New node: Heart

node-graph/libraries/vector-types/src/subpath/core.rs

@@ -379,6 +379,43 @@ impl<PointId: Identifier> Subpath<PointId> {
 
 		Self::new(manipulator_groups, false)
 	}
+
+	pub fn new_heart(center: DVec2, radius: f64, cleft_angle: f64, tip_angle: f64, bulb_height: f64, bulb_expand: f64, cleft_depth: f64, tip_depth: f64) -> Self {
+		// Anchors
+		let top_anchor = center - DVec2::new(0., radius * cleft_depth);
+		let bottom_anchor = center + DVec2::new(0., radius * tip_depth);
+
+		let side_x = radius;
+		// Offset is for less squat shape (-0.25).
+		let right_anchor = DVec2::new(
+			center.x + side_x * (1. + bulb_expand),
+			(center.y + radius * (bulb_height - 0.25)) * (1. + bulb_expand) - center.y * bulb_expand,
+		);
+		let left_anchor = DVec2::new(
+			center.x - side_x * (1. + bulb_expand),
+			(center.y + radius * (bulb_height - 0.25)) * (1. + bulb_expand) - center.y * bulb_expand,
+		);
+
+		// Handle Directions
+		let (top_sin, top_cos) = cleft_angle.sin_cos();
+		let top_dir = DVec2::new(top_sin, -top_cos) * radius * 0.5;
+
+		let (bot_sin, bot_cos) = tip_angle.sin_cos();
+		let bot_dir = DVec2::new(bot_sin, -bot_cos) * radius * 0.45;
+
+		// Side Tangents
+		let side_up = DVec2::new(0., -radius * 0.4);
+		let side_down = DVec2::new(0., radius * 0.5);
+
+		let manipulator_groups = vec![
+			ManipulatorGroup::new(top_anchor, Some(top_anchor + DVec2::new(-top_dir.x, top_dir.y)), Some(top_anchor + top_dir)),
+			ManipulatorGroup::new(right_anchor, Some(right_anchor + side_up), Some(right_anchor + side_down)),
+			ManipulatorGroup::new(bottom_anchor, Some(bottom_anchor + bot_dir), Some(bottom_anchor + DVec2::new(-bot_dir.x, bot_dir.y))),
+			ManipulatorGroup::new(left_anchor, Some(left_anchor + side_down), Some(left_anchor + side_up)),
+		];
+
+		Self::new(manipulator_groups, true)
+	}
 }
 
 pub fn calculate_growth_factor(a: f64, turns: f64, outer_radius: f64, spiral_type: SpiralType) -> f64 {

node-graph/nodes/vector/src/generator_nodes.rs

@@ -145,6 +145,33 @@ fn rectangle<T: CornerRadius>(
 	corner_radius.generate(DVec2::new(width, height), clamped)
 }
 
+/// Generates a heart shape with adjustable proportions.
+#[node_macro::node(category("Vector: Shape"))]
+fn heart(
+	_: impl Ctx,
+	_primary: (),
+	#[unit(" px")]
+	#[default(50.)]
+	radius: f64,
+	#[default(30.)] cleft_angle: f64,
+	#[default(45.)] tip_angle: f64,
+	#[default(0.4)] cleft_depth: f64,
+	#[default(0.9)] tip_depth: f64,
+	#[default(0.)] bulb_height: f64,
+	#[default(0.)] bulb_expand: f64,
+) -> Table<Vector> {
+	Table::new_from_element(Vector::from_subpath(subpath::Subpath::new_heart(
+		DVec2::splat(0.),
+		radius,
+		cleft_angle.to_radians(),
+		tip_angle.to_radians(),
+		bulb_height,
+		bulb_expand,
+		cleft_depth,
+		tip_depth,
+	)))
+}
+
 /// Generates an regular polygon shape like a triangle, square, pentagon, hexagon, heptagon, octagon, or any higher n-gon.
 #[node_macro::node(category("Vector: Shape"))]
 fn regular_polygon<T: AsU64>(