SinglePointAnnotation.h

#pragma once
#include "Annotation.h"
#include "AnnotationPage.h"
using namespace System;
using namespace System::Collections::Generic;
using namespace System::Text;
using namespace System::Drawing;

namespace MST
{
    namespace Imaging
    {
        namespace Annotations
        {
            public ref class SinglePointAnnotation abstract : public MSTAnnotation 
            {
            public:
                SinglePointAnnotation(Pen^ pen,MSTAnnotationPage^ page):MSTAnnotation(pen,page)
                {
                    m_ptArr = gcnew array<PointF>(1);
                } 
            };

            public ref class Point : public SinglePointAnnotation
            {
            public:
                Point(Pen^ pen,MSTAnnotationPage^ page) : SinglePointAnnotation(pen,page)
                {
                }

                property Type AnnotationType 
                {
                    virtual Type get() override
                    {
                        return Annotations::Type::Point;   
                    }
                }
                virtual void Draw(GraphicsPath^ gp,array<PointF>^ ptArr)override
                {
                    RectangleF rect(ptArr[0].X-10,ptArr[0].Y-10,20,20);
                    gp->AddEllipse(rect);
                    PointF pt((ptArr[0].X-10+ptArr[0].X+10)/2,ptArr[0].Y-10);
                    PointF pt2(ptArr[0].X-10,(ptArr[0].Y-10 + ptArr[0].Y+10)/2);
                    gp->AddLine(pt.X,pt.Y,ptArr[0].X,ptArr[0].Y+(ptArr[0].Y-pt.Y));
                    gp->CloseFigure();
                    gp->AddLine(pt2.X,pt2.Y,ptArr[0].X+(ptArr[0].X-pt2.X),ptArr[0].Y);
                }
                virtual void Move(int cx,int cy)override;

                double GetDistance(System::Drawing::PointF start, PointF end);
            private:
            };
                
        }
    }
}