init

Disp/RenderingCanvas.cs

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+using Hi.Disp;
+using Hi.Native;
+using Hi.PanelModels;
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Collections.Generic;
+using Hi.Geom;
+
+namespace Hi.Wpf.Disp
+{
+    #region WPF Rendering Canvas
+    public class RenderingCanvas : UserControl, IDisposable
+    {
+        #region Core_Properties
+        /// <summary>
+        /// The DispEngine instance that handles rendering and user interactions
+        /// </summary>
+        public DispEngine DispEngine { get; } = new DispEngine();
+        
+        /// <summary>
+        /// Internal container for rendering content
+        /// </summary>
+        private UserControl DisplayerPane { get; }
+        
+        /// <summary>
+        /// Dictionary to store touch point information
+        /// </summary>
+        private Dictionary<int, Point> TouchingPointsMap { get; } = new Dictionary<int, Point>();
+        
+        /// <summary>
+        /// Dictionary to store previous positions of touch points
+        /// </summary>
+        private Dictionary<int, Point> PreviousTouchingPointsMap { get; } = new Dictionary<int, Point>();
+        #endregion
+        
+        #region Initialization
+        /// <summary>
+        /// Initializes a new instance of the RenderingCanvas
+        /// </summary>
+        public RenderingCanvas()
+        {
+            DispEngine.BackgroundColor = new Vec3d(0.1, 0.1, 0.5);
+            DispEngine.BackgroundOpacity = 0.1;
+
+            // Configure the main control properties
+            HorizontalAlignment = HorizontalAlignment.Stretch;
+            VerticalAlignment = VerticalAlignment.Stretch;
+            Focusable = true;
+            KeyboardNavigation.SetDirectionalNavigation(this, KeyboardNavigationMode.Cycle);
+            DataContextChanged += CanvasDataContextChanged;
+
+            // Create and configure the display pane
+            DisplayerPane = new UserControl();
+            DisplayerPane.HorizontalAlignment = HorizontalAlignment.Stretch;
+            DisplayerPane.VerticalAlignment = VerticalAlignment.Stretch;
+            DisplayerPane.Focusable = true;
+            DisplayerPane.IsTabStop = true;
+
+            // Connect event handlers for user input and window events
+            DisplayerPane.SizeChanged += RenderingCanvas_SizeChanged;
+            DisplayerPane.MouseMove += RenderingCanvas_MouseMove;
+            DisplayerPane.MouseDown += RenderingCanvas_MouseDown;
+            DisplayerPane.MouseUp += RenderingCanvas_MouseUp;
+            DisplayerPane.MouseWheel += RenderingCanvas_MouseWheel;
+            DisplayerPane.KeyDown += RenderingCanvas_KeyDown;
+            DisplayerPane.KeyUp += RenderingCanvas_KeyUp;
+            DisplayerPane.Loaded += RenderingCanvas_Loaded;
+            DisplayerPane.Unloaded += RenderingCanvas_Unloaded;
+            DisplayerPane.IsVisibleChanged += DisplayerPane_IsVisibleChanged;
+
+            // Add touch event handlers
+            DisplayerPane.TouchDown += RenderingCanvas_TouchDown;
+            DisplayerPane.TouchMove += RenderingCanvas_TouchMove;
+            DisplayerPane.TouchUp += RenderingCanvas_TouchUp;
+            
+            // Enable touch support
+            this.IsManipulationEnabled = true;
+
+            // Add the display pane to this control's content
+            Content = DisplayerPane;
+        }
+        #endregion
+        
+        #region Touch_Events
+        /// <summary>
+        /// Handles the touch down event
+        /// </summary>
+        private void RenderingCanvas_TouchDown(object sender, TouchEventArgs e)
+        {
+            // Add touch point to dictionary
+            Point touchPoint = e.GetTouchPoint(DisplayerPane).Position;
+            DispEngine.TouchDown(e.TouchDevice.Id,
+                (int)touchPoint.X, (int)touchPoint.Y);
+
+            // Ensure control gets focus
+            DisplayerPane.Focus();
+            e.TouchDevice.Capture(DisplayerPane);
+            
+            e.Handled = true;
+        }
+        
+        /// <summary>
+        /// Handles the touch move event
+        /// </summary>
+        private void RenderingCanvas_TouchMove(object sender, TouchEventArgs e)
+        {
+            Point touchPoint = e.GetTouchPoint(DisplayerPane).Position;
+            DispEngine.TouchMove(e.TouchDevice.Id,
+                (int)touchPoint.X, (int)touchPoint.Y);
+            e.Handled = true;
+        }
+        
+        /// <summary>
+        /// Handles the touch up event
+        /// </summary>
+        private void RenderingCanvas_TouchUp(object sender, TouchEventArgs e)
+        {
+            DispEngine.TouchUp(e.TouchDevice.Id);
+            e.Handled = true;
+        }
+        #endregion
+        
+        #region Window_Events
+        /// <summary>
+        /// Handles window state changes (maximize, minimize, etc.)
+        /// </summary>
+        private unsafe void RenderingCanvas_StateChanged(object sender, EventArgs e)
+        {
+            switch ((sender as Window).WindowState)
+            {
+                case WindowState.Maximized:
+                    DispEngine.IsVisible = true;
+                    break;
+                case WindowState.Minimized:
+                    DispEngine.IsVisible = false;
+                    break;
+                case WindowState.Normal:
+                    DispEngine.IsVisible = true;
+                    break;
+            }
+        }
+
+        /// <summary>
+        /// Handles data context changes
+        /// </summary>
+        private unsafe void CanvasDataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
+        {
+            DispEngine pre = e.OldValue as DispEngine;
+            DispEngine cur = e.NewValue as DispEngine;
+
+            //child's binding event is triggered after IsVisible event and Load event.
+            if (pre != null)    //this section will never occur if the datacontext not set twice.
+            {
+                pre.Terminate();
+                pre.ImageRequestAfterBufferSwapped -= RenderingCanvas_BufferSwapped;
+            }
+            if (cur != null)
+            {
+                cur.ImageRequestAfterBufferSwapped += RenderingCanvas_BufferSwapped;
+                cur.Start((int)DisplayerPane.RenderSize.Width, (int)DisplayerPane.RenderSize.Height);
+
+                cur.IsVisible = IsVisible;
+            }
+        }
+        
+        /// <summary>
+        /// Reference to the current window containing this control
+        /// </summary>
+        private Window currentWindow;
+        
+        /// <summary>
+        /// Gets or sets the current window, connecting or disconnecting state change events
+        /// </summary>
+        Window CurrentWindow
+        {
+            get => currentWindow; set
+            {
+                if (currentWindow != null)
+                    currentWindow.StateChanged -= RenderingCanvas_StateChanged;
+                currentWindow = value;
+                if (currentWindow != null)
+                    currentWindow.StateChanged += RenderingCanvas_StateChanged;
+            }
+        }
+        
+        /// <summary>
+        /// Handles the loaded event
+        /// </summary>
+        private unsafe void RenderingCanvas_Loaded(object sender, RoutedEventArgs e)
+        {
+            // Get the window containing this control
+            CurrentWindow = Window.GetWindow(this);
+            
+            // Set up DispEngine rendering
+            DispEngine.ImageRequestAfterBufferSwapped -= RenderingCanvas_BufferSwapped;
+            DispEngine.ImageRequestAfterBufferSwapped += RenderingCanvas_BufferSwapped;
+            DispEngine.Start((int)DisplayerPane.RenderSize.Width, (int)DisplayerPane.RenderSize.Height);
+            DispEngine.IsVisible = IsVisible;
+        }
+        
+        /// <summary>
+        /// Handles the unloaded event
+        /// </summary>
+        private unsafe void RenderingCanvas_Unloaded(object sender, RoutedEventArgs e)
+        {
+            DispEngine.IsVisible = IsVisible;
+            DispEngine.ImageRequestAfterBufferSwapped -= RenderingCanvas_BufferSwapped;
+            CurrentWindow = null;
+        }
+        #endregion
+        
+        #region DispEngine_Rendering
+        /// <summary>
+        /// Handles the buffer swapped event from DispEngine
+        /// </summary>
+        private unsafe void RenderingCanvas_BufferSwapped(byte* data, int w, int h)
+        {
+            if (data == null)
+                return;
+                
+            // Copy pixel data from DispEngine
+            int n = w * h * 4;
+            byte[] arr = new byte[n];
+            for (int i = 0; i < n; i++)
+                arr[i] = data[i];
+                
+            // Update UI on the UI thread
+            DisplayerPane.Dispatcher.InvokeAsync(() =>
+            {
+                BitmapSource bitmap = BitmapSource.Create(w, h, 1, 1, PixelFormats.Bgra32, null, arr, w * 4);
+                DisplayerPane.Background = new ImageBrush(bitmap);
+            });
+        }
+        
+        /// <summary>
+        /// Handles the size changed event
+        /// </summary>
+        private void RenderingCanvas_SizeChanged(object sender, SizeChangedEventArgs e)
+        {
+            // Notify DispEngine of size changes
+            DispEngine.Resize((int)DisplayerPane.RenderSize.Width, (int)DisplayerPane.RenderSize.Height);
+        }
+        
+        /// <summary>
+        /// Handles visibility changes
+        /// </summary>
+        private unsafe void DisplayerPane_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
+        {
+            // Update visibility state in DispEngine
+            DispEngine.IsVisible = IsVisible;
+        }
+        #endregion
+        
+        #region Keyboard_Events
+        /// <summary>
+        /// Handles the key up event
+        /// </summary>
+        private void RenderingCanvas_KeyUp(object sender, KeyEventArgs e)
+        {
+            DispEngine.KeyUp((long)e.Key);
+        }
+        
+        /// <summary>
+        /// Handles the key down event
+        /// </summary>
+        private void RenderingCanvas_KeyDown(object sender, KeyEventArgs e)
+        {
+            DispEngine.KeyDown((long)e.Key);
+
+            // Map specific keys for view transformation
+            long key = (long)e.Key;
+            if (key == (long)Key.RightShift)
+                key = (long)Key.LeftShift;
+                
+            DispEngine.KeyDownTransform(key, new key_table__transform_view_by_key_pressing_t()
+            {
+                HOME = (long)Key.Home,
+                PAGE_UP = (long)Key.PageUp,
+                PAGE_DOWN = (long)Key.PageDown,
+                F1 = (long)Key.F1,
+                F2 = (long)Key.F2,
+                F3 = (long)Key.F3,
+                F4 = (long)Key.F4,
+                SHIFT = (long)Key.LeftShift,
+                ARROW_LEFT = (long)Key.Left,
+                ARROW_RIGHT = (long)Key.Right,
+                ARROW_DOWN = (long)Key.Down,
+                ARROW_UP = (long)Key.Up
+            });
+        }
+        #endregion
+        
+        #region Mouse_Events
+        /// <summary>
+        /// Helper method to get mouse button mask
+        /// </summary>
+        internal static HiMouseButtonMask GetMouseButtonMask(MouseDevice device)
+        {
+            HiMouseButtonMask mouseButtonMask = 0;
+            mouseButtonMask.SetLeftPressed(device.LeftButton == MouseButtonState.Pressed);
+            mouseButtonMask.SetMiddlePressed(device.MiddleButton == MouseButtonState.Pressed);
+            mouseButtonMask.SetRightPressed(device.RightButton == MouseButtonState.Pressed);
+            mouseButtonMask.SetXButton1Pressed(device.XButton1 == MouseButtonState.Pressed);
+            mouseButtonMask.SetXButton2Pressed(device.XButton2 == MouseButtonState.Pressed);
+            return mouseButtonMask;
+        }
+
+        /// <summary>
+        /// Handles the mouse wheel event
+        /// </summary>
+        private void RenderingCanvas_MouseWheel(object sender, MouseWheelEventArgs e)
+        {
+            // Handle mouse wheel for zoom operations
+            DispEngine.MouseWheel(0, e.Delta / 120);
+            DispEngine.MouseWheelTransform(0, e.Delta / 120);
+        }
+        
+        /// <summary>
+        /// Handles the mouse up event
+        /// </summary>
+        private void RenderingCanvas_MouseUp(object sender, MouseButtonEventArgs e)
+        {
+            // Handle mouse button release
+            DispEngine.MouseButtonUp((long)e.ChangedButton);
+            (sender as UIElement)?.ReleaseMouseCapture();
+        }
+        
+        /// <summary>
+        /// Handles the mouse down event
+        /// </summary>
+        private void RenderingCanvas_MouseDown(object sender, MouseButtonEventArgs e)
+        {
+            // Handle mouse button press
+            DispEngine.MouseButtonDown((long)e.ChangedButton);
+            DisplayerPane.Focus();
+            (sender as UIElement)?.CaptureMouse();
+        }
+        
+        /// <summary>
+        /// Handles the mouse move event
+        /// </summary>
+        private void RenderingCanvas_MouseMove(object sender, MouseEventArgs e)
+        {
+            // Update mouse position and handle drag transforms
+            Point p = e.GetPosition(DisplayerPane);
+            DispEngine.MouseMove((int)p.X, (int)p.Y);
+            DispEngine.MouseDragTransform((int)p.X, (int)p.Y,
+                new mouse_button_table__transform_view_by_mouse_drag_t()
+                {
+                    LEFT_BUTTON = (long)MouseButton.Left,
+                    RIGHT_BUTTON = (long)MouseButton.Right
+                });
+        }
+        #endregion
+        
+        #region Cleanup
+        /// <summary>
+        /// Flag to track disposed state
+        /// </summary>
+        private bool disposedValue;
+        
+        /// <summary>
+        /// Disposes managed resources
+        /// </summary>
+        protected virtual void Dispose(bool disposing)
+        {
+            if (!disposedValue)
+            {
+                if (disposing)
+                {
+                    // Dispose the DispEngine to free resources
+                    DispEngine.Dispose();
+                }
+                disposedValue = true;
+            }
+        }
+        
+        /// <summary>
+        /// Public dispose method to free resources
+        /// </summary>
+        public void Dispose()
+        {
+            // Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
+            Dispose(disposing: true);
+            GC.SuppressFinalize(this);
+        }
+        #endregion
+    }
+    #endregion
+}

Disp/RenderingWindow.cs

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+using Hi.Disp;
+using Hi.Licenses;
+using System;
+using System.Windows;
+using System.Windows.Media;
+
+namespace Hi.Wpf.Disp
+{
+    /// <summary>
+    /// Window for 3D rendering.
+    /// </summary>
+    public class RenderingWindow : Window, IGetDispEngine
+    {
+        public RenderingCanvas RenderingCanvas => Content as RenderingCanvas;
+
+        /// <summary>
+        /// Ctor.
+        /// </summary>
+        public RenderingWindow()
+        {
+            Title = nameof(RenderingWindow);
+            Height = 450;
+            Width = 800;
+            StateChanged += RenderingWind_StateChanged;
+            Content = new RenderingCanvas()
+            {
+                BorderThickness = new Thickness(1),
+                BorderBrush = Brushes.Black
+            };
+        }
+        private void RenderingWind_StateChanged(object sender, EventArgs e)
+        {
+            RenderingCanvas.DispEngine.IsVisible = WindowState != WindowState.Minimized;
+        }
+        /// <inheritdoc/>
+        public DispEngine GetDispEngine() => RenderingCanvas.DispEngine;
+        /// <summary>
+        /// Run a simple <see cref="RenderingWindow"/> application with given <paramref name="displayees"/>.
+        /// </summary>
+        /// <param name="title">Title</param>
+        /// <param name="displayees">displayees</param>
+        /// <returns>return value of <see cref="Application"/>.<see cref="Application.Run(Window)"/></returns>
+        public static int RunApplication(string title, params IDisplayee[] displayees)
+        {
+            License.LogInAll();
+            DispEngine.Init();
+
+            Application app = new Application
+            {
+                ShutdownMode = ShutdownMode.OnMainWindowClose
+            };
+            app.Exit += (o, e) =>
+            {
+                DispEngine.FinishDisp();
+                License.LogOutAll();
+            };
+            RenderingWindow window = new RenderingWindow() { Title = title };
+            window.RenderingCanvas.DispEngine.Displayee = new DispList(displayees);
+            window.RenderingCanvas.DispEngine.SetViewToHomeView();
+            return app.Run(window);
+        }
+    }
+}