visualization/wpf/selectionhandling/App.xaml.cs

Refer to Selection Handling Example.

SelectionHandlingApplication.cs

// ****************************************************************************
// $Id$
//
// Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
// Copyright (C) 2014-2023, CADEX. All rights reserved.
//
// This file is part of the CAD Exchanger software.
//
// You may use this file under the terms of the BSD license as follows:
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// ****************************************************************************
 
 
using baseviewer;
using cadex;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
 
namespace selectionhandling
{
    class ModelVisitor : ModelData_Model.CombinedElementVisitor
    {
        public ModelVisitor(ModelPrs_SceneNode theRoot,
                             ModelPrs_SceneNodeFactory theFactory,
                             ref Dictionary<ModelPrs_SceneNode, ModelData_SceneGraphElement> theUserData)
        {
            myFactory = theFactory;
            myUserData = theUserData;
            myNodes.Push(theRoot);
        }
 
        public override void VisitLeave(ModelData_SceneGraphElement theSGE)
        {
            myNodes.Pop();
        }
 
        public override bool VisitEnter(ModelData_SceneGraphElement theSGE)
        {
            var anSGENode = myFactory.CreateNode(theSGE);
 
            myNodes.Peek().AddChildNode(anSGENode);
            myNodes.Push(anSGENode);
 
            return true;
        }
 
        public override void Apply(ModelData_Part thePart)
        {
            var aPartNode = myFactory.CreateNode(thePart);
            myUserData[aPartNode] = thePart;
            myNodes.Peek().AddChildNode(aPartNode);
 
            var aRep = thePart.BRepRepresentation();
            var aRepNode = myFactory.CreateNode(aRep);
            aPartNode.AddChildNode (aRepNode);
        }
 
        private Stack<ModelPrs_SceneNode> myNodes = new Stack<ModelPrs_SceneNode>();
        private ModelPrs_SceneNodeFactory myFactory = new ModelPrs_SceneNodeFactory();
        private readonly Dictionary<ModelPrs_SceneNode, ModelData_SceneGraphElement> myUserData;
    };
 
 
    public class SelectionVisitor : ModelPrs_SelectionVisitor
    {
        public SelectionVisitor(Dictionary<ModelPrs_SceneNode, ModelData_SceneGraphElement> theUserData)
        {
            myUserData   = theUserData;
        }
 
        public override void Visit(ModelPrs_SceneNode theNode)
        {
            var anSGE = myUserData[theNode.Parent()];
            if (anSGE != null)
            {
                System.Console.WriteLine("Part: " + anSGE.Name());
            }
        }
 
        public override void Visit(ModelPrs_SceneNode theNode, ModelData_ShapeList theShapes)
        {
            var anSGE = myUserData[theNode.Parent()];
            if (anSGE != null)
            {
                System.Console.WriteLine(theShapes.Size() + " subshapes of part: " + anSGE.Name());
            }
        }
 
        private readonly Dictionary<ModelPrs_SceneNode, ModelData_SceneGraphElement> myUserData;
    };
 
 
    public class SelectionChangesObserver : ModelPrs_SelectionChangesObserver
    {
        public SelectionChangesObserver(Dictionary<ModelPrs_SceneNode, ModelData_SceneGraphElement> theUserData)
        {
            myUserData = theUserData;
        }
 
        public override void SelectionChangedByScene(ModelPrs_Selection theCurrent,
                                                     ModelPrs_Selection theSelected,
                                                     ModelPrs_Selection theDeselected)
        {
            System.Console.WriteLine("====================");
 
            if (theSelected != null)
            {
                System.Console.WriteLine("Next items have been selected:");
                SelectionVisitor aVisitor1 = new SelectionVisitor(myUserData);
                theSelected.Accept(aVisitor1);
            }
 
            if (theDeselected != null)
            {
                System.Console.WriteLine("Next items have been deselected:");
                SelectionVisitor aVisitor2 = new SelectionVisitor(myUserData);
                theDeselected.Accept(aVisitor2);
            }
        }
 
        public override void SelectionChangedByManager(ModelPrs_Selection theCurrent,
                                                       ModelPrs_Selection theSelected,
                                                       ModelPrs_Selection theDeselected)
        {}
 
        readonly Dictionary<ModelPrs_SceneNode, ModelData_SceneGraphElement> myUserData;
    }
 
    public class Base_PublicObjectComparer<T> : IEqualityComparer<T> where T : Base_PublicObject
    {
        public bool Equals(T x, T y)
        {
            return x.IsEqual(y);
        }
 
        public int GetHashCode(T obj)
        {
            var aHash = new Base_PublicObjectHash();
            return (int)aHash.Apply(obj);
        }
    }
 
    public class SelectionHandlingApplication : baseviewer.BaseViewerApplication
    {
        public SelectionHandlingApplication(BaseViewer theViewer) : base(theViewer)
        {
            AddSelectionModeMenu();
            SetSelectionModeMenuItemChechecked("None", true);
            AddSelectionFilterMenu();
            SetSelectionFilterMenuItemChechecked("None", true);
 
            mySelectionObserver = new SelectionChangesObserver (myUserData);
            myScene.SelectionManager().Register (mySelectionObserver);
 
            myViewer.Viewport.HighlightEnabled = true;
        }
 
        void AddSelectionModeMenu()
        {
            MenuItem aSelectionModesMenu = new MenuItem();
            aSelectionModesMenu.Header = "Selection mode";
 
            MenuItem aNoneSMItem = new MenuItem();
            aNoneSMItem.Header = "None";
            aNoneSMItem.IsCheckable = true;
            aNoneSMItem.Click += onSelectionModeChanged;
 
            MenuItem aNodeSMItem = new MenuItem();
            aNodeSMItem.Header = "Node";
            aNodeSMItem.IsCheckable = true;
            aNodeSMItem.Click += onSelectionModeChanged;
 
            MenuItem aFaceSMItem = new MenuItem();
            aFaceSMItem.Header = "Face";
            aFaceSMItem.IsCheckable = true;
            aFaceSMItem.Click += onSelectionModeChanged;
 
            MenuItem aEdgeSMItem = new MenuItem();
            aEdgeSMItem.Header = "Edge";
            aEdgeSMItem.IsCheckable = true;
            aEdgeSMItem.Click += onSelectionModeChanged;
 
            aSelectionModesMenu.Items.Add(aNoneSMItem);
            aSelectionModesMenu.Items.Add(aNodeSMItem);
            aSelectionModesMenu.Items.Add(aFaceSMItem);
            aSelectionModesMenu.Items.Add(aEdgeSMItem);
 
            myViewer.myMenu.Items.Add(aSelectionModesMenu);
        }
 
        void AddSelectionFilterMenu()
        {
            MenuItem aSelectionFiltersMenu = new MenuItem();
            aSelectionFiltersMenu.Header = "Selection filters";
 
            MenuItem aNoneSFItem = new MenuItem();
            aNoneSFItem.Header = "None";
            aNoneSFItem.IsCheckable = true;
            aNoneSFItem.Click += onSelectionFilterTypeChanged;
 
            MenuItem aCircleEdgesSFItem = new MenuItem();
            aCircleEdgesSFItem.Header = "Circle edges only";
            aCircleEdgesSFItem.IsCheckable = true;
            aCircleEdgesSFItem.Click += onSelectionFilterTypeChanged;
 
            MenuItem aPlanarFacesSFItem = new MenuItem();
            aPlanarFacesSFItem.Header = "Planar faces only";
            aPlanarFacesSFItem.IsCheckable = true;
            aPlanarFacesSFItem.Click += onSelectionFilterTypeChanged;
 
            MenuItem aRevolFacesSFItem = new MenuItem();
            aRevolFacesSFItem.Header = "Revolution faces only";
            aRevolFacesSFItem.IsCheckable = true;
            aRevolFacesSFItem.Click += onSelectionFilterTypeChanged;
 
            aSelectionFiltersMenu.Items.Add(aNoneSFItem);
            aSelectionFiltersMenu.Items.Add(aCircleEdgesSFItem);
            aSelectionFiltersMenu.Items.Add(aPlanarFacesSFItem);
            aSelectionFiltersMenu.Items.Add(aRevolFacesSFItem);
 
            myViewer.myMenu.Items.Add(aSelectionFiltersMenu);
        }
 
        static MenuItem GetMenuItem(MenuItem theParent, string theMenuItemName)
        {
            foreach (var anItem in theParent.Items)
            {
                var aMenuItem = (MenuItem)anItem;
                var anItemName = (string)aMenuItem.Header;
                if (anItemName == theMenuItemName)
                {
                    return aMenuItem;
                }
            }
            return null;
        }
 
        static ModelPrs_SelectionMode ConvertToSelectionMode(string theMenuItemName)
        {
            if (theMenuItemName == "Node")
            {
                return ModelPrs_SelectionMode.ModelPrs_SM_Node;
            }
            if (theMenuItemName == "Face")
            {
                return ModelPrs_SelectionMode.ModelPrs_SM_Face;
            }
            if (theMenuItemName == "Edge")
            {
                return ModelPrs_SelectionMode.ModelPrs_SM_Edge;
            }
            return ModelPrs_SelectionMode.ModelPrs_SM_None;
        }
 
        void SetSelectionModeMenuItemChechecked(string theMenuItemName, bool theChecked)
        {
            var aSelectionModeMenu = (MenuItem)myViewer.myMenu.Items[1];
            foreach (var anItem in aSelectionModeMenu.Items)
            {
                var aMenuItem = (MenuItem)anItem;
                var anItemName = (string)aMenuItem.Header;
                if (anItemName == theMenuItemName)
                {
                    aMenuItem.IsChecked = theChecked;
                }
            }
            updateteMask(ref mySelectionModeMask, (int)ConvertToSelectionMode(theMenuItemName), theChecked);
        }
 
        void onSelectionModeChanged(object sender, RoutedEventArgs e)
        {
            var aMenuItem = (MenuItem)sender;
            var anItemName = (string)aMenuItem.Header;
 
            SetSelectionModeMenuItemChechecked(anItemName, aMenuItem.IsChecked);
 
            if (anItemName == "Node")
            {
                SetSelectionModeMenuItemChechecked("Face", false);
                SetSelectionModeMenuItemChechecked("Edge", false);
            }
            if (anItemName == "Face")
            {
                SetSelectionModeMenuItemChechecked("Node", false);
            }
            if (anItemName == "Edge")
            {
                SetSelectionModeMenuItemChechecked("Node", false);
            }
 
            bool aNoneSM = mySelectionModeMask == (int)ModelPrs_SelectionMode.ModelPrs_SM_None;
 
            if (aNoneSM)
            {
                SetSelectionModeMenuItemChechecked("Node", false);
                SetSelectionModeMenuItemChechecked("Face", false);
                SetSelectionModeMenuItemChechecked("Edge", false);
            }
 
            SetSelectionModeMenuItemChechecked("None", aNoneSM);
 
            myRoot.SetSelectionMode((ModelPrs_SelectionMode)mySelectionModeMask);
            myScene.Update();
        }
 
        static ModelPrs_SelectionFilterType ConvertToSelectionFilterType(string theMenuItemName)
        {
            if (theMenuItemName == "Circle edges only")
            {
                return ModelPrs_SelectionFilterType.ModelPrs_SFT_CircleEdgeFilter;
            }
            if (theMenuItemName == "Planar faces only")
            {
                return ModelPrs_SelectionFilterType.ModelPrs_SFT_PlanarFaceFilter;
            }
            if (theMenuItemName == "Revolution faces only")
            {
                return ModelPrs_SelectionFilterType.ModelPrs_SFT_RevolFaceFilter;
            }
            return ModelPrs_SelectionFilterType.ModelPrs_SFT_None;
        }
 
        void SetSelectionFilterMenuItemChechecked(string theMenuItemName, bool theChecked)
        {
            var aSelectionFilterMenu = (MenuItem)myViewer.myMenu.Items[2];
            foreach (var anItem in aSelectionFilterMenu.Items)
            {
                var aMenuItem = (MenuItem)anItem;
                var anItemName = (string)aMenuItem.Header;
                if (anItemName == theMenuItemName)
                {
                    aMenuItem.IsChecked = theChecked;
                }
            }
            updateteMask(ref mySelectionFilterMask, (int)ConvertToSelectionFilterType(theMenuItemName), theChecked);
        }
 
        void onSelectionFilterTypeChanged(object sender, RoutedEventArgs e)
        {
            var aMenuItem = (MenuItem)sender;
            var anItemName = (string)aMenuItem.Header;
 
            SetSelectionFilterMenuItemChechecked(anItemName, aMenuItem.IsChecked);
 
            bool aNoneSF = mySelectionFilterMask == (int)ModelPrs_SelectionFilterType.ModelPrs_SFT_None;
 
            if (aNoneSF)
            {
                SetSelectionFilterMenuItemChechecked("Circle edges only", false);
                SetSelectionFilterMenuItemChechecked("Planar faces only", false);
                SetSelectionFilterMenuItemChechecked("Revolution faces only", false);
            }
 
            SetSelectionFilterMenuItemChechecked("None", aNoneSF);
 
            myScene.SelectionManager().SetFilter((ModelPrs_SelectionFilterType)mySelectionFilterMask);
            myScene.Update();
        }
 
        protected override void CreateSceneNodes()
        {
            var aFactory = new ModelPrs_SceneNodeFactory();
            var aVisitor = new ModelVisitor(myRoot, aFactory, ref myUserData);
            myModel.Accept(aVisitor);
        }
 
        void updateteMask(ref int theMask, int theValue, bool theChecked)
        {
            if (theChecked && theValue == 0)
            {
                theMask = theValue;
            }
            else
            {
                theMask = theChecked ? theMask | theValue : theMask & ~theValue;
            }
        }
 
        int mySelectionModeMask = 0;
        int mySelectionFilterMask = 0;
        Dictionary<ModelPrs_SceneNode, ModelData_SceneGraphElement> myUserData = new Dictionary<ModelPrs_SceneNode, ModelData_SceneGraphElement>(new Base_PublicObjectComparer<ModelPrs_SceneNode>());
        readonly SelectionChangesObserver mySelectionObserver;
    }
}

SelectionHandlingWindow.xaml

<Window x:Class="selectionhandling.SelectionHandlingWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:baseviewer="clr-namespace:baseviewer"
        mc:Ignorable="d"
        Title="CAD Exchanger" Height="600" Width="1000">
    <baseviewer:BaseViewer x:Name="myViewer"></baseviewer:BaseViewer>
</Window>

SelectionHandlingWindow.xaml.cs

// ****************************************************************************
// $Id$
//
// Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
// Copyright (C) 2014-2023, CADEX. All rights reserved.
//
// This file is part of the CAD Exchanger software.
//
// You may use this file under the terms of the BSD license as follows:
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// ****************************************************************************
 
 
using System.Windows;
 
namespace selectionhandling
{
    public partial class SelectionHandlingWindow : Window
    {
        public SelectionHandlingWindow()
        {
            InitializeComponent();
 
            myViewer.ViewerApplication = new SelectionHandlingApplication(myViewer);
        }
    }
}

App.xaml

<Application x:Class="selectionhandling.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             StartupUri="SelectionHandlingWindow.xaml">
</Application>

App.xaml.cs

// ****************************************************************************
// $Id$
//
// Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
// Copyright (C) 2014-2023, CADEX. All rights reserved.
//
// This file is part of the CAD Exchanger software.
//
// You may use this file under the terms of the BSD license as follows:
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// ****************************************************************************
 
 
using cadex;
using System.Runtime.InteropServices;
using System.Windows;
 
namespace selectionhandling
{
    public partial class App : Application
    {
        // For more information see https://stackoverflow.com/questions/8836093/how-can-i-specify-a-dllimport-path-at-runtime
        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        static extern bool SetDllDirectory(string lpPathName);
 
        public App()
        {
            // Add runtime path to CAD Exchanger libraries (e.g. use libraries compiled with Visual Studio 2015)
            SetDllDirectory("../../../../../../../win64/vc14.1/bin");
 
            string aKey = LicenseKey.Value();
 
            // Activate the license(aKey must be defined in cadex_license.cs)
            if (!LicenseManager.Activate(aKey))
            {
                MessageBox.Show("Failed to activate CAD Exchanger license.");
                Shutdown();
            }
        }
    }
}