revit二次开发材质相关_liunianwangshui的博客-程序员宅基地 - 程序员宅基地 (cxyzjd.com)

Revit API: 材质- 参考官方文档（一）_极客BIM工作室-CSDN博客

Revit API: 材质- 参考官方文档（二）_极客BIM工作室-CSDN博客

有一个需求，需要修改构件颜色，本来以为挺简单的，只要新建一个Material，改一下Material属性下面的颜色就行了，结果发现毫无效果，经过多方探查之后才发现只有修改Material=>AppearanceAssetElement=>GetRenderingAsset=>AssetProperty=>AssetPropertyDoubleArray4d的generic_diffuse属性(也可能是别的属性)值才行

官网已经提供了修改颜色的方法，但AppearanceAssetElement还是需要自己创建，（地址我忘了）

public static void UpdateAssetColor(this Document doc, AppearanceAssetElement assetElem, Color color)
{
  using (Transaction t = new Transaction(doc, "Change material color"))
  {
    t.Start();
    using (AppearanceAssetEditScope editScope = new AppearanceAssetEditScope(doc))
    {
      Asset editableAsset = editScope.Start(assetElem.Id);
      // returns an editable copy of the appearance asset
      // unlike AppearanceAssetElement.GetRenderingAsset(), the edit scope
      // sets up the asset for editing using the classes and utilities from
      // MaterialsManager.  The scope can keep a mapping from asset to Protein
      // class members that are obtained from the asset, to permit use of
      // Protein validation.  If the Asset was not obtained from an edit scope,
      // the setter operations for asset properties must throw.
      // Try to change values
      AssetPropertyDoubleArray4d genericDiffuseProperty = editableAsset.FindByName("generic_diffuse") as AssetPropertyDoubleArray4d;
      // 4 length double asset properties often represent colors.
      genericDiffuseProperty.SetValueAsColor(color);
      // Shortcut methods should be added to work directly with Color objects
      // for these types.
      // Commit the entire edit scope.  If the appearance asset element is
      // used in one or more materials, they will be updated to match any changes made.
      editScope.Commit(true);
    }
    t.Commit();
  }
}

添加材质步骤：

新建Material
新建AppearanceAssetElement
设置颜色

源码

方法

/// <summary>
/// 添加新材料（无事务）
/// </summary>
/// <param name="doc"></param>
public static ElementId AddNewMaterial(this Document doc, string name)
{
  IList<Element> elements = doc.GetElementByType(typeof(Material));

  Material a = (from i in elements
                where i.Name == name
                select i as Material).FirstOrDefault();
  if (a != null) { return a.Id; }
  else
  {
    ElementId id = Material.Create(doc, name);
    return id;
  }
}
/// <summary>
/// 添加AppearanceAssetElement (带条件)
/// </summary>
/// <param name="doc"></param>
/// <param name="name"></param>
/// <param name="generic_diffuse">Asset属性</param>
/// <returns></returns>
public static ElementId AddNewAppearanceAsset(this Document doc, string name, string generic_diffuse)
{
  AppearanceAssetElement a = (from i in doc.GetAppearanceAsset()
                              where i.Name == name
                              select i as AppearanceAssetElement).FirstOrDefault();
  if (a != null)
  {
    return a.Id;
  }
  else
  {
    List<Asset> assets = doc.GetAsset();
    foreach (Asset asset in assets)
    {
    // 确保Asset有对应属性
      AssetProperty assetProperty = asset.FindByName(generic_diffuse);
      if (assetProperty != null)
      {
        AppearanceAssetElement assetElement = AppearanceAssetElement.Create(doc, name, asset);
        return assetElement.Id;
      }
    }
    return new ElementId(-1);
  }
}
/// <summary>
/// 修改单个颜色
/// </summary>
/// <param name="doc"></param>
/// <param name="assetElemId">AppearanceAssetElement的Id</param>
/// <param name="color"></param>
public static void UpdateAssetColor(this Document doc, ElementId assetElemId, Color color)
{
  using (AppearanceAssetEditScope editScope = new AppearanceAssetEditScope(doc))
  {
    Asset editableAsset = editScope.Start(assetElemId);
    AssetPropertyDoubleArray4d genericDiffuseProperty = editableAsset.FindByName("generic_diffuse") as AssetPropertyDoubleArray4d;
    genericDiffuseProperty.SetValueAsColor(color);
    editScope.Commit(true);
  }
}

启动


[Autodesk.Revit.Attributes.Transaction(Autodesk.Revit.Attributes.TransactionMode.Manual)]
[Autodesk.Revit.Attributes.Regeneration(Autodesk.Revit.Attributes.RegenerationOption.Manual)]
[Autodesk.Revit.Attributes.Journaling(Autodesk.Revit.Attributes.JournalingMode.NoCommandData)]
public class ShowRemarkCommandTest : IExternalCommand
{
  public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
  {
    UIDocument uiDoc = commandData.Application.ActiveUIDocument;
    Document doc = uiDoc.Document;
    using (Transaction tran = new Transaction(doc, "Start"))
    {
      tran.Start();
      Reference refer = uiDoc.Selection.PickObject(Autodesk.Revit.UI.Selection.ObjectType.Element, "选择构件");
      // 获取实例
      FamilyInstance element = doc.GetElement(refer) as FamilyInstance;
      // 添加材质（自定义方法）
      ElementId materialId = doc.AddNewMaterial("测试材质");
      // 添加外观材质（自定义方法）
      ElementId appearanceId = doc.AddNewAppearanceAsset("测试外观", "generic_diffuse");
      // 修改颜色（自定义方法）
      doc.UpdateAssetColor(appearanceId, new Color(121, 121, 211));

      Material material = doc.GetElement(materialId) as Material;
      material.AppearanceAssetId = appearanceId;
      element.StructuralMaterialId = materialId;
      tran.Commit();
    }
    return Result.Succeeded;
  }
}

注意事项

修改颜色时一次只能添加一种颜色，批量添加时，editScope.Commit(true)执行完毕后才能继续修改颜色
该方法在2021Revit(.net framework4.8)版本上可以使用时，在2018版本无法使用

Revit 添加材质

添加材质步骤：

源码

方法

启动

注意事项