xBIM 基础05 3D墙案例
使用编码的形式去生成一堵墙的模型需要做很多的工作。
1 using System;
2 using System.Collections.Generic;
3 using System.Diagnostics;
4 using System.Linq;
5 using Xbim.Common;
6 using Xbim.Common.Step21;
7 using Xbim.Ifc;
8 using Xbim.IO;
9 using Xbim.Ifc4.ActorResource;
10 using Xbim.Ifc4.DateTimeResource;
11 using Xbim.Ifc4.ExternalReferenceResource;
12 using Xbim.Ifc4.PresentationOrganizationResource;
13 using Xbim.Ifc4.GeometricConstraintResource;
14 using Xbim.Ifc4.GeometricModelResource;
15 using Xbim.Ifc4.GeometryResource;
16 using Xbim.Ifc4.Interfaces;
17 using Xbim.Ifc4.Kernel;
18 using Xbim.Ifc4.MaterialResource;
19 using Xbim.Ifc4.MeasureResource;
20 using Xbim.Ifc4.ProductExtension;
21 using Xbim.Ifc4.ProfileResource;
22 using Xbim.Ifc4.PropertyResource;
23 using Xbim.Ifc4.QuantityResource;
24 using Xbim.Ifc4.RepresentationResource;
25 using Xbim.Ifc4.SharedBldgElements;
26
27
28 namespace HelloWall
29 {
30 class Program
31 {
32 /// <summary>
33 /// 此示例演示了创建包含单个标准事例墙的符合IFC模型的最小步骤。
34 /// </summary>
35 static int Main()
36 {
37 // 首先创建并初始化一个名为hello wall的模型
38 Console.WriteLine("Initialising the IFC Project 初始化 IFc 项目....");
39 using (var model = CreateandInitModel("HelloWall"))
40 {
41 if (model != null)
42 {
43 IfcBuilding building = CreateBuilding(model, "Default Building 默认建筑");
44 IfcBuildingStorey storey = CreateStorey(building);
45 IfcWallStandardCase wall = CreateWall(model, 4000, 300, 2400);
46
47 if(wall != null)
48 {
49 AddPropertiesToWall(model, wall);
50 }
51 using (var txn = model.BeginTransaction("Add Wall 添加墙"))
52 {
53 building.AddToSpatialDecomposition(storey);
54 storey.AddElement(wall);
55 txn.Commit();
56 }
57
58 if (wall != null)
59 {
60 try
61 {
62 Console.WriteLine("Standard Wall successfully created....");
63
64 model.SaveAs("HelloWallIfc4.ifc", StorageType.Ifc); // 保存到文件中
65
66 Console.WriteLine("HelloWallIfc4.ifc has been successfully written");
67 }
68 catch (Exception e)
69 {
70 Console.WriteLine("Failed to save HelloWall.ifc");
71 Console.WriteLine(e.Message);
72 }
73 }
74 }
75 else
76 {
77 Console.WriteLine("Failed to initialise the model");
78 }
79 }
80 Console.WriteLine("Press any key to exit to view the IFC file....");
81 Console.ReadKey();
82 LaunchNotepad("HelloWallIfc4.ifc");
83 return 0;
84 }
85
86 private static IfcBuildingStorey CreateStorey(IfcBuilding building)
87 {
88 var model = building.Model;
89 IfcBuildingStorey storey;
90 using (var txn = model.BeginTransaction("Storey creation"))
91 {
92 storey = model.Instances.New<IfcBuildingStorey>(s =>
93 {
94 s.Name = "Default storey";
95 s.Elevation = 0.0;
96 });
97 txn.Commit();
98 }
99 return storey;
100 }
101
102 /// <summary>
103 /// 在记事本中打开指定的文件
104 /// </summary>
105 /// <param name="fileName"></param>
106 private static void LaunchNotepad(string fileName)
107 {
108 try
109 {
110 var p = new Process { StartInfo = { FileName = fileName, CreateNoWindow = false } };
111 p.Start();
112 }
113 catch (Exception ex)
114 {
115 Console.WriteLine("Exception Occurred :{0},{1}", ex.Message, ex.StackTrace);
116 }
117 }
118
119 /// <summary>
120 /// 创建建筑对象
121 /// </summary>
122 /// <param name="model"></param>
123 /// <param name="name">建筑名称</param>
124 /// <returns></returns>
125 private static IfcBuilding CreateBuilding(IfcStore model, string name)
126 {
127 using (var txn = model.BeginTransaction("Create Building 创建建筑对象"))
128 {
129 var building = model.Instances.New<IfcBuilding>();
130 building.Name = name;
131 building.CompositionType = IfcElementCompositionEnum.ELEMENT; // 组成类型
132
133 var localPlacement = model.Instances.New<IfcLocalPlacement>();
134 building.ObjectPlacement = localPlacement;
135
136 var placement = model.Instances.New<IfcAxis2Placement3D>();
137 localPlacement.RelativePlacement = placement;
138 placement.Location = model.Instances.New<IfcCartesianPoint>(p => p.SetXYZ(0, 0, 0));
139
140 // 获取第一个或者默认的项目
141 var project = model.Instances.OfType<IfcProject>().FirstOrDefault();
142 if(project != null)
143 {
144 project.AddBuilding(building);
145 }
146
147 txn.Commit();
148
149 return building;
150 }
151 }
152
153 /// <summary>
154 /// 设置任何模型必须提供的基本参数、单位、所有权等
155 /// </summary>
156 /// <param name="projectName">项目名称</param>
157 /// <returns></returns>
158 private static IfcStore CreateandInitModel(string projectName)
159 {
160 // 首先，我们需要为新模型中的数据所有权设置一些凭证
161 var credentials = new XbimEditorCredentials
162 {
163 ApplicationDevelopersName = "xBimTeam",
164 ApplicationFullName = "Hello Wall Application",
165 ApplicationIdentifier = "HelloWall.exe",
166 ApplicationVersion = "1.0",
167 EditorsFamilyName = "Team",
168 EditorsGivenName = "xBIM",
169 EditorsOrganisationName = "xBimTeam"
170 };
171
172 // 现在我们可以创建一个ifcstore，它是ifc4格式的，将保存在内存中而不是数据库中。
173 // 如果模型的容量大于50MB，或者需要健壮的事务，那么数据库在性能方面通常更好。
174
175 var model = IfcStore.Create(credentials, XbimSchemaVersion.Ifc4, XbimStoreType.InMemoryModel);
176
177 // 开始事务，因为对模型的所有更改都是ACID
178 using (var txn = model.BeginTransaction("Initialise Model 初始化模型"))
179 {
180 var project = model.Instances.New<IfcProject>(); // 创建一个项目
181 project.Initialize(ProjectUnits.SIUnitsUK); // 将单位设置为si（mm和米）
182 project.Name = projectName;
183
184 txn.Commit(); // 现在提交更改，否则它们将在using语句的范围结束时回滚。
185 }
186
187 return model;
188 }
189
190 /// <summary>
191 /// 创建一个墙和它的几何图形，许多几何图形表示是可能的，并选择挤压矩形示意图，因为这通常用于标准情况下的墙。
192 /// </summary>
193 /// <param name="model"></param>
194 /// <param name="length">矩形足迹的长度</param>
195 /// <param name="width">矩形足迹的宽度（墙的宽度）</param>
196 /// <param name="height">挤出墙的高度，挤出是垂直的</param>
197 /// <returns></returns>
198 static private IfcWallStandardCase CreateWall(IfcStore model, double length, double width, double height)
199 {
200 using (var txn = model.BeginTransaction("Create Wall 创建墙"))
201 {
202 var wall = model.Instances.New<IfcWallStandardCase>(); //IfcWallStandardCase：IFC墙标准案例
203 wall.Name = "A Standard rectangular wall 标准矩形墙";
204
205 // 将墙表示为矩形轮廓，墙的矩形剖面
206 var rectProf = model.Instances.New<IfcRectangleProfileDef>(); //IfcRectangleProfileDef：IFC矩形轮廓定义
207 rectProf.ProfileType = IfcProfileTypeEnum.AREA;
208 rectProf.XDim = width;
209 rectProf.YDim = length;
210
211 var insertPoint = model.Instances.New<IfcCartesianPoint>(); //IfcCartesianPoint：IFc 笛卡尔点
212 insertPoint.SetXY(0, 400); //在任意位置插入
213 rectProf.Position = model.Instances.New<IfcAxis2Placement2D>();
214 rectProf.Position.Location = insertPoint;
215
216 // 模型区域实心
217 var body = model.Instances.New<IfcExtrudedAreaSolid>(); //IfcExtrudedAreaSolid：IFC拉伸区域实体
218 body.Depth = height;
219 body.SweptArea = rectProf;
220 body.ExtrudedDirection = model.Instances.New<IfcDirection>();//IfcDirection：IFC方向
221 body.ExtrudedDirection.SetXYZ(0, 0, 1);
222
223 // 在模型中插入几何参数
224 var origin = model.Instances.New<IfcCartesianPoint>(); //IfcCartesianPoint：IFc 笛卡尔点
225 origin.SetXYZ(0, 0, 0);
226 body.Position = model.Instances.New<IfcAxis2Placement3D>();
227 body.Position.Location = origin;
228
229 // 创建定义形状以保存几何图形
230 var shape = model.Instances.New<IfcShapeRepresentation>();//IfcShapeRepresentation：IFC形状表示
231 var modelContext = model.Instances.OfType<IfcGeometricRepresentationContext>().FirstOrDefault(); //IfcGeometricRepresentationContext：IFC几何表示上下文
232 shape.ContextOfItems = modelContext;
233 shape.RepresentationType = "SweptSolid";
234 shape.RepresentationIdentifier = "Body";
235 shape.Items.Add(body);
236
237 // 创建产品定义并将模型几何图形添加到墙中
238 var rep = model.Instances.New<IfcProductDefinitionShape>(); //IfcProductDefinitionShape：IFC产品定义形状
239 rep.Representations.Add(shape);
240 wall.Representation = rep;
241
242 // 现在将墙放置到模型中
243 var lp = model.Instances.New<IfcLocalPlacement>();
244 var ax3D = model.Instances.New<IfcAxis2Placement3D>();
245 ax3D.Location = origin;
246 ax3D.RefDirection = model.Instances.New<IfcDirection>();
247 ax3D.RefDirection.SetXYZ(0, 1, 0);
248 ax3D.Axis = model.Instances.New<IfcDirection>();
249 ax3D.Axis.SetXYZ(0, 0, 1);
250 lp.RelativePlacement = ax3D;
251 wall.ObjectPlacement = lp;
252
253 // Where Clause: ifcwallstandardard 依赖于 ifcmmateriallayersetusage 的规定。
254 var ifcMaterialLayerSetUsage = model.Instances.New<IfcMaterialLayerSetUsage>();
255 var ifcMaterialLayerSet = model.Instances.New<IfcMaterialLayerSet>();
256 var ifcMaterialLayer = model.Instances.New<IfcMaterialLayer>();
257 ifcMaterialLayer.LayerThickness = 10;
258 ifcMaterialLayerSet.MaterialLayers.Add(ifcMaterialLayer);
259 ifcMaterialLayerSetUsage.ForLayerSet = ifcMaterialLayerSet;
260 ifcMaterialLayerSetUsage.LayerSetDirection = IfcLayerSetDirectionEnum.AXIS2;
261 ifcMaterialLayerSetUsage.DirectionSense = IfcDirectionSenseEnum.NEGATIVE;
262 ifcMaterialLayerSetUsage.OffsetFromReferenceLine = 150;
263
264 // 将材料添加到墙商
265 var material = model.Instances.New<IfcMaterial>();
266 material.Name = "some material";
267 var ifcRelAssociatesMaterial = model.Instances.New<IfcRelAssociatesMaterial>();
268 ifcRelAssociatesMaterial.RelatingMaterial = material;
269 ifcRelAssociatesMaterial.RelatedObjects.Add(wall);
270
271 ifcRelAssociatesMaterial.RelatingMaterial = ifcMaterialLayerSetUsage;
272
273 // ifcPresentationLayerAssignment 对于 ifcwall 或 ifcwallstandardcase 中的 CAD 演示是必须的
274 var ifcPresentationLayerAssignment = model.Instances.New<IfcPresentationLayerAssignment>();
275 ifcPresentationLayerAssignment.Name = "some ifcPresentationLayerAssignment";
276 ifcPresentationLayerAssignment.AssignedItems.Add(shape);
277
278
279 // 如果 IfcPolyline 具有两个点，则对于 IfcWall 是必需的
280 var ifcPolyline = model.Instances.New<IfcPolyline>();
281 var startPoint = model.Instances.New<IfcCartesianPoint>();
282 startPoint.SetXY(0, 0);
283 var endPoint = model.Instances.New<IfcCartesianPoint>();
284 endPoint.SetXY(4000, 0);
285 ifcPolyline.Points.Add(startPoint);
286 ifcPolyline.Points.Add(endPoint);
287
288 var shape2D = model.Instances.New<IfcShapeRepresentation>();
289 shape2D.ContextOfItems = modelContext;
290 shape2D.RepresentationIdentifier = "Axis";
291 shape2D.RepresentationType = "Curve2D";
292 shape2D.Items.Add(ifcPolyline);
293 rep.Representations.Add(shape2D);
294 txn.Commit();
295
296 return wall;
297 }
298 }
299
300 /// <summary>
301 /// 向墙添加一些属性,
302 /// </summary>
303 /// <param name="model">XbimModel</param>
304 /// <param name="wall"></param>
305 static private void AddPropertiesToWall(IfcStore model, IfcWallStandardCase wall)
306 {
307 using (var txn = model.BeginTransaction("Create Wall"))
308 {
309 CreateElementQuantity(model, wall);
310 CreateSimpleProperty(model, wall);
311 txn.Commit();
312 }
313 }
314
315 private static void CreateSimpleProperty(IfcStore model, IfcWallStandardCase wall)
316 {
317 var ifcPropertySingleValue = model.Instances.New<IfcPropertySingleValue>(psv =>
318 {
319 psv.Name = "IfcPropertySingleValue:Time";
320 psv.Description = "";
321 psv.NominalValue = new IfcTimeMeasure(150.0);
322 psv.Unit = model.Instances.New<IfcSIUnit>(siu =>
323 {
324 siu.UnitType = IfcUnitEnum.TIMEUNIT;
325 siu.Name = IfcSIUnitName.SECOND;
326 });
327 });
328 var ifcPropertyEnumeratedValue = model.Instances.New<IfcPropertyEnumeratedValue>(pev =>
329 {
330 pev.Name = "IfcPropertyEnumeratedValue:Music";
331 pev.EnumerationReference = model.Instances.New<IfcPropertyEnumeration>(pe =>
332 {
333 pe.Name = "Notes";
334 pe.EnumerationValues.Add(new IfcLabel("Do"));
335 pe.EnumerationValues.Add(new IfcLabel("Re"));
336 pe.EnumerationValues.Add(new IfcLabel("Mi"));
337 pe.EnumerationValues.Add(new IfcLabel("Fa"));
338 pe.EnumerationValues.Add(new IfcLabel("So"));
339 pe.EnumerationValues.Add(new IfcLabel("La"));
340 pe.EnumerationValues.Add(new IfcLabel("Ti"));
341 });
342 pev.EnumerationValues.Add(new IfcLabel("Do"));
343 pev.EnumerationValues.Add(new IfcLabel("Re"));
344 pev.EnumerationValues.Add(new IfcLabel("Mi"));
345
346 });
347 var ifcPropertyBoundedValue = model.Instances.New<IfcPropertyBoundedValue>(pbv =>
348 {
349 pbv.Name = "IfcPropertyBoundedValue:Mass";
350 pbv.Description = "";
351 pbv.UpperBoundValue = new IfcMassMeasure(5000.0);
352 pbv.LowerBoundValue = new IfcMassMeasure(1000.0);
353 pbv.Unit = model.Instances.New<IfcSIUnit>(siu =>
354 {
355 siu.UnitType = IfcUnitEnum.MASSUNIT;
356 siu.Name = IfcSIUnitName.GRAM;
357 siu.Prefix = IfcSIPrefix.KILO;
358 });
359 });
360
361 var definingValues = new List<IfcReal> { new IfcReal(100.0), new IfcReal(200.0), new IfcReal(400.0),
new IfcReal(800.0), new IfcReal(1600.0), new IfcReal(3200.0), };
362 var definedValues = new List<IfcReal> { new IfcReal(20.0), new IfcReal(42.0), new IfcReal(46.0),
new IfcReal(56.0), new IfcReal(60.0), new IfcReal(65.0), };
363 var ifcPropertyTableValue = model.Instances.New<IfcPropertyTableValue>(ptv =>
364 {
365 ptv.Name = "IfcPropertyTableValue:Sound";
366 foreach (var item in definingValues)
367 {
368 ptv.DefiningValues.Add(item);
369 }
370 foreach (var item in definedValues)
371 {
372 ptv.DefinedValues.Add(item);
373 }
374 ptv.DefinedUnit = model.Instances.New<IfcContextDependentUnit>(cd =>
375 {
376 cd.Dimensions = model.Instances.New<IfcDimensionalExponents>(de =>
377 {
378 de.LengthExponent = 0;
379 de.MassExponent = 0;
380 de.TimeExponent = 0;
381 de.ElectricCurrentExponent = 0;
382 de.ThermodynamicTemperatureExponent = 0;
383 de.AmountOfSubstanceExponent = 0;
384 de.LuminousIntensityExponent = 0;
385 });
386 cd.UnitType = IfcUnitEnum.FREQUENCYUNIT;
387 cd.Name = "dB";
388 });
389
390
391 });
392
393 var listValues = new List<IfcLabel> { new IfcLabel("Red"),
new IfcLabel("Green"),
new IfcLabel("Blue"),
new IfcLabel("Pink"),
new IfcLabel("White"),
new IfcLabel("Black"), };
394 var ifcPropertyListValue = model.Instances.New<IfcPropertyListValue>(plv =>
395 {
396 plv.Name = "IfcPropertyListValue:Colours";
397 foreach (var item in listValues)
398 {
399 plv.ListValues.Add(item);
400 }
401 });
402
403 var ifcMaterial = model.Instances.New<IfcMaterial>(m =>
404 {
405 m.Name = "Brick";
406 });
407 var ifcPrValueMaterial = model.Instances.New<IfcPropertyReferenceValue>(prv =>
408 {
409 prv.Name = "IfcPropertyReferenceValue:Material";
410 prv.PropertyReference = ifcMaterial;
411 });
412
413
414 var ifcMaterialList = model.Instances.New<IfcMaterialList>(ml =>
415 {
416 ml.Materials.Add(ifcMaterial);
417 ml.Materials.Add(model.Instances.New<IfcMaterial>(m => { m.Name = "Cavity"; }));
418 ml.Materials.Add(model.Instances.New<IfcMaterial>(m => { m.Name = "Block"; }));
419 });
420
421
422 var ifcMaterialLayer = model.Instances.New<IfcMaterialLayer>(ml =>
423 {
424 ml.Material = ifcMaterial;
425 ml.LayerThickness = 100.0;
426 });
427 var ifcPrValueMatLayer = model.Instances.New<IfcPropertyReferenceValue>(prv =>
428 {
429 prv.Name = "IfcPropertyReferenceValue:MaterialLayer";
430 prv.PropertyReference = ifcMaterialLayer;
431 });
432
433 var ifcDocumentReference = model.Instances.New<IfcDocumentReference>(dr =>
434 {
435 dr.Name = "Document";
436 dr.Location = "c://Documents//TheDoc.Txt";
437 });
438 var ifcPrValueRef = model.Instances.New<IfcPropertyReferenceValue>(prv =>
439 {
440 prv.Name = "IfcPropertyReferenceValue:Document";
441 prv.PropertyReference = ifcDocumentReference;
442 });
443
444 var ifcTimeSeries = model.Instances.New<IfcRegularTimeSeries>(ts =>
445 {
446 ts.Name = "Regular Time Series";
447 ts.Description = "Time series of events";
448 ts.StartTime = new IfcDateTime("2015-02-14T12:01:01");
449 ts.EndTime = new IfcDateTime("2015-05-15T12:01:01");
450 ts.TimeSeriesDataType = IfcTimeSeriesDataTypeEnum.CONTINUOUS;
451 ts.DataOrigin = IfcDataOriginEnum.MEASURED;
452 ts.TimeStep = 604800; //7 days in secs
453 });
454
455 var ifcPrValueTimeSeries = model.Instances.New<IfcPropertyReferenceValue>(prv =>
456 {
457 prv.Name = "IfcPropertyReferenceValue:TimeSeries";
458 prv.PropertyReference = ifcTimeSeries;
459 });
460
461 var ifcAddress = model.Instances.New<IfcPostalAddress>(a =>
462 {
463 a.InternalLocation = "Room 101";
464 a.AddressLines.AddRange(new[] { new IfcLabel("12 New road"), new IfcLabel("DoxField") });
465 a.Town = "Sunderland";
466 a.PostalCode = "DL01 6SX";
467 });
468 var ifcPrValueAddress = model.Instances.New<IfcPropertyReferenceValue>(prv =>
469 {
470 prv.Name = "IfcPropertyReferenceValue:Address";
471 prv.PropertyReference = ifcAddress;
472 });
473 var ifcTelecomAddress = model.Instances.New<IfcTelecomAddress>(a =>
474 {
475 a.TelephoneNumbers.Add(new IfcLabel("01325 6589965"));
476 a.ElectronicMailAddresses.Add(new IfcLabel("bob@bobsworks.com"));
477 });
478 var ifcPrValueTelecom = model.Instances.New<IfcPropertyReferenceValue>(prv =>
479 {
480 prv.Name = "IfcPropertyReferenceValue:Telecom";
481 prv.PropertyReference = ifcTelecomAddress;
482 });
483
484 // ifcelementQuantity 创建模型元素数量
485 var ifcPropertySet = model.Instances.New<IfcPropertySet>(ps =>
486 {
487 ps.Name = "Test:IfcPropertySet";
488 ps.Description = "Property Set";
489 ps.HasProperties.Add(ifcPropertySingleValue);
490 ps.HasProperties.Add(ifcPropertyEnumeratedValue);
491 ps.HasProperties.Add(ifcPropertyBoundedValue);
492 ps.HasProperties.Add(ifcPropertyTableValue);
493 ps.HasProperties.Add(ifcPropertyListValue);
494 ps.HasProperties.Add(ifcPrValueMaterial);
495 ps.HasProperties.Add(ifcPrValueMatLayer);
496 ps.HasProperties.Add(ifcPrValueRef);
497 ps.HasProperties.Add(ifcPrValueTimeSeries);
498 ps.HasProperties.Add(ifcPrValueAddress);
499 ps.HasProperties.Add(ifcPrValueTelecom);
500 });
501
502 // 需要建立关系
503 model.Instances.New<IfcRelDefinesByProperties>(rdbp =>
504 {
505 rdbp.Name = "Property Association";
506 rdbp.Description = "IfcPropertySet associated to wall";
507 rdbp.RelatedObjects.Add(wall);
508 rdbp.RelatingPropertyDefinition = ifcPropertySet;
509 });
510 }
511
512 private static void CreateElementQuantity(IfcStore model, IfcWallStandardCase wall)
513 {
514 // 创建模型元素数量
515 // 首先我们需模型简单物理量，首先将使用模型量长度
516 var ifcQuantityArea = model.Instances.New<IfcQuantityLength>(qa =>
517 {
518 qa.Name = "IfcQuantityArea:Area";
519 qa.Description = "";
520 qa.Unit = model.Instances.New<IfcSIUnit>(siu =>
521 {
522 siu.UnitType = IfcUnitEnum.LENGTHUNIT;
523 siu.Prefix = IfcSIPrefix.MILLI;
524 siu.Name = IfcSIUnitName.METRE;
525 });
526 qa.LengthValue = 100.0;
527
528 });
529
530 // 然后，上下文相关单元的数量计数
531 var ifcContextDependentUnit = model.Instances.New<IfcContextDependentUnit>(cd =>
532 {
533 cd.Dimensions = model.Instances.New<IfcDimensionalExponents>(de =>
534 {
535 de.LengthExponent = 1;
536 de.MassExponent = 0;
537 de.TimeExponent = 0;
538 de.ElectricCurrentExponent = 0;
539 de.ThermodynamicTemperatureExponent = 0;
540 de.AmountOfSubstanceExponent = 0;
541 de.LuminousIntensityExponent = 0;
542 });
543 cd.UnitType = IfcUnitEnum.LENGTHUNIT;
544 cd.Name = "Elephants";
545 });
546 var ifcQuantityCount = model.Instances.New<IfcQuantityCount>(qc =>
547 {
548 qc.Name = "IfcQuantityCount:Elephant";
549 qc.CountValue = 12;
550 qc.Unit = ifcContextDependentUnit;
551 });
552
553
554 // 使用转换单位
555 var ifcConversionBasedUnit = model.Instances.New<IfcConversionBasedUnit>(cbu =>
556 {
557 cbu.ConversionFactor = model.Instances.New<IfcMeasureWithUnit>(mu =>
558 {
559 mu.ValueComponent = new IfcRatioMeasure(25.4);
560 mu.UnitComponent = model.Instances.New<IfcSIUnit>(siu =>
561 {
562 siu.UnitType = IfcUnitEnum.LENGTHUNIT;
563 siu.Prefix = IfcSIPrefix.MILLI;
564 siu.Name = IfcSIUnitName.METRE;
565 });
566
567 });
568 cbu.Dimensions = model.Instances.New<IfcDimensionalExponents>(de =>
569 {
570 de.LengthExponent = 1;
571 de.MassExponent = 0;
572 de.TimeExponent = 0;
573 de.ElectricCurrentExponent = 0;
574 de.ThermodynamicTemperatureExponent = 0;
575 de.AmountOfSubstanceExponent = 0;
576 de.LuminousIntensityExponent = 0;
577 });
578 cbu.UnitType = IfcUnitEnum.LENGTHUNIT;
579 cbu.Name = "Inch";
580 });
581 var ifcQuantityLength = model.Instances.New<IfcQuantityLength>(qa =>
582 {
583 qa.Name = "IfcQuantityLength:Length";
584 qa.Description = "";
585 qa.Unit = ifcConversionBasedUnit;
586 qa.LengthValue = 24.0;
587 });
588
589 // 创建 IfcElementQuantity
590 var ifcElementQuantity = model.Instances.New<IfcElementQuantity>(eq =>
591 {
592 eq.Name = "Test:IfcElementQuantity";
593 eq.Description = "Measurement quantity";
594 eq.Quantities.Add(ifcQuantityArea);
595 eq.Quantities.Add(ifcQuantityCount);
596 eq.Quantities.Add(ifcQuantityLength);
597 });
598
599 // 创建关系
600 model.Instances.New<IfcRelDefinesByProperties>(rdbp =>
601 {
602 rdbp.Name = "Area Association";
603 rdbp.Description = "IfcElementQuantity associated to wall";
604 rdbp.RelatedObjects.Add(wall);
605 rdbp.RelatingPropertyDefinition = ifcElementQuantity;
606 });
607 }
608 }
609 }生成的IFC文件可以在您选择的查看器中打开：
ISO-10303-21;
HEADER;
FILE_DESCRIPTION ((''), '2;1');
FILE_NAME ('', '2016-10-31T10:18:08', (''), (''), 'Xbim File Processor version 4.0.0.0', 'Xbim version 4.0.0.0', '');
FILE_SCHEMA (('IFC4'));
ENDSEC;
DATA;
#1=IFCPROJECT('2MSHGQD897wuyjYHKVxtyf',#2,'HelloWall',$,$,$,$,(#20,#23),#8);
#2=IFCOWNERHISTORY(#5,#6,$,.ADDED.,$,$,$,0);
#3=IFCPERSON($,'Team','xBIM',$,$,$,$,$);
#4=IFCORGANIZATION($,'xBimTeam',$,$,$);
#5=IFCPERSONANDORGANIZATION(#3,#4,$);
#7=IFCORGANIZATION($,'xBimTeam',$,$,$);
#6=IFCAPPLICATION(#7,'1.0','Hello Wall Application','HelloWall.exe');
#8=IFCUNITASSIGNMENT((#9,#10,#11,#12,#13,#14,#15,#16,#17));
#9=IFCSIUNIT(*,.LENGTHUNIT.,.MILLI.,.METRE.);
#10=IFCSIUNIT(*,.AREAUNIT.,$,.SQUARE_METRE.);
#11=IFCSIUNIT(*,.VOLUMEUNIT.,$,.CUBIC_METRE.);
#12=IFCSIUNIT(*,.SOLIDANGLEUNIT.,$,.STERADIAN.);
#13=IFCSIUNIT(*,.PLANEANGLEUNIT.,$,.RADIAN.);
#14=IFCSIUNIT(*,.MASSUNIT.,$,.GRAM.);
#15=IFCSIUNIT(*,.TIMEUNIT.,$,.SECOND.);
#16=IFCSIUNIT(*,.THERMODYNAMICTEMPERATUREUNIT.,$,.DEGREE_CELSIUS.);
#17=IFCSIUNIT(*,.LUMINOUSINTENSITYUNIT.,$,.LUMEN.);
#18=IFCCARTESIANPOINT((0.,0.,0.));
#19=IFCAXIS2PLACEMENT3D(#18,$,$);
#20=IFCGEOMETRICREPRESENTATIONCONTEXT('Building Model','Model',3,1.E-05,#19,$);
#21=IFCCARTESIANPOINT((0.,0.));
#22=IFCAXIS2PLACEMENT2D(#21,$);
#23=IFCGEOMETRICREPRESENTATIONCONTEXT('Building Plan View','Plan',2,1.E-05,#22,$);
#24=IFCBUILDING('0jQ$yvAIv6URCwLuvWnAo0',#2,'Default Building',$,$,#25,$,$,.ELEMENT.,$,$,$);
#25=IFCLOCALPLACEMENT($,#26);
#26=IFCAXIS2PLACEMENT3D(#27,$,$);
#27=IFCCARTESIANPOINT((0.,0.,0.));
#28=IFCRELAGGREGATES('3Qs6TKkPjASQ1ctGzUSQ7F',#2,$,$,#1,(#24));
#29=IFCWALLSTANDARDCASE('3NBPkknun6EuV9fpeE6rFh',#2,'A Standard rectangular wall',$,$,#39,#38,$,$);
#30=IFCRECTANGLEPROFILEDEF(.AREA.,$,#32,300.,4000.);
#31=IFCCARTESIANPOINT((0.,400.));
#32=IFCAXIS2PLACEMENT2D(#31,$);
#33=IFCEXTRUDEDAREASOLID(#30,#36,#34,2400.);
#34=IFCDIRECTION((0.,0.,1.));
#35=IFCCARTESIANPOINT((0.,0.,0.));
#36=IFCAXIS2PLACEMENT3D(#35,$,$);
#37=IFCSHAPEREPRESENTATION(#20,'Body','SweptSolid',(#33));
#38=IFCPRODUCTDEFINITIONSHAPE($,$,(#37,#52));
#39=IFCLOCALPLACEMENT($,#40);
#40=IFCAXIS2PLACEMENT3D(#35,#42,#41);
#41=IFCDIRECTION((0.,1.,0.));
#42=IFCDIRECTION((0.,0.,1.));
#43=IFCMATERIALLAYERSETUSAGE(#44,.AXIS2.,.NEGATIVE.,150.,$);
#44=IFCMATERIALLAYERSET((#45),$,$);
#45=IFCMATERIALLAYER($,10.,$,$,$,$,$);
#46=IFCMATERIAL('some material',$,$);
#47=IFCRELASSOCIATESMATERIAL('0is_vsqtn9ouErH3XVg3O8',#2,$,$,(#29),#43);
#48=IFCPRESENTATIONLAYERASSIGNMENT('some ifcPresentationLayerAssignment',$,(#37),$);
#49=IFCPOLYLINE((#50,#51));
#50=IFCCARTESIANPOINT((0.,0.));
#51=IFCCARTESIANPOINT((4000.,0.));
#52=IFCSHAPEREPRESENTATION(#20,'Axis','Curve2D',(#49));
#54=IFCSIUNIT(*,.LENGTHUNIT.,.MILLI.,.METRE.);
#53=IFCQUANTITYLENGTH('IfcQuantityArea:Area','',#54,100.,$);
#56=IFCDIMENSIONALEXPONENTS(1,0,0,0,0,0,0);
#55=IFCCONTEXTDEPENDENTUNIT(#56,.LENGTHUNIT.,'Elephants');
#57=IFCQUANTITYCOUNT('IfcQuantityCount:Elephant',$,#55,12.,$);
#60=IFCSIUNIT(*,.LENGTHUNIT.,.MILLI.,.METRE.);
#59=IFCMEASUREWITHUNIT(IFCRATIOMEASURE(25.4),#60);
#61=IFCDIMENSIONALEXPONENTS(1,0,0,0,0,0,0);
#58=IFCCONVERSIONBASEDUNIT(#61,.LENGTHUNIT.,'Inch',#59);
#62=IFCQUANTITYLENGTH('IfcQuantityLength:Length','',#58,24.,$);
#63=IFCELEMENTQUANTITY('2NzDD6BkfDFAUH5zVe3vf0',#2,'Test:IfcElementQuantity','Measurement quantity',$,(#53,#57,#62));
#64=IFCRELDEFINESBYPROPERTIES('2rxEDLnp59XvLpgGjoNnBQ',#2,'Area Association','IfcElementQuantity associated to wall',(#29),#63);
#66=IFCSIUNIT(*,.TIMEUNIT.,$,.SECOND.);
#65=IFCPROPERTYSINGLEVALUE('IfcPropertySingleValue:Time','',IFCTIMEMEASURE(150.),#66);
#68=IFCPROPERTYENUMERATION('Notes',(IFCLABEL('Do'),IFCLABEL('Re'),IFCLABEL('Mi'),IFCLABEL('Fa'),IFCLABEL('So'),IFCLABEL('La'),IFCLABEL('Ti')),$);
#67=IFCPROPERTYENUMERATEDVALUE('IfcPropertyEnumeratedValue:Music',$,(IFCLABEL('Do'),IFCLABEL('Re'),IFCLABEL('Mi')),#68);
#70=IFCSIUNIT(*,.MASSUNIT.,.KILO.,.GRAM.);
#69=IFCPROPERTYBOUNDEDVALUE('IfcPropertyBoundedValue:Mass','',IFCMASSMEASURE(5000.),IFCMASSMEASURE(1000.),#70,$);
#73=IFCDIMENSIONALEXPONENTS(0,0,0,0,0,0,0);
#72=IFCCONTEXTDEPENDENTUNIT(#73,.FREQUENCYUNIT.,'dB');
#71=IFCPROPERTYTABLEVALUE('IfcPropertyTableValue:Sound',$,(IFCREAL(100.),IFCREAL(200.),IFCREAL(400.),IFCREAL(800.),IFCREAL(1600.),IFCREAL(3200.)),(IFCREAL(20.),IFCREAL(42.),IFCREAL(46.),IFCREAL(56.),IFCREAL(60.),IFCREAL(65.)),$,$,#72,$);
#74=IFCPROPERTYLISTVALUE('IfcPropertyListValue:Colours',$,(IFCLABEL('Red'),IFCLABEL('Green'),IFCLABEL('Blue'),IFCLABEL('Pink'),IFCLABEL('White'),IFCLABEL('Black')),$);
#75=IFCMATERIAL('Brick',$,$);
#76=IFCPROPERTYREFERENCEVALUE('IfcPropertyReferenceValue:Material',$,$,#75);
#78=IFCMATERIAL('Cavity',$,$);
#79=IFCMATERIAL('Block',$,$);
#77=IFCMATERIALLIST((#75,#78,#79));
#80=IFCMATERIALLAYER(#75,100.,$,$,$,$,$);
#81=IFCPROPERTYREFERENCEVALUE('IfcPropertyReferenceValue:MaterialLayer',$,$,#80);
#82=IFCDOCUMENTREFERENCE('c://Documents//TheDoc.Txt',$,'Document',$,$);
#83=IFCPROPERTYREFERENCEVALUE('IfcPropertyReferenceValue:Document',$,$,#82);
#84=IFCREGULARTIMESERIES('Regular Time Series','Time series of events','2015-02-14T12:01:01','2015-05-15T12:01:01',.CONTINUOUS.,.MEASURED.,$,$,604800.,());
#85=IFCPROPERTYREFERENCEVALUE('IfcPropertyReferenceValue:TimeSeries',$,$,#84);
#86=IFCPOSTALADDRESS($,$,$,'Room 101',('12 New road','DoxField'),$,'Sunderland',$,'DL01 6SX',$);
#87=IFCPROPERTYREFERENCEVALUE('IfcPropertyReferenceValue:Address',$,$,#86);
#88=IFCTELECOMADDRESS($,$,$,('01325 6589965'),$,$,('bob@bobsworks.com'),$,$);
#89=IFCPROPERTYREFERENCEVALUE('IfcPropertyReferenceValue:Telecom',$,$,#88);
#90=IFCPROPERTYSET('2qJSTdQSj0wQKmIdFVroG2',#2,'Test:IfcPropertySet','Property Set',(#65,#67,#69,#71,#74,#76,#81,#83,#85,#87,#89));
#91=IFCRELDEFINESBYPROPERTIES('3n83nuxoj0gA5F$UnucPP3',#2,'Property Association','IfcPropertySet associated to wall',(#29),#90);
#92=IFCRELCONTAINEDINSPATIALSTRUCTURE('1mefbELBn5JQeF1AH4vA0$',#2,$,$,(#29),#24);
ENDSEC;
END-ISO-10303-21;本文参与 腾讯云自媒体同步曝光计划，分享自作者个人站点/博客。
原始发表：2019-05-31 ，如有侵权请联系 cloudcommunity@tencent.com 删除
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