新手入门必看：VectorDraw 常见问题整理大全（十二）

本教程整理了VectorDraw 最常见问题，教程整理的很齐全，非常适合新手学习，希望对大家有一定的帮助！

VectorDraw Developer Framework（VDF）是一个用于应用程序可视化的图形引擎库。有了VDF提供的功能，您可以轻松地创建、编辑、管理、输出、输入和打印2D和3D图形文件。该库还支持许多矢量和栅格输入和输出格式，包括本地PDF和SVG导出。

【VectorDraw Developer Framework最新版下载】

VectorDraw web library (javascript)是一个矢量图形库。VectorDraw web library (javascript)不仅能打开CAD图纸，而且能显示任何支持HTML5标准平台上的通用矢量对象，如Windows，安卓，iOS和Linux。无需任何安装，VectorDraw web library (javascript)就可以运行在任何支持canvas标签和Javascript的主流浏览器（Chrome, Firefox, Safari, Opera, Dolphin, Boat等等）中。

【VectorDraw web library (javascript)最新版下载】

一. 为user-SaveAs提出路径，文件名和版本

问：如何向用户-SaveAs提出路径，文件名（文件类型）和版本/p>

答：创建一个新的C＃项目，并在表单中添加一个vdFramed控件和一个按钮。然后使用如下代码：

   public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private string GetSaveDlgFilterFormats()        {            string filetypes = "";            filetypes += "VDML (*.vdml)|*.vdml|";            filetypes += "vdcl (*.vdcl)|*.vdcl|";            filetypes += "DXF 2004 (*.dxf)|*.dxf|";            filetypes += "DXF 2000 (*.dxf)|*.dxf|";            filetypes += "DXF 12 (*.dxf)|*.dxf|";            filetypes += "|";            return filetypes;        }        public string GetSaveFileNameDlg(ref string version)        {            SaveFileDialog saveFileDialog1 = new SaveFileDialog();            saveFileDialog1.Filter = GetSaveDlgFilterFormats();            if (version == "") version = vdFramedControl1.BaseControl.ActiveDocument.Version.ToUpper();            string defaultFileName = vdFramedControl1.BaseControl.ActiveDocument.FileName;            if (defaultFileName == "") defaultFileName = "VectorDraw"; // use your default name here            if (defaultFileName != null && defaultFileName != "")            {                saveFileDialog1.FileName = VectorDraw.Professional.Utilities.vdGlobals.GetFileNameWithoutExtension(defaultFileName);                saveFileDialog1.InitialDirectory = VectorDraw.Professional.Utilities.vdGlobals.GetDirectoryName(defaultFileName);                int FilterIndex = 1;                if (defaultFileName.EndsWith(".dxf", StringComparison.InvariantCultureIgnoreCase))                {                    switch (version)                    {                        case "DXF2004":                            FilterIndex = 3;                            break;                        case "DXF2000":                            FilterIndex = 4;                            break;                        case "DXF12":                            FilterIndex = 5;                            break;                        default:                            break;                    }                }                saveFileDialog1.FilterIndex = FilterIndex;            }            saveFileDialog1.RestoreDirectory = true;            DialogResult res = saveFileDialog1.ShowDialog(this);            Application.DoEvents();            if (res != DialogResult.OK) return null;            switch (saveFileDialog1.FilterIndex)            {                case 3:                    version = "DXF2004";                    break;                case 4:                    version = "DXF2000";                    break;                case 5:                    version = "DXF12";                    break;                default:                    break;            }            return saveFileDialog1.FileName;        }        private void saveas_Click(object sender, EventArgs e)        {//VDF,VDI,VDCL,VDML does not have versions.            string version = "DXF12";//propose this version or "DXF2000" or "DXF2004". Change to an empty string so the version of existing document will be selected.            vdFramedControl1.BaseControl.ActiveDocument.Filename= @"c:tempmydrawing.dxf"; // use the proposed path and the proposed name here            string fname = GetSaveFileNameDlg(ref version); // the filename (including path) that user chose            if (fname == null) return; // user canceled save.            vdFramedControl1.BaseControl.ActiveDocument.SaveAs(fname, null, version);        }    }

二. 在CmdCircle处于活动状态时在工具提示中显示圆的半径

问：当CmdCircle处于活动状态时，如何在工具提示中显示圆的半径/p>

答：在表单中放置vdFramedControl和一个简单的按钮。然后检查以下代码：

private void Form1_Load(object sender, EventArgs e){       vdFramedControl1.BaseControl.ActiveDocument.OnActionJobLoop += new VectorDraw.Professional.vdObjects.vdDocument.ActionJobLoopEventHandler(ActiveDocument_OnActionJobLoop);}private bool CmdCircleStarted = false;private void button1_Click(object sender, EventArgs e){       CmdCircleStarted = true;       vdFramedControl1.BaseControl.ActiveDocument.CommandAction.CmdCircle("USER", "USER");       vdFramedControl1.BaseControl.ActiveDocument.ToolTipText = "";       CmdCircleStarted = false;}void ActiveDocument_OnActionJobLoop(object sender, object action, ref bool cancel){      if (!CmdCircleStarted) return;      VectorDraw.Professional.CommandActions.ActionCircle act = action as VectorDraw.Professional.CommandActions.ActionCircle;       if (act == null) return;      VectorDraw.Professional.vdFigures.vdCircle circle = act.Entity as VectorDraw.Professional.vdFigures.vdCircle;      if (circle == null) return;      vdFramedControl1.BaseControl.ActiveDocument.ToolTipText = "Radius: " + vdFramedControl1.BaseControl.ActiveDocument.lunits.FormatLength (circle.Radius);}

三. 计算视口中显示的对象的位置

问：如何计算视口内显示的对象布局中的位置/p>

答：在新的C＃（Windows窗体）项目中添加vdFramed控件和2个按钮。然后添加以下代码：

public Form1(){                InitializeComponent();}ulong textHandle = 0;ulong circHandle = 0;ulong viewpHandle = 0;short ColorInd = 40;private void Form1_Load(object sender, EventArgs e){//create a circle, a text (these points will be calculated) a Layout and a Viewport.vdFramedControl1.BaseControl.ActiveDocument.New();//create a circleVectorDraw.Professional.vdFigures.vdCircle circ = new VectorDraw.Professional.vdFigures.vdCircle();circ.SetUnRegisterDocument(vdFramedControl1.BaseControl.ActiveDocument);circ.setDocumentDefaults();circ.Center = new VectorDraw.Geometry.gPoint(-3, -2, .5);circ.Radius = (double)3.3;vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.Entities.AddItem(circ);circHandle = circ.Handle.Value;//create a textVectorDraw.Professional.vdFigures.vdText txt = new VectorDraw.Professional.vdFigures.vdText();txt.SetUnRegisterDocument(vdFramedControl1.BaseControl.ActiveDocument);txt.setDocumentDefaults();txt.InsertionPoint = new VectorDraw.Geometry.gPoint(3, 1, 3.5);txt.TextString = "Find WCoords in Layout";vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.Entities.AddItem(txt);textHandle = txt.Handle.Value;//create a LayoutVectorDraw.Professional.vdPrimaries.vdLayout lay = new VectorDraw.Professional.vdPrimaries.vdLayout();lay.SetUnRegisterDocument(vdFramedControl1.BaseControl.ActiveDocument);lay.setDocumentDefaults();lay.Name = "MyLayout1";lay.ShowUCSAxis = false;vdFramedControl1.BaseControl.ActiveDocument.LayOuts.AddItem(lay);//create a ViewportVectorDraw.Professional.vdFigures.vdViewport view = new VectorDraw.Professional.vdFigures.vdViewport();view.SetUnRegisterDocument(vdFramedControl1.BaseControl.ActiveDocument);view.setDocumentDefaults();view.ShowUCSAxis = false;view.Height = 100;view.Width = 150;view.Center = new VectorDraw.Geometry.gPoint(100.0, 230.0);view.ViewCenter = new VectorDraw.Geometry.gPoint(4.4008, 1.8233);view.ViewSize = 17.0;view.PenColor.SystemColor = Color.Red;view.PenWidth = 1.0d;//And add this viewport to the entities of the first layout.lay = vdFramedControl1.BaseControl.ActiveDocument.LayOuts.FindName("MyLayout1");if (lay != null) lay.Entities.AddItem(view);viewpHandle = view.Handle.Value;vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut = lay;//change the view to the MyLayout1vdFramedControl1.BaseControl.ActiveDocument.Redraw(false);}private void buttonCalculatePoints_Click(object sender, EventArgs e){// this code will calculate (in WorldCS) the points of the two entities that are shown inside the viewport//get the entities from their handlesVectorDraw.Professional.vdFigures.vdCircle onecircle = vdFramedControl1.BaseControl.ActiveDocument.FindFromHandle(new VectorDraw.Professional.vdObjects.vdHandle(circHandle), typeof(VectorDraw.Professional.vdPrimaries.vdFigure)) as VectorDraw.Professional.vdFigures.vdCircle;VectorDraw.Professional.vdFigures.vdText onetext = vdFramedControl1.BaseControl.ActiveDocument.FindFromHandle(new VectorDraw.Professional.vdObjects.vdHandle(textHandle), typeof(VectorDraw.Professional.vdPrimaries.vdFigure)) as VectorDraw.Professional.vdFigures.vdText;//get the points to calculate (center point of the circle and insertion point of the text)VectorDraw.Geometry.gPoint CircPt = new VectorDraw.Geometry.gPoint(onecircle.Center); // circle's center point in WCSVectorDraw.Geometry.gPoint TextPt = new VectorDraw.Geometry.gPoint(onetext.InsertionPoint);// text's insertion point in WCSvdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut = vdFramedControl1.BaseControl.ActiveDocument.LayOuts[0];VectorDraw.Professional.vdFigures.vdViewport viewport = new VectorDraw.Professional.vdFigures.vdViewport();//get the viewport and set it to active in order to get the transformation matrixviewport = vdFramedControl1.BaseControl.ActiveDocument.FindFromHandle(new VectorDraw.Professional.vdObjects.vdHandle(viewpHandle), typeof(VectorDraw.Professional.vdPrimaries.vdFigure)) as VectorDraw.Professional.vdFigures.vdViewport;vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.ActiveViewPort = viewport;vdFramedControl1.BaseControl.ActiveDocument.Redraw(true);//do the transformations  and calculate the pointsVectorDraw.Geometry.gPoint ptC = vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.ActiveViewPort.Render.WorldToView(CircPt); // circle's center in Viewport's view coordinatesVectorDraw.Geometry.gPoint ptT = vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.ActiveViewPort.Render.WorldToView(TextPt);// text's insertion point in Viewport's view coordinatesVectorDraw.Geometry.gPoint ptT1 = new VectorDraw.Geometry.gPoint(); // in world coordinatesVectorDraw.Geometry.gPoint ptC1 = new VectorDraw.Geometry.gPoint();//in world coordinatesvdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.ActiveViewPort = null;VectorDraw.Geometry.Matrix mat = new VectorDraw.Geometry.Matrix();mat.ScaleMatrix(1 / viewport.ViewportScale, 1 / viewport.ViewportScale, 1 / viewport.ViewportScale);mat.TranslateMatrix(viewport.Center);mat.TransformPt(ptT - viewport.ViewCenter, ptT1);mat.TransformPt(ptC - viewport.ViewCenter, ptC1);// Create a line to connect the two calculated pointsVectorDraw.Professional.vdFigures.vdLine lin = new VectorDraw.Professional.vdFigures.vdLine();lin.SetUnRegisterDocument(vdFramedControl1.BaseControl.ActiveDocument);lin.setDocumentDefaults();lin.StartPoint = new VectorDraw.Geometry.gPoint(ptT1.x,ptT1.y,(double)0.0); // the insertion point of the text in World coordinates in the Layoutlin.EndPoint = new VectorDraw.Geometry.gPoint(ptC1.x, ptC1.y, (double)0.0); // the center point of the circle in World coordinates in the Layout// z is set to zero as it is not needed in Paper spaceslin.PenColor.ColorIndex = ColorInd;ColorInd += 1;lin.Invalidate();vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.Entities.AddItem(lin);}private void buttonChangeViewport_Click(object sender, EventArgs e){ // Change the viewport so the circle and text are shown in different position, then press the calculate button.VectorDraw.Professional.vdFigures.vdViewport viewport = new VectorDraw.Professional.vdFigures.vdViewport();viewport = vdFramedControl1.BaseControl.ActiveDocument.FindFromHandle(new VectorDraw.Professional.vdObjects.vdHandle(viewpHandle), typeof(VectorDraw.Professional.vdPrimaries.vdFigure)) as VectorDraw.Professional.vdFigures.vdViewport;vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.ActiveViewPort = viewport;vdFramedControl1.BaseControl.ActiveDocument.CommandAction.View3D("vise");viewport.ViewCenter = new VectorDraw.Geometry.gPoint(5, -4);viewport.ViewSize = 30;vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.ActiveViewPort = null;viewport.Update();viewport.Invalidate();}

敬请期待接下来的教程连载~

标签：CAD工业4.0

来源：慧都