GltfViewer

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Assets/UniGLTF_Samples/GltfViewer/GltfViewer.asmdef

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Assets/UniGLTF_Samples/GltfViewer/GltfViewer.cs

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+using System;
+using UnityEngine;
+
+namespace UniGLTF.GltfViewer
+{
+    public class GltfViewer : MonoBehaviour
+    {
+        RuntimeGltfInstance _instance;
+
+        // Start is called before the first frame update
+        void Start()
+        {
+
+        }
+
+        // Update is called once per frame
+        void Update()
+        {
+
+        }
+
+        public void OnOpenClicked()
+        {
+            var path = OpenFileDialog.Show("open gltf", "glb", "gltf", "zip");
+            if (!path.Exists)
+            {
+                return;
+            }
+            Debug.Log($"open: {path}");
+
+            LoadPathAsync(path);
+        }
+
+        async void LoadPathAsync(VRMShaders.PathObject path)
+        {
+            if (_instance)
+            {
+                // clear prev
+                _instance.Dispose();
+                _instance = null;
+            }
+
+            var sw = System.Diagnostics.Stopwatch.StartNew();
+            try
+            {
+                _instance = await GltfUtility.LoadAsync(path.FullPath);
+                if (_instance == null)
+                {
+                    Debug.LogWarning("LoadAsync: null");
+                    return;
+                }
+                Debug.Log($"LoadAsync: {sw.Elapsed}");
+                _instance.ShowMeshes();
+            }
+            catch (Exception ex)
+            {
+                Debug.LogException(ex);
+            }
+        }
+    }
+}

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Assets/UniGLTF_Samples/GltfViewer/GltfViewer.unity

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Assets/UniGLTF_Samples/GltfViewer/GltfViewer.unity.meta

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Assets/UniGLTF_Samples/GltfViewer/OpenFileDialog.meta

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Assets/UniGLTF_Samples/GltfViewer/OpenFileDialog/FileDialogForWindows.cs

@@ -0,0 +1,116 @@
+#if UNITY_STANDALONE_WIN
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Runtime.InteropServices;
+
+
+namespace UniGLTF.GltfViewer
+{
+    public static class FileDialogForWindows
+    {
+#region GetOpenFileName
+        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
+        public class OpenFileName
+        {
+            public int structSize = 0;
+            public IntPtr dlgOwner = IntPtr.Zero;
+            public IntPtr instance = IntPtr.Zero;
+            public String filter = null;
+            public String customFilter = null;
+            public int maxCustFilter = 0;
+            public int filterIndex = 0;
+            public String file = null;
+            public int maxFile = 0;
+            public String fileTitle = null;
+            public int maxFileTitle = 0;
+            public String initialDir = null;
+            public String title = null;
+            public int flags = 0;
+            public short fileOffset = 0;
+            public short fileExtension = 0;
+            public String defExt = null;
+            public IntPtr custData = IntPtr.Zero;
+            public IntPtr hook = IntPtr.Zero;
+            public String templateName = null;
+            public IntPtr reservedPtr = IntPtr.Zero;
+            public int reservedInt = 0;
+            public int flagsEx = 0;
+        }
+
+        [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]
+        public static extern bool GetOpenFileName([In, Out] OpenFileName ofn);
+        /*
+        public static bool GetOpenFileName1([In, Out] OpenFileName ofn)
+        {
+            return GetOpenFileName(ofn);
+        }
+        */
+
+        [DllImport("Comdlg32.dll", SetLastError = true, CharSet = CharSet.Auto)]
+        private static extern bool GetSaveFileName([In, Out] OpenFileName ofn);
+
+        static string Filter(params string[] filters)
+        {
+            return string.Join("\0", filters) + "\0";
+        }
+        public static string FileDialog(string title, params string[] extensions)
+        {
+            OpenFileName ofn = new OpenFileName();
+            ofn.structSize = Marshal.SizeOf(ofn);
+
+            var filters = new List<string>();
+            filters.Add("All Files"); filters.Add("*.*");
+            foreach(var ext in extensions)
+            {
+                filters.Add(ext); filters.Add("*" + ext);
+            }
+            ofn.filter = Filter(filters.ToArray());
+            ofn.filterIndex = 2;
+            ofn.file = new string(new char[256]);
+            ofn.maxFile = ofn.file.Length;
+            ofn.fileTitle = new string(new char[64]);
+            ofn.maxFileTitle = ofn.fileTitle.Length;
+            ofn.initialDir = UnityEngine.Application.dataPath;
+            ofn.title = title;
+            //ofn.defExt = "PNG";
+            ofn.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000200 | 0x00000008;//OFN_EXPLORER|OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST| OFN_ALLOWMULTISELECT|OFN_NOCHANGEDIR
+            if (!GetOpenFileName(ofn))
+            {
+                return null;
+            }
+
+            return ofn.file;
+        }
+        public static string SaveDialog(string title, string path)
+        {
+            var extension = Path.GetExtension(path);
+            OpenFileName ofn = new OpenFileName();
+            ofn.structSize = Marshal.SizeOf(ofn);
+            ofn.filter = Filter("All Files", "*.*", extension, "*" + extension);
+            ofn.filterIndex = 2;
+            var chars = new char[256];
+            var it = Path.GetFileName(path).GetEnumerator();
+            for (int i = 0; i < chars.Length && it.MoveNext(); ++i)
+            {
+                chars[i] = it.Current;
+            }
+            ofn.file = new string(chars);
+            ofn.maxFile = ofn.file.Length;
+            ofn.fileTitle = new string(new char[64]);
+            ofn.maxFileTitle = ofn.fileTitle.Length;
+            ofn.initialDir = Path.GetDirectoryName(path);
+            ofn.title = title;
+            //ofn.defExt = "PNG";
+            ofn.flags = 0x00000002 | 0x00000004; // OFN_OVERWRITEPROMPT | OFN_HIDEREADONLY;
+            if (!GetSaveFileName(ofn))
+            {
+                return null;
+            }
+
+            return ofn.file;
+        }
+#endregion
+    }
+}
+#endif

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Assets/UniGLTF_Samples/GltfViewer/OpenFileDialog/OpenFileDialog.cs

@@ -0,0 +1,14 @@
+namespace UniGLTF.GltfViewer
+{
+    public static class OpenFileDialog
+    {
+        public static VRMShaders.PathObject Show(string title, params string[] extensions)
+        {
+#if UNITY_STANDALONE_WIN
+            return VRMShaders.PathObject.FromFullPath(FileDialogForWindows.FileDialog(title, extensions));
+#else
+            return default;
+#endif
+        }
+    }
+}

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Assets/UniGLTF_Samples/GltfViewer/TurnTableCamera.cs

@@ -0,0 +1,142 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+
+namespace UniGLTF.GltfViewer
+{
+    public class TurnTableCamera : MonoBehaviour
+    {
+        [Range(0.1f, 5.0f)]
+        public float RotateSpeed = 0.7f;
+
+        [Range(0.1f, 5.0f)]
+        public float GrabSpeed = 0.7f;
+
+        [Range(0.1f, 5.0f)]
+        public float DollySpeed = 1.0f;
+
+        struct PosRot
+        {
+            public Vector3 Position;
+            public Quaternion Rotation;
+        }
+
+        class TurnTable
+        {
+            public float Yaw;
+            public float Pitch;
+            public float ShiftX;
+            public float ShiftY;
+            public float Distance = 2.0f;
+
+            public void Rotate(float x, float y)
+            {
+                Yaw += x;
+                Pitch -= y;
+                Pitch = Mathf.Clamp(Pitch, -90, 90);
+            }
+
+            public void Grab(float x, float y)
+            {
+                ShiftX += x * Distance;
+                ShiftY += y * Distance;
+            }
+
+            public void Dolly(float delta)
+            {
+                if (delta > 0)
+                {
+                    Distance *= 0.9f;
+                }
+                else if (delta < 0)
+                {
+                    Distance *= 1.1f;
+                }
+            }
+
+            public PosRot Calc()
+            {
+                var r = Quaternion.Euler(Pitch, Yaw, 0);
+                return new PosRot
+                {
+                    Position = r * new Vector3(-ShiftX, -ShiftY, -Distance),
+                    Rotation = r,
+                };
+            }
+        }
+        private TurnTable _currentCamera = new TurnTable();
+
+        private List<Coroutine> _activeCoroutines = new List<Coroutine>();
+        private void OnEnable()
+        {
+            // left mouse drag
+            _activeCoroutines.Add(StartCoroutine(MouseDragOperationCoroutine(0, diff =>
+            {
+                _currentCamera.Rotate(diff.x * RotateSpeed, diff.y * RotateSpeed);
+            })));
+            // right mouse drag
+            _activeCoroutines.Add(StartCoroutine(MouseDragOperationCoroutine(1, diff =>
+            {
+                _currentCamera.Rotate(diff.x * RotateSpeed, diff.y * RotateSpeed);
+            })));
+            // middle mouse drag
+            _activeCoroutines.Add(StartCoroutine(MouseDragOperationCoroutine(2, diff =>
+            {
+                _currentCamera.Grab(
+                    diff.x * GrabSpeed / Screen.height,
+                    diff.y * GrabSpeed / Screen.height
+                    );
+            })));
+            // mouse wheel
+            _activeCoroutines.Add(StartCoroutine(MouseScrollOperationCoroutine(diff =>
+            {
+                _currentCamera.Dolly(diff.y * DollySpeed);
+            })));
+        }
+        private void OnDisable()
+        {
+            foreach (var coroutine in _activeCoroutines)
+            {
+                StopCoroutine(coroutine);
+            }
+            _activeCoroutines.Clear();
+        }
+        private void Update()
+        {
+            var posRot = _currentCamera.Calc();
+
+            transform.localRotation = posRot.Rotation;
+            transform.localPosition = posRot.Position;
+        }
+        private IEnumerator MouseDragOperationCoroutine(int buttonIndex, Action<Vector2> dragOperation)
+        {
+            while (true)
+            {
+                while (!Input.GetMouseButtonDown(buttonIndex))
+                {
+                    yield return null;
+                }
+                var prevPos = Input.mousePosition;
+                while (Input.GetMouseButton(buttonIndex))
+                {
+                    var currPos = Input.mousePosition;
+                    var diff = currPos - prevPos;
+                    dragOperation(diff);
+
+                    prevPos = currPos;
+                    yield return null;
+                }
+            }
+        }
+        private IEnumerator MouseScrollOperationCoroutine(Action<Vector2> scrollOperation)
+        {
+            while (true)
+            {
+                scrollOperation(Input.mouseScrollDelta);
+                yield return null;
+            }
+        }
+    }
+}

Assets/UniGLTF_Samples/GltfViewer/TurnTableCamera.cs.meta

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