添加项目文件。

Mstn.Toolkit/Extensions/CurveProcessor.cs

@@ -0,0 +1,53 @@
+using System.Collections.Generic;
+
+using Bentley.DgnPlatformNET;
+using Bentley.DgnPlatformNET.Elements;
+using Bentley.GeometryNET;
+
+namespace Mstn.Toolkit.Extensions
+{
+    public class CurveProcessor : ElementGraphicsProcessor
+    {
+        private IList<CurveVector> m_outputCurve;
+        private DTransform3d m_currentTransform;
+        public CurveProcessor(ref IList<CurveVector> outputCurve)
+        {
+            m_outputCurve = outputCurve;
+            m_currentTransform = DTransform3d.Identity;
+        }
+
+        public override bool ProcessAsBody(bool isCurved)
+        {
+            return false;
+        }
+
+        public override bool ProcessAsFacets(bool isPolyface)
+        {
+            return false;
+        }
+
+        public override BentleyStatus ProcessCurveVector(CurveVector curves, bool isFilled = false)
+        {
+            CurveVector cvs = curves.Clone();
+            cvs.Transform(m_currentTransform);
+            m_outputCurve.Add(cvs);
+            return BentleyStatus.Success;
+        }
+
+        public void Process(Element element)
+        {
+            ElementGraphicsOutput.Process(element, this);
+        }
+
+        public override void AnnounceTransform(DTransform3d transform)
+        {
+            m_currentTransform = transform != null ? transform : DTransform3d.Identity;
+
+        }
+
+        public override void AnnounceIdentityTransform()
+        {
+            m_currentTransform = DTransform3d.Identity;
+        }
+    }
+}