Fold: update UI, add plane -> hemioctahedron

1 files changed, 54 insertions, 29 deletions

diff --git a/Scripts/Fold/Editor/README.md b/Scripts/Fold/Editor/README.md
index 8305abf..d2b7494 100644
--- a/Scripts/Fold/Editor/README.md
+++ b/Scripts/Fold/Editor/README.md
@@ -1,14 +1,28 @@
-# Vertex Deformation Fluent Builder
+# Fold - Vertex Deformation Pipeline Builder
 
-A simple, code-first API for building vertex deformation pipelines without visual node editors.
+A visual editor and fluent API for building vertex deformation pipelines.
 
 ## Quick Start
 
+### Using the Editor Window
+
+Open `Tools > yum_food > Fold` to access the dockable pipeline editor:
+
+1. Select a target material
+2. Click "Add Operation" to add deformation operations
+3. Configure parameters for each operation
+4. Reorder operations with ▲▼ buttons
+5. Click "Apply to Material" to write the pipeline to the material
+
+Use "Load Presets" for common pipelines.
+
+### Using the Fluent API
+
 ```csharp
 using UnityEngine;
 
 // Apply to a material
-VertexDeformationBuilder.Create()
+FoldPipelineBuilder.Create()
     .For(material)
     .TubeToPlane(Vector3.zero, Vector3.right, Vector3.forward, 1f)
     .NormConversion(2f, 1f, 1f)
@@ -28,6 +42,15 @@ Unfolds a tube into a plane.
 Folds a plane into a tube.
 - Same parameters as TubeToPlane
 
+### PlaneToHemiOctahedron(p, r, s, t)
+Maps a plane to a hemi-octahedron (half octahedron) shape.
+- `p`: Origin point (Vector3)
+- `r`: R axis direction (Vector3)
+- `s`: S axis direction (Vector3)
+- `t`: Interpolation factor (float, 0-1)
+
+Useful for creating dome-like or hemisphere projections from planar geometry.
+
 ### PointAlign(po, pp, r, t)
 Aligns geometry to a point.
 - `po`: Original point (Vector3)
@@ -66,47 +89,53 @@ Applies fractal Brownian motion deformation.
 ### Custom(opcode, f0-f3, v0-v3)
 For advanced use cases or custom opcodes.
 
-## Presets
+## Presets (Code)
 
-Use built-in presets from anywhere:
+Use built-in presets from code:
 
 ```csharp
-VertexDeformationPresets.TubeToPlaneFull(material);
-VertexDeformationPresets.NormConvL2ToL1(material);
-VertexDeformationPresets.NormConvL2ToLinf(material);
+FoldPresets.TubeToPlaneFull(material);
+FoldPresets.NormConvL2ToL1(material);
+FoldPresets.NormConvL2ToLinf(material);
 ```
 
-## GUI Window
+## Adding Custom Presets
 
-Open `Window > Vertex Deformation Presets` for a GUI with buttons for common operations.
+Edit `FoldEditorWindow.cs` to add presets to the "Load Presets" menu:
 
-## Adding Custom Presets
+```csharp
+// In ShowPresetsMenu():
+menu.AddItem(new GUIContent("My Custom Effect"), false, () => LoadPreset_MyEffect());
+
+// Add the preset loader method:
+void LoadPreset_MyEffect()
+{
+    operations.Clear();
+    AddOperation(new TubeToPlaneOp());
+    var norm = new NormConversionOp();
+    norm.inputK = 2f;
+    norm.outputK = 1f;
+    AddOperation(norm);
+}
+```
 
-1. Edit `VertexDeformationPresets` class:
+Or use the fluent API in code:
 
 ```csharp
 public static void MyCustomEffect(Material mat) =>
-    VertexDeformationBuilder.Create()
+    FoldPipelineBuilder.Create()
         .For(mat)
         .TubeToPlane(Vector3.zero, Vector3.right, Vector3.forward, 1f)
         .NormConversion(2f, 1f, 0.5f)
-        .Seal(0.1f, 2f, 0.8f, 1f)
         .Apply();
 ```
 
-2. Add button in `VertexDeformationEditorWindow`:
-
-```csharp
-if (GUILayout.Button("My Custom Effect"))
-    VertexDeformationPresets.MyCustomEffect(targetMaterial);
-```
-
 ## Pipeline Chaining
 
 Operations are applied in the order they're chained:
 
 ```csharp
-VertexDeformationBuilder.Create()
+FoldPipelineBuilder.Create()
     .For(material)
     .TubeToPlane(...)     // Step 1
     .NormConversion(...)  // Step 2
@@ -119,13 +148,9 @@ The shader supports up to 16 operations per material.
 
 ## Clearing Deformations
 
-```csharp
-// Via GUI: Use "Clear All Deformations" button
+In the Fold window, click "Clear All" to remove all operations from the pipeline.
 
-// Via code:
+Via code:
+```csharp
 targetMaterial.SetFloat("_Vertex_Deformation_Enabled", 0f);
 ```
-
-## Examples
-
-See `VertexDeformationExamples.cs` for menu items under `Tools > Vertex Deformation > Example: ...`