Instance tables refactor part 4: replace ArtboardGroups with multi-row Instances<Artboard> (#2265)

* Clean up dyn_any usages

* Migrate ArtboardGroup to ArtboardGroupTable (not yet flattened)

* Reorder graphical data imports

* Flatten and remove ArtboardGroup in favor of ArtboardGroupTable

* Fix test

node-graph/gcore/src/vector/brush_stroke.rs

@@ -3,6 +3,7 @@ use crate::raster::BlendMode;
 use crate::Color;
 
 use dyn_any::DynAny;
+
 use glam::DVec2;
 use std::hash::{Hash, Hasher};
 

node-graph/gcore/src/vector/style.rs

@@ -5,6 +5,7 @@ use crate::renderer::format_transform_matrix;
 use crate::Color;
 
 use dyn_any::DynAny;
+
 use glam::{DAffine2, DVec2};
 use std::fmt::{self, Display, Write};
 

node-graph/gcore/src/vector/vector_nodes.rs

@@ -670,6 +670,7 @@ async fn subpath_segment_lengths(_: impl Ctx, vector_data: VectorDataTable) -> V
 
 #[node_macro::node(name("Spline"), category("Vector"), path(graphene_core::vector))]
 async fn spline(_: impl Ctx, mut vector_data: VectorDataTable) -> VectorDataTable {
+	let original_transform = vector_data.transform();
 	let vector_data = vector_data.one_instance_mut().instance;
 
 	// Exit early if there are no points to generate splines from.
@@ -707,7 +708,9 @@ async fn spline(_: impl Ctx, mut vector_data: VectorDataTable) -> VectorDataTabl
 	}
 	vector_data.segment_domain = segment_domain;
 
-	VectorDataTable::new(vector_data.clone())
+	let mut result = VectorDataTable::new(vector_data.clone());
+	*result.transform_mut() = original_transform;
+	result
 }
 
 #[node_macro::node(category("Vector"), path(graphene_core::vector))]