How do I construct a symbol with text within it?

[ViktorSafar]

I want to create a CIMSymbol that will be used in a unique value class renderer. The symbol should be a circle with red fill and the letter R in it.

This is what I have but the symbol comes out as empty and the Symbology tab shows "symbol has inconsistent geometry logic"

var textSymbol = SymbolFactory.Instance.ConstructTextSymbol(ColorFactory.Instance.BlackRGB, 8);
var fill = SymbolFactory.Instance.ConstructSolidFill(ColorFactory.Instance.RedRGB);

List<CIMSymbolLayer> symbolLayers = new List<CIMSymbolLayer>
{
	new CIMVectorMarker()
	{
		MarkerGraphics = new CIMMarkerGraphic[]
		{
			new CIMMarkerGraphic()
			{
				Symbol = textSymbol,
				TextString = "R"
			}
		}   
	},
	fill
};

_symbolRightLimit = new CIMPointSymbol() { SymbolLayers = symbolLayers.ToArray() };
_symbolRightLimit.SetSize(10);

I have tried to use the Symbology tab to see what I can fix to make it work but it appears that the only way to make that error go away is to add a global effect to the symbol? And while the error went away, the symbol still did not render.

I have also tried to play with the CIM Viewer to see what I can do but have not managed to find anything.

[ViktorSafar]

Are you potentially replying on the wrong thread?

[ViktorSafar · Accepted solution]

I have actually figured it out by using the Symbology pane and the CIM Viewer and lots of back and forth

double size = 10;
CIMColor fillColor = ColorFactory.Instance.RedRGB;

var textSymbol = SymbolFactory.Instance.ConstructTextSymbol(ColorFactory.Instance.BlackRGB, size);
textSymbol.VerticalAlignment = VerticalAlignment.Center;
textSymbol.HorizontalAlignment = HorizontalAlignment.Center;
var fill = SymbolFactory.Instance.ConstructSolidFill(fillColor);
var marker = SymbolFactory.Instance.ConstructMarker() as CIMVectorMarker;
marker.MarkerPlacement = new CIMMarkerPlacementPolygonCenter();
marker.MarkerGraphics[0].Geometry = new PointN().ToCoreGeometry<MapPoint>();
marker.MarkerGraphics[0].Symbol = textSymbol;
marker.MarkerGraphics[0].TextString = "R";

List<CIMSymbolLayer> symbolLayers = new List<CIMSymbolLayer>
	{
		marker,
		fill
	};

var symbol = new CIMPointSymbol()
{
	Effects = new List<CIMGeometricEffect> { new CIMGeometricEffectRegularPolygon() { Radius = size } }.ToArray(),
	SymbolLayers = symbolLayers.ToArray()
};
symbol.SetSize(size);

return symbol;