VectorDraw Developer Framework（VDF）是一個(gè)用于應(yīng)用程序可視化的圖形引擎庫(kù)。有了VDF提供的功能，您可以輕松地創(chuàng)建、編輯、管理、輸出、輸入和打印2D和3D圖形文件。該庫(kù)還支持許多矢量和柵格輸入和輸出格式，包括本地PDF和SVG導(dǎo)出。

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問：如何將IFC文檔分解為原始vdFigures？

答：下面的代碼將使所有ifc實(shí)體的Deleted = true，而將添加繪制這些ifc產(chǎn)品的vdFigure對(duì)象。

vdSelection set = new vdSelection(); set.SetUnRegisterDocument(doc);
set.Select(RenderSelect.SelectingMode.All, null);
                
for (int i = 0; i < set.Count; i++)
{
    vdFigure fig = set[i];
    if (fig is vdIFCDocument)
    {
         fig.Deleted = true;
         vdEntities ents = ((vdIFCDocument)fig).Explode();
         for (int k = 0; k < ents.Count; k++)
         {
                vdIFCProduct ifcproduct = ents[k] as vdIFCProduct;
                if (ifcproduct != null)
                {
                      ifcproduct.Deleted = true;
                      vdEntities ents2 = ifcproduct.Explode();
                      for (int k2 = 0; k2 < ents2.Count; k2++)
                      {
                            if (ents2[k2] is vdSectionPath || ents2[k2] is vdSectionRevolved)
                            {
                                 vdEntities ents3 = ents2[k2].Explode();
                                 foreach (vdFigure item in ents3)doc.Model.Entities.AddItem(item);
                            }
                            else
                           {
                                  doc.Model.Entities.AddItem(ents2[k2]);
                           }
                      }
                }
          else
          {
               doc.Model.Entities.AddItem(ents[k]);
          }
       }
   }
}
doc.Redraw(true);

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