protected override void UpdateUIRepresentationCore()
{
base.UpdateUIRepresentationCore();
Viewport2D viewport = Plotter.Viewport;
double deltaX = Point1.X - Point2.X;
double deltaY = Point1.Y - Point2.Y;
double m = deltaY / deltaX;
double b = Point1.Y - Point1.X * deltaY / deltaX;
Func <double, double> func = x => m * x + b;
double xMin = viewport.Visible.XMin;
double xMax = viewport.Visible.XMax;
Point p1 = new Point(xMin, func(xMin)).DataToScreen(viewport.Transform);
Point p2 = new Point(xMax, func(xMax)).DataToScreen(viewport.Transform);
if (direction > 0)
{
p1 = Point2.DataToScreen(viewport.Transform);
}
else
{
p2 = Point1.DataToScreen(viewport.Transform);
}
geometry.StartPoint = p1;
geometry.EndPoint = p2;
}
