本系列教程整理了VectorDraw Developer Framework（VDF）最常见问题，教程整理的很齐全，非常适合新手学习，本节教程将会介绍一些创建3D对象的方法。
VectorDraw Developer Framework试用版下载
问：
如何才能创建一些3D对象/p>
答：
您可以使用一些基本功能和对象在VDF中创建的3D对象。
一、使用CommandAction方法，如：
private void button1_Click(object sender, EventArgs e) { Doc = vdFramedControl1.BaseControl.ActiveDocument; gPoints pts = new gPoints(); pts.Add(new gPoint(-16, 0)); pts.Add(new gPoint(-14, 0)); pts.Add(new gPoint(-14, 3)); pts.Add(new gPoint(-16, 3)); Doc.CommandAction.Cmd3dFace(pts); // create a 3D face from 4 points pts = new gPoints(); pts.Add(new gPoint(-12, 0, 0)); pts.Add(new gPoint(-10, 0, -1)); pts.Add(new gPoint(-8, 0, 0)); pts.Add(new gPoint(-5, 0, 0)); pts.Add(new gPoint(-12, 3, 1)); pts.Add(new gPoint(-10.5, 2.7, -1)); pts.Add(new gPoint(-8, 3, 0)); pts.Add(new gPoint(-5, 3.2, 0)); pts.Add(new gPoint(-12, 6, 0)); pts.Add(new gPoint(-10.5, 5.7, 4)); pts.Add(new gPoint(-8, 6, 1)); pts.Add(new gPoint(-5, 5.8, 1)); pts.Add(new gPoint(-12.5, 9, -0.5)); pts.Add(new gPoint(-10.5, 9.2, 2)); pts.Add(new gPoint(-8, 9.1, 0)); pts.Add(new gPoint(-5, 8.8, 0)); Doc.CommandAction.Cmd3DMesh(4, 4, pts); // create a vdPolyface MESH that is made by 16 points Doc.CommandAction.CmdSphere(new gPoint(0,0,0),3.0d,32,16); // create a sphere Doc.CommandAction.CmdCone(new gPoint(7, 0, 0), 3.0d, 1.0d, 10.0d, 30);// create a cone Doc.CommandAction.CmdBox3d(new gPoint(11, 0, 0), 4.0d, 2.0d, 3.0d, 0.0d); // create a orthogonal 6-side box Doc.CommandAction.CmdTorus(new gPoint(19, 0), 2.0D, 0.5D, 30, 20); // create a torus }
二、通过使用vdPolyface对象的代码：
private void button2_Click(object sender, EventArgs e) { Doc = vdFramedControl1.BaseControl.ActiveDocument; int[] array_faces = {1, 2, 5, 4, 116, // connect vertexes 1, 2, 5 and 4 to one face with color 116 7, 8, 3, 3, 116, 7, 12, 3, 3, 116, 8, 3, 6, 9, 116, 3, 12, 11, 6, 116, 6, 9, 10, 10, 116, 6, 10, 11, 11, 116, 7, 8, 14, 13, -1, 14, 15, 25, 8, -1, 15, 16, 9, 25, -1, 9, 10, 17, 16, -1, 17, 18, 11, 10, -1, 11, 26, 19, 18, -1, 12, 26, 19, 20, -1, 7, 12, 20, 13, -1, 20, 19, 23, 24, -1, 14, 15, 22, 21, -1, 15, 19, 23, 22, -1, 14, 20, 24, 21, -1, 21, 22, 23, 24, -1, 13, 14, 20, 20, 2, 16, 17, 18, 18, 2, 15, 16, 18, 19, 2}; Int32Array faces = new Int32Array(array_faces); gPoints pts = new gPoints(); pts.Add(2, 0, 0); pts.Add(3, 0, 0); pts.Add(1, 0, 1); pts.Add(2.2, 0, 1); pts.Add(3.8, 0, 1); pts.Add(5, 0, 1); pts.Add(0, 0, 2); pts.Add(1, 1, 2); pts.Add(5.5, 1, 2); pts.Add(7, 0, 2); pts.Add(5.5, -1, 2); pts.Add(1, -1, 2); pts.Add(-0.5, 0, 3); pts.Add(0.5, 1.5, 3); pts.Add(3.5, 1.7, 3); pts.Add(6, 1.5, 3); pts.Add(8, 0, 3); pts.Add(6, -1.5, 3); pts.Add(3.5, -1.7, 3); pts.Add(0.5, -1.5, 3); pts.Add(0.5, 1, 4); pts.Add(3, 1, 4); pts.Add(3, -1, 4); pts.Add(0.5, -1, 4); pts.Add(3.25, 1, 2); pts.Add(3.25, -1, 2); vdPolyface pFace = new vdPolyface(Doc, pts, faces); // create the vdPolyface and Doc.Model.Entities.AddItem(pFace); // add it to the document Doc.CommandAction.View3D("VISW"); Doc.CommandAction.View3D("SHADE"); }
三、使用Generate3DPathSection：
private void button3_Click(object sender, EventArgs e) { Doc = vdFramedControl1.BaseControl.ActiveDocument; //create an oval tube vdEllipse ci = new vdEllipse(Doc, new gPoint(), 0.03, 0.02, 0, 0, 0); // Doesn't need to be in the document Vertexes verts = new Vertexes(); verts.Add(0, 0, 0, 0); verts.Add(0, 1, 0, -0.5); verts.Add(1, 1, 0, 0.2); verts.Add(1, 2, 0, 0); vdPolyline pline = new vdPolyline(Doc, verts);// Doesn't need to be in the document //We will use a polyline as path and an ellipse as section which ellipse is going to go round the polyline and create the polyface needed. vdPolyface pface = new vdPolyface(); pface.SetUnRegisterDocument(Doc); pface.setDocumentDefaults(); pface.setDocumentDefaults(); pface.Generate3dPathSection(pline, ci, new gPoint(0, 0.0, 0.0), 0, 1); Doc.Model.Entities.AddItem(pface); // add the polyface to the document. }
四、使用GroundSurface：
检查AddEntities Sample和GroundSurface按钮，点击那里的代码。
五、通过切割（切片）现有的多面体：
private void button4_Click(object sender, EventArgs e) { Doc = vdFramedControl1.BaseControl.ActiveDocument; Doc.New(); if (Doc.CommandAction.CmdSphere(new gPoint(0, 0, 0), 3.0d, 32, 16)) // create a sphere { vdPolyface pface = Doc.Model.Entities[Doc.Model.Entities.Count - 1] as vdPolyface; if (pface != null) { pface.PenColor.FromSystemColor(Color.PowderBlue); pface.Slice(new gPoint(-0.5, 0, 0), new Vector(-1, 0, 0), true, true); pface.Slice(new gPoint(0, -1, 0), new Vector(-1, -1, 0), false,true); // do not cover this slice Doc.CommandAction.View3D("SHADE"); } } }
六、通过使用具有厚度的vdPolyHatch对象和ToMesh（）函数将其转换为vdPolyface对象，如：
private void button5_Click(object sender, EventArgs e) { double dLength = 400; double dDInterior = 100; double dDExterior = 200; double dSpecial = 10; double dHelp = dDInterior - dSpecial; Doc = vdFramedControl1.BaseControl.ActiveDocument; Doc.New(); vdPolyline oPLine = new vdPolyline(); oPLine.SetUnRegisterDocument(Doc); oPLine.setDocumentDefaults(); oPLine.VertexList.Add(new Vertex(dDExterior / 2, 0, 0, 1)); oPLine.VertexList.Add(new gPoint(-dDExterior / 2, 0, 0)); oPLine.VertexList.Add(new Vertex(-dDExterior / 2, 0, 0, 1)); oPLine.Flag = VectorDraw.Professional.Constants.VdConstPlineFlag.PlFlagCLOSE; vdPolyline oPLine2 = new vdPolyline(); oPLine2.SetUnRegisterDocument(Doc); oPLine2.setDocumentDefaults(); oPLine2.VertexList.Add(new Vertex(dDInterior / 2, -dSpecial / 2, 0, -1)); oPLine2.VertexList.Add(new gPoint(-dDInterior / 2, -dSpecial / 2, 0)); oPLine2.Flag = VectorDraw.Professional.Constants.VdConstPlineFlag.PlFlagCLOSE; vdPolyline oPLine3 = new vdPolyline(); oPLine3.SetUnRegisterDocument(Doc); oPLine3.setDocumentDefaults(); oPLine3.VertexList.Add(new Vertex(dDInterior / 2, dSpecial / 2, 0, 1)); oPLine3.VertexList.Add(new gPoint(-dDInterior / 2, dSpecial / 2, 0)); oPLine3.Flag = VectorDraw.Professional.Constants.VdConstPlineFlag.PlFlagCLOSE; VectorDraw.Professional.vdCollections.vdCurves curves_Outer = new VectorDraw.Professional.vdCollections.vdCurves(); curves_Outer.AddItem(oPLine); VectorDraw.Professional.vdCollections.vdCurves curves_Inside = new VectorDraw.Professional.vdCollections.vdCurves(); curves_Inside.AddItem(oPLine2); curves_Inside.AddItem(oPLine3); //'create polyhatch vdPolyhatch onehatch = new vdPolyhatch(); onehatch.SetUnRegisterDocument(Doc); onehatch.setDocumentDefaults(); onehatch.PolyCurves.AddItem(curves_Outer); onehatch.PolyCurves.AddItem(curves_Inside); onehatch.HatchProperties = new VectorDraw.Professional.vdObjects.vdHatchProperties(VectorDraw.Professional.Constants.VdConstFill.VdFillModeSolid); onehatch.Thickness = dLength; //'create polyhatch vdPolyface oPFace = onehatch.ToMesh(0); oPFace.PenColor.FromSystemColor(Color.Purple); Doc.Model.Entities.AddItem(oPFace); Doc.CommandAction.View3D("VISE"); Doc.CommandAction.View3D("SHADE"); Doc.Model.ZoomExtents(); }
七、通过使用vdPolyface对象的cut命令。
param name =curve>用于剪切多面的vdCurve对象。您可以使用圆，矩形，椭圆，折线和切割多面体对象。
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