widget2d setcolor implementation

modules/viz/include/opencv2/viz/widgets.hpp

@@ -53,6 +53,8 @@ namespace temp_viz
         Widget2D() {}
         Widget2D(const Widget &other);
         Widget2D& operator=(const Widget &other);
+        
+        void setColor(const Color &color);
     };
     
 

modules/viz/src/widget.cpp

@@ -182,4 +182,13 @@ temp_viz::Widget2D& temp_viz::Widget2D::operator=(const Widget &other)
     CV_Assert(actor);
     Widget::operator=(other);
     return *this;
+}
+
+void temp_viz::Widget2D::setColor(const Color &color)
+{
+    vtkActor2D *actor = vtkActor2D::SafeDownCast(WidgetAccessor::getActor(*this));
+    CV_Assert(actor);
+    Color c = vtkcolor(color);
+    actor->GetProperty ()->SetColor (c.val);
+    actor->Modified ();
 }
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