private Rectangle ToDisplayRect(IScenarioMember obj, Rectangle rect)
{
PointF center = obj.GetPosition();
Point centerRender = CoordinatesToDisplayPoint(center.X, center.Y, rect);
int width = (int)((float)rect.Width * obj.GetRadius() / (HorizontalUnitsVisible / 2.0f));
int height = (int)((float)rect.Height * obj.GetRadius() / (VerticalUnitsVisible / 2.0f));
return(new Rectangle(centerRender.X - (width / 2), centerRender.Y - (height / 2), width, height));
}
private bool HitTest(IScenarioMember member, PointF simpt)
{
var simposition = member.GetPosition();
float dx = simpt.X - simposition.X;
float dy = simpt.Y - simposition.Y;
float distanceSq = dx * dx + dy * dy;
return(distanceSq <= member.GetRadius() * member.GetRadius());
}