delete common.h, viz_types.hpp, rendering properties are public, setcolor in creating_widgets tutorial

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

@@ -6,6 +6,34 @@ namespace cv
 {
     namespace viz
     {
+        /////////////////////////////////////////////////////////////////////////////
+        /// Widget rendering properties
+        enum RenderingProperties
+        {
+            VIZ_POINT_SIZE,
+            VIZ_OPACITY,
+            VIZ_LINE_WIDTH,
+            VIZ_FONT_SIZE,
+            VIZ_COLOR,
+            VIZ_REPRESENTATION,
+            VIZ_IMMEDIATE_RENDERING,
+            VIZ_SHADING
+        };
+
+        enum RenderingRepresentationProperties
+        {
+            REPRESENTATION_POINTS,
+            REPRESENTATION_WIREFRAME,
+            REPRESENTATION_SURFACE
+        };
+
+        enum ShadingRepresentationProperties
+        {
+            SHADING_FLAT,
+            SHADING_GOURAUD,
+            SHADING_PHONG
+        };
+        
         /////////////////////////////////////////////////////////////////////////////
         /// The base class for all widgets
         class CV_EXPORTS Widget