# EasyGaugeBasic

| Support            | ![](assets/images/sample_programs/applies_to/cpp.svg) ![](assets/images/sample_programs/applies_to/cs.svg) ![](assets/images/sample_programs/applies_to/qt.svg) ![](assets/images/sample_programs/applies_to/vb.svg)   |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Required licenses  | **EasyGauge**                                                                                                                                                                                                          |
| Recommended images | Any image from the folder `Sample Images\EasyGauge`                                                                                                                                                                    |
| Location           | `Matching and Measurement\EasyGaugeBasic`                                                                                                                                                                              |

## Purpose

This sample program demonstrates how to:

* Load an image and apply a gauge from **EasyGauge**, chosen between a Point Gauge, a Line Gauge, a Rectangle Gauge, a Circle Gauge, a Wedge Gauge and a Polygon Gauge.
* Implement graphical edition of the gauge geometry.
* Set and display the main parameters of the gauges: the transition polarity, the choice of measure and various display options.

![](assets/images/sample_programs/matching-easygaugebasic.webp)

## Code highlights

1. Set the transition type to `ETransitionType_Bw` and perform the measurement.
   ```c++
   m_PointGauge.SetTransitionType(ETransitionType_Bw);
   m_PointGauge.Measure(&m_Image);
   ```
2. Draw the current gauge.
   ```c++
   PointGauge.SetZoom(m_fZoomFactor);
   PointGauge.SetPan(m_OrgX, m_OrgY);
   PointGauge.Draw(drawAdapter);

   // optional draws
   if (m_bViewResults)
     PointGauge.Draw(drawAdapter, EDrawingMode_Actual);

   if (m_bViewSource)
     PointGauge.Draw(drawAdapter, EDrawingMode_Position);

   if (m_bViewFiltered)
     PointGauge.Draw(drawAdapter, EDrawingMode_Match);

   if (m_bViewPaths)
     PointGauge.Draw(drawAdapter, EDrawingMode_SampledPaths);

   if (m_bViewPoints)
     PointGauge.Draw(drawAdapter, EDrawingMode_SampledPoints);
   ```