RevitSdkSamples/snapshot/2008/SDK/Samples/Openings/CS/OpeningInfo.cs

//
// (C) Copyright 2003-2007 by Autodesk, Inc.
//
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using System;
using System.Collections.Generic;
using System.Text;
using Autodesk.Revit.Elements;
using Autodesk.Revit.Geometry;
using System.Drawing;
using Autodesk.Revit;
using System.Collections.ObjectModel;

namespace Revit.SDK.Samples.Openings.CS
{
    /// <summary>
    /// This class contain the data about the Opening (get from Revit)
    /// Such as BoundingBox, Profile Curve...
    /// </summary>
    public class OpeningInfo
    {
        private Application m_revit; //Application of Revit
        private List<Line3D> m_lines = new List<Line3D>(); //contains lines in curve
        private Opening m_opening; //Opening got from Revit
        
        //OpeningProperty class which can use in PropertyGrid control
        private OpeningProperty m_property;
        private WireFrame m_sketch; //Profile information of opening
        private BoundingBox m_boundingBox;  //BoundingBox of Opening

        //property
        /// <summary>
        /// Property to get and set Application of Revit
        /// </summary>
        public Application Revit
        {
            get
            {
                return m_revit;
            }
            set
            {
                if (value != m_revit)
                    m_revit = value;
            }
        }

        /// <summary>
        /// Property to get Opening store in OpeningInfo
        /// </summary>
        public Opening Opening
        {
            get
            {
                return m_opening;
            }
        }

        /// <summary>
        /// Property to get Name and Id 
        /// eg: "Opening Cut (114389)"
        /// </summary>
        public string NameAndId
        {
            get
            {
                return String.Concat(m_opening.Name, " (", m_opening.Id.Value.ToString(), ")");
            }
        }

        /// <summary>
        /// Property to get bool the define whether opening is Shaft Opening
        /// </summary>
        public bool IsShaft
        {
            get
            {
                if (null != m_opening.Category)
                {
                    if ("Shaft Openings" == m_opening.Category.Name)
                        return true;
                    else
                    {
                        return false;
                    }
                }
                else
                {
                    return false;
                }
            }
        }

        /// <summary>
        /// Property to get OpeningProperty class 
        /// which can use in PropertyGrid control
        /// </summary>
        public OpeningProperty Property
        {
            get
            {
                return m_property;
            }
        }

        /// <summary>
        /// Property to get Profile information of opening
        /// </summary>
        public WireFrame Sketch
        {
            get
            {
                return m_sketch;
            }
        }

        /// <summary>
        /// Property to get BoundingBox of Opening
        /// </summary>
        public BoundingBox BoundingBox
        {
            get
            {
                return m_boundingBox;
            }
        }

        /// <summary>
        /// The default constructor, 
        /// get the information we want from Opening
        /// get OpeningProperty, BoundingBox and Profile
        /// </summary>
        /// <param name="opening">an opening in revit</param>
        /// <param name="app">application object</param>
        public OpeningInfo(Opening opening, Application app)
        {
            m_opening = opening;
            m_revit = app;

            //get OpeningProperty which can use in PropertyGrid control
            OpeningProperty openingProperty = new OpeningProperty(m_opening);
            m_property = openingProperty;

            //get BoundingBox of Opening
            BoundingBoxXYZ boxXYZ = m_opening.get_BoundingBox(m_revit.ActiveDocument.ActiveView);
            BoundingBox boundingBox = new BoundingBox(boxXYZ);
            m_boundingBox = boundingBox;

            //get profile
            GetProfile();
        }

        /// <summary>
        /// get Profile of Opening
        /// </summary>
        private void GetProfile()
        {
            CurveArray curveArray = m_opening.BoundaryCurves;
            if (null != curveArray)
            {
                m_lines.Clear();
                foreach (Curve curve in curveArray)
                {
                    //if curve is a circle, can not get the curve
                    if (!curve.IsBound)
                    {
                        m_sketch = null;
                        return;
                    }
                    XYZArray points = curve.Tessellate();
                    AddLine(points);
                }
                WireFrame wireFrameSketch = new WireFrame(new ReadOnlyCollection<Line3D>(m_lines));
                m_sketch = wireFrameSketch;
            }
            else if (m_opening.IsRectBoundary)
            {
                //if opening profile is RectBoundary, 
                //just can get profile info from BoundaryRect Property
                m_lines.Clear();
                XYZArray boundRect = m_opening.BoundaryRect;
                XYZArray RectPoints = GetPoints(boundRect);
                AddLine(RectPoints);
                WireFrame wireFrameSketch = new WireFrame(new ReadOnlyCollection<Line3D>(m_lines));
                m_sketch = wireFrameSketch;
            }
            else
            {
                m_sketch = null;
            }
        }

        /// <summary>
        /// get four corner points of a rectangular in same plane
        /// </summary>
        /// <param name="boundRect">an array contain two XYZ struct store the max and min 
        /// coordinate of rectangular</param>
        private XYZArray GetPoints(XYZArray boundRect)
        {
            XYZArray points = new XYZArray();
            XYZ p1 = boundRect.get_Item(0);
            points.Append(ref p1);

            XYZ p2 = new XYZ();
            p2.X = boundRect.get_Item(0).X;
            p2.Y = boundRect.get_Item(0).Y;
            p2.Z = boundRect.get_Item(1).Z;
            points.Append(ref p2);

            XYZ p3 = boundRect.get_Item(1);
            points.Append(ref p3);

            XYZ p4 = new XYZ();
            p4.X = boundRect.get_Item(1).X;
            p4.Y = boundRect.get_Item(1).Y;
            p4.Z = boundRect.get_Item(0).Z;
            points.Append(ref p4);

            //make rectangle close
            XYZ p5 = boundRect.get_Item(0);
            points.Append(ref p5);

            return points;
        }

        /// <summary>
        /// get line from XYZArray(points) and add line to m_lines list
        /// </summary>
        /// <param name="points">a XYZArray contain points of the Curve</param>
        private void AddLine(XYZArray points)
        {
            if (null == points || 0 == points.Size)
            {
                return;
            }

            Autodesk.Revit.Geometry.XYZ previousPoint;
            previousPoint = points.get_Item(0);

            for (int i = 1; i < points.Size; i++)
            {
                Autodesk.Revit.Geometry.XYZ point;
                point = points.get_Item(i);

                Line3D line = new Line3D();
                Vector pointStart = new Vector();
                Vector pointEnd = new Vector();
                for (int j = 0; j < 3; j++)
                {
                    pointStart[j] = previousPoint[j];
                    pointEnd[j] = point[j];
                }
                line.StartPoint = pointStart;
                line.EndPoint = pointEnd;

                m_lines.Add(line);

                previousPoint = point;
            }
        }
    }
}