我一直在玩AutoCAD API的PolygonMesh類。我想用網格繪製一個簡單的框。我寫了一個簡單的方法來查看PolygonMesh的行爲方式用AutoCAD中的網格繪製一個框(C#)
[CommandMethod("TESTSIMPLEMESH")]
public void TestSimpleMesh()
{
// Get the current document and database, and start a transaction
Document acDoc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
Database acCurDb = acDoc.Database;
using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
{
BlockTable acBlkTbl = acTrans.GetObject(_database.BlockTableId, OpenMode.ForRead) as BlockTable; // Open the Block table record for read
BlockTableRecord acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord; // Open the Block table record Model space for write
// Create a polygon mesh
PolygonMesh acPolyMesh = new PolygonMesh();
acPolyMesh.MSize = 4;
acPolyMesh.NSize = 4;
acPolyMesh.MakeNClosed(); //What is N???
acPolyMesh.MakeMClosed(); //What is M???
// Add the new object to the block table record and the transaction
acBlkTblRec.AppendEntity(acPolyMesh);
acTrans.AddNewlyCreatedDBObject(acPolyMesh, true);
//Creating collection of points to add to the mesh
Point3dCollection acPts3dPMesh = new Point3dCollection();
acPts3dPMesh.Add(new Point3d(100, 100, 0));
acPts3dPMesh.Add(new Point3d(200, 100, 0));
acPts3dPMesh.Add(new Point3d(200, 200, 0));
acPts3dPMesh.Add(new Point3d(100, 200, 0));
acPts3dPMesh.Add(new Point3d(100, 100, 100));
acPts3dPMesh.Add(new Point3d(200, 100, 100));
acPts3dPMesh.Add(new Point3d(200, 200, 100));
acPts3dPMesh.Add(new Point3d(100, 200, 100));
//Converting those points to PolygonMeshVertecies and appending them to the PolygonMesh
foreach (Point3d acPt3d in acPts3dPMesh)
{
PolygonMeshVertex acPMeshVer = new PolygonMeshVertex(acPt3d);
acPolyMesh.AppendVertex(acPMeshVer);
acTrans.AddNewlyCreatedDBObject(acPMeshVer, true);
}
// Save the new objects to the database
acTrans.Commit();
}
}
我期望的方法是繪製一個簡單的塊。相反,我得到一個塊,但也有行會又回到了原點:
如何改變這種方法,這樣,它只是繪製盒呢?
此外,如果有人可以解釋值M和N相對於網格,這將是真棒。
這是完美的,非常感謝! –