Add concatenate node?

Author: Keavon

node-graph/gcore/src/graphic_element.rs

@@ -289,6 +289,31 @@ async fn layer(_: impl Ctx, mut stack: GraphicGroupTable, element: GraphicElemen
 	stack
 }
 
+#[node_macro::node(category("General"))]
+async fn concatenate<T: Clone>(
+	_: impl Ctx,
+	#[implementations(
+		GraphicGroupTable,
+	 	VectorDataTable,
+		ImageFrameTable<Color>,
+	 	TextureFrameTable,
+	)]
+	from: Instances<T>,
+	#[expose]
+	#[implementations(
+		GraphicGroupTable,
+	 	VectorDataTable,
+		ImageFrameTable<Color>,
+	 	TextureFrameTable,
+	)]
+	mut to: Instances<T>,
+) -> Instances<T> {
+	for instance in from.instances() {
+		to.push_instance(instance);
+	}
+	to
+}
+
 #[node_macro::node(category("Debug"))]
 async fn to_element<Data: Into<GraphicElement> + 'n>(
 	_: impl Ctx,

node-graph/gcore/src/instances.rs

@@ -61,6 +61,25 @@ impl<T> Instances<T> {
 		}
 	}
 
+	pub fn push_instance(&mut self, instance: Instance<T>) -> InstanceMut<T>
+	where
+		T: Clone,
+	{
+		self.id.push(*instance.id);
+		self.instance.push(instance.instance.clone());
+		self.transform.push(*instance.transform);
+		self.alpha_blending.push(*instance.alpha_blending);
+		self.source_node_id.push(*instance.source_node_id);
+
+		InstanceMut {
+			id: self.id.last_mut().expect("Shouldn't be empty"),
+			instance: self.instance.last_mut().expect("Shouldn't be empty"),
+			transform: self.transform.last_mut().expect("Shouldn't be empty"),
+			alpha_blending: self.alpha_blending.last_mut().expect("Shouldn't be empty"),
+			source_node_id: self.source_node_id.last_mut().expect("Shouldn't be empty"),
+		}
+	}
+
 	pub fn one_instance(&self) -> Instance<T> {
 		Instance {
 			id: self.id.first().unwrap_or_else(|| panic!("ONE INSTANCE EXPECTED, FOUND {}", self.instance.len())),