feat: update some nodes a bit

When enabled (default), perturbs each segment's direction vector and
rescales to original length — bends the path without stretching it or
causing fold-back artifacts. When disabled, the original direct point
displacement is used.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Cargo.lock

@@ -66,6 +66,7 @@ checksum = "92ecc6618181def0457392ccd0ee51198e065e016d1d527a7ac1b6dc7c1f09d2"
 name = "leaf"
 version = "0.1.0"
 dependencies = [
+ "glam",
  "nodarium_macros",
  "nodarium_utils",
 ]
@@ -117,6 +118,7 @@ dependencies = [
 name = "noise"
 version = "0.1.0"
 dependencies = [
+ "glam",
  "nodarium_macros",
  "nodarium_utils",
  "noise 0.9.0",

app/src/lib/graph-interface/graph-manager.svelte.ts

@@ -1,4 +1,4 @@
-import { clone } from '$lib/helpers';
+import { clone, debounce } from '$lib/helpers';
 import throttle from '$lib/helpers/throttle';
 import { RemoteNodeRegistry } from '$lib/node-registry/index';
 import type {
@@ -309,17 +309,18 @@ export class GraphManager extends EventEmitter<{
       this.nodes.set(n.id, n);
     }
 
-    this.edges = graph.edges.map((edge) => {
+    this.edges = graph.edges.flatMap((edge) => {
       const from = this.nodes.get(edge[0]);
       const to = this.nodes.get(edge[2]);
       if (!from || !to) {
-        throw new Error('Edge references non-existing node');
+        log.warn('Dropping orphaned edge', edge);
+        return [];
       }
       from.state.children = from.state.children || [];
       from.state.children.push(to);
       to.state.parents = to.state.parents || [];
       to.state.parents.push(from);
-      return [from, edge[1], to, edge[3]] as Edge;
+      return [[from, edge[1], to, edge[3]] as Edge];
     });
 
     this.execute();
@@ -657,9 +658,9 @@ export class GraphManager extends EventEmitter<{
     const inputs = Object.entries(to.state?.type?.inputs ?? {});
     const outputs = from.state?.type?.outputs ?? [];
     for (let i = 0; i < inputs.length; i++) {
-      const [inputName, input] = inputs[0];
+      const [inputName, input] = inputs[i];
       for (let o = 0; o < outputs.length; o++) {
-        const output = outputs[0];
+        const output = outputs[o];
         if (input.type === output) {
           return this.createEdge(from, o, to, inputName);
         }
@@ -1239,20 +1240,18 @@ export class GraphManager extends EventEmitter<{
     this.save();
   }
 
+  private _emitSave = debounce(() => {
+    if (this.nodes.size === 0 && this.edges.length === 0) return;
+    const state = this.serialize();
+    this.emit('save', state);
+    log.log('saving graphs', state);
+  }, 300);
+
   save() {
     if (this.currentUndoGroup) return;
-    const state = this.serialize();
+    // History snapshot is immediate; the IDB emit is debounced.
-    this.history.save(state);
+    this.history.save(this.serialize());
-
+    this._emitSave();
-    // This is some stupid race condition where the graph-manager emits a save event
-    // when the graph is not fully loaded
-    if (this.nodes.size === 0 && this.edges.length === 0) {
-      return;
-    }
-
-    const fullState = this.serialize();
-    this.emit('save', fullState);
-    log.log('saving graphs', fullState);
   }
 
   getParentsOfNode(node: NodeInstance) {

app/src/lib/graph-interface/graph-state.svelte.ts

@@ -1,4 +1,4 @@
-import { animate, lerp } from '$lib/helpers';
+import { animate, debounce, lerp } from '$lib/helpers';
 import type { NodeInstance, SerializedEdge, SerializedNode, Socket } from '@nodarium/types';
 import { getContext, setContext } from 'svelte';
 import { SvelteMap, SvelteSet } from 'svelte/reactivity';
@@ -62,12 +62,20 @@ export class GraphState {
   colors = new ColorGenerator(predefinedColors);
 
   constructor(private graph: GraphManager) {
+    const saveCameraPosition = debounce(() => {
+      localStorage.setItem(
+        'cameraPosition',
+        `[${this.cameraPosition[0]},${this.cameraPosition[1]},${this.cameraPosition[2]}]`
+      );
+    }, 500);
+
     $effect.root(() => {
       $effect(() => {
-        localStorage.setItem(
+        // Read values to subscribe to reactivity, then flush lazily.
-          'cameraPosition',
+        void this.cameraPosition[0];
-          `[${this.cameraPosition[0]},${this.cameraPosition[1]},${this.cameraPosition[2]}]`
+        void this.cameraPosition[1];
-        );
+        void this.cameraPosition[2];
+        saveCameraPosition();
       });
     });
     const storedPosition = localStorage.getItem('cameraPosition');
@@ -157,6 +165,27 @@ export class GraphState {
     this.edges.delete(edgeId);
   }
 
+  private _dirtyPositions = new Set<NodeInstance>();
+  private _positionFlushPending = false;
+
+  private _flushPositions() {
+    for (const node of this._dirtyPositions) {
+      if (node.state['x'] !== undefined && node.state['y'] !== undefined) {
+        if (node.state.ref) {
+          node.state.ref.style.setProperty('--nx', `${node.state.x * 10}px`);
+          node.state.ref.style.setProperty('--ny', `${node.state.y * 10}px`);
+        }
+      } else {
+        if (node.state.ref) {
+          node.state.ref.style.setProperty('--nx', `${node.position[0] * 10}px`);
+          node.state.ref.style.setProperty('--ny', `${node.position[1] * 10}px`);
+        }
+      }
+    }
+    this._dirtyPositions.clear();
+    this._positionFlushPending = false;
+  }
+
   updateNodePosition(node: NodeInstance) {
     if (
       node.state.x === node.position[0]
@@ -166,16 +195,10 @@ export class GraphState {
       delete node.state.y;
     }
 
-    if (node.state['x'] !== undefined && node.state['y'] !== undefined) {
+    this._dirtyPositions.add(node);
-      if (node.state.ref) {
+    if (!this._positionFlushPending) {
-        node.state.ref.style.setProperty('--nx', `${node.state.x * 10}px`);
+      this._positionFlushPending = true;
-        node.state.ref.style.setProperty('--ny', `${node.state.y * 10}px`);
+      requestAnimationFrame(() => this._flushPositions());
-      }
-    } else {
-      if (node.state.ref) {
-        node.state.ref.style.setProperty('--nx', `${node.position[0] * 10}px`);
-        node.state.ref.style.setProperty('--ny', `${node.position[1] * 10}px`);
-      }
     }
   }
 

app/src/lib/graph-interface/graph/drop.events.ts

@@ -1,4 +1,5 @@
 import { GraphSchema, type NodeId } from '@nodarium/types';
+import { toast } from '@nodarium/ui';
 import type { GraphManager } from '../graph-manager.svelte';
 import type { GraphState } from '../graph-state.svelte';
 
@@ -41,6 +42,9 @@ export class FileDropEventManager {
           props,
           position: pos
         });
+      }).catch((e) => {
+        toast(`Failed to load node: ${nodeId}`, 'error');
+        console.error(e);
       });
     } else if (event.dataTransfer.files.length) {
       const file = event.dataTransfer.files[0];
@@ -65,8 +69,13 @@ export class FileDropEventManager {
         reader.onload = (e) => {
           const buffer = e.target?.result as ArrayBuffer;
           if (buffer) {
-            const state = GraphSchema.parse(JSON.parse(buffer.toString()));
+            try {
-            this.graph.load(state);
+              const state = GraphSchema.parse(JSON.parse(buffer.toString()));
+              this.graph.load(state);
+            } catch (e) {
+              toast('Failed to load graph: invalid file', 'error');
+              console.error(e);
+            }
           }
         };
         reader.readAsText(file);

app/src/lib/graph-interface/graph/mouse.events.ts

@@ -9,6 +9,7 @@ import { EdgeInteractionManager } from './edge.events';
 
 export class MouseEventManager {
   edgeInteractionManager: EdgeInteractionManager;
+  private pendingSelectionFrame = false;
 
   constructor(
     private graph: GraphManager,
@@ -282,24 +283,31 @@ export class MouseEventManager {
     if (this.state.boxSelection) {
       event.preventDefault();
       event.stopPropagation();
-      const mouseD = this.state.projectScreenToWorld(
+      if (!this.pendingSelectionFrame) {
-        this.state.mouseDown[0],
+        this.pendingSelectionFrame = true;
-        this.state.mouseDown[1]
+        requestAnimationFrame(() => {
-      );
+          this.pendingSelectionFrame = false;
-      const x1 = Math.min(mouseD[0], this.state.mousePosition[0]);
+          if (!this.state.mouseDown) return;
-      const x2 = Math.max(mouseD[0], this.state.mousePosition[0]);
+          const mouseD = this.state.projectScreenToWorld(
-      const y1 = Math.min(mouseD[1], this.state.mousePosition[1]);
+            this.state.mouseDown[0],
-      const y2 = Math.max(mouseD[1], this.state.mousePosition[1]);
+            this.state.mouseDown[1]
-      for (const node of this.graph.nodes.values()) {
+          );
-        if (!node?.state) continue;
+          const x1 = Math.min(mouseD[0], this.state.mousePosition[0]);
-        const x = node.position[0];
+          const x2 = Math.max(mouseD[0], this.state.mousePosition[0]);
-        const y = node.position[1];
+          const y1 = Math.min(mouseD[1], this.state.mousePosition[1]);
-        const height = getNodeHeight(node.state.type!);
+          const y2 = Math.max(mouseD[1], this.state.mousePosition[1]);
-        if (x > x1 - 20 && x < x2 && y > y1 - height && y < y2) {
+          for (const node of this.graph.nodes.values()) {
-          this.state.selectedNodes?.add(node.id);
+            if (!node?.state) continue;
-        } else {
+            const x = node.position[0];
-          this.state.selectedNodes?.delete(node.id);
+            const y = node.position[1];
-        }
+            const height = getNodeHeight(node.state.type!);
+            if (x > x1 - 20 && x < x2 && y > y1 - height && y < y2) {
+              this.state.selectedNodes?.add(node.id);
+            } else {
+              this.state.selectedNodes?.delete(node.id);
+            }
+          }
+        });
       }
       return;
     }

app/src/lib/graph-interface/helpers/nodeHelpers.ts

@@ -38,7 +38,7 @@ export function serializeNode(node: SerializedNode | NodeInstance): SerializedNo
     id: node.id,
     position: [...node.position],
     type: node.type,
-    props: node.props
+    props: node.props ? JSON.parse(JSON.stringify(node.props)) : undefined
   };
 }
 

app/src/lib/node-registry/node-registry-client.ts

@@ -141,6 +141,7 @@ export class RemoteNodeRegistry implements NodeRegistry {
       wrapper = createWasmWrapper(wasmBuffer);
     } catch (error) {
       console.error(`Failed to create node wrapper for node: ${id}`, error);
+      throw error;
     }
 
     const rawDefinition = wrapper.get_definition();

app/src/lib/project-manager/project-manager.svelte.ts

@@ -19,7 +19,7 @@ export class ProjectManager {
   }
 
   async saveGraph(g: Graph) {
-    db.saveGraph(g);
+    await db.saveGraph(g);
   }
 
   private async init() {

app/src/lib/result-viewer/debug.ts

@@ -32,7 +32,7 @@ function writePath(scene: Group, data: Int32Array): Vector3[] {
 
   // Instanced spheres at points
   if (positions.length > 0) {
-    const sphereGeometry = new SphereGeometry(0.05, 8, 8); // keep low-poly
+    const sphereGeometry = new SphereGeometry(0.02, 8, 8); // keep low-poly
     const sphereMaterial = new MeshBasicMaterial({
       color: 0xff0000,
       depthTest: false

app/src/lib/result-viewer/geometryPool.ts

@@ -207,6 +207,7 @@ export function createInstancedGeometryPool(
       existingInstance
       && instanceCount > existingInstance.geometry.userData.count
     ) {
+      existingInstance.geometry.dispose();
       scene.remove(existingInstance);
       instances.splice(instances.indexOf(existingInstance), 1);
       existingInstance = new InstancedMesh(geometry, material, instanceCount);

app/src/lib/runtime/remote-runtime-executor.ts

@@ -1,18 +0,0 @@
-import type { Graph, RuntimeExecutor } from '@nodarium/types';
-
-export class RemoteRuntimeExecutor implements RuntimeExecutor {
-  constructor(private url: string) {}
-
-  async execute(graph: Graph, settings: Record<string, unknown>): Promise<Int32Array> {
-    const res = await fetch(this.url, {
-      method: 'POST',
-      body: JSON.stringify({ graph, settings })
-    });
-
-    if (!res.ok) {
-      throw new Error(`Failed to execute graph`);
-    }
-
-    return new Int32Array(await res.arrayBuffer());
-  }
-}

app/src/lib/runtime/runtime-executor.ts

@@ -134,6 +134,14 @@ function getValue(input: NodeInput, value?: unknown) {
     return encodeFloat(value as number);
   }
 
+  if (input.type === 'select' && typeof value !== 'number') {
+    const index = input.options?.indexOf(value as string);
+    if (index === undefined || index < 0) {
+      throw new Error(`Unknown value ${value} for select input ${input.label}`);
+    }
+    return index;
+  }
+
   if (Array.isArray(value)) {
     if (input.type === 'vec3' || input.type === 'shape') {
       return [
@@ -159,6 +167,8 @@ function getValue(input: NodeInput, value?: unknown) {
     return value;
   }
 
+  console.log({ input, value });
+
   throw new Error(`Unknown input type ${input.type}`);
 }
 
@@ -173,9 +183,7 @@ export class MemoryRuntimeExecutor implements RuntimeExecutor {
   constructor(
     private registry: NodeRegistry,
     public cache?: SyncCache<Int32Array>
-  ) {
+  ) {}
-    this.cache = undefined;
-  }
 
   private async getNodeDefinitions(graph: Graph) {
     if (this.registry.status !== 'ready') {
@@ -399,7 +407,7 @@ export class MemoryRuntimeExecutor implements RuntimeExecutor {
         log.groupEnd();
       } catch (e) {
         log.groupEnd();
-        log.error(`Error executing node ${node_type.id || node.id}`, e);
+        throw e;
       }
     }
 

app/src/lib/runtime/worker-runtime-executor-backend.ts

@@ -2,6 +2,7 @@ import { debugNode } from '$lib/node-registry/debugNode';
 import { IndexDBCache, RemoteNodeRegistry } from '$lib/node-registry/index';
 import type { Graph } from '@nodarium/types';
 import { createPerformanceStore } from '@nodarium/utils';
+import * as Comlink from 'comlink';
 import { MemoryRuntimeExecutor } from './runtime-executor';
 import { MemoryRuntimeCache } from './runtime-executor-cache';
 
@@ -38,6 +39,9 @@ export async function executeGraph(
   performanceStore.startRun();
   const res = await executor.execute(graph, settings);
   performanceStore.stopRun();
+  if (res?.buffer) {
+    return Comlink.transfer(res, [res.buffer]);
+  }
   return res;
 }
 

app/src/lib/runtime/worker-runtime-executor.ts

@@ -12,8 +12,8 @@ export class WorkerRuntimeExecutor implements RuntimeExecutor {
   getPerformanceData() {
     return this.worker.getPerformanceData();
   }
-  getDebugData() {
+  async getDebugData() {
-    return this.worker.getDebugData();
+    return await this.worker.getDebugData();
   }
   set useRuntimeCache(useCache: boolean) {
     this.worker.setUseRuntimeCache(useCache);

app/src/routes/+page.svelte

@@ -7,7 +7,7 @@
   import { debugNode } from '$lib/node-registry/debugNode';
   import { groupNode } from '$lib/node-registry/groupNode.js';
   import { IndexDBCache, RemoteNodeRegistry } from '$lib/node-registry/index';
-  import NodeStore from '$lib/node-store/NodeStore.svelte';
+
   import PerformanceViewer from '$lib/performance/PerformanceViewer.svelte';
   import { ProjectManager } from '$lib/project-manager/project-manager.svelte';
   import ProjectManagerEl from '$lib/project-manager/ProjectManager.svelte';
@@ -35,6 +35,7 @@
 
   let performanceStore = createPerformanceStore();
   let planty = $state<ReturnType<typeof Planty>>();
+  let pendingSave = false;
 
   const { data } = $props();
 
@@ -52,8 +53,8 @@
   );
 
   $effect(() => {
-    workerRuntime.useRegistryCache = appSettings.value.debug.cache.useRuntimeCache;
+    workerRuntime.useRegistryCache = appSettings.value.debug.cache.useRegistryCache;
-    workerRuntime.useRuntimeCache = appSettings.value.debug.cache.useRegistryCache;
+    workerRuntime.useRuntimeCache = appSettings.value.debug.cache.useRuntimeCache;
 
     if (appSettings.value.debug.cache.useRegistryCache) {
       nodeRegistry.cache = registryCache;
@@ -68,6 +69,16 @@
     }
   });
 
+  $effect(() => {
+    const handler = (e: BeforeUnloadEvent) => {
+      if (pendingSave) {
+        e.preventDefault();
+      }
+    };
+    window.addEventListener('beforeunload', handler);
+    return () => window.removeEventListener('beforeunload', handler);
+  });
+
   let activeNode = $state<NodeInstance | undefined>(undefined);
   let scene = $state<Group>(null!);
   let isExecuting = $state(false);
@@ -288,7 +299,11 @@
             bind:showHelp={appSettings.value.nodeInterface.showHelp}
             bind:settings={graphSettings}
             bind:settingTypes={graphSettingTypes}
-            onsave={(g) => pm.saveGraph(g)}
+            onsave={async (g) => {
+              pendingSave = true;
+              await pm.saveGraph(g);
+              pendingSave = false;
+            }}
             onresult={(result) => handleUpdate(result as Graph)}
           />
         {/key}
@@ -317,15 +332,7 @@
         <Panel id="exports" title="Exporter" icon="i-[tabler--package-export]">
           <ExportSettings {scene} />
         </Panel>
-        {#if 0 > 1}
+
-          <Panel
-            id="node-store"
-            title="Node Store"
-            icon="i-[tabler--database] bg-green-400"
-          >
-            <NodeStore registry={nodeRegistry} />
-          </Panel>
-        {/if}
         <Panel
           id="performance"
           title="Performance"

nodes/max/plantarium/branch/src/input.json

@@ -83,6 +83,14 @@
       "min": 0,
       "max": 360,
       "step": 0.01,
+      "value": 137.5
+    },
+    "angle": {
+      "type": "float",
+      "description": "Upward tilt of branches. 0 = horizontal, positive = upward, negative = drooping.",
+      "min": -90,
+      "max": 90,
+      "step": 1,
       "value": 0
     }
   }

nodes/max/plantarium/branch/src/lib.rs

@@ -78,7 +78,9 @@ pub fn execute(input: &[i32]) -> Vec<i32> {
                 continue;
             }
 
-            let branch_direction = rotate_vector_by_angle(orthogonal, direction, rotation_angle);
+            let up_angle = evaluate_float(args[10]) * PI / 180.0;
+            let tilted = (orthogonal * up_angle.cos() + direction * up_angle.sin()).normalize();
+            let branch_direction = rotate_vector_by_angle(tilted, direction, rotation_angle);
 
             log!(
                 "BRANCH depth: {}, branch_origin: {:?}, direction_at: {:?}, branch_direction: {:?}",

nodes/max/plantarium/gravity/src/input.json

@@ -13,19 +13,28 @@
       "max": 1,
       "value": 1
     },
-    "curviness": {
-      "type": "float",
-      "hidden": true,
-      "min": 0,
-      "max": 1,
-      "value": 0.5
-    },
     "depth": {
       "type": "integer",
       "min": 1,
       "max": 10,
       "hidden": true,
       "value": 1
+    },
+    "elasticity": {
+      "type": "float",
+      "description": "How rigid the stem is. 0 = rope (uniform droop), 1 = stiff rod (only the tip bends).",
+      "min": 0,
+      "max": 1,
+      "step": 0.05,
+      "value": 0.3
+    },
+    "mode": {
+      "type": "select",
+      "internal": true,
+      "label": "Mode",
+      "options": ["closed-form", "chain"],
+      "hidden": true,
+      "description": "closed-form lerps each segment toward gravity; chain is a forward-kinematic cantilever where each segment rotates by an angle that grows along the stem."
     }
   }
 }

nodes/max/plantarium/gravity/src/lib.rs

@@ -20,7 +20,11 @@ pub fn execute(input: &[i32]) -> Vec<i32> {
     let args = split_args(input);
 
     let plants = split_args(args[0]);
-    let depth = evaluate_int(args[3]);
+    let depth = evaluate_int(args[2]);
+    let elasticity = evaluate_float(args[3]).clamp(0.0, 1.0);
+    let mode = evaluate_int(args[4]); // 0 = closed-form, 1 = verlet
+    // 0 → sqrt (rope), 1 → ~4.5 (only the tip droops)
+    let bend_exponent = 0.5 + elasticity * 4.0;
 
     let mut max_depth = 0;
     for path_data in plants.iter() {
@@ -42,50 +46,124 @@ pub fn execute(input: &[i32]) -> Vec<i32> {
             let mut output_data = path_data.clone();
             let output = wrap_path_mut(&mut output_data);
 
-            let mut offset_vec = Vec3::ZERO;
+            if mode == 1 {
+                // Forward-kinematic cantilever chain. Each segment rotates around
+                // an axis perpendicular to (rest_dir, gravity) by an angle that
+                // grows with alpha along the stem. Positions are built from the
+                // anchored base outward, so segment lengths are preserved by
+                // construction (no iteration, no rescaling, no oscillation).
 
-            for i in 0..path.length - 1 {
+                let raw_strength = evaluate_float(args[1]);
-                let alpha = i as f32 / (path.length - 1) as f32;
+                let gravity_dir = Vec3::new(0.0, -1.0, 0.0);
-                let start_index = i * 4;
 
-                let start_point = Vec3::from_slice(&path.points[start_index..start_index + 3]);
+                // Tip bend angle in radians. PI/2 = horizontal tip at strength=1.
-                let end_point = Vec3::from_slice(&path.points[start_index + 4..start_index + 7]);
+                let max_angle = raw_strength * std::f32::consts::FRAC_PI_2;
 
-                let direction = end_point - start_point;
+                let original: Vec<Vec3> = (0..path.length)
+                    .map(|i| {
+                        let s = i * 4;
+                        Vec3::from_slice(&path.points[s..s + 3])
+                    })
+                    .collect();
 
-                let length = direction.length();
+                let seg_lens: Vec<f32> = (0..path.length - 1)
+                    .map(|i| (original[i + 1] - original[i]).length())
+                    .collect();
+                let rest_dirs: Vec<Vec3> = (0..path.length - 1)
+                    .map(|i| {
+                        let d = original[i + 1] - original[i];
+                        let l = d.length();
+                        if l > 0.0001 { d / l } else { Vec3::Y }
+                    })
+                    .collect();
 
-                let curviness = evaluate_float(args[2]);
+                let mut cur = vec![Vec3::ZERO; path.length];
-                let strength =
+                cur[0] = original[0];
-                    evaluate_float(args[1]) / curviness.max(0.0001) * evaluate_float(args[1]);
 
-                log!(
+                for i in 1..path.length {
-                    "length: {}, curviness: {}, strength: {}",
+                    let seg_idx = i - 1;
-                    length,
+                    let alpha = if path.length > 2 {
-                    curviness,
+                        seg_idx as f32 / (path.length - 2) as f32
-                    strength
+                    } else {
-                );
+                        1.0
+                    };
+                    let bend_angle = max_angle * alpha.powf(bend_exponent);
 
-                let down_point = Vec3::new(0.0, -length * strength, 0.0);
+                    let rest_dir = rest_dirs[seg_idx];
+                    let mut bend_axis = rest_dir.cross(gravity_dir);
+                    let axis_len = bend_axis.length();
+                    bend_axis = if axis_len > 0.0001 {
+                        bend_axis / axis_len
+                    } else {
+                        // rest_dir parallel to gravity — pick an arbitrary
+                        // perpendicular axis to break symmetry.
+                        Vec3::X
+                    };
 
-                let mut mid_point = lerp_vec3(direction, down_point, curviness * alpha.sqrt());
+                    // Rodrigues' rotation formula
+                    let (sin_a, cos_a) = bend_angle.sin_cos();
+                    let bent_dir = rest_dir * cos_a
+                        + bend_axis.cross(rest_dir) * sin_a
+                        + bend_axis * bend_axis.dot(rest_dir) * (1.0 - cos_a);
 
-                if mid_point[0] == 0.0 && mid_point[2] == 0.0 {
+                    cur[i] = cur[i - 1] + bent_dir * seg_lens[seg_idx];
-                    mid_point[0] += 0.0001;
-                    mid_point[2] += 0.0001;
                 }
 
-                // Correct midpoint length
+                for i in 0..path.length {
-                mid_point *= length / mid_point.length();
+                    let s = i * 4;
+                    output.points[s] = cur[i].x;
+                    output.points[s + 1] = cur[i].y;
+                    output.points[s + 2] = cur[i].z;
+                }
+            } else {
+                // Closed-form: per-segment lerp toward a downward vector
+                let mut offset_vec = Vec3::ZERO;
 
-                let final_end_point = start_point + mid_point;
+                for i in 0..path.length - 1 {
-                let offset_end_point = end_point + offset_vec;
+                    let alpha = i as f32 / (path.length - 1) as f32;
+                    let start_index = i * 4;
 
-                output.points[start_index + 4] = offset_end_point[0];
+                    let start_point = Vec3::from_slice(&path.points[start_index..start_index + 3]);
-                output.points[start_index + 5] = offset_end_point[1];
+                    let end_point =
-                output.points[start_index + 6] = offset_end_point[2];
+                        Vec3::from_slice(&path.points[start_index + 4..start_index + 7]);
 
-                offset_vec += final_end_point - end_point;
+                    let direction = end_point - start_point;
+
+                    let length = direction.length();
+
+                    let curviness = elasticity.max(0.0001);
+                    let strength_arg = evaluate_float(args[1]) * 10.0;
+                    let strength = strength_arg / curviness * strength_arg;
+
+                    log!(
+                        "length: {}, curviness: {}, strength: {}",
+                        length,
+                        curviness,
+                        strength
+                    );
+
+                    let down_point = Vec3::new(0.0, -length * strength, 0.0);
+
+                    let mut mid_point =
+                        lerp_vec3(direction, down_point, curviness * alpha.powf(bend_exponent));
+
+                    if mid_point[0] == 0.0 && mid_point[2] == 0.0 {
+                        mid_point[0] += 0.0001;
+                        mid_point[2] += 0.0001;
+                    }
+
+                    // Correct midpoint length
+                    mid_point *= length / mid_point.length();
+
+                    let final_end_point = start_point + mid_point;
+                    let offset_end_point = end_point + offset_vec;
+
+                    output.points[start_index + 4] = offset_end_point[0];
+                    output.points[start_index + 5] = offset_end_point[1];
+                    output.points[start_index + 6] = offset_end_point[2];
+
+                    offset_vec += final_end_point - end_point;
+                }
             }
             output_data
         })

nodes/max/plantarium/leaf/Cargo.toml

@@ -8,5 +8,6 @@ edition = "2018"
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
+glam = "0.30.10"
 nodarium_macros = { version = "0.1.0", path = "../../../../packages/macros" }
 nodarium_utils = { version = "0.1.0", path = "../../../../packages/utils" }

nodes/max/plantarium/leaf/src/input.json

@@ -19,6 +19,33 @@
       "max": 64,
       "value": 1,
       "hidden": true
+    },
+    "yCurve": {
+      "type": "float",
+      "description": "Curl the leaf upward along its length (radians). 0 = flat, ~1.57 = 90° tip curl.",
+      "min": -3.14,
+      "max": 3.14,
+      "step": 0.05,
+      "value": 0,
+      "hidden": true
+    },
+    "yTwist": {
+      "type": "float",
+      "description": "Twist around the leaf's spine. Combined with yCurve, produces a 3D spiral.",
+      "min": -6.28,
+      "max": 6.28,
+      "step": 0.05,
+      "value": 0,
+      "hidden": true
+    },
+    "xCurve": {
+      "type": "float",
+      "description": "Curl each cross-section into an arc, mirrored around the midrib. 0 = flat, ~1.57 = U-shape.",
+      "min": -3.14,
+      "max": 3.14,
+      "step": 0.05,
+      "value": 0,
+      "hidden": true
     }
   }
 }

nodes/max/plantarium/leaf/src/lib.rs

@@ -1,6 +1,7 @@
 use std::convert::TryInto;
 use std::f32::consts::PI;
 
+use glam::Vec3;
 use nodarium_macros::nodarium_definition_file;
 use nodarium_macros::nodarium_execute;
 use nodarium_utils::encode_float;
@@ -42,6 +43,9 @@ pub fn execute(input: &[i32]) -> Vec<i32> {
     let input_path = split_args(args[0])[0];
     let size = evaluate_float(args[1]);
     let width_resolution = evaluate_int(args[2]).max(3) as usize;
+    let y_curve = evaluate_float(args[3]);
+    let y_twist = evaluate_float(args[4]);
+    let x_curve = evaluate_float(args[5]);
     let path_length = (input_path.len() - 4) / 2;
 
     let slice_count = path_length;
@@ -93,27 +97,97 @@ pub fn execute(input: &[i32]) -> Vec<i32> {
 
     // Writing Positions
     let width = 50.0;
+    let leaf_length: f32 = 100.0;
     let mut positions = vec![[0.0f32; 3]; position_amount];
+
+    // Pre-compute a local frame (center, normal=local-Y, binormal=local-X) for
+    // each slice by walking the FK chain. At each step we bend around the
+    // current binormal (curls the leaf) and twist around the current tangent
+    // (rotates the bend plane → spiral).
+    let segs = (slice_count - 1).max(1) as f32;
+    let bend_per_step = y_curve / segs;
+    let twist_per_step = y_twist / segs;
+
+    let mut centers: Vec<Vec3> = Vec::with_capacity(slice_count);
+    let mut frame_n: Vec<Vec3> = Vec::with_capacity(slice_count);
+    let mut frame_b: Vec<Vec3> = Vec::with_capacity(slice_count);
+
+    let mut tangent = Vec3::new(0.0, 0.0, 1.0);
+    let mut normal = Vec3::new(0.0, 1.0, 0.0);
+    let mut binormal = Vec3::new(1.0, 0.0, 0.0);
+
+    let pz_first = decode_float(input_path[2 + 1]);
+    let mut center = Vec3::new(0.0, 0.0, pz_first - leaf_length);
+
     for i in 0..slice_count {
-        let ax = i as f32 / (slice_count -1) as f32;
+        centers.push(center);
+        frame_n.push(normal);
+        frame_b.push(binormal);
 
+        if i + 1 < slice_count {
+            let pz_curr = decode_float(input_path[2 + i * 2 + 1]);
+            let pz_next = decode_float(input_path[2 + (i + 1) * 2 + 1]);
+            let seg_len = pz_next - pz_curr;
+
+            center = center + tangent * seg_len;
+
+            // Bend around binormal — tilts tangent toward normal
+            let (sin_b, cos_b) = bend_per_step.sin_cos();
+            let new_t = tangent * cos_b + normal * sin_b;
+            let new_n = -tangent * sin_b + normal * cos_b;
+            tangent = new_t;
+            normal = new_n;
+
+            // Twist around tangent — rotates normal/binormal so the next bend
+            // happens in a rotated plane
+            let (sin_tw, cos_tw) = twist_per_step.sin_cos();
+            let new_n2 = normal * cos_tw + binormal * sin_tw;
+            let new_b = -normal * sin_tw + binormal * cos_tw;
+            normal = new_n2;
+            binormal = new_b;
+        }
+    }
+
+    for i in 0..slice_count {
+        let ax = i as f32 / segs;
         let px = decode_float(input_path[2 + i * 2 + 0]);
-        let pz = decode_float(input_path[2 + i * 2 + 1]);
+        let hw = width - px; // half-width at this slice
 
+        let c = centers[i];
+        let n = frame_n[i];
+        let b = frame_b[i];
 
         for j in 0..width_resolution {
             let alpha = j as f32 / (width_resolution - 1) as f32;
-            let x = 2.0 * (-px * (alpha - 0.5) + alpha * width);
+            // Signed cross-section parameter, -1 (left edge) → +1 (right edge)
-            let py = calculate_y(alpha-0.5)*5.0*(ax*PI).sin();
+            let t = 2.0 * alpha - 1.0;
-            let pz_val = pz - 100.0;
+            let py_local = calculate_y(alpha - 0.5) * 5.0 * (ax * PI).sin();
+
+            // X-curl: each cross-section traces a circular arc with curvature
+            // x_curve / hw. Because theta = x_curve * t is signed around the
+            // midrib, sin/cos give a mirrored arc (left and right edges curl
+            // the same direction).
+            let theta = x_curve * t;
+            let (sin_t, cos_t) = theta.sin_cos();
+            let (b_arc, n_arc) = if x_curve.abs() < 0.0001 {
+                (t * hw, 0.0)
+            } else {
+                let r = hw / x_curve;
+                (r * sin_t, r * (1.0 - cos_t))
+            };
+            // Cross-section bulge follows the rotated local frame
+            let b_total = b_arc - py_local * sin_t;
+            let n_total = n_arc + py_local * cos_t;
+
+            let world = c + b * b_total + n * n_total;
 
             let pos_idx = i * width_resolution + j;
-            positions[pos_idx] = [x - width, py, pz_val];
+            positions[pos_idx] = [world.x, world.y, world.z];
 
             let flat_idx = offset + pos_idx * 3;
-            out[flat_idx + 0] = encode_float((x - width) * size);
+            out[flat_idx + 0] = encode_float(world.x * size);
-            out[flat_idx + 1] = encode_float(py * size);
+            out[flat_idx + 1] = encode_float(world.y * size);
-            out[flat_idx + 2] = encode_float(pz_val * size);
+            out[flat_idx + 2] = encode_float(world.z * size);
         }
     }
 

nodes/max/plantarium/noise/Cargo.toml

@@ -8,6 +8,7 @@ edition = "2018"
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
+glam = "0.30.10"
 nodarium_macros = { version = "0.1.0", path = "../../../../packages/macros" }
 nodarium_utils = { version = "0.1.0", path = "../../../../packages/utils" }
 noise = "0.9.0"

nodes/max/plantarium/noise/src/input.json

@@ -15,9 +15,9 @@
     },
     "strength": {
       "type": "float",
-      "min": 0.1,
+      "min": 0,
-      "max": 10,
+      "max": 1,
-      "value": 2
+      "value": 0.5
     },
     "fixBottom": {
       "type": "float",
@@ -52,6 +52,12 @@
       "max": 5,
       "value": 1,
       "hidden": true
+    },
+    "preserveLength": {
+      "type": "boolean",
+      "label": "Preserve length",
+      "value": true,
+      "hidden": true
     }
   }
 }

nodes/max/plantarium/noise/src/lib.rs

@@ -1,3 +1,4 @@
+use glam::Vec3;
 use nodarium_macros::nodarium_definition_file;
 use nodarium_macros::nodarium_execute;
 use nodarium_utils::{
@@ -30,6 +31,7 @@ pub fn execute(input: &[i32]) -> Vec<i32> {
     let depth = evaluate_int(args[6]);
 
     let octaves = evaluate_int(args[7]);
+    let preserve_length = evaluate_int(args[8]) != 0;
 
     let noise_x: HybridMulti<OpenSimplex> =
         HybridMulti::new(seed as u32 + 1).set_octaves(octaves as usize);
@@ -65,24 +67,82 @@ pub fn execute(input: &[i32]) -> Vec<i32> {
 
             let length = path.get_length() as f64;
 
-            for i in 0..path.length {
+            if preserve_length {
-                let a = i as f64 / (path.length - 1) as f64;
+                // Snapshot original positions so we can derive each segment's original
+                // direction even after we've modified earlier points.
+                let orig: Vec<f32> = path.points[..path.length * 4].to_vec();
 
-                let px = j as f64 + a * length * scale;
+                // Anchor the base (fix_bottom=1 → scale=0, no displacement at root)
-                let py = a * scale as f64;
+                let scale0 = lerp(1.0, 0.0, fix_bottom);
-
+                path.points[0] += noise_x.get([j as f64, 0.0]) as f32
-                path.points[i * 4] += noise_x.get([px, py]) as f32
                     * directional_strength[0]
                     * strength
-                    * lerp(1.0, a as f32, fix_bottom);
+                    * scale0;
-                path.points[i * 4 + 1] += noise_y.get([px, py]) as f32
+                path.points[1] += noise_y.get([j as f64, 0.0]) as f32
                     * directional_strength[1]
                     * strength
-                    * lerp(1.0, a as f32, fix_bottom);
+                    * scale0;
-                path.points[i * 4 + 2] += noise_z.get([px, py]) as f32
+                path.points[2] += noise_z.get([j as f64, 0.0]) as f32
                     * directional_strength[2]
                     * strength
-                    * lerp(1.0, a as f32, fix_bottom);
+                    * scale0;
+                let mut prev = Vec3::new(path.points[0], path.points[1], path.points[2]);
+
+                for i in 1..path.length {
+                    let a = i as f64 / (path.length - 1) as f64;
+                    let px = j as f64 + a * length * scale;
+                    let py = a * scale as f64;
+                    let sf = lerp(1.0, a as f32, fix_bottom);
+
+                    let orig_dir = Vec3::new(
+                        orig[i * 4] - orig[(i - 1) * 4],
+                        orig[i * 4 + 1] - orig[(i - 1) * 4 + 1],
+                        orig[i * 4 + 2] - orig[(i - 1) * 4 + 2],
+                    );
+                    let orig_len = orig_dir.length();
+
+                    let perturb = Vec3::new(
+                        noise_x.get([px, py]) as f32 * directional_strength[0] * strength * sf,
+                        noise_y.get([px, py]) as f32 * directional_strength[1] * strength * sf,
+                        noise_z.get([px, py]) as f32 * directional_strength[2] * strength * sf,
+                    );
+
+                    // Perturb the original direction and rescale to original length.
+                    // Biasing toward orig_dir prevents the segment from folding back.
+                    let mut new_dir = orig_dir + perturb;
+                    let nd_len = new_dir.length();
+                    if nd_len > 0.0001 && orig_len > 0.0001 {
+                        new_dir *= orig_len / nd_len;
+                    } else {
+                        new_dir = orig_dir;
+                    }
+
+                    let cur = prev + new_dir;
+                    path.points[i * 4] = cur.x;
+                    path.points[i * 4 + 1] = cur.y;
+                    path.points[i * 4 + 2] = cur.z;
+                    prev = cur;
+                }
+            } else {
+                for i in 0..path.length {
+                    let a = i as f64 / (path.length - 1) as f64;
+                    let px = j as f64 + a * length * scale;
+                    let py = a * scale as f64;
+                    let sf = lerp(1.0, a as f32, fix_bottom);
+
+                    path.points[i * 4] += noise_x.get([px, py]) as f32
+                        * directional_strength[0]
+                        * strength
+                        * sf;
+                    path.points[i * 4 + 1] += noise_y.get([px, py]) as f32
+                        * directional_strength[1]
+                        * strength
+                        * sf;
+                    path.points[i * 4 + 2] += noise_z.get([px, py]) as f32
+                        * directional_strength[2]
+                        * strength
+                        * sf;
+                }
             }
             path_data
         })

nodes/max/plantarium/rotate/src/input.json

@@ -29,7 +29,7 @@
       "type": "boolean",
       "internal": true,
       "hidden": true,
-      "value": true,
+      "value": false,
       "description": "If multiple objects are connected, should we rotate them as one or spread them?"
     }
   }

packages/types/src/inputs.ts

@@ -105,7 +105,6 @@ export const NodeInputSchema = z.union([
   NodeInputIntegerSchema,
   NodeInputShapeSchema,
   NodeInputSelectSchema,
-  NodeInputSeedSchema,
   NodeInputVec3Schema,
   NodeInputGeometrySchema,
   NodeInputPathSchema,

packages/ui/src/lib/JsonViewer.svelte

@@ -33,6 +33,7 @@
 <script lang="ts">
   import { browser } from '$app/environment';
   import JsonViewer from './JsonViewer.svelte';
+  import { toast } from './toast.svelte';
 
   let {
     value,
@@ -70,6 +71,11 @@
   let prevJson = '';
   let flashTimeout: ReturnType<typeof setTimeout> | null = null;
 
+  function copyValue() {
+    navigator.clipboard.writeText(JSON.stringify(key ? { [key]: value } : value, null, 2));
+    toast('Value copied to clipboard', 'success');
+  }
+
   $effect(() => {
     const json = JSON.stringify(value);
     if (prevJson && json !== prevJson) {
@@ -92,7 +98,7 @@
     <button
       class="text-text hover:bg-layer-3 cursor-pointer"
       title="Copy value"
-      onclick={() => navigator.clipboard.writeText(JSON.stringify({ [key]: value }, null, 2))}
+      onclick={() => copyValue()}
     >
       {key}
     </button><span class="text-text/40">: </span>

packages/ui/src/lib/Toast.svelte

@@ -1,4 +1,5 @@
 <script lang="ts">
+  import { fly, slide } from 'svelte/transition';
   import { toasts } from './toast.svelte';
 
   const typeClasses: Record<string, string> = {
@@ -9,28 +10,22 @@
 </script>
 
 <div
-  class="fixed bottom-4 right-4 flex flex-col gap-2 z-[9999] pointer-events-none"
+  class="fixed bottom-4 right-4 flex flex-col items-end gap-2 z-9999 pointer-events-none"
   role="status"
   aria-live="polite"
   aria-atomic="false"
 >
   {#each toasts.value as item (item.id)}
     <div
+      in:slide={{ duration: 250 }}
+      out:fly={{ x: 100, duration: 250 }}
       class="
         bg-layer-2 text-text border border-outline rounded
-        px-3.5 py-2 text-sm min-w-[180px] max-w-xs
+        px-3.5 py-2 text-sm min-w-45 max-w-xs w-fit
         border-l-3 {typeClasses[item.type] ?? 'border-l-outline'}
-        animate-[slide-in_0.18s_ease]
       "
     >
       {item.message}
     </div>
   {/each}
 </div>
-
-<style>
-  @keyframes slide-in {
-    from { opacity: 0; transform: translateX(12px); }
-    to   { opacity: 1; transform: translateX(0); }
-  }
-</style>