Copy to Points node: add scale/rotation randomization parameters (#1592)

* WIP, transforms broken with rot/scale

* Transform around bounding box centre

* Add units and tooltips

---------

Co-authored-by: 0hypercube <0hypercube@gmail.com>

editor/src/messages/portfolio/document/node_graph/node_graph_message_handler/document_node_types.rs

@@ -2644,11 +2644,14 @@ fn static_nodes() -> Vec<DocumentNodeDefinition> {
 			name: "Copy to Points",
 			category: "Vector",
 			// TODO: Wrap this implementation with a document node that has a cache node so the output is cached?
-			implementation: NodeImplementation::proto("graphene_core::vector::CopyToPoints<_, _>"),
+			implementation: NodeImplementation::proto("graphene_core::vector::CopyToPoints<_, _, _, _, _>"),
 			manual_composition: Some(concrete!(Footprint)),
 			inputs: vec![
 				DocumentInputType::value("Points", TaggedValue::VectorData(graphene_core::vector::VectorData::empty()), true),
 				DocumentInputType::value("Instance", TaggedValue::VectorData(graphene_core::vector::VectorData::empty()), true),
+				DocumentInputType::value("Random Scale Min", TaggedValue::F32(1.), false),
+				DocumentInputType::value("Random Scale Max", TaggedValue::F32(1.), false),
+				DocumentInputType::value("Random Rotation", TaggedValue::F32(0.), false),
 			],
 			outputs: vec![DocumentOutputType::new("Vector", FrontendGraphDataType::Subpath)],
 			properties: node_properties::copy_to_points_properties,

editor/src/messages/portfolio/document/node_graph/node_graph_message_handler/node_properties.rs

@@ -2036,15 +2036,39 @@ pub fn circular_repeat_properties(document_node: &DocumentNode, node_id: NodeId,
 }
 
 pub fn copy_to_points_properties(document_node: &DocumentNode, node_id: NodeId, _context: &mut NodePropertiesContext) -> Vec<LayoutGroup> {
-	let instance = vector_widget(document_node, node_id, 1, "Spacing", true);
+	let instance = vector_widget(document_node, node_id, 1, "Instance", true);
 
-	vec![LayoutGroup::Row { widgets: instance }]
+	let random_scale_min = number_widget(
+		document_node,
+		node_id,
+		2,
+		"Random Scale Min",
+		NumberInput::default().min(0.).mode_range().range_min(Some(0.)).range_max(Some(2.)).unit("x"),
+		true,
+	);
+	let random_scale_max = number_widget(
+		document_node,
+		node_id,
+		3,
+		"Random Scale Max",
+		NumberInput::default().min(0.).mode_range().range_min(Some(0.)).range_max(Some(2.)).unit("x"),
+		true,
+	);
+
+	let random_rotation = number_widget(document_node, node_id, 4, "Random Rotation", NumberInput::default().min(0.).max(360.).mode_range().unit("°"), true);
+
+	vec![
+		LayoutGroup::Row { widgets: instance }.with_tooltip("Artwork to be copied and placed at each point"),
+		LayoutGroup::Row { widgets: random_scale_min }.with_tooltip("Minimum range of randomized sizes given to each instance"),
+		LayoutGroup::Row { widgets: random_scale_max }.with_tooltip("Maximum range of randomized sizes given to each instance"),
+		LayoutGroup::Row { widgets: random_rotation }.with_tooltip("Range of randomized angles given to each instance, in degrees ranging from furthest clockwise to counterclockwise"),
+	]
 }
 
 pub fn sample_points_properties(document_node: &DocumentNode, node_id: NodeId, _context: &mut NodePropertiesContext) -> Vec<LayoutGroup> {
-	let spacing = number_widget(document_node, node_id, 1, "Spacing", NumberInput::default().min(1.), true);
-	let start_offset = number_widget(document_node, node_id, 2, "Start Offset", NumberInput::default().min(0.), true);
-	let stop_offset = number_widget(document_node, node_id, 3, "Stop Offset", NumberInput::default().min(0.), true);
+	let spacing = number_widget(document_node, node_id, 1, "Spacing", NumberInput::default().min(1.).unit(" px"), true);
+	let start_offset = number_widget(document_node, node_id, 2, "Start Offset", NumberInput::default().min(0.).unit(" px"), true);
+	let stop_offset = number_widget(document_node, node_id, 3, "Stop Offset", NumberInput::default().min(0.).unit(" px"), true);
 	let adaptive_spacing = bool_widget(document_node, node_id, 4, "Adaptive Spacing", true);
 
 	vec![

node-graph/gcore/src/transform.rs

@@ -244,7 +244,7 @@ pub(crate) async fn transform_vector_data<Fut: Future>(
 where
 	Fut::Output: TransformMut,
 {
-	// TOOD: This is hack and might break for Vector data because the pivot may be incorrect
+	// TODO: This is hack and might break for Vector data because the pivot may be incorrect
 	let transform = DAffine2::from_scale_angle_translation(scale, rotate as f64, translate) * DAffine2::from_cols_array(&[1., shear.y, shear.x, 1., 0., 0.]);
 	if !footprint.ignore_modifications {
 		let pivot_transform = DAffine2::from_translation(pivot);

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

@@ -175,9 +175,12 @@ impl ConcatElement for GraphicGroup {
 }
 
 #[derive(Debug, Clone, Copy)]
-pub struct CopyToPoints<Points, Instance> {
+pub struct CopyToPoints<Points, Instance, RandomScaleMin, RandomScaleMax, RandomRotation> {
 	points: Points,
 	instance: Instance,
+	random_scale_min: RandomScaleMin,
+	random_scale_max: RandomScaleMax,
+	random_rotation: RandomRotation,
 }
 
 #[node_macro::node_fn(CopyToPoints)]
@@ -185,19 +188,36 @@ async fn copy_to_points<I: GraphicElementRendered + Default + ConcatElement + Tr
 	footprint: Footprint,
 	points: impl Node<Footprint, Output = FP>,
 	instance: impl Node<Footprint, Output = FI>,
+	random_scale_min: f32,
+	random_scale_max: f32,
+	random_rotation: f32,
 ) -> I {
 	let points = self.points.eval(footprint).await;
 	let instance = self.instance.eval(footprint).await;
+	let random_scale_min = random_scale_min as f64;
+	let random_scale_max = random_scale_max as f64;
+	let random_rotation = random_rotation as f64;
 
 	let points_list = points.subpaths.iter().flat_map(|s| s.anchors());
 
 	let instance_bounding_box = instance.bounding_box(DAffine2::IDENTITY).unwrap_or_default();
 	let instance_center = -0.5 * (instance_bounding_box[0] + instance_bounding_box[1]);
 
+	let mut rng = rand::rngs::StdRng::seed_from_u64(0);
+
 	let mut result = I::default();
 	for point in points_list {
-		let translation = points.transform.transform_point2(point) + instance_center;
-		result.concat(&instance, DAffine2::from_translation(translation));
+		let center_transform = DAffine2::from_translation(instance_center);
+
+		let translation = points.transform.transform_point2(point);
+
+		let rotation = (rng.gen::<f64>() - 0.5) * random_rotation;
+		let rotation = rotation / 360. * std::f64::consts::TAU;
+
+		let scale = random_scale_min + rng.gen::<f64>() * (random_scale_max - random_scale_min);
+		let scale = DVec2::splat(scale);
+
+		result.concat(&instance, DAffine2::from_scale_angle_translation(scale, rotation, translation) * center_transform);
 	}
 
 	result

node-graph/interpreted-executor/src/node_registry.rs

@@ -732,8 +732,8 @@ fn node_registry() -> HashMap<ProtoNodeIdentifier, HashMap<NodeIOTypes, NodeCons
 		)],
 		register_node!(graphene_std::raster::SampleNode<_>, input: Footprint, params: [ImageFrame<Color>]),
 		register_node!(graphene_std::raster::MandelbrotNode, input: Footprint, params: []),
-		async_node!(graphene_core::vector::CopyToPoints<_, _>, input: Footprint, output: VectorData, fn_params: [Footprint => VectorData, Footprint => VectorData]),
-		async_node!(graphene_core::vector::CopyToPoints<_, _>, input: Footprint, output: GraphicGroup, fn_params: [Footprint => VectorData, Footprint => GraphicGroup]),
+		async_node!(graphene_core::vector::CopyToPoints<_, _, _, _, _>, input: Footprint, output: VectorData, fn_params: [Footprint => VectorData, Footprint => VectorData, () => f32, () => f32, () => f32]),
+		async_node!(graphene_core::vector::CopyToPoints<_, _, _, _, _>, input: Footprint, output: GraphicGroup, fn_params: [Footprint => VectorData, Footprint => GraphicGroup, () => f32, () => f32, () => f32]),
 		async_node!(graphene_core::vector::SamplePoints<_, _, _, _, _, _>, input: Footprint, output: VectorData, fn_params: [Footprint => VectorData, () => f32, () => f32, () => f32, () => bool, Footprint => Vec<Vec<f64>>]),
 		register_node!(graphene_core::vector::PoissonDiskPoints<_>, input: VectorData, params: [f32]),
 		register_node!(graphene_core::vector::LengthsOfSegmentsOfSubpaths, input: VectorData, params: []),