revit二次开发API示例 创建剖面视图
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2024/09/29
应用程序: CreateViewSection
Revit平台: 结构
Revit版本: 2011.0
首次发布版本: 9.0
编程语言: C#
技能水平: 中等
类别: 视图
类型: 外部命令
主题: 创建剖面视图。
摘要:该示例展示了如何在线性元素（如墙、地板或梁）的中点处生成一张剖面视图。
相关类:
Autodesk.Revit.UI.IExternalCommand
Autodesk.Revit.DB.Document
Autodesk.Revit.DB.BoundingBoxXYZ
Autodesk.Revit.DB.Element
Autodesk.Revit.DB.ElementSet
Autodesk.Revit.DB.Wall
Autodesk.Revit.DB.LocationCurve
Autodesk.Revit.DB.Line
Autodesk.Revit.DB.FamilyInstance
Autodesk.Revit.DB.Transform
Autodesk.Revit.DB.Structural.AnalyticalModel
Autodesk.Revit.DB.Structural.AnalyticalModelFrame
Autodesk.Revit.DB.Curve
Autodesk.Revit.DB.Floor
Autodesk.Revit.DB.Structural.AnalyticalModelFloor
项目文件:
Command.vb文件包含Command类，该类实现了IExternalCommand接口和在线性元素中点处生成剖面视图的生成过程。它还包含了一个名为CreateDraftingView的类，用于创建草图视图。
XYZMath.cs 它提供了关于由XYZ结构表示的点和向量的操作。
功能：
此示例提供以下功能：
- 检索所选的线性元素。
- 生成一个BoundingBoxXYZ实例，该实例将在NewViewSection()方法中使用。
- 设置其Max和Min属性。
- 生成一个Transform实例作为BoundingBoxXYZ的Transform属性，该实例定义了创建的视图的原点和方向（包括RightDirection、UpDirection和ViewDirection）。
- 使用BoundingBoxXYZ创建剖面视图。
实施:
1. 打开 Revit 结构。
2. 绘制一个线性元素(墙、结构地板或结构梁)。
3. 选择这个元素，执行外部命令 Command。
或
1. 打开 Revit 结构。
2. 执行外部命令 CreateDraftingView.
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
XYZMath.cs
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//
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// object code form for any purpose and without fee is hereby granted,
// provided that the above copyright notice appears in all copies and
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// UNINTERRUPTED OR ERROR FREE.
//
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// restrictions set forth in FAR 52.227-19 (Commercial Computer
// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
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using System;
using System.Collections.Generic;
using System.Text;
using Autodesk.Revit.DB;
namespace Revit.SDK.Samples.CreateViewSection.CS
{
/// <summary>
/// The helper class which give some operation about point and vector.
/// The point and vector are both presented by Autodesk.Revit.DB.XYZ structure.
/// </summary>
public class XYZMath
{
// Private Members
const Double PRECISION = 0.0000000001; // Define a precision of double data
// Methods
/// <summary>
/// Find the middle point of the line.
/// </summary>
/// <param name="first">the start point of the line</param>
/// <param name="second">the end point of the line</param>
/// <returns>the middle point of the line</returns>
public static Autodesk.Revit.DB.XYZ FindMidPoint(Autodesk.Revit.DB.XYZ first, Autodesk.Revit.DB.XYZ second)
{
double x = (first.X + second.X) / 2;
double y = (first.Y + second.Y) / 2;
double z = (first.Z + second.Z) / 2;
Autodesk.Revit.DB.XYZ midPoint = new Autodesk.Revit.DB.XYZ (x, y, z);
return midPoint;
}
/// <summary>
/// Find the distance between two points
/// </summary>
/// <param name="first">the first point</param>
/// <param name="second">the first point</param>
/// <returns>the distance of two points</returns>
public static double FindDistance(Autodesk.Revit.DB.XYZ first, Autodesk.Revit.DB.XYZ second)
{
double x = first.X - second.X;
double y = first.Y - second.Y;
double z = first.Z - second.Z;
return Math.Sqrt(x * x + y * y + z * z);
}
/// <summary>
/// Find the direction vector from first point to second point
/// </summary>
/// <param name="first">the first point</param>
/// <param name="second">the second point</param>
/// <returns>the direction vector</returns>
public static Autodesk.Revit.DB.XYZ FindDirection(Autodesk.Revit.DB.XYZ first, Autodesk.Revit.DB.XYZ second)
{
double x = second.X - first.X;
double y = second.Y - first.Y;
double z = second.Z - first.Z;
double distance = FindDistance(first, second);
Autodesk.Revit.DB.XYZ direction = new Autodesk.Revit.DB.XYZ (x / distance, y / distance, z / distance);
return direction;
}
/// <summary>
/// Find the right direction vector,
/// which is the same meaning of RightDirection property in View class
/// </summary>
/// <param name="viewDirection">the view direction vector</param>
/// <returns>the right direction vector</returns>
public static Autodesk.Revit.DB.XYZ FindRightDirection(Autodesk.Revit.DB.XYZ viewDirection)
{
// Because this example only allow the beam to be horizontal,
// the created viewSection should be vertical,
// the same thing can also be found when the user select wall or floor.
// So only need to turn 90 degree around Z axes will get Right Direction.
double x = -viewDirection.Y;
double y = viewDirection.X;
double z = viewDirection.Z;
Autodesk.Revit.DB.XYZ direction = new Autodesk.Revit.DB.XYZ (x, y, z);
return direction;
}
/// <summary>
/// Find the up direction vector,
/// which is the same meaning of UpDirection property in View class
/// </summary>
/// <param name="viewDirection">the view direction vector</param>
/// <returns>the up direction vector</returns>
public static Autodesk.Revit.DB.XYZ FindUpDirection(Autodesk.Revit.DB.XYZ viewDirection)
{
// Because this example only allow the beam to be horizontal,
// the created viewSection should be vertical,
// the same thing can also be found when the user select wall or floor.
// So UpDirection should be z axes.
Autodesk.Revit.DB.XYZ direction = new Autodesk.Revit.DB.XYZ (0, 0, 1);
return direction;
}
/// <summary>
/// Find the middle point of a profile.
/// This method is used to find out middle point of the selected wall or floor.
/// </summary>
/// <param name="curveArray">the array of curve which form the profile</param>
/// <returns>the middle point of the profile</returns>
public static Autodesk.Revit.DB.XYZ FindMiddlePoint(CurveArray curveArray)
{
// First form a point array which include all the end points of the curves
List<Autodesk.Revit.DB.XYZ> array = new List<Autodesk.Revit.DB.XYZ>();
foreach (Curve curve in curveArray)
{
Autodesk.Revit.DB.XYZ first = curve.GetEndPoint(0);
Autodesk.Revit.DB.XYZ second = curve.GetEndPoint(1);
array.Add(first);
array.Add(second);
}
// Second find the max and min value of three coordinate
double maxX = array[0].X; // the max x coordinate in the array
double minX = array[0].X; // the min x coordinate in the array
double maxY = array[0].Y; // the max y coordinate in the array
double minY = array[0].Y; // the min y coordinate in the array
double maxZ = array[0].Z; // the max z coordinate in the array
double minZ = array[0].Z; // the min z coordinate in the array
foreach (Autodesk.Revit.DB.XYZ curve in array)
{
if (maxX < curve.X)
{
maxX = curve.X;
}
if (minX > curve.X)
{
minX = curve.X;
}
if (maxY < curve.Y)
{
maxY = curve.Y;
}
if (minY > curve.Y)
{
minY = curve.Y;
}
if (maxZ < curve.Z)
{
maxZ = curve.Z;
}
if (minZ > curve.Z)
{
minZ = curve.Z;
}
}
// Third form the middle point using the average of max and min values
double x = (maxX + minX) / 2;
double y = (maxY + minY) / 2;
double z = (maxZ + minZ) / 2;
Autodesk.Revit.DB.XYZ midPoint = new Autodesk.Revit.DB.XYZ (x, y, z);
return midPoint;
}
/// <summary>
/// Find the view direction vector,
/// which is the same meaning of ViewDirection property in View class
/// </summary>
/// <param name="curveArray">the curve array which form wall's AnalyticalModel</param>
/// <returns>the view direction vector</returns>
public static Autodesk.Revit.DB.XYZ FindWallViewDirection(CurveArray curveArray)
{
Autodesk.Revit.DB.XYZ direction = new Autodesk.Revit.DB.XYZ ();
foreach (Curve curve in curveArray)
{
Autodesk.Revit.DB.XYZ startPoint = curve.GetEndPoint(0);
Autodesk.Revit.DB.XYZ endPoint = curve.GetEndPoint(1);
double distanceX = startPoint.X - endPoint.X;
double distanceY = startPoint.Y - endPoint.Y;
if(-PRECISION > distanceX || PRECISION < distanceX
|| -PRECISION > distanceY || PRECISION < distanceY)
{
Autodesk.Revit.DB.XYZ first = new Autodesk.Revit.DB.XYZ (startPoint.X, startPoint.Y, 0);
Autodesk.Revit.DB.XYZ second = new Autodesk.Revit.DB.XYZ (endPoint.X, endPoint.Y, 0);
direction = FindDirection(first, second);
break;
}
}
return direction;
}
/// <summary>
/// Find the view direction vector,
/// which is the same meaning of ViewDirection property in View class
/// </summary>
/// <param name="curveArray">the curve array which form floor's AnalyticalModel</param>
/// <returns>the view direction vector</returns>
public static Autodesk.Revit.DB.XYZ FindFloorViewDirection(CurveArray curveArray)
{
// Because the floor is always on the level,
// so each curve can give the direction information.
Curve curve = curveArray.get_Item(0);
Autodesk.Revit.DB.XYZ first = curve.GetEndPoint(0);
Autodesk.Revit.DB.XYZ second = curve.GetEndPoint(1);
return FindDirection(first, second);
}
}
}
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