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1. using System;
2. using System.Collections.Generic;
3. using System.Linq;
4. using WinForms = System.Windows.Forms;
5. using Autodesk.Revit;
6. using Autodesk.Revit.DB;
7. using Autodesk.Revit.UI;
8. using Autodesk.Revit.ApplicationServices;
9. using Autodesk.Revit.Attributes;
10. namespace chengtai
11. {
12. [Transaction(TransactionMode.Manual)]
13. [Regeneration(RegenerationOption.Manual)]
14. class chengtai:IExternalCommand
15. {
16. UIApplication rvtApp;
17. Document rvtDoc;
18. public Result Execute(ExternalCommandData commandData, ref string message, ElementSet element)
19. {
20. rvtApp = commandData.Application ;
21. rvtDoc = commandData.Application.ActiveUIDocument.Document;
22. //ºËʵ
23. if (!isRightTemplate(BuiltInCategory.OST_StructuralFoundation))
24. {
25. TaskDialog .Show ("Family API","Please open foundation.rft");
26. return Result.Failed ;
27. }
28. //£¨1.1£©Ð½¨²Î¿¼Ãæ
29. addReferencePlanes();
30. //(1.2)´´½¨À­ÉìÌå
31. Extrusion psolid = createSolid();
32. return Result.Succeeded ;
33. }
34. bool isRightTemplate(BuiltInCategory targetCategory)
35. {
36. if (!rvtDoc .IsFamilyDocument )
37. {
38. TaskDialog .Show ("Family API","This command works only in the family editor.");
39. return false ;
40. }
41. Family ownerFamily = rvtDoc .OwnerFamily ;
42. if (ownerFamily == null )
43. {
44. TaskDialog .Show ("Family API","This document does not have Owner Family.");
45. return false ;
46. }
47. Category cat = rvtDoc .Settings .Categories .get_Item (BuiltInCategory.OST_StructuralFoundation);
48. if (!cat .Id .Equals (ownerFamily .FamilyCategory .Id ))
49. {
50. TaskDialog .Show ("Family API","The category of this document does not match the context of this command. Please open foundation.rft");
51. return false ;
52. }
53. return true ;
54. }
55. void addReferencePlanes()
56. {
57. //add horizonal ref plane
58. ReferencePlane refFront = findElement(typeof(ReferencePlane), "Front") as ReferencePlane;
59. XYZ p1 = refFront.BubbleEnd;
60. XYZ p2 = refFront.FreeEnd;
61. XYZ pBubbleEnd = new XYZ(p1.X, p1.Y + mmToFeet(1900.0), p1.Z);
62. XYZ pFreeEnd = new XYZ(p1.X, p1.Y + mmToFeet(1900.0), p1.Z);
63. XYZ vec = XYZ.BasisZ;
64. View pViewPlan = findElement(typeof(ViewPlan), "Lower Ref. Level") as View;
65. ReferencePlane refPlane = rvtDoc.FamilyCreate.NewReferencePlane(pBubbleEnd, pFreeEnd, vec, pViewPlan);
66. refPlane.Name = "OffsetBack";
67. pBubbleEnd = new XYZ(p1.X, p1.Y - mmToFeet(1900.0), p1.Z);
68. pFreeEnd = new XYZ(p1.X, p1.Y - mmToFeet(1900.0), p1.Z);
69. refPlane = rvtDoc.FamilyCreate.NewReferencePlane(pBubbleEnd, pFreeEnd, vec, pViewPlan);
70. refPlane.Name = "OffsetFront";
71. //add vertical ref plane
72. ReferencePlane refLeft = findElement(typeof(ReferencePlane), "Left") as ReferencePlane;
73. p1 = refLeft.BubbleEnd;
74. p2 = refLeft.FreeEnd;
75. pBubbleEnd = new XYZ(p1.X + mmToFeet (1900.0), p1.Y, p1.Z);
76. pFreeEnd = new XYZ(p1.X + mmToFeet(1900.0), p1.Y, p1.Z);
77. refPlane = rvtDoc.FamilyCreate.NewReferencePlane(pBubbleEnd, pFreeEnd, vec, pViewPlan);
78. refPlane.Name = "OffsetRight";
79. pBubbleEnd = new XYZ(p1.X - mmToFeet(1900.0), p1.Y, p1.Z);
80. pFreeEnd = new XYZ(p1.X - mmToFeet(1900.0), p1.Y, p1.Z);
81. refPlane = rvtDoc.FamilyCreate.NewReferencePlane(pBubbleEnd, pFreeEnd, vec, pViewPlan);
82. refPlane.Name = "OffsetLeft";
83. }
84. Extrusion createSolid()
85. {
86. //1. define a profile
87. CurveArrArray pProfile = createProfile();
88. //2. create a sketch plane
89. ReferencePlane pRefPlane = findElement(typeof(ReferencePlane), "ReferencePlane") as ReferencePlane;
90. SketchPlane pSketchPlane = rvtDoc.FamilyCreate.NewSketchPlane(pRefPlane.Plane);
91. //3. height of the extrution
92. double dHeight = mmToFeet(900.0);
93. //4. create an extrusion here.at this point,just an box,nothing else.
94. bool bIsSolid = true;
95. return rvtDoc.FamilyCreate.NewExtrusion(bIsSolid, pProfile, pSketchPlane, dHeight);
96. }
97. CurveArrArray createProfile()
98. {
99. double w = mmToFeet(3800.0);
100. double d = mmToFeet(3800.0);
101. const int nVerts = 4;
102. XYZ[] pts = new XYZ[] {
103. new XYZ (-w /2.0, -d /2.0, 0.0),
104. new XYZ (w /2.0, -d /2.0, 0.0),
105. new XYZ (w /2.0, d /2.0, 0.0),
106. new XYZ (-w /2.0, d /2.0, 0.0),
107. new XYZ (-w /2.0, -d /2.0, 0.0)};
108. //define a loop
109. CurveArray pLoop = rvtApp.Application.Create.NewCurveArray();
110. for (int i = 0; i < nVerts; ++i)
111. {
112. Line line = rvtApp.Application.Create.NewLineBound(pts[i], pts[i + 1]);
113. pLoop.Append(line);
114. }
115. //put the loop in the curveArrArray as a profile
116. CurveArrArray pProfile = rvtApp.Application.Create.NewCurveArrArray();
117. pProfile.Append(pLoop);
118. return pProfile;
119. }
122. //helper function: find an element of the given type and the name.
123. Element findElement(Type targetType, string targetName)
124. {
125. FilteredElementCollector collector = new FilteredElementCollector(rvtDoc);
126. collector.WherePasses(new ElementClassFilter(targetType));
127. var targetElems = from element in collector where element.Name.Equals(targetName) select element;
128. List<Element> elems = targetElems.ToList<Element>();
129. if (elems.Count > 0)
130. {
131. return elems[0];
132. }
133. return null;
134. }
135. //helper function: convert millimeter to feet
136. double mmToFeet(double mmVal)
137. {
138. return mmVal / 304.8;
139. }
140. }
141. }

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