Add instancing distance culling, scale deformation

* GPU instance distance culling now takes a min/max range
* Fold recovers ops from material, allowing state to persist across
  editor restarts
* Add scale node to vertex deformation framework
* Remove fold presets - dumb LLM idea, unused
* Drop more "undeform" code; unused, was for ray marching, which does
  not work well
* Fix reflection energy compensation; was using cloth math, which makes
  things too bright

1 files changed, 12 insertions, 46 deletions

diff --git a/Scripts/Fold/Editor/FoldPipelineBuilder.cs b/Scripts/Fold/Editor/FoldPipelineBuilder.cs
index 3731cf8..85a7a4f 100755
--- a/Scripts/Fold/Editor/FoldPipelineBuilder.cs
+++ b/Scripts/Fold/Editor/FoldPipelineBuilder.cs
@@ -58,6 +58,7 @@ public class FoldPipelineBuilder
         public const int FBM = 8;
         public const int PlaneToHemiOctahedron = 9;
         public const int HemiOctahedronToPlane = 10;
+        public const int Scale = 11;
     }
 
     FoldPipelineBuilder() { }
@@ -109,6 +110,17 @@ public class FoldPipelineBuilder
         return this;
     }
 
+    public FoldPipelineBuilder Scale(Vector3 k, float t)
+    {
+        slots.Add(new FoldSlot
+        {
+            opcode = Opcodes.Scale,
+            vec0 = k,
+            float0 = t
+        });
+        return this;
+    }
+
     public FoldPipelineBuilder HemiOctahedronToPlane(Vector3 p, Vector3 r, Vector3 s, float t)
     {
         slots.Add(new FoldSlot
@@ -236,49 +248,3 @@ public class FoldPipelineBuilder
 
     public int Count => slots.Count;
 }
-
-public static class FoldPresets
-{
-    public static void TubeToPlaneFull(Material mat) =>
-        FoldPipelineBuilder.Create()
-            .For(mat)
-            .TubeToPlane(Vector3.zero, Vector3.right, Vector3.forward, 1f)
-            .Apply();
-
-    public static void PlaneToTubeFull(Material mat) =>
-        FoldPipelineBuilder.Create()
-            .For(mat)
-            .PlaneToTube(Vector3.zero, Vector3.right, Vector3.forward, 1f)
-            .Apply();
-
-    public static void PlaneToHemiOctahedronFull(Material mat) =>
-        FoldPipelineBuilder.Create()
-            .For(mat)
-            .PlaneToHemiOctahedron(Vector3.zero, Vector3.right, Vector3.forward, 1f)
-            .Apply();
-
-    public static void TubeToPlaneThenNormConv(Material mat) =>
-        FoldPipelineBuilder.Create()
-            .For(mat)
-            .TubeToPlane(Vector3.zero, Vector3.right, Vector3.forward, 1f)
-            .NormConversion(2f, 1f, 1f)
-            .Apply();
-
-    public static void NormConvL1ToL2(Material mat) =>
-        FoldPipelineBuilder.Create()
-            .For(mat)
-            .NormConversion(1f, 2f, 1f)
-            .Apply();
-
-    public static void NormConvL2ToL1(Material mat) =>
-        FoldPipelineBuilder.Create()
-            .For(mat)
-            .NormConversion(2f, 1f, 1f)
-            .Apply();
-
-    public static void NormConvL2ToLinf(Material mat) =>
-        FoldPipelineBuilder.Create()
-            .For(mat)
-            .NormConversion(2f, float.PositiveInfinity, 1f)
-            .Apply();
-}