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如何在Revit API中检索嵌套族实例

revit-api

1

tdykstra · 技术社区 · 9 年前

我正在使用FilteredElementCollector检索族实例:

    var collector = new FilteredElementCollector(doc, doc.ActiveView.Id);
    var familyInstances = collector.OfClass(typeof(FamilyInstance));

这对于没有嵌套族实例的族很有用。但是,如果我在项目中有族A的实例,而族A本身包含族B的实例,则此代码无法获取族B的示例。如何获取族B实例?

我是Revit API的新手,似乎必须有一个简单的解决方案,但我在网上找不到。我正在使用Revit 2015,如果这会有所不同的话。

2 回复 | 直到 9 年前

1

6

alital AlexPera 9 年前

familyInstance将具有活动视图中所有族的列表(包括嵌套族和非嵌套族)。

您需要做的是遍历每个FamilyInstance,看看它是否已经是根族(即包含嵌套族)或嵌套族或没有。类似于:

            var collector = new FilteredElementCollector(doc, doc.ActiveView.Id);
            var familyInstances = collector.OfClass(typeof(FamilyInstance));
            foreach (var anElem in familyInstances)
            {
                if (anElem is FamilyInstance)
                {
                    FamilyInstance aFamilyInst = anElem as FamilyInstance;
                    // we need to skip nested family instances 
                    // since we already get them as per below
                    if (aFamilyInst.SuperComponent == null)
                    {
                        // this is a family that is a root family
                        // ie might have nested families 
                        // but is not a nested one
                        var subElements = aFamilyInst.GetSubComponentIds();
                        if (subElements.Count == 0)
                        {
                            // no nested families
                            System.Diagnostics.Debug.WriteLine(aFamilyInst.Name + " has no nested families");
                        }
                        else
                        {
                            // has nested families
                            foreach (var aSubElemId in subElements)
                            {
                                var aSubElem = doc.GetElement(aSubElemId);
                                if (aSubElem is FamilyInstance)
                                {
                                    System.Diagnostics.Debug.WriteLine(aSubElem.Name + " is a nested family of " + aFamilyInst.Name);
                                }
                            }
                        }
                    }
                }
            }

2

4

Magson Leone 9 年前

我经常与Linq一起工作,以留下更简洁的代码。请参见以下示例:

List<Element> listFamilyInstances = new FilteredElementCollector(doc, doc.ActiveView.Id)
            .OfClass(typeof(FamilyInstance))
            .Cast<FamilyInstance>()
            .Where(a => a.SuperComponent == null)
            .SelectMany(a => a.GetSubComponentIds())
            .Select(a => doc.GetElement(a))
            .ToList();