fixup! VisualiserTool : Support points and curves

Changes.md

@@ -7,7 +7,7 @@ Improvements
 - VisualiserTool :
   - Changed naming requirements for visualising primitive variables. Values in `dataName` now prefix the primitive variable name with `primitiveVariable:`. Setting `dataName` to `vertex:index` will display vertex indices.
   - Added `mode` plug. The available modes are :
-    - Auto : Vertex indices and integers are displayed `Vertex Label`. Other data is displayed as `Color (Auto Range)`.
+    - Auto : Vertex indices and integers on meshes are displayed `Vertex Label`. All data for curves and points objects are displayed as `Vertex Label`. Other data is displayed as `Color (Auto Range)`.
     - Color (Auto Range) : Float, integer, V2f and color data is displayed without modification. Vector data is remapped from `[-1, 1]` to `[0, 1]`.
     - Color : Values are remapped from the range `[valueMin, valueMax]` to `[0, 1]`.
     - Vertex Label : Values are displayed as a label next to each vertex.

python/GafferSceneUI/VisualiserToolUI.py

@@ -99,8 +99,9 @@
 			"""
 			The method for displaying the data.
 
-			- Auto : Vertex indices and integer data are displayed as `Vertex Label`.
-			Other data is displayed as `Color (Type Range)`.
+			- Auto : Vertex indices and integers on meshes are displayed `Vertex Label`. All
+			data for curves and points objects are displayed as `Vertex Label`. Other data is
+			displayed as `Color (Type Range)`.
 			- Color (Type Range) : Float and integer data are displayed as grayscale. V2f data
 			is displayed with the `x` value for red, `y` value for green and `0` for blue. Vector
 			data is displayed with the `x` value for red, `y` value for green and `z` value for

src/GafferSceneUI/VisualiserTool.cpp

@@ -821,7 +821,7 @@ class VisualiserGadget : public Gadget
 			// Display value at cursor as text
 
 			std::optional<V2f> cursorPos = m_tool->cursorPos();
-			if( !cursorPos )
+			if( !cursorPos || !std::holds_alternative<std::monostate>( cursorVertexValue() ) )
 			{
 				return;
 			}
@@ -1013,7 +1013,11 @@ class VisualiserGadget : public Gadget
 						continue;
 					}
 
-					if( mode == VisualiserTool::Mode::Auto && vData->typeId() != IntVectorDataTypeId )
+					if(
+						mode == VisualiserTool::Mode::Auto &&
+						primitive->typeId() == MeshPrimitive::staticTypeId() &&
+						vData->typeId() != IntVectorDataTypeId
+					)
 					{
 						// Will be handled by `renderColorVisualiser()` instead.
 						continue;