Fix #1174: Spline does not have mirror handles enabled (#1182)

* Set spline mirror handles to enabled by default

* refactor mirror setting into common function

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>

editor/src/messages/tool/common_functionality/graph_modification_utils.rs

@@ -1,7 +1,8 @@
 use crate::messages::portfolio::document::node_graph;
+use crate::messages::portfolio::document::node_graph::VectorDataModification;
 use crate::messages::prelude::*;
 
-use bezier_rs::Subpath;
+use bezier_rs::{ManipulatorGroup, Subpath};
 use document_legacy::{LayerId, Operation};
 use graph_craft::document::NodeNetwork;
 use graphene_core::uuid::ManipulatorGroupId;
@@ -28,3 +29,15 @@ pub fn new_custom_layer(network: NodeNetwork, layer_path: Vec<LayerId>, response
 	);
 	responses.add(DocumentMessage::NodeGraphFrameGenerate { layer_path });
 }
+
+pub fn set_manipulator_mirror_angle(manipulator_groups: &Vec<ManipulatorGroup<ManipulatorGroupId>>, layer_path: &Vec<u64>, mirror_angle: bool, responses: &mut VecDeque<Message>) {
+	for manipulator_group in manipulator_groups {
+		responses.add(GraphOperationMessage::Vector {
+			layer: layer_path.clone(),
+			modification: VectorDataModification::SetManipulatorHandleMirroring {
+				id: manipulator_group.id,
+				mirror_angle,
+			},
+		});
+	}
+}

editor/src/messages/tool/tool_messages/ellipse_tool.rs

@@ -1,7 +1,6 @@
 use crate::messages::frontend::utility_types::MouseCursorIcon;
 use crate::messages::input_mapper::utility_types::input_keyboard::{Key, MouseMotion};
 use crate::messages::layout::utility_types::layout_widget::PropertyHolder;
-use crate::messages::portfolio::document::node_graph::VectorDataModification;
 use crate::messages::prelude::*;
 use crate::messages::tool::common_functionality::graph_modification_utils;
 use crate::messages::tool::common_functionality::resize::Resize;
@@ -130,17 +129,7 @@ impl Fsm for EllipseToolFsmState {
 					let subpath = bezier_rs::Subpath::new_ellipse(DVec2::ZERO, DVec2::ONE);
 					let manipulator_groups = subpath.manipulator_groups().to_vec();
 					graph_modification_utils::new_vector_layer(vec![subpath], layer_path.clone(), responses);
-
+					graph_modification_utils::set_manipulator_mirror_angle(&manipulator_groups, &layer_path, true, responses);
-					// Set the four manipulator groups to have their handle angles mirrored by default
-					for manipulator_group in manipulator_groups {
-						responses.add(GraphOperationMessage::Vector {
-							layer: layer_path.clone(),
-							modification: VectorDataModification::SetManipulatorHandleMirroring {
-								id: manipulator_group.id,
-								mirror_angle: true,
-							},
-						});
-					}
 
 					// Set the fill color to the primary working color
 					responses.add(GraphOperationMessage::FillSet {

editor/src/messages/tool/tool_messages/spline_tool.rs

@@ -264,7 +264,9 @@ fn add_spline(tool_data: &SplineToolData, global_tool_data: &DocumentToolData, s
 	let subpath = bezier_rs::Subpath::new_cubic_spline(points);
 
 	let layer_path = tool_data.path.clone().unwrap();
+	let manipulator_groups = subpath.manipulator_groups().to_vec();
 	graph_modification_utils::new_vector_layer(vec![subpath], layer_path.clone(), responses);
+	graph_modification_utils::set_manipulator_mirror_angle(&manipulator_groups, &layer_path, true, responses);
 
 	responses.add(GraphOperationMessage::StrokeSet {
 		layer: layer_path.clone(),