新手入門必看：VectorDraw 常見問題整理大全（十六）

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VectorDraw Developer Framework（VDF）是一個用于應用程序可視化的圖形引擎庫。有了VDF提供的功能，您可以輕松地創(chuàng)建、編輯、管理、輸出、輸入和打印2D和3D圖形文件。該庫還支持許多矢量和柵格輸入和輸出格式，包括本地PDF和SVG導出。

【VectorDraw Developer Framework最新版下載】

VectorDraw web library (javascript)是一個矢量圖形庫。VectorDraw web library (javascript)不僅能打開CAD圖紙，而且能顯示任何支持HTML5標準平臺上的通用矢量對象，如Windows，安卓，iOS和Linux。無需任何安裝，VectorDraw web library (javascript)就可以運行在任何支持canvas標簽和Javascript的主流瀏覽器（Chrome, Firefox, Safari, Opera, Dolphin, Boat等等）中。

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

一. 通過鍵盤鍵和要傳遞給活動命令的點通過命令透明地調(diào)用放大鏡

問：如何通過鍵盤鍵和要傳遞給活動命令的點通過命令透明地調(diào)用放大鏡？

答：你可以使用以下代碼：

private void Form1_Load（object sender，EventArgs e）

{

vdFramedControl.BaseControl.KeyDown + = new KeyEventHandler（BaseControl_KeyDown）;

}

 

void BaseControl_KeyDown（object sender，KeyEventArgs e）

{

if（e.KeyCode == Keys .ControlKey ）doc.ActionUtility.StartUserMagnifier（doc，3,210，-100）;

}

請注意，這適用于版本6016及更高版本。

二. 計算vdPolyHatch對象的面積和長度

問：如何計算vdPolyHatch對象的面積和長度？

答：你可以使用以下代碼計算復雜vdPolyhatch的面積和長度：

private void button1_Click(object sender, EventArgs e)
{
   vdFramedControl1.BaseControl.ActiveDocument.Open(@"c:\321\Hatch\test.vdml"); // I have used a test drawing that containd a hatch
   VectorDraw.Professional.vdFigures.vdPolyhatch pHatch = vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.Entities[4] as VectorDraw.Professional.vdFigures.vdPolyhatch;// this is the vdPolyHatch object that I need to calculate the length and area
   if (pHatch == null) return;
   double area = pHatch.ToMesh(0).Area();
   double length1 =0.0d;

   foreach (VectorDraw.Professional.vdCollections.vdCurves curves in pHatch.PolyCurves)
   {
      foreach (VectorDraw.Professional.vdFigures.vdCurve curve in curves)
      {
         length1 += curve.Length();
      }
   }
   this.Text = "Area: " + area.ToString(); +" Length: " + length1.ToString();
}

三. 加速多圖紙印刷

問：如何加快多圖紙印刷？

答：為了使你的打印速度更快，你需要為所有圖紙選擇一個通用的vdPrint對象。

//A common printer for all drawings.

VectorDraw.Professional.vdObjects.vdPrint mPrinter = new VectorDraw.Professional.vdObjects.vdPrint();

 

void SelectPrinter()

{

mPrinter.SetUnRegisterDocument(vdDrawingManager.BaseControl.ActiveDocument);

mPrinter.PrinterName = "";//The default system printer

mPrinter.SelectPaper("PRINTER-DEFAULT");//The default paper of selected system printer

mPrinter.OutInBlackWhite = true;

mPrinter.LandScape = true;

//here you can change some additional properties for selected printer like Margings Resolution copies

mPrinter.UpdatePrinterFromProperties();//this will update the internally selected System.Drawing.Printing.PrintDocument

}

 

void Print(vdDocument document)

{

mPrinter.DocumentName = "Printing Example(" + document.FileName +")";

mPrinter.SetLayout(document.ActiveLayOut);

mPrinter.PrintExtents();

mPrinter.PrintScaleToFit();

mPrinter.PrintOut();

mPrinter.SetLayout(null);

}

四. 將一些表格作為新圖紙或現(xiàn)有圖紙的模板

問：我需要在我的應用程序加載或創(chuàng)建模板的所有圖形中標注一些文本樣式和暗淡標準。我該怎么做？

答：可以通過在圖形中包含這些表（或更多取決于你的應用程序需要）來完成，并在臨時圖形中打開它們并使用MergeTables將它們合并。例如 ：

namespace CreateAndMerge
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void AddTextstylesItems(VectorDraw.Professional.vdObjects.vdDocument doc)
        {
            //We add a textstyle with font name Verdana.
            VectorDraw.Professional.vdPrimaries.vdTextstyle style1 = new VectorDraw.Professional.vdPrimaries.vdTextstyle();
            style1.SetUnRegisterDocument(doc);
            style1.setDocumentDefaults();
            style1.Name = "TextStyle1";
            style1.FontFile = "Verdana";
            doc.TextStyles.AddItem(style1);

            VectorDraw.Professional.vdPrimaries.vdTextstyle style2 = new VectorDraw.Professional.vdPrimaries.vdTextstyle();
            style2.SetUnRegisterDocument(doc);
            style2.setDocumentDefaults();
            style2.Name = "TextStyle2";
            style2.Extra.IsUnderLine = true;
            style2.Extra.IsStrikeOut = true;
            style2.FontFile = "Lucida Console";
            doc.TextStyles.AddItem(style2);
        }

        private void AddDimstylesItems(VectorDraw.Professional.vdObjects.vdDocument doc)
        {
            //We create a vdDimstyle object.
            VectorDraw.Professional.vdPrimaries.vdDimstyle style1 = new VectorDraw.Professional.vdPrimaries.vdDimstyle();
            style1.SetUnRegisterDocument(doc);
            style1.setDocumentDefaults();
            //And change some properties.
            style1.Name = "DimStyle1";
            style1.TextColor.ColorIndex = 1;
            style1.TextHeight = 0.5;
            //And add this object to the Dimstyles collection of the document.
            doc.DimStyles.AddItem(style1);

            //We can also add dimstyles using the Add function of the dimstyles collection which is much easier.
            VectorDraw.Professional.vdPrimaries.vdDimstyle style2 = doc.DimStyles.Add("DimStyle2");
            style2.ExtLineVisible = false;
            style2.TextHeight = 0.5;

            VectorDraw.Professional.vdPrimaries.vdDimstyle style3 = doc.DimStyles.Add("DimStyle3");
            style3.ExtLineColor.ColorIndex = 1;
            style3.DimTol = true;
            style3.DimTp = 0.3;
            style3.DimTm = 0.3;
            style3.TextHeight = 0.5;

            VectorDraw.Professional.vdPrimaries.vdDimstyle style4 = doc.DimStyles.Add("DimStyle4");
            style4.DimAdec = 0;
            style4.DecimalPrecision = 0;
            style4.TextHeight = 0.5;

            VectorDraw.Professional.vdPrimaries.vdDimstyle style5 = doc.DimStyles.Add("DimStyle5");
            style5.ArrowBlock = doc.Blocks.VDDIM_NONE;
            style5.TextHeight = 0.5;

            VectorDraw.Professional.vdPrimaries.vdDimstyle style6 = doc.DimStyles.Add("DimStyle6");
            style6.ArrowSize *= 5.0;
            style6.TextHeight = 0.5;
        }

        private void btOpen_Click(object sender, EventArgs e)
        {
            //First we call the dialog to select the file to open and then open the file.
            object ret = vdFrameControl.BaseControl.ActiveDocument.GetOpenFileNameDlg(0, "", 0);
            if (ret == null) return;
            string fname = (string)ret;
            bool success = vdFrameControl.BaseControl.ActiveDocument.Open(fname);
            if (success) vdFrameControl.BaseControl.ActiveDocument.Redraw(true);
        }

        private void btMergeTables_Click(object sender, EventArgs e)
        {
            // This code will open the template drawing file which contains the tables (vdTextStyles, vdDimStyles,
            //      vdLayers, vdBlocks etc) that we mostly use, in a vdDocument component and merge this with a new 
            //      drawing or with a drawing that already exists.
            VectorDraw.Professional.Components.vdDocumentComponent vdDocComponent;
            vdDocComponent = new VectorDraw.Professional.Components.vdDocumentComponent();
            vdDocComponent.Document.Open(@"e:\tests\tables.vdcl");
            DialogResult res= MessageBox.Show("Do you want to replace existing (if they exist already) tables in the document", "Overwrite Existing", MessageBoxButtons.YesNo);
            vdFrameControl.BaseControl.ActiveDocument.MergeTables(vdDocComponent.Document, false, (bool)(res == DialogResult.Yes));
            vdFrameControl.BaseControl.ActiveDocument.CommandAction.RegenAll(); // this is needed to update the tables and entities
            vdDocComponent.Document.New();
            vdDocComponent.Document.Dispose();
            vdDocComponent.Dispose();
        }

        private void btCreateTemplate_Click(object sender, EventArgs e)
        {    
            //creating the drawing which contains the tables with the TextStyles and DimStyles that we need to use in other drawings
            // then the drawing is saved as vdcl file
            VectorDraw.Professional.Components.vdDocumentComponent vdDocComponent;
            vdDocComponent = new VectorDraw.Professional.Components.vdDocumentComponent();

            AddTextstylesItems(vdDocComponent.Document);
            AddDimstylesItems(vdDocComponent.Document);
            vdDocComponent.Document.SaveAs(@"e:\tests\tables.vdcl", null);
            vdDocComponent.Document.New();
            MessageBox.Show("The TextStyles and DimStyles are created. Now you can open the drawing you want and merge them to this drawing.");
            vdDocComponent.Document.Dispose();
            vdDocComponent.Dispose();
        }

    }
}

五. 在vdInsert活躍后顯示屬性字符串

問：在vdInsert活躍后，是否可以顯示值而不是vdAttribute的標記？

答：對于內(nèi)部具有屬性（vdAttribDef和vdAttribs）的插入，所有CAD軟件都會發(fā)生這種情況。這不算是錯誤或者問題，如果你希望保持文本顯示相同，則必須使用“special”活躍，這將更改這些attrib-definitions的TagString屬性。請參閱以下代碼：

private void button2_Click(object sender, EventArgs e)
{
    VectorDraw.Professional.vdFigures.vdInsert ins = vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.Entities[0] as VectorDraw.Professional.vdFigures.vdInsert;
    // assume that the drawing contains only a vdInsert with attributes so this is Entity 0.
 
    if (ins == null) return;
    VectorDraw.Professional.vdCollections.vdEntities exploded_entities = ins.Explode();
    vdFramedControl1.BaseControl.ActiveDocument.UndoHistory.StoreUndoGroup(true, "EXPLODE");
    ins.Deleted = true;
    foreach (VectorDraw.Professional.vdPrimaries.vdFigure var in exploded_entities)
    {
       vdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.Entities.AddItem(var);
       VectorDraw.Professional.vdFigures.vdAttribDef def = var as VectorDraw.Professional.vdFigures.vdAttribDef;
       if (def != null)
       {
          def.TagString = def.ValueString.ToString(); // this is the code that you want that the default explode function do not have
       }
       var.Invalidate();
    }
    vdFramedControl1.BaseControl.ActiveDocument.UndoHistory.StoreUndoGroup(false, "EXPLODE");
}

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