ArcMap

封闭多面体

描述

根据非闭合多面体要素创建闭合多面体要素。

使用方法

  • 此工具主要用于沿几何下部有开口的多面体要素。封闭的输出将沿着输入要素叠加，并会遮挡输入要素中可能出现的任何悬垂。

  • 将对所有多面体要素进行评估以确定哪些多面体是闭合的。已闭合的要素将在不做任何修改的情况下复制到输出多面体。是否为闭合 3D 工具可用于快速确定输入要素类中是否包含任何未闭合的多面体要素。

  • 此工具是提供针对 3D 要素的分析函数的 3D 集合运算符。有关什么是集合运算符以及如何使用它们的详细信息，请参阅使用 3D 集合运算符。

语法

arcpy.ddd.EncloseMultiPatch(in_features, out_feature_class, {grid_size})
参数说明数据类型
in_features

用于构造闭合多面体的多面体要素。

Feature Layer
out_feature_class

输出闭合多面体要素。

Feature Class
grid_size
（可选）

用于构造闭合多面体要素的分辨率。此值使用输入要素空间参考的线性单位定义。

Double

代码示例

EncloseMultiPatch 示例 1（Python 窗口）

下面的示例演示了如何在 Python 窗口中使用此工具。

import arcpy
from arcpy import env

arcpy.CheckOutExtension('3D')
env.workspace = 'C:/data'
arcpy.EncloseMultiPatch_3d('unclosed_features.shp', 
                          'enclosed_features.shp', 0.5)
EncloseMultiPatch 示例 2（独立脚本）

下面的示例演示了如何在独立 Python 脚本中使用此工具。

'''*********************************************************************
Name: Model Shadows For GeoVRML Models
Description: Creates a model of the shadows cast by GeoVRML models 
             imported to a multipatch feature class for a range of dates
             and times. A range of times from the start time and end 
             time can also be specified by setting the EnforceTimes 
             Boolean to True. This sample is designed to be used in a 
             script tool.
*********************************************************************'''
# Import system modules
import arcpy
from datetime import datetime, time, timedelta

#*************************  Script Variables  **************************
inFiles = arcpy.GetParameterAsText(0) # list of input features
spatialRef = arcpy.GetParameterAsText(1) # list of GeoVRML files
outFC = arcpy.GetParameterAsText(2) # multipatch from 3D files
inTimeZone = arcpy.GetParameterAsText(3) # time zone
startDate = arcpy.GetParameter(4) # starting date as datetime
endDate = arcpy.GetParameter(5) # ending date as datetime
dayInterval = arcpy.GetParameter(6) # day interval as long (0-365)
minInterval = arcpy.GetParameter(7) # minute interval as long (0-60)
enforceTime = arcpy.GetParameter(8) # minute interval as Boolean
outShadows = arcpy.GetParameterAsText(9) # output shadow models
outIntersection = arcpy.GetParameterAsText(10) # shadow & bldg intersection

# Function to find all possible date/time intervals for shadow modelling
def time_list():
    dt_result = [startDate]
    if dayInterval:
        if endDate: #Defines behavior when end date is supplied
            while startDate < endDate:
                startDate += timedelta(days=dayInterval)
                dt_result.append(startDate)
            dt_result.append(endDate)
        else: # Behavior when end date is not given
            daymonthyear = datetime.date(startDate)
            while startDate <= datetime(daymonthyear.year, 12, 31, 23, 59):
                startDate += timedelta(days=dayInterval)
                dt_result.append(startDate)
    return dt_result

try:
    arcpy.CheckOutExtension('3D')
    importFC = arcpy.CreateUniqueName('geovrml_import', 'in_memory')
    # Import GeoVRML files to in-memory feature
    arcpy.ddd.Import3DFiles(inFiles, importFC, 'ONE_FILE_ONE_FEATURE', 
                            spatialRef, 'Z_IS_UP', 'wrl')
    # Ensure that building models are closed
    arcpy.ddd.EncloseMultiPatch(importFC, outFC, 0.05)
    # Discard in-memory feature
    arcpy.management.Delete(importFC)
    dt_result = time_list()
    for dt in dt_result:
        if dt == dt_result[0]:
            shadows = outShadows
        else:
            shadows = arcpy.CreateUniqueName('shadow', 'in_memory')
        arcpy.ddd.SunShadowVolume(outFC, dt, shadows, 'ADJUST_FOR_DST', 
                                  inTimeZone, '', minInterval, 'MINUTES')
        if dt is not dt_result[0]:
            arcpy.management.Append(shadows, outShadows)
            arcpy.management.Delete(shadows)
    arcpy.ddd.Intersect3D(outFC, outIntersection, outShadows, 'SOLID')
    arcpy.CheckInExtension('3D')
except arcpy.ExecuteError:
    print arcpy.GetMessages()
except:
    # Get the traceback object
    tb = sys.exc_info()[2]
    tbinfo = traceback.format_tb(tb)[0]
    # Concatenate error information into message string
    pymsg = "PYTHON ERRORS:\nTraceback info:\n{0}\nError Info:\n{1}"\
          .format(tbinfo, str(sys.exc_info()[1]))
    msgs = "ArcPy ERRORS:\n {0}\n".format(arcpy.GetMessages(2))
    # Return python error messages for script tool or Python Window
    arcpy.AddError(pymsg)
    arcpy.AddError(msgs)

环境

许可信息

  • Basic: 需要 3D Analyst
  • Standard: 需要 3D Analyst
  • Advanced: 需要 3D Analyst

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