附录E示例-项目设置_1

示例概述

意图

此场景封装了使用正确单元和项目上下文设置的模型。-它将项目单位设置为国际单位制或基于换算的单位。-它包含一个GUID为2DAvEupIz0HQr73cMaawtY的项目“Boileplate”，该项目建立了IFC文件交换的最低限度。-它为几何图形建立了一个几何上下文。

先决条件

此方案基于以下其他方案：-无

所容纳之物

此场景包含以下概念和/或IFC实体：-项目上下文-IfcProject-几何上下文-IfcGeometricRepresentationContext-默认单位分配-IfcUnitAssignment-IfcUnit-IfcSIUnit-IfcConversionBasedUnit-IfcMonetaryUnit-IfcMeasureWithUnit

支持文件

以下文件对应于此场景：

补充说明

该UT确定了IFC文件中IFC内容的最小值。里面没有产品、几何图形、财产或任何东西。主要目的是为所有UT提供基础，其中将包括样板内容，但未详细解释。

IFC-SPF source

ISO-10303-21;

/* ------- This file was produced manually for IFC Infra Extension Deployment project. --------- */
/* ------- The file should come with a README.md with supplementing info. ---------------------- */
/* ------- Stefan Jaud, [email protected], 2020.07.15. ---------------------------------------- */

HEADER;
FILE_DESCRIPTION (('ViewDefinition []'), '2;1');
FILE_NAME ('UT_ProjectSetup_1.ifc', '2020-07-15T18:00:00', ('Stefan Jaud'), ('bSI Infra Extension Deployment project'), 'manual text editing', 'SublimeText 3.0', 'GitHub pull request');
FILE_SCHEMA (('IFC4X3_RC1'));
ENDSEC;

DATA;

/* ------- General definitions ----------------------------------------------------------------- */
#1 = IFCDIMENSIONALEXPONENTS(0, 0, 0, 0, 0, 0, 0);
/* ------- Reusable X direction ---------------------------------------------------------------- */
#2 = IFCDIRECTION((1., 0., 0.));
/* ------- Reusable Y direction ---------------------------------------------------------------- */
#3 = IFCDIRECTION((0., 1., 0.));
/* ------- Reusable Z direction ---------------------------------------------------------------- */
#4 = IFCDIRECTION((0., 0., 1.));
/* ------- Reusable origin --------------------------------------------------------------------- */
#5 = IFCCARTESIANPOINT((0., 0., 0.));

/* ------- IfcProject is the top most element in the project structure ------------------------- */
#16 = IFCPROJECT('2DAvEupIz0HQr73cMaawtY', $, 'BoilerPlate', 'The bare minimum of an IFC file exchange with no content, only boilerplate code.', $, $, $, (#28), #17);

/* ------- IfcUnitAssignment defines the global units for measures and values ------------------ */
/* ------- when the units are not otherwise defined -------------------------------------------- */
#17 = IFCUNITASSIGNMENT((#18, #19, #20, #24, #25, #26, #27));
#18 = IFCSIUNIT(*, .LENGTHUNIT., $, .METRE.);
#19 = IFCSIUNIT(*, .AREAUNIT., $, .SQUARE_METRE.);
#20 = IFCSIUNIT(*, .VOLUMEUNIT., $, .CUBIC_METRE.);

/* ------- Example of non-SI unit used for angles: degree instead of radian -------------------- */
#22 = IFCSIUNIT(*, .PLANEANGLEUNIT., $, .RADIAN.);
#23 = IFCMEASUREWITHUNIT(IFCPLANEANGLEMEASURE(0.017453292519943295), #22);
#24 = IFCCONVERSIONBASEDUNIT(#1, .PLANEANGLEUNIT., 'degree', #23);

#25 = IFCSIUNIT(*, .MASSUNIT., .KILO., .GRAM.);
#26 = IFCSIUNIT(*, .TIMEUNIT., $, .SECOND.);
#27 = IFCMONETARYUNIT('EUR');

/* ------- IfcGeometricRepresentationContext is the global context of the geometry ------------- */
#28 = IFCGEOMETRICREPRESENTATIONCONTEXT($, 'Model', 3, 1.E-6, #29, #3);
#29 = IFCAXIS2PLACEMENT3D(#5, #4, #2);

ENDSEC;
END-ISO-10303-21;

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