Upgrade and document the math operation nodes

editor/src/messages/portfolio/portfolio_message_handler.rs

@@ -559,6 +559,21 @@ impl MessageHandler<PortfolioMessage, PortfolioMessageData<'_>> for PortfolioMes
 							.set_input(&InputConnector::node(*node_id, 5), NodeInput::value(TaggedValue::F64(1.), false), &[]);
 					}
 
+					// Upgrade Sine, Cosine, and Tangent nodes to include a boolean input for whether the output should be in radians, which was previously the only option but is now not the default
+					// Also upgrade the Modulo node to include a boolean input for whether the output should be always positive, which was previously not an option
+					if (reference == "Sine" || reference == "Cosine" || reference == "Tangent" || reference == "Modulo") && inputs_count == 1 {
+						let node_definition = resolve_document_node_type(reference).unwrap();
+						let document_node = node_definition.default_node_template().document_node;
+						document.network_interface.replace_implementation(node_id, &[], document_node.implementation.clone());
+
+						let old_inputs = document.network_interface.replace_inputs(node_id, document_node.inputs.clone(), &[]);
+
+						document.network_interface.set_input(&InputConnector::node(*node_id, 0), old_inputs[0].clone(), &[]);
+						document
+							.network_interface
+							.set_input(&InputConnector::node(*node_id, 1), NodeInput::value(TaggedValue::Bool(reference != "Modulo"), false), &[]);
+					}
+
 					// Upgrade layer implementation from https://github.com/GraphiteEditor/Graphite/pull/1946
 					if reference == "Merge" || reference == "Artboard" {
 						let node_definition = crate::messages::portfolio::document::node_graph::document_node_definitions::resolve_document_node_type(reference).unwrap();

frontend/src/components/views/Graph.svelte

@@ -476,7 +476,7 @@
 				style:--data-color-dim={`var(--color-data-${(node.primaryOutput?.dataType || "General").toLowerCase()}-dim)`}
 				style:--layer-area-width={layerAreaWidth}
 				style:--node-chain-area-left-extension={layerChainWidth !== 0 ? layerChainWidth + 0.5 : 0}
-				title={description + (editor.handle.inDevelopmentMode() ? `\n\nNode ID: ${node.id}` : "")}
+				title={`${node.displayName}\n\n${description || ""}`.trim() + (editor.handle.inDevelopmentMode() ? `\n\nNode ID: ${node.id}` : "")}
 				data-node={node.id}
 				bind:this={nodeElements[nodeIndex]}
 			>
@@ -616,7 +616,7 @@
 				style:--clip-path-id={`url(#${clipPathId})`}
 				style:--data-color={`var(--color-data-${(node.primaryOutput?.dataType || "General").toLowerCase()})`}
 				style:--data-color-dim={`var(--color-data-${(node.primaryOutput?.dataType || "General").toLowerCase()}-dim)`}
-				title={description + (editor.handle.inDevelopmentMode() ? `\n\nNode ID: ${node.id}` : "")}
+				title={`${node.displayName}\n\n${description || ""}`.trim() + (editor.handle.inDevelopmentMode() ? `\n\nNode ID: ${node.id}` : "")}
 				data-node={node.id}
 				bind:this={nodeElements[nodeIndex]}
 			>

libraries/bezier-rs/src/subpath/core.rs

@@ -366,11 +366,15 @@ impl<PointId: crate::Identifier> Subpath<PointId> {
 	}
 }
 
+/// Solve for the first handle of an open spline. (The opposite handle can be found by mirroring the result about the anchor.)
 pub fn solve_spline_first_handle_open(points: &[DVec2]) -> Vec<DVec2> {
 	let len_points = points.len();
 	if len_points == 0 {
 		return Vec::new();
 	}
+	if len_points == 1 {
+		return vec![points[0]];
+	}
 
 	// Matrix coefficients a, b and c (see https://mathworld.wolfram.com/CubicSpline.html).
 	// Because the `a` coefficients are all 1, they need not be stored.
@@ -418,6 +422,8 @@ pub fn solve_spline_first_handle_open(points: &[DVec2]) -> Vec<DVec2> {
 	d
 }
 
+/// Solve for the first handle of a closed spline. (The opposite handle can be found by mirroring the result about the anchor.)
+/// If called with fewer than 3 points, this function will return an empty result.
 pub fn solve_spline_first_handle_closed(points: &[DVec2]) -> Vec<DVec2> {
 	let len_points = points.len();
 	if len_points < 3 {