EasyGaugePolygon

Support
Required licenses	EasyGauge
Recommended images	Any gray level image from the folder Sample Images/EasyGauge
Location	Matching and Measurement/EasyGaugePolygon

Purpose

This sample program demonstrates how to:

• Use the class EPolygonGauge of the EasyGauge library.

• Edit the geometry of the gauge and change the main parameters.

• Configure various display options.

Code highlights

1. Initialize a default polygon gauge on the loaded image.

   m_PolygonGauge.SetCenterXY(m_Image.GetWidth() / 2.f, m_Image.GetHeight() / 2.f);
   float half_size = m_Image.GetWidth() / 4.f;
   m_PolygonGauge.AppendVertex(EPoint(half_size, half_size));
   m_PolygonGauge.AppendVertex(EPoint(half_size, -half_size));
   m_PolygonGauge.AppendVertex(EPoint(-half_size, -half_size));
   m_PolygonGauge.AppendVertex(EPoint(-half_size, half_size));
   m_PolygonGauge.SetTolerance(m_Image.GetHeight() / 20.f);
   

2. Draw the image and the nominal polygon gauge.

   SourceImage.Draw(drawAdapter, m_fZoomFactor, m_fZoomFactor, m_OrgX, m_OrgY);
   gauge.SetZoom(m_fZoomFactor);
   gauge.SetPan(m_OrgX, m_OrgY);
   gauge.Draw(drawAdapter);
   
   if (m_bViewPoints)
     gauge.Draw(drawAdapter, EDrawingMode_SampledPoints);
   

3. Create a new vertex when you clikc on the left button.

   if (PolygonGauge.GetHitHandle() == EDragHandle_NoHandle)
   {
     PolygonGauge.AddVertexAtDisplayPosition(point.x, point.y);
   }