From b7b0607dff0a8e8e2b979707544918afde778ba0 Mon Sep 17 00:00:00 2001
From: carlynorama <carlynorama@gmail.com>
Date: Fri, 22 Sep 2023 12:20:33 -0600
Subject: [PATCH] part 18

---
 .../linked/03_cube_geom_corrected.usd         |   1 +
 explorations/Part_18/hello_ring/ring_v1.txt   |  44 ++++
 .../Part_18/hello_ring/testsketch.txt         |  73 ++++++
 .../testsketch_20230725T085314.usda           | 213 ++++++++++++++++++
 .../hello_ring/testsketch_20230725T085314.x3d | 161 +++++++++++++
 .../cube_base.usd}                            |   5 +-
 .../cube_base_with_purple_linked.usd          |  29 +++
 .../cube_base_with_purple_simple.usd          |  37 +++
 .../Sketching2023/cube_purple_animated.usd    | 127 +++++++++++
 explorations/Sketching2023/materials.usd      |  21 ++
 10 files changed, 708 insertions(+), 3 deletions(-)
 create mode 100644 explorations/Part_18/hello_ring/ring_v1.txt
 create mode 100644 explorations/Part_18/hello_ring/testsketch.txt
 create mode 100644 explorations/Part_18/hello_ring/testsketch_20230725T085314.usda
 create mode 100644 explorations/Part_18/hello_ring/testsketch_20230725T085314.x3d
 rename explorations/{Part_06/sphere_base.usd => Sketching2023/cube_base.usd} (80%)
 create mode 100644 explorations/Sketching2023/cube_base_with_purple_linked.usd
 create mode 100644 explorations/Sketching2023/cube_base_with_purple_simple.usd
 create mode 100644 explorations/Sketching2023/cube_purple_animated.usd
 create mode 100644 explorations/Sketching2023/materials.usd

diff --git a/explorations/Part_02/misc_scratch/linked/03_cube_geom_corrected.usd b/explorations/Part_02/misc_scratch/linked/03_cube_geom_corrected.usd
index e30a285..112aa18 100644
--- a/explorations/Part_02/misc_scratch/linked/03_cube_geom_corrected.usd
+++ b/explorations/Part_02/misc_scratch/linked/03_cube_geom_corrected.usd
@@ -39,6 +39,7 @@ def Xform "Cube"
         }
 
         "green" {
+            over "cubeMesh"
             {
                 rel material:binding = </Cube/Materials/myFlatGreen>
             }
diff --git a/explorations/Part_18/hello_ring/ring_v1.txt b/explorations/Part_18/hello_ring/ring_v1.txt
new file mode 100644
index 0000000..878d689
--- /dev/null
+++ b/explorations/Part_18/hello_ring/ring_v1.txt
@@ -0,0 +1,44 @@
+//
+//  Ring.swift
+//  
+//
+//  Created by Carlyn Maw on 7/25/23.
+//
+
+import Foundation
+
+public struct Ring {
+    public init(count:Int, radius:Int) {
+        self.count = count
+    }
+    let count:Int
+    let minTranslate = -4.0
+    let maxTranslate = 4.0
+    let minRadius = 0.8
+    let maxRadius = 2.0
+    
+    let tau = Double.pi * 2
+
+    public func buildStage() -> Canvas3D {
+        let base_theta = tau/Double(count)
+        let color = 0.5
+        return Canvas3D {
+            Sphere(radius: 1.0).color(red: 0.18, green: 0.18, blue: 0.18)
+             for i in 0..<count {
+                 let theta = base_theta * Double(i)
+                 let x = cos(theta)
+                 let y = sin(theta)
+                 
+                 Sphere(radius: 1.0)
+                 .color(
+                     red: color,
+                     green: color,
+                     blue: color
+                 )
+                 //The ranges are all the same in this case.
+                 .translateBy(Vector(x: x, y: y, z: 0.0))
+             }
+        }
+    }
+
+}
diff --git a/explorations/Part_18/hello_ring/testsketch.txt b/explorations/Part_18/hello_ring/testsketch.txt
new file mode 100644
index 0000000..7084c69
--- /dev/null
+++ b/explorations/Part_18/hello_ring/testsketch.txt
@@ -0,0 +1,73 @@
+//
+//  SketchPadCLI/testsketch.swift
+//
+//
+//  Created by Carlyn Maw on 7/11/25.
+//
+
+import Foundation
+import ArgumentParser
+import SketchPad
+
+
+extension SketchPadCLI {
+    struct testsketch:ParsableCommand {
+        @Flag(name: [.customLong("save"), .customShort("s")], help: "Will save to file called \"testsketch_$TIMESTAMP.usda\" instead of printing to stdout")
+        var saveToFile = false
+        
+        @Option(name: [.customLong("output"), .customShort("o")], help: "Will save to custom path instead of printing to stdout")
+        var customPath:String? = nil
+        
+        @Option(name: [.customLong("count"), .customShort("c")],
+                help: "Number of spheres to generate in addition to the blue origin sphere. Default is 12")
+        var count:Int = 18
+        
+        @Option(name: [.customLong("radius"), .customShort("r")],
+                help: "Number of spheres to generate in addition to the blue origin sphere. Default is 12")
+        var radius:Int = 12
+        
+        
+        static var configuration =
+        CommandConfiguration(abstract: "Generate a USDA file that references sphere_base.usda like previous examples. 12 + blue origin ball is the default count")
+        
+        func run() {
+            let stage = Ring(count:count, radius: 12).buildStage()
+            let fileBuilder_x3d = X3DFileBuilder()//USDAFileBuilder()
+            let fileString_x3d:String = fileBuilder_x3d.generateStringForStage(stage: stage)
+            let fileBuilder_usd = USDAFileBuilder()//USDAFileBuilder()
+            let fileString_usd:String = fileBuilder_usd.generateStringForStage(stage: stage)
+            
+            if saveToFile || customPath != nil {
+                let timeStamp = FileIO.timeStamp()
+                let path = customPath ?? "testsketch_\(timeStamp).usda"
+                saveFile(fileString: fileString_usd, path: path)
+                let path_x3d = "testsketch_\(timeStamp).x3d"
+                saveFile(fileString: fileString_x3d, path: path_x3d)
+            } else {
+                print(fileString_usd)
+                print("------------------")
+                print(fileString_x3d)
+            }
+        }
+        
+        func saveFile(fileString:String, path:String, ext:String? = nil) {
+            do {
+                guard let data:Data = fileString.data(using: .utf8) else {
+                    print("Could not encode string to data")
+                    return
+                }
+                var fullPath:String
+                if let ext {
+                    fullPath = "\(path).\(ext)"
+                } else {
+                    fullPath = path
+                }
+                try FileIO.writeToFile(data: data, filePath: fullPath)
+            } catch {
+                print("Could not write data to file: \(error)")
+            }
+        }
+    }
+    
+    
+}
diff --git a/explorations/Part_18/hello_ring/testsketch_20230725T085314.usda b/explorations/Part_18/hello_ring/testsketch_20230725T085314.usda
new file mode 100644
index 0000000..49e25c5
--- /dev/null
+++ b/explorations/Part_18/hello_ring/testsketch_20230725T085314.usda
@@ -0,0 +1,213 @@
+#usda 1.0
+(
+	metersPerUnit = 1
+	upAxis = "Y"
+	defaultPrim = "Sphere_59699"
+)
+def Xform "Sphere_59699"
+{
+	def Sphere "sphere_59699"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.18, 0.18, 0.18)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_45170"
+{
+	double3 xformOp:translate = (1.0, 0.0, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_45170"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_60450"
+{
+	double3 xformOp:translate = (0.9396926207859084, 0.3420201433256687, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_60450"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_73729"
+{
+	double3 xformOp:translate = (0.766044443118978, 0.6427876096865393, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_73729"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_98021"
+{
+	double3 xformOp:translate = (0.5000000000000001, 0.8660254037844386, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_98021"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_14599"
+{
+	double3 xformOp:translate = (0.17364817766693041, 0.984807753012208, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_14599"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_40284"
+{
+	double3 xformOp:translate = (-0.1736481776669303, 0.984807753012208, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_40284"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_78825"
+{
+	double3 xformOp:translate = (-0.49999999999999983, 0.8660254037844387, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_78825"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_73649"
+{
+	double3 xformOp:translate = (-0.7660444431189779, 0.6427876096865395, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_73649"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_80537"
+{
+	double3 xformOp:translate = (-0.9396926207859083, 0.3420201433256689, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_80537"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_48934"
+{
+	double3 xformOp:translate = (-1.0, 1.2246467991473532e-16, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_48934"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_38944"
+{
+	double3 xformOp:translate = (-0.9396926207859084, -0.34202014332566866, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_38944"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_96720"
+{
+	double3 xformOp:translate = (-0.766044443118978, -0.6427876096865393, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_96720"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_71870"
+{
+	double3 xformOp:translate = (-0.5000000000000004, -0.8660254037844384, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_71870"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_85226"
+{
+	double3 xformOp:translate = (-0.17364817766693033, -0.984807753012208, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_85226"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_13040"
+{
+	double3 xformOp:translate = (0.17364817766692997, -0.9848077530122081, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_13040"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_30100"
+{
+	double3 xformOp:translate = (0.5000000000000001, -0.8660254037844386, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_30100"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_72205"
+{
+	double3 xformOp:translate = (0.7660444431189778, -0.6427876096865396, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_72205"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
+def Xform "Sphere_17832"
+{
+	double3 xformOp:translate = (0.9396926207859081, -0.34202014332566943, 0.0)
+	uniform token[] xformOpOrder = ["xformOp:translate"]
+	def Sphere "sphere_17832"
+	{
+		float3[] extent = [(-1.0, -1.0, -1.0), (1.0, 1.0, 1.0)]
+		color3f[] primvars:displayColor = [(0.5, 0.5, 0.5)]
+		double radius = 1.0
+	}
+}
\ No newline at end of file
diff --git a/explorations/Part_18/hello_ring/testsketch_20230725T085314.x3d b/explorations/Part_18/hello_ring/testsketch_20230725T085314.x3d
new file mode 100644
index 0000000..c054230
--- /dev/null
+++ b/explorations/Part_18/hello_ring/testsketch_20230725T085314.x3d
@@ -0,0 +1,161 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.2//EN"
+                 "http://www.web3d.org/specifications/x3d-3.2.dtd">
+<X3D xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='http://www.web3d.org/specifications/x3d-3.2.xsd' version='3.2' profile='Immersive'>
+	<head>
+		<meta content="SketchPad X3D FileBuilder" name="generator"/>
+		<meta content="25 Jul 2023" name="created"/>
+	</head>
+	<Scene>
+		<Shape>
+			<Appearance>
+				<Material diffuseColor='0.18 0.18 0.18'></Material>
+			</Appearance>
+			<Sphere radius='1.0'></Sphere>
+		</Shape>
+		<Transform translation='1.0 0.0 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='0.9396926207859084 0.3420201433256687 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='0.766044443118978 0.6427876096865393 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='0.5000000000000001 0.8660254037844386 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='0.17364817766693041 0.984807753012208 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='-0.1736481776669303 0.984807753012208 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='-0.49999999999999983 0.8660254037844387 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='-0.7660444431189779 0.6427876096865395 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='-0.9396926207859083 0.3420201433256689 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='-1.0 1.2246467991473532e-16 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='-0.9396926207859084 -0.34202014332566866 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='-0.766044443118978 -0.6427876096865393 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='-0.5000000000000004 -0.8660254037844384 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='-0.17364817766693033 -0.984807753012208 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='0.17364817766692997 -0.9848077530122081 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='0.5000000000000001 -0.8660254037844386 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='0.7660444431189778 -0.6427876096865396 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+		<Transform translation='0.9396926207859081 -0.34202014332566943 0.0'>
+			<Shape>
+				<Appearance>
+					<Material diffuseColor='0.5 0.5 0.5'></Material>
+				</Appearance>
+				<Sphere radius='1.0'></Sphere>
+			</Shape>
+		</Transform>
+	</Scene>
+</X3D>
\ No newline at end of file
diff --git a/explorations/Part_06/sphere_base.usd b/explorations/Sketching2023/cube_base.usd
similarity index 80%
rename from explorations/Part_06/sphere_base.usd
rename to explorations/Sketching2023/cube_base.usd
index f8902d1..b37d5e7 100644
--- a/explorations/Part_06/sphere_base.usd
+++ b/explorations/Sketching2023/cube_base.usd
@@ -11,10 +11,9 @@ def Xform "my_shape"
     double3 xformOp:translate = (0, 0, 0)
     uniform token[] xformOpOrder = ["xformOp:translate"]
 
-    def Sphere "sphere"
+    def Cube "cube"
     {
         float3[] extent = [(-2, -2, -2), (2, 2, 2)]
-        color3f[] primvars:displayColor = [(0, 0, 1)]
         double radius = 2
     }
-}
\ No newline at end of file
+}
diff --git a/explorations/Sketching2023/cube_base_with_purple_linked.usd b/explorations/Sketching2023/cube_base_with_purple_linked.usd
new file mode 100644
index 0000000..2a52e45
--- /dev/null
+++ b/explorations/Sketching2023/cube_base_with_purple_linked.usd
@@ -0,0 +1,29 @@
+#usda 1.0
+(
+    defaultPrim = "my_shape"
+    metersPerUnit = 1
+    upAxis = "Y"
+    doc = "Base shape for amalgamation"
+)
+
+def Xform "my_shape"
+{
+    def "Materials" ( 
+        prepend references = @./materials.usd@
+    )
+    {
+    }
+
+    double3 xformOp:translate = (0, 0, 0)
+    uniform token[] xformOpOrder = ["xformOp:translate"]
+
+    def Cube "cube" (
+        prepend apiSchemas = ["MaterialBindingAPI"]
+    )
+    {
+        rel material:binding = </my_shape/Materials/purple>
+        float3[] extent = [(-2, -2, -2), (2, 2, 2)]
+        double radius = 2
+    }
+}
+
diff --git a/explorations/Sketching2023/cube_base_with_purple_simple.usd b/explorations/Sketching2023/cube_base_with_purple_simple.usd
new file mode 100644
index 0000000..4e38cf1
--- /dev/null
+++ b/explorations/Sketching2023/cube_base_with_purple_simple.usd
@@ -0,0 +1,37 @@
+#usda 1.0
+(
+    defaultPrim = "my_shape"
+    metersPerUnit = 1
+    upAxis = "Y"
+    doc = "Base shape for amalgamation"
+)
+
+def Xform "my_shape"
+{
+    
+    double3 xformOp:translate = (0, 0, 0)
+    uniform token[] xformOpOrder = ["xformOp:translate"]
+
+    def Cube "cube" (
+        prepend apiSchemas = ["MaterialBindingAPI"]
+    )
+    {
+        rel material:binding = </purple>
+        float3[] extent = [(-2, -2, -2), (2, 2, 2)]
+        double radius = 2
+    }
+}
+
+def Material "purple"
+{
+    token outputs:surface.connect = </purple/previewShader.outputs:surface>
+
+    def Shader "previewShader"
+    {
+        uniform token info:id = "UsdPreviewSurface"
+        color3f inputs:diffuseColor = (0.9000001, 0.4429553, 0.72986294)
+        float inputs:metallic = 0.1
+        float inputs:roughness = 0.9
+        token outputs:surface
+    }
+}
\ No newline at end of file
diff --git a/explorations/Sketching2023/cube_purple_animated.usd b/explorations/Sketching2023/cube_purple_animated.usd
new file mode 100644
index 0000000..a594190
--- /dev/null
+++ b/explorations/Sketching2023/cube_purple_animated.usd
@@ -0,0 +1,127 @@
+#usda 1.0
+(
+    defaultPrim = "transformAnimation"
+    endTimeCode = 89
+    startTimeCode = 0
+    timeCodesPerSecond = 24
+    upAxis = "Y"
+)
+
+def Xform "transformAnimation" (
+    assetInfo = {
+        asset identifier = @transformAnimation.usd@
+        string name = "transformAnimation"
+    }
+    kind = "component"
+)
+{
+    def Scope "Geom"
+    {
+        def Xform "xform1"
+        {
+            float xformOp:rotateY.timeSamples = {
+                0: 0,
+                1: 4,
+                2: 8,
+                3: 12,
+                4: 16,
+                5: 20,
+                6: 24,
+                7: 28,
+                8: 32,
+                9: 36,
+                10: 40,
+                11: 44,
+                12: 48,
+                13: 52,
+                14: 56,
+                15: 60,
+                16: 64,
+                17: 68,
+                18: 72,
+                19: 76,
+                20: 80,
+                21: 84,
+                22: 88,
+                23: 92,
+                24: 96,
+                25: 100,
+                26: 104,
+                27: 108,
+                28: 112,
+                29: 116,
+                30: 120,
+                31: 124,
+                32: 128,
+                33: 132,
+                34: 136,
+                35: 140,
+                36: 144,
+                37: 148,
+                38: 152,
+                39: 156,
+                40: 160,
+                41: 164,
+                42: 168,
+                43: 172,
+                44: 176,
+                45: 180,
+                46: 184,
+                47: 188,
+                48: 192,
+                49: 196,
+                50: 200,
+                51: 204,
+                52: 208,
+                53: 212,
+                54: 216,
+                55: 220,
+                56: 224,
+                57: 228,
+                58: 232,
+                59: 236,
+                60: 240,
+                61: 244,
+                62: 248,
+                63: 252,
+                64: 256,
+                65: 260,
+                66: 264,
+                67: 268,
+                68: 272,
+                69: 276,
+                70: 280,
+                71: 284,
+                72: 288,
+                73: 292,
+                74: 296,
+                75: 300,
+                76: 304,
+                77: 308,
+                78: 312,
+                79: 316,
+                80: 320,
+                81: 324,
+                82: 328,
+                83: 332,
+                84: 336,
+                85: 340,
+                86: 344,
+                87: 348,
+                88: 352,
+                89: 356,
+            }
+            double3 xformOp:translate = (0, 0, 0)
+            uniform token[] xformOpOrder = ["xformOp:translate", "xformOp:rotateY"]
+
+            over "cube_1" (
+                prepend references = @./cube_base_with_purple_linked.usd@
+            )
+            {   
+                double3 xformOp:translate = (0, 0, 0)
+                uniform token[] xformOpOrder = ["xformOp:translate"]
+            }
+        }
+    }
+}
+
diff --git a/explorations/Sketching2023/materials.usd b/explorations/Sketching2023/materials.usd
new file mode 100644
index 0000000..b00e00e
--- /dev/null
+++ b/explorations/Sketching2023/materials.usd
@@ -0,0 +1,21 @@
+#usda 1.0
+(
+    defaultPrim = "_materials"
+)
+
+def Scope "_materials"
+{
+    def Material "purple"
+    {
+        token outputs:surface.connect = </_materials/purple/previewShader.outputs:surface>
+
+        def Shader "previewShader"
+        {
+            uniform token info:id = "UsdPreviewSurface"
+            color3f inputs:diffuseColor = (0.9000001, 0.4429553, 0.72986294)
+            float inputs:metallic = 0.1
+            float inputs:roughness = 0.9
+            token outputs:surface
+        }
+    }
+}
\ No newline at end of file