上位机模块之halcon绘制ROI与获取ROI，在hsmartwindow实现-编程知识

上位机模块之halcon绘制ROI与获取ROI，在hsmartwindow实现

在上位机中通常需要使用到绘制ROI模块或者获取已经绘制好的ROI区域的参数，在这里通过使用hsmartwindow窗体控件进行对ROI的绘制和获取。
先上代码：

/// <summary>/// 创建ROI/// </summary>/// <param name="Win">传入HSmartWindowControl</param>/// <param name="ROItype">需要绘制的ROI类型</param>/// <param name="drawingObject">绘制好的ROI参数，传出</param>public void Set_DrawHalconROI(HSmartWindowControl Win, HDrawingObject.HDrawingObjectType ROItype, out HDrawingObject drawingObject){switch (ROItype){case HDrawingObject.HDrawingObjectType.CIRCLE:drawingObject = HDrawingObject.CreateDrawingObject(HDrawingObject.HDrawingObjectType.CIRCLE, 500, 500, 300);Win.HalconWindow.AttachDrawingObjectToWindow(drawingObject);break;case HDrawingObject.HDrawingObjectType.RECTANGLE2:drawingObject = HDrawingObject.CreateDrawingObject(HDrawingObject.HDrawingObjectType.RECTANGLE2, 500, 500, 0, 500, 500);Win.HalconWindow.AttachDrawingObjectToWindow(drawingObject);break;case HDrawingObject.HDrawingObjectType.LINE:drawingObject = HDrawingObject.CreateDrawingObject(HDrawingObject.HDrawingObjectType.LINE, 200, 200, 500, 500);Win.HalconWindow.AttachDrawingObjectToWindow(drawingObject);break;default:drawingObject = null;break;}}

/// <summary>/// 获取ROI参数/// </summary>/// <param name="ROItype">需要输入的ROI类型</param>/// <param name="drawingObject">传入的ROI对象参数</param>/// <param name="Result">输出结果double数组</param>/// <param name="HROI">输出ROI形状，Hobject类型</param>public void Get_DrawHalconROI(HDrawingObject.HDrawingObjectType ROItype, HDrawingObject drawingObject, out double[] Result, out HObject HROI){HTuple paramName = new HTuple(), param = new HTuple();string[] paramlist = new string[10];switch (ROItype){case HDrawingObject.HDrawingObjectType.RECTANGLE2:paramlist = new string[] { "row", "column", "phi", "length1", "length2" };paramName = paramlist;param = drawingObject.GetDrawingObjectParams(paramName);HOperatorSet.GenRectangle2(out HROI, param.DArr[0], param.DArr[1], param.DArr[2], param.DArr[3], param.DArr[4]);Result = param.DArr;break;case HDrawingObject.HDrawingObjectType.CIRCLE:paramlist = new string[] { "row", "column", "radius" };paramName = paramlist;param = drawingObject.GetDrawingObjectParams(paramName);HOperatorSet.GenCircle(out HROI, param.DArr[0], param.DArr[1], param.DArr[2]);Result = param.DArr;break;case HDrawingObject.HDrawingObjectType.LINE:paramlist = new string[] { "row1", "column1", "row2", "column2" };paramName = paramlist;param = drawingObject.GetDrawingObjectParams(paramName);HOperatorSet.GenRegionLine(out HROI, param.DArr[0], param.DArr[1], param.DArr[2], param.DArr[3]);Result = param.DArr;break;default:Result = new double[] { 0 };HROI = null;break;}}

实际效果：
直线ROI
圆形ROI
带角度的矩形ROI
延申说明：
1.Halcon自带的.netROI是通过调用HDrawingObject中的算子实现的，获取ROI同样也是，如何去得到延申的其他ROI。在Halcon的帮助文档中，搜索SetDrawingObjectParams并在.net格式中我们可以找到halcon所支持的全部ROI区域的参数，我们根据区域参数去获取即可。
在这里插入图片描述
注意事项：
1.我们在编写的时候一定要主语获取的ROI的变量名称是否输入错误。我们在传入获取的参数名称需要与文档中的参数名称一一对应，并且大小写不能错误。