1. Ideas
1) Create a family of wall-based metric regular models in Revit
2) Add instance parameters to the family
I only added the diameter parameter here.
3) Load the family into the project
4) Create a family instance
5) Modify the diameter parameter
Two, the code
public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
{
try {
UIDocument uiDoc = commandData.Application.ActiveUIDocument;
Document doc = uiDoc.Document;
Selection sel = uiDoc.Selection;
Autodesk.Revit.Creation.Application acreation = commandData.Application.Application.Create;
var creation = doc.Create;
Transaction ts = new Transaction(doc, "loadrfa");
ts.Start();
var rfaname = "空心圆";//族类型的名字
FamilySymbol circle = LoadRfa(doc, rfaname);
XYZ p0 = new XYZ(30, 0, 0);
XYZ p1 = new XYZ(30, 10, 0);
XYZ p3 = new XYZ(30, 0, 50);
XYZ p2 = new XYZ(30, 10, 50);
Curve l1 = Line.CreateBound(p0, p1);
Curve l2 = Line.CreateBound(p1, p2);
Curve l3 = Line.CreateBound(p2, p3);
Curve l4 = Line.CreateBound(p3, p0);
var profile = new List<Curve>();
profile.Add(l1);
profile.Add(l2);
profile.Add(l3);
profile.Add(l4);
var wall = Wall.Create(doc, profile, true);
XYZ insertP = new XYZ(30, 5, 25);//插入的中心点
int d = 1000;//直径
Level lv = Level.Create(doc, 0);
CreateCirleHole(doc, insertP, d, lv, wall, circle, "2020");
ts.Commit();
return Result.Succeeded;
} catch (Exception ex) {
var r = 0;
return Result.Succeeded;
}
}
private FamilySymbol LoadRfa(Document doc, string rfaname)
{
FamilySymbol familySymbol = null;
var isLoad = CheckLoadRfa(doc, rfaname, out familySymbol);
if (!isLoad) {
string familyPath = @"C:\Users\xxx\Desktop\空心圆族.rfa";
Family family = null;
bool flag = doc.LoadFamily(familyPath, out family);
if (!flag) {
return null;
} else {
foreach (ElementId s in family.GetFamilySymbolIds()) {
familySymbol = doc.GetElement(s) as FamilySymbol;
if (!familySymbol.IsActive)
familySymbol.Activate();
break;
}
}
}
return familySymbol;
}
private bool CheckLoadRfa(Document RevitDoc, string rfaName, out FamilySymbol familySymbol)
{
FamilySymbol type = null;
ElementFilter categoryFilter = new ElementCategoryFilter(BuiltInCategory.OST_GenericModel);
ElementFilter familySymbolFilter = new ElementClassFilter(typeof(FamilySymbol));
LogicalAndFilter andFilter = new LogicalAndFilter(categoryFilter, familySymbolFilter);
FilteredElementCollector symbols = new FilteredElementCollector(RevitDoc);
symbols = symbols.WherePasses(andFilter);
bool symbolFound = false;
foreach (FamilySymbol element in symbols) {
if (element.Name == rfaName) {
symbolFound = true;
type = element;
break;
}
}
familySymbol = type;
return symbolFound;
}
//创建族实例，并修改直径参数
public FamilyInstance CreateCirleHole(Document doc, XYZ insertPt, int d, Level level, Wall wall, FamilySymbol circle)
{
try {
FamilyInstance airhole = doc.Create.NewFamilyInstance(insertPt, circle, wall, level, Autodesk.Revit.DB.Structure.StructuralType.NonStructural);
var paramD = airhole.LookupParameter("空心圆直径");
paramD.Set(ConvertToDecimalFeet(d));
return airhole;
} catch (Exception ex) {
return null;
}
}