
y3 = p.Top + p.Height / 2;
g.DrawLine(linePen, x1, y1, x2, y2);
g.DrawLine(linePen, x2, y2, x3, y3);
for (int i = 0; i < 3; i++)
{
trianglePoints[i].X = triangle[2 * i];
trianglePoints[i].Y = triangle[2 * i + 1];
}
matrix.Reset();
float dx = x3 - x2;
float dy = y3 - y2;
double s = Math.Sqrt(dx * dx + dy * dy);
if (s == 0)
{
return;
}
double angle = 180 * Math.Atan2(dy / s, dx / s) / Math.PI;
matrix.Translate(x2 + dx / 2, y2 + dy / 2);
matrix.RotateAt((float)angle, trianglePoints[0]);
matrix.TransformPoints(trianglePoints);
g.FillPolygon(triangleBrush, trianglePoints);
}
private static void removeForm(INamedComponent component)
{
if (component is NamedComponent)
{
NamedComponent nc = component as NamedComponent;
nc.RemoveForm();
return;
}
if (component is IShowForm)
{
IShowForm sf = component as IShowForm;
sf.RemoveForm();
return;
}
IChildObjectLabel l = ContainerPerformer.GetPanel(component as IObjectLabel) as IChildObjectLabel;
l.RemoveForm();
}
