revit二次开发API示例 Selections

520 2024/11/24

应用程序：Selections

Revit 平台：全部

Revit 版本：2011.0

首次发布于：2011.0

编程语言：C＃

技能水平：初学者

类别：选择

类型：外部命令

主题：Selections

摘要：本示例将演示如何执行选择操作。

相关类：

Autodesk.Revit.UI.IExternalCommand

Autodesk.Revit.DB.Document

Autodesk.Revit.DB.Element

Autodesk.Revit.DB.Reference

Autodesk.Revit.UI.Selection.Selection

Autodesk.Revit.UI.Selection.ObjectType

Autodesk.Revit.UI.Selection.ISelectionFilter

Autodesk.Revit.UI.Selection.ObjectSnapTypes

Autodesk.Revit.Exceptions.OperationCanceledException

项目文件：

Command.cs

该文件包含四个类，它们实现了 IExternalCommand 接口。

PickforDeletion 命令允许选择一些元素，然后从文档中删除这些元素。

PlaceAtPointOnWallFace 命令允许在墙面上选择一个点，然后在该点上放置一个固定尺寸为 36" x 48" 的窗户。

PlaceAtPickedFaceWorkplane 命令允许选择一个面，并在其上设置工作平面，然后在工作平面上选择一个点作为圆的中心。

SelectionDialog 命令允许从对话框中选择一个元素和一个点。选择点后，该元素将移动到所选择的点上。

SelectionFilters.cs

该文件包含三个类，它们实现了 ISelectionFilter 接口。

DefaultElementsFilter 是允许选择所有对象的过滤器。

WallFaceFilter 是一个过滤器，允许仅选择墙面。

PlanarFaceFilter 是一个过滤器，允许仅选择平面面。

SelectionManager.cs

该文件包含两个类。

SelectionType 用于从对话框中选择特定的选择类型。

SelectionManager 执行对象选择和存储选项卡的工作。 

SelectionForm.cs

该文件包含一个 SelectionForm 类，该类提供了一个选择对象的对话框。

描述：

该示例利用 Selection 类的 PickObject 和 PickObjects 方法来选择一个和多个对象。它还利用 Selection 类的 PickPoint 方法来选择点。

实现接口 ISelectionFilter 对元素和对象引用进行过滤，并在选择时使用。

说明：

1.启动 Revit。

2.为了使用这些命令，用户应该打开目录中的“SelectionsSample.rvt”文件，或者手动创建一个已加载 36" x 48" 窗户类型的项目文档。如果已打开的文档不包含指定类型的窗户，则 PlaceAtPointOnWallFace 命令会失败。

3.从外部命令菜单启动“选择要删除的项”。选择要在文档中删除的一些元素，这些选定的元素将被删除。

4.从外部命令菜单启动“在墙面点放置”。在墙面上选择一个点，然后会在所选择的位置放置一个 36" x 48" 的窗户。

5.从外部命令菜单启动“在选择的面工作平面上放置”。选择一个柱子的面；在所选择的面上创建一个新的工作平面，然后在该平面上选择一个点，将创建一个以该点为中心的圆。

6.从外部命令菜单启动“选择对话框”。一个名为“选择”的对话框显示。点击“选择元素”按钮。选择文档中的一个元素。对话框再次显示。点击“移动到”按钮。选择文档中的一个点，先前选定的元素将移动到所选位置。

源代码：

完整的源代码请加入QQ群649037449，在群文件中下载RevitSDK.exe，解压后在文件夹中搜索本文中应用程序名称即可获得完整源码

SelectionFilters.cs

//
// (C) Copyright 2003-2019 by Autodesk, Inc.
//
// Permission to use, copy, modify, and distribute this software in
// object code form for any purpose and without fee is hereby granted,
// provided that the above copyright notice appears in all copies and
// that both that copyright notice and the limited warranty and
// restricted rights notice below appear in all supporting
// documentation.
//
// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
// UNINTERRUPTED OR ERROR FREE.
//
// Use, duplication, or disclosure by the U.S. Government is subject to
// restrictions set forth in FAR 52.227-19 (Commercial Computer
// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
// (Rights in Technical Data and Computer Software), as applicable.
//
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Autodesk.Revit;
using Autodesk.Revit.ApplicationServices;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI.Selection;
namespace Revit.SDK.Samples.Selections.CS
{
    /// <summary>
    /// A default filter.
    /// All objects are allowed to be picked.
    /// </summary>
    public class DefaultElementsFilter : ISelectionFilter
    {
        /// <summary>
        /// Allow all the element to be selected
        /// </summary>
        /// <param name="element">A candidate element in selection operation.</param>
        /// <returns>Return true to allow the user to select this candidate element.</returns>
        public bool AllowElement(Element element)
        {
            return true;
        }
        /// <summary>
        /// Allow all the reference to be selected
        /// </summary>
        /// <param name="refer">A candidate reference in selection operation.</param>
        /// <param name="point">The 3D position of the mouse on the candidate reference.</param>
        /// <returns>Return true to allow the user to select this candidate reference.</returns>
        public bool AllowReference(Reference refer, XYZ point)
        {
            return true;
        }
    }
    /// <summary>
    /// A Filter for Wall Face.
    /// Only wall faces are allowed to be picked.
    /// </summary>
    public class WallFaceFilter : ISelectionFilter
    {
        // Revit document.
        Document m_doc = null;
        /// <summary>
        /// Constructor the filter and initialize the document.
        /// </summary>
        /// <param name="doc">The document.</param>
        public WallFaceFilter(Document doc)
        {
            m_doc = doc;
        }
        /// <summary>
        /// Allow wall to be selected
        /// </summary>
        /// <param name="element">A candidate element in selection operation.</param>
        /// <returns>Return true for wall. Return false for non wall element.</returns>
        public bool AllowElement(Element element)
        {
            return element is Wall;
        }
        /// <summary>
        /// Allow face reference to be selected
        /// </summary>
        /// <param name="refer">A candidate reference in selection operation.</param>
        /// <param name="point">The 3D position of the mouse on the candidate reference.</param>
        /// <returns>Return true for face reference. Return false for non face reference.</returns>
        public bool AllowReference(Reference refer, XYZ point)
        {
            GeometryObject geoObject = m_doc.GetElement(refer).GetGeometryObjectFromReference(refer);
            return geoObject != null && geoObject is Face;
        }
    }
    /// <summary>
    /// A Filter for planar face.
    /// Only planar faces are allowed to be picked.
    /// </summary>
    public class PlanarFaceFilter : ISelectionFilter
    {
        // Revit document.
        Document m_doc = null;
        /// <summary>
        /// Constructor the filter and initialize the document.
        /// </summary>
        /// <param name="doc">The document.</param>
        public PlanarFaceFilter(Document doc)
        {
            m_doc = doc;
        }
        /// <summary>
        /// Allow all the element to be selected
        /// </summary>
        /// <param name="element">A candidate element in selection operation.</param>
        /// <returns>Return true to allow the user to select this candidate element.</returns>
        public bool AllowElement(Element element)
        {
            return true;
        }
        /// <summary>
        /// Allow planar face reference to be selected
        /// </summary>
        /// <param name="refer">A candidate reference in selection operation.</param>
        /// <param name="point">The 3D position of the mouse on the candidate reference.</param>
        /// <returns>Return true for planar face reference. Return false for non planar face reference.</returns>
        public bool AllowReference(Reference refer, XYZ point)
        {
            GeometryObject geoObject = m_doc.GetElement(refer).GetGeometryObjectFromReference(refer);
            return geoObject != null && geoObject is PlanarFace;
        }
    }
}

SelectionManager.cs

//
// (C) Copyright 2003-2019 by Autodesk, Inc.
//
// Permission to use, copy, modify, and distribute this software in
// object code form for any purpose and without fee is hereby granted,
// provided that the above copyright notice appears in all copies and
// that both that copyright notice and the limited warranty and
// restricted rights notice below appear in all supporting
// documentation.
//
// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
// UNINTERRUPTED OR ERROR FREE.
//
// Use, duplication, or disclosure by the U.S. Government is subject to
// restrictions set forth in FAR 52.227-19 (Commercial Computer
// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
// (Rights in Technical Data and Computer Software), as applicable.
//
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Autodesk.Revit;
using Autodesk.Revit.ApplicationServices;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit.UI.Selection;
using Reference = Autodesk.Revit.DB.Reference;
using Exceptions = Autodesk.Revit.Exceptions;
namespace Revit.SDK.Samples.Selections.CS
{
    /// <summary>
    /// A enum class for specific selection type.
    /// </summary>
    public enum SelectionType
    {
        /// <summary>
        /// type for select element.
        /// </summary>
        Element,
        /// <summary>
        /// type for select face.
        /// </summary>
        Face,
        /// <summary>
        /// type for select edge.
        /// </summary>
        Edge,
        /// <summary>
        /// type for select point.
        /// </summary>
        Point
    }
    /// <summary>
    /// A class for object selection and storage.
    /// </summary>
    public class SelectionManager
    {
        /// <summary>
        /// To store a reference to the commandData.
        /// </summary>
        ExternalCommandData m_commandData;
        /// <summary>
        /// store the application
        /// </summary>
        UIApplication m_application;
        /// <summary>
        /// store the document
        /// </summary>
        UIDocument m_document;
        /// <summary>
        /// For basic creation.
        /// </summary>
        Autodesk.Revit.Creation.ItemFactoryBase m_CreationBase;
        /// <summary>
        /// The picked point of element.
        /// </summary>
        XYZ m_elemPickedPoint;
                
        SelectionType m_selectionType = SelectionType.Element;
        /// <summary>
        /// For specific selection type.
        /// </summary>
        public SelectionType SelectionType
        {
            get 
            { 
                return m_selectionType; 
            }
            set 
            { 
                m_selectionType = value; 
            }
        }
        Element m_selectedElement;
        /// <summary>
        /// Store the selected element.
        /// </summary>
        public Element SelectedElement
        {
            get
            { 
                return m_selectedElement;
            }
            set 
            { 
                m_selectedElement = value; 
            }
        }
        XYZ m_selectedPoint;
        /// <summary>
        /// Store the selected point. 
        /// When the point is picked, move the element to the point.
        /// </summary>
        public XYZ SelectedPoint
        {
            get 
            { 
                return m_selectedPoint; 
            }
            set 
            { 
                m_selectedPoint = value; 
                if (m_selectedElement != null && m_selectedPoint != null)
                {
                    MoveElement(m_selectedElement, m_selectedPoint);
                }
            }
        }       
        /// <summary>
        /// constructor of SelectionManager
        /// </summary>
        /// <param name="commandData"></param>
        public SelectionManager(ExternalCommandData commandData)
        {
            m_commandData = commandData;
            m_application = m_commandData.Application;
            m_document = m_application.ActiveUIDocument;
            if (m_document.Document.IsFamilyDocument)
            {
                m_CreationBase = m_document.Document.FamilyCreate;
            }
            else
            {
                m_CreationBase = m_document.Document.Create;
            }
        }
        /// <summary>
        /// Select objects according to the selection type.
        /// </summary>
        public void SelectObjects()
        {
            switch (m_selectionType)
            {
                case SelectionType.Element:
                    PickElement(); // pick element
                    break;
                case SelectionType.Face:
                    break;
                case SelectionType.Edge:
                    break;
                case SelectionType.Point:
                    PickPoint(); // pick point
                    break;
            }
        }
        /// <summary>
        /// Pick the element from UI.
        /// </summary>
        internal void PickElement()
        {
            try
            {
                // Pick an element.
                Reference eRef = m_document.Selection.PickObject(Autodesk.Revit.UI.Selection.ObjectType.Element, "Please pick an element.");
                if (eRef != null && eRef.ElementId != ElementId.InvalidElementId)
                {
                    SelectedElement = m_document.Document.GetElement(eRef);
                    m_elemPickedPoint = eRef.GlobalPoint;
                }
            }
            catch (Exceptions.OperationCanceledException)
            {
                // Element selection cancelled.
                SelectedElement = null;
            }
        }
        /// <summary>
        /// Pick the point from UI.
        /// </summary>
        internal void PickPoint()
        {
            try
            {
                // Pick a point.
                XYZ targetPoint = m_document.Selection.PickPoint("Please pick a point.");
                SelectedPoint = targetPoint;
            }
            catch (Exceptions.OperationCanceledException)
            {
                // Point selection cancelled.
                SelectedPoint = null;
            }
        }
        /// <summary>
        /// Move an element to the point.
        /// </summary>
        /// <param name="elem">The element to be moved.</param>
        /// <param name="targetPoint">The location element to be moved.</param>
        internal void MoveElement(Element elem, XYZ targetPoint)
        {
            XYZ vecToMove = targetPoint - m_elemPickedPoint;
            m_elemPickedPoint = targetPoint;
            ElementTransformUtils.MoveElement(m_document.Document,elem.Id, vecToMove);
        }
    }
}

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