Python+DRVT 从外部调用 Revit：批量创建门

昨天实现了一个完整的示例 Python+DRVT 从外部调用 Revit：批量创建墙，今天我们将在此基础上稍作扩展：每创建一堵墙之后，在其中间位置创建一扇门。

python 复制代码

from typing import List
import math
# drvt_pybind 支持多会话、多文档，先从简单的单会话、单文档开始
# MyContext是在Python中用户自定义的单会话、单文档的上下文管理类
from packs.core import MyContext, m2feet, feet2m, isNone

# 导入驱动 Revit 的核心模块
from drvt_pybind.Autodesk import Revit
from drvt_pybind.Autodesk.Revit import DB
from drvt_pybind.Autodesk.Revit.DB import Structure

# 遍历标高，返回按Elevation从低到高的List[DB.Level]
def getLevels(ctx : MyContext) -> List[DB.Level]:
    tmp : List[DB.Level] = []
    levelList = DB.FilteredElementCollector.ctor(ctx.session, ctx.doc).OfClass(ctx.session.typeof(DB.Level)).ToElements()
    for i in range(levelList.getCount()):
        l = DB.asLevel(levelList.getItem(i))
        if isNone(l):
            continue
        tmp.append(l)
    ret = sorted(tmp, key=lambda x:x.getElevation())
    return ret

# 遍历WallType，返回List[DB.WallType]
def getWallTypes(ctx : MyContext) -> List[DB.WallType]:
    wallTypeList : List[DB.WallType] = []
    listWt = DB.FilteredElementCollector.ctor(ctx.session, ctx.doc).OfClass(ctx.session.typeof(DB.WallType)).ToElements()
    for i in range(listWt.getCount()):
        wt = DB.asWallType(listWt.getItem(i))
        if isNone(wt):
            continue
        wallTypeList.append(wt)
    return wallTypeList

# 遍历门FamilySymbol，返回List[DB.FamilySymbol]
def getDoorFamilySymobls(ctx : MyContext) -> List[DB.FamilySymbol]:
    doorFamilySymobls : List[DB.FamilySymbol] = []
    listSy = DB.FilteredElementCollector.ctor(ctx.session, ctx.doc).OfClass(ctx.session.typeof(DB.FamilySymbol)).ToElements()
    for i in range(listSy.getCount()):
        fs = DB.asFamilySymbol(listSy.getItem(i))
        if isNone(fs):
            continue
        cat = fs.getCategory()
        if isNone(cat) or cat.getBuiltInCategory() != DB.BuiltInCategory.OST_Doors:
            continue;
        doorFamilySymobls.append(fs)
    return doorFamilySymobls


# 示例创建墙并在墙上创建门
def DoorCreation(ctx: MyContext) -> None:
    """
    本示例展示如何使用Python+DRVT，在外部让Revit批量创建墙并在墙上创建门
    """
    if ctx.doc is not None:
        ctx.closeDoc(True)

    template = "建筑样板.rte"
    fileName = "DoorCreation.rvt"
    err = ctx.createAndActiveDoc(template, fileName)
    if err != 0:
        raise AssertionError(f"创建项目文档失败: 错误码 {err}")

    session = ctx.session
    doc = ctx.doc
    
    # 取所有标高，缺省是两个
    levelList = getLevels(ctx)
    if len(levelList) < 2:
        raise AssertionError(f"标高过少，本示例用到2个标高")
    level0 = levelList[0].getId()
    level1 = levelList[1].getId()
    ele0 = levelList[0].getElevation()
    
    try:
        # 取所有墙类型
        wallTypeList = getWallTypes(ctx)
        # 取所有门类型
        doorFamilySymoblList = getDoorFamilySymobls(ctx)

        # 涉及到修改操作的，需要锁定并用事务包装
        ctx.lockAndStartTransaction("批量创建示例")

        docCreate = doc.getCreate()
        for i in range(0,10):
            # 取一个WallType
            wallType = wallTypeList[i % len(wallTypeList)]
            # 设置WallType
            ctx.doc.SetDefaultElementTypeId(DB.ElementTypeGroup.WallType, wallType.getId())
            # 这里使用轴线法
            # 创建墙的轴线
            x = m2feet(i*3)
            y1 = m2feet(3)
            y0 = -y1
            p0 = DB.XYZ.ctor(session, x, y0, ele0)
            p1 = DB.XYZ.ctor(session, x, y1, ele0)
            line = DB.Line.CreateBound(session, p0, p1)
            # 创建墙
            wall = DB.Wall.Create(session, doc, line, level0, False)
            # 取"顶部约束"参数
            p = wall.getParameter(DB.BuiltInParameter.WALL_HEIGHT_TYPE)
            # 更新其值为"标高2"的ID
            p.Set(level1)

            # 选择门FamilySymbol
            doorFamilySymbol = doorFamilySymoblList[i % len(doorFamilySymoblList)]
            if not doorFamilySymbol.getIsActive():
                doorFamilySymbol.Activate()

            # 确定门的位置
            doorPos = DB.XYZ.ctor(session, x, 0, ele0)
            # 创建门实例
            docCreate.NewFamilyInstance(doorPos, doorFamilySymbol, wall, levelList[0], Structure.StructuralType.NonStructural)

        # 提交事务并解锁，若没有错误则修改操作将会生效
        ctx.commitTransactionAndUnlock()
    except Exception as e:
        print(f"【异常】{e}")
        # 回滚事务并解锁
        ctx.rollbackTransactionAndUnlock()



# 下面这段代码，看过"创建新项目"示例的会很熟悉，就是照搬过来的
# 创建新的上下文（可以按需创建多个，意味着能直接管理多个 Revit 会话）
ctx = MyContext("在这里指定会话名称")
# 初始化会话（启动 Revit 进程实例）
ctx.initSession()

# 调用DoorCreation
DoorCreation(ctx)

# 保存文档并关闭
ctx.closeDoc(True)

# 结束会话（Revit 进程实例将退出）
ctx.dispose()