新手入门必看：VectorDraw 常见问题整理大全（五）

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. 选择XRef的实体

问：查找光标下显示的实体的最佳方法是什么/p>

答：附加的XRef文档在图形中用vdInserts视为vdBlocks。因此，当您附加外部参考文件时，会在文档中添加一个块并插入此块。在vdfCAD中，如果打开图形并单击附加的XRef，您将看到vdInsert对象。

您可以使用以下代码获取您单击的内部实体（vdInsert）：

object ret = vdFramedControl1.BaseControl.ActiveDocument.ActionUtility.getUserPoint();if (ret is VectorDraw.Geometry.gPoint){    VectorDraw.Geometry.gPoint p1 = vdFramedControl1.BaseControl.ActiveDocument.World2PixelMatrix.Transform(ret as VectorDraw.Geometry.gPoint);    Point location = new Point((int)p1.x, (int)p1.y);    // This code will return the xREF as vdInsert    VectorDraw.Professional.vdPrimaries.vdFigure fig = vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.GetEntityFromPoint(location, vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.Render.GlobalProperties.PickSize, false);    if (fig != null)    {        fig.HighLight = true;        fig.Invalidate();        MessageBox.Show("Figure is a : " + fig.ToString());        fig.HighLight = false;        fig.Invalidate();    }// This code will return the inner entity, this is what you want    VectorDraw.Professional.vdPrimaries.vdFigure outerfig; // this should be the xREF vdInsert    VectorDraw.Geometry.Matrix matr = new VectorDraw.Geometry.Matrix();    VectorDraw.Professional.vdPrimaries.vdFigure innerfig = vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.GetInnerEntityFromPoint(out matr, out outerfig, location, vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.Render.GlobalProperties.PickSize, false);    if (innerfig != null && outerfig != null)    {        innerfig.HighLight = true; //This is the inner entity you want.        innerfig.Invalidate();        MessageBox.Show("Figure is a : " + innerfig.ToString() + " contained in " + outerfig.ToString());        innerfig.HighLight = false;        innerfig.Invalidate();    }}

二. 将LineType Penstyle设置为Render

问：如何更改渲染对象的线型（solid，dashdot等）知道vdLineType可以在Vdraw.BaseControl.ActiveDocument.LineTypes中选择，但我找不到渲染线类型的类似集合。

答：在空项目中添加一个调用cmdLine“user”和VDScrollable控件的按钮。添加OnActionDraw事件处理程序，并在ActiveDocument_OnActionDraw中使用如下代码：

void ActiveDocument_OnActionDraw(object sender, object action, bool isHideMode, ref bool cancel){    if (!(action is VectorDraw.Actions.ActionGetRefPoint)) return;    VectorDraw.Actions.BaseAction act = action as VectorDraw.Actions.BaseAction;    VectorDraw.Geometry.gPoint refpoint = act.ReferencePoint;    VectorDraw.Geometry.gPoint currentpoint = act.OrthoPoint;    // Draw the circle using vdCircle object     VectorDraw.Professional.vdFigures.vdCircle circle = new VectorDraw.Professional.vdFigures.vdCircle();    circle.SetUnRegisterDocument(vdSC.BaseControl.ActiveDocument);    circle.setDocumentDefaults();    circle.LineType = vdSC.BaseControl.ActiveDocument.LineTypes.DPIDashDotDot; // The Linetype here    circle.Center = VectorDraw.Geometry.gPoint.MidPoint(refpoint, currentpoint);    circle.Radius = circle.Center.Distance3D(refpoint);    circle.Draw(act.Render);    // OR you can use the Render.Draw....    act.Render.PushPenstyle(Color.Red, 0.1d, vdSC.BaseControl.ActiveDocument.LineTypes.FindName("CENTER").GetgrLineType());    act.Render.DrawLine(sender, new VectorDraw.Geometry.gPoint(0, 0, 0), currentpoint);    act.Render.PopPenstyle(); // THIS IS NECESSARY after every push}

三. 使用打印机导出到光栅和PDF / SVG / EMF / HPGL文件

问：如何使用打印机导出到光栅JPG / BMP / TIF / GIF和PDF / SVG / EMF / HPGL文件/p>

答：在版本6010及更高版本中，vdPrinter对象可用于将整个图形或部分图形导出为栅格（BMP JPG GIF TIF）和PDF，SVG，HPGL和EMF文件。下面是C＃中可用于此的示例代码：

private void button1_Click(object sender, EventArgs e){// Except for EMF, the same can be done with PDF, BMP, JPG, SVG, HPG (HPGL)// From version 6010 and above the printer can be used in order to export an area or the whole drawing in a// raster format (BMP, JPG), PDF, SVG, or HGPL#region create simple drawing   //create a simple drawing   vdFC.BaseControl.ActiveDocument.New();    vdFC.BaseControl.ActiveDocument.CommandAction.CmdBox3d(new VectorDraw.Geometry.gPoint(10, 10), 10, 12, 14, 10);    vdFC.BaseControl.ActiveDocument.CommandAction.CmdCircle(new VectorDraw.Geometry.gPoint(3, 3), 5.0d);#endregion#region save as EMF the Extends using fixed EMF width   //save as EMF the Extends using fixed EMF width   vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.PrinterName = "c:\test_extends.emf"; // or PDF bmp jpg svg   vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.Resolution=96; //Screen DPI   VectorDraw.Geometry.Box Extends= vdFC.BaseControl.ActiveDocument.ActiveLayOut.Entities.GetBoundingBox(true,true);   int EMFwidth = 500; //fixed width   int EMFheight = (int) (EMFwidth * Extends.Height/Extends.Width); // keep propotions   vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.paperSize = new Rectangle(0, 0, (int)(EMFwidth * 100 / vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.Resolution), (int)(EMFheight * 100 / vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.Resolution));    vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.PrintExtents();    vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.PrintScaleToFit();    vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.PrintOut();#endregion#region save as EMF the screen using fixed EMF height   //save as EMF the screen using fixed EMF height   vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.PrinterName = "c:\test_screen.emf"; // or PDF bmp jpg svg   vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.Resolution = 96; //Screen DPI   VectorDraw.Geometry.Box screen_Box = new VectorDraw.Geometry.Box();   double screen_width = vdFC.BaseControl.ActiveDocument.ActiveLayOut.PixelSize * vdFC.BaseControl.Width;   double screen_height = vdFC.BaseControl.ActiveDocument.ActiveLayOut.ViewSize;    screen_Box.AddPoint(vdFC.BaseControl.ActiveDocument.ActiveLayOut.ViewCenter - new VectorDraw.Geometry.gPoint(screen_width / 2.0d, screen_height / 2.0d));    screen_Box.AddPoint(vdFC.BaseControl.ActiveDocument.ActiveLayOut.ViewCenter + new VectorDraw.Geometry.gPoint(screen_width / 2.0d, screen_height / 2.0d));    EMFheight = 500; // this is fixed   EMFwidth = (int)(EMFheight * screen_width / screen_height); //keeping the propotion   vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.paperSize = new Rectangle(0, 0, (int)(EMFwidth * 100 / vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.Resolution), (int)(EMFheight * 100 / vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.Resolution));    vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.PrintWindow = screen_Box; // Here the code can be changed so    // the user can select a rectangle in screen and this area is saved to file.   vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.PrintScaleToFit();    vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.PrintOut();#endregion#region call the PrintPreview in order the user to select the area to export to file   // call the PrintPreview in order the user to select the area to export to file   vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.PrinterName = "*.emf"; // Using *.emf or *.pdf etc the print dialog will prompt a dialog to input the file name   vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.Resolution = 96; //Screen DPI   EMFwidth = 500; //fixed width   EMFheight = 500; // and height   vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.paperSize = new Rectangle(0, 0, (int)(EMFwidth * 100 / vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.Resolution), (int)(EMFheight * 100 / vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.Resolution));    vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.PrintExtents();    vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.PrintScaleToFit();    vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.InitializePreviewFormProperties(true, true, false, false);    vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.CenterDrawingToPaper();    vdFC.BaseControl.ActiveDocument.ActiveLayOut.Printer.DialogPreview();#endregion}

使用VDF Wrapper ActiveX（vdraw.ocx）和VectorDraw.Geometry.tlb以及VectorDraw.Professional.tlb，您可以使用以下代码执行相同操作：

Private Sub Command1_Click() Dim doc As VectorDraw_Professional.vdDocument Dim box As Variant Dim EMFwidth As Long Dim EMFheight As Long Dim extends As New VectorDraw_Geometry.box    Set doc = VDraw1.ActiveDocument.WrapperObject     doc.ActiveLayOut.Printer.PrinterName = App.Path + "10165.emf"    doc.ActiveLayOut.Printer.Resolution = 96    extends.AddBox doc.ActiveLayOut.entities.GetBoundingBox(True, False)    extends.Transformby doc.World2ViewMatrix    extends.AddWidth doc.ActiveLayOut.Render.PixelSize * CDbl(0.5)     EMFwidth = 1000    EMFheight = CLng(EMFwidth * extends.Height / extends.Width + 0.5)    doc.ActiveLayOut.Printer.SelectPaper "CUSTOM"    doc.ActiveLayOut.Printer.MARGINS.Top = 0    doc.ActiveLayOut.Printer.MARGINS.Bottom = 0    doc.ActiveLayOut.Printer.MARGINS.Left = 0    doc.ActiveLayOut.Printer.MARGINS.Right = 0    doc.ActionLayout.Printer.Update     VDraw1.ActiveDocument.ActiveLayOut.Printer.ActivePaperWidth = CLng(100# * CDbl(EMFwidth)  / CDbl(doc.ActiveLayOut.Printer.Resolution))    VDraw1.ActiveDocument.ActiveLayOut.Printer.ActivePaperHeight = CLng(100# * CDbl(EMFheight) / CDbl(doc.ActiveLayOut.Printer.Resolution))      Set doc.ActiveLayOut.Printer.PrintWindow = extends    doc.ActiveLayOut.Printer.PrintScaleToFit    doc.ActiveLayOut.Printer.PrintOutEnd Sub

未完待续……

标签：CAD工业4.0