Update HelloUSD and Separated out + updated ExportMeshWithAnimation sample project

Author: lee-aandrew

package/com.unity.formats.usd/Editor/Utils/SampleUtils.cs

@@ -0,0 +1,35 @@
+using System;
+using System.IO;
+using System.Runtime.CompilerServices;
+using UnityEditor;
+using UnityEngine;
+
+namespace Unity.Formats.USD
+{
+    public static class SampleUtils
+    {
+        /// <summary>
+        /// Utils functions for the package Samples
+        /// </summary>
+
+        private static EditorWindow GetConsoleWindow()
+        {
+            var editorWindowTypes = TypeCache.GetTypesDerivedFrom<EditorWindow>();
+            foreach (var type in editorWindowTypes)
+            {
+                if (type.Name == "ConsoleWindow")
+                {
+                    return EditorWindow.GetWindow(type);
+                }
+            }
+
+            throw new System.Exception("Error could not find ConsoleWindow type");
+        }
+
+        public static void FocusConsoleWindow()
+        {
+            var consoleWindow = GetConsoleWindow();
+            consoleWindow.Focus();
+        }
+    }
+}

package/com.unity.formats.usd/Editor/Utils/SampleUtils.cs.meta

@@ -0,0 +1,72 @@
+// Copyright 2017 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using UnityEngine;
+using UnityEditor;
+using System.IO;
+
+namespace Unity.Formats.USD.Examples
+{
+    [CustomEditor(typeof(ExportMeshWithAnimationExample))]
+    public class ExportMeshExampleEditor : Editor
+    {
+        public override void OnInspectorGUI()
+        {
+            DrawDefaultInspector();
+
+            ExportMeshWithAnimationExample script = (ExportMeshWithAnimationExample)target;
+
+            if (!EditorApplication.isPlaying)
+            {
+                if (GUILayout.Button("Play Scene to Start Animation"))
+                {
+                    EditorApplication.isPlaying = true;
+                }
+            }
+            else
+            {
+                if (script.IsFinishedRecording)
+                {
+                    if (GUILayout.Button("Recording Complete - Stop Scene"))
+                    {
+                        EditorApplication.isPlaying = false;
+                        Debug.Log($"<color=#00FF00>Open the <b>'Assets' Folder</b> in your Unity 'Project' Window to see your newly exported USD file <{script.m_newUsdFileName}></color>");
+                        SampleUtils.FocusConsoleWindow();
+                    }
+                }
+
+                else
+                {
+                    if (script.IsRecording)
+                    {
+                        GUI.backgroundColor = Color.white;
+                        var labelStyle = new GUIStyle() { fontStyle = FontStyle.Bold, alignment = TextAnchor.MiddleCenter };
+                        labelStyle.normal.textColor = Color.white;
+                        GUILayout.Label("Recording...", labelStyle);
+                    }
+                    else
+                    {
+                        GUI.backgroundColor = Color.red;
+                        if (GUILayout.Button("Record Animation"))
+                        {
+                            EditorApplication.isPaused = false;
+                            script.StartRecording();
+                        }
+                    }
+                }
+            }
+
+        }
+    }
+}

package/com.unity.formats.usd/Samples/ExportMesh/Editor/ExportMeshExampleEditor.cs

@@ -18,33 +18,25 @@ namespace USD.NET.Examples
 {
     public class Explode : MonoBehaviour
     {
-        public int m_explodeTime = 10;
+        public float m_explodeTime = 10;
         public Transform m_effectRoot;
         public float m_force = 1;
         public float m_radius = 1;
 
-        private bool m_active = true;
-
-        void Start()
-        {
-        }
+        private float currTime;
 
         void Update()
         {
-            if (!m_active)
-            {
-                return;
-            }
+            currTime += Time.deltaTime;
 
-            if (Time.time < m_explodeTime)
+            if (currTime > m_explodeTime)
             {
-                return;
-            }
+                currTime = 0;
 
-            m_active = false;
-            foreach (Rigidbody rb in m_effectRoot.GetComponentsInChildren<Rigidbody>())
-            {
-                rb.AddExplosionForce(m_force, transform.position, m_radius);
+                foreach (Rigidbody rb in m_effectRoot.GetComponentsInChildren<Rigidbody>())
+                {
+                    rb.AddExplosionForce(m_force, transform.position, m_radius);
+                }
             }
         }
     }