新手入門必看：VectorDraw 常見問題整理大全（十一）

---

VectorDraw Developer Framework（VDF）是一個(gè)用于應(yīng)用程序可視化的圖形引擎庫(kù)。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(kù)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(dǎo)出。

【VectorDraw Developer Framework最新版下載】

VectorDraw web library (javascript)是一個(gè)矢量圖形庫(kù)。VectorDraw web library (javascript)不僅能打開CAD圖紙，而且能顯示任何支持HTML5標(biāo)準(zhǔn)平臺(tái)上的通用矢量對(duì)象，如Windows，安卓，iOS和Linux。無需任何安裝，VectorDraw web library (javascript)就可以運(yùn)行在任何支持canvas標(biāo)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. 在命令（或操作）處于活動(dòng)狀態(tài)時(shí)顯示實(shí)體的工具提示

問：我想在命令（或動(dòng)作）處于活動(dòng)狀態(tài)時(shí)顯示光標(biāo)下的實(shí)體工具提示。我怎樣才能做到這一點(diǎn) ？

答：默認(rèn)情況下，在GetUserPoint等操作或活動(dòng)命令期間無法顯示工具提示。這也是著名的CAD應(yīng)用程序的默認(rèn)行為，如果將其添加到VDF默認(rèn)行為，則可能會(huì)出現(xiàn)兩個(gè)問題。

• 隱藏工具提示區(qū)域下方的有用信息（端點(diǎn)，快照等），
• 作為Osnaps減慢性能，除了繪圖數(shù)據(jù)庫(kù)搜索必須在工具提示窗口內(nèi)繪制的文本之外，還必須計(jì)算交叉點(diǎn)蝕刻。

為此，我們無法在組件中添加此行為。如果您愿意，可以使用ActiveDocument.ActionLayout.GetEntifromPoint（使用布爾值更快的響應(yīng)）或GetTooltipFigure，并獲取光標(biāo)下方圖形的工具提示文本，并將其設(shè)置為文檔的ToolTipText屬性。就像是：

 
        private void Form1_Load(object sender, EventArgs e)
        {
            vdFramedControl.BaseControl.ActiveDocument.EnableToolTips = true;
            vdFramedControl.BaseControl.MouseMove += new MouseEventHandler(BaseControl_MouseMove);
        }
 
        void BaseControl_MouseMove(object sender, MouseEventArgs e)
        {
            bool allobjectsAresearched = false;
            vdFigure fig = vdFramedControl.BaseControl.ActiveDocument.ActionLayout.GetToolTipFigure(e.Location,vdFramedControl.BaseControl.ActiveDocument.ActiveActionRender.GlobalProperties.PickSize,true,out allobjectsAresearched);
            vdFramedControl.BaseControl.ActiveDocument.ToolTipText = "";
            if(fig == null) return;
            vdFramedControl.BaseControl.ActiveDocument.ToolTipText = fig.ToolTip;
        }
 

二. 在垂直于線的平面中的線起點(diǎn)和終點(diǎn)創(chuàng)建2個(gè)圓

問：如何在垂直于線的平面中的線起點(diǎn)和終點(diǎn)創(chuàng)建2個(gè)圓？

答：試試如下代碼：

private void button3_Click(object sender, EventArgs e)

{  
//create a line

  VectorDraw.Professional.vdFigures.vdLine line = new VectorDraw.Professional.vdFigures.vdLine();

  line.SetUnRegisterDocument(vdFramedControl.BaseControl.ActiveDocument);

  line.setDocumentDefaults();

  line.StartPoint = new VectorDraw.Geometry.gPoint(2, 3, 4);

  line.EndPoint = new VectorDraw.Geometry.gPoint(7, 8, 2);

  line.PenColor.SystemColor = Color.Red;

  line.PenWidth = .1;

  vdFramedControl.BaseControl.ActiveDocument.ActiveLayOut.Entities.AddItem(line);

 

//create a circle at the StartPoin of the previous line

  VectorDraw.Professional.vdFigures.vdCircle circle_SP = new VectorDraw.Professional.vdFigures.vdCircle();

  circle_SP.SetUnRegisterDocument(vdFramedControl.BaseControl.ActiveDocument);

  circle_SP.setDocumentDefaults();

  circle_SP.Center = new VectorDraw.Geometry.gPoint(line.StartPoint);

  circle_SP.Radius = (double)1.0;

//Set the circle's Extrusion vector to have the direction StartPoint ---> EndPoint

  circle_SP.ExtrusionVector = new VectorDraw.Geometry.Vector(new VectorDraw.Geometry.gPoint(line.StartPoint), new VectorDraw.Geometry.gPoint(line.EndPoint));

  vdFramedControl.BaseControl.ActiveDocument.ActiveLayOut.Entities.AddItem(circle_SP);

 

//create a circle at the EndPoint of the previous line

  VectorDraw.Professional.vdFigures.vdCircle circle_EP = new VectorDraw.Professional.vdFigures.vdCircle();

  circle_EP.SetUnRegisterDocument(vdFramedControl.BaseControl.ActiveDocument);

  circle_EP.setDocumentDefaults();

  circle_EP.Center = new VectorDraw.Geometry.gPoint(line.EndPoint);

  circle_EP.Radius = (double)1.0;

//Set the circle's Extrusion vector to have the direction EndPoint ---> StartPoint

  circle_EP.ExtrusionVector = new VectorDraw.Geometry.Vector(new VectorDraw.Geometry.gPoint(line.EndPoint), new VectorDraw.Geometry.gPoint(line.StartPoint));

  vdFramedControl.BaseControl.ActiveDocument.ActiveLayOut.Entities.AddItem(circle_EP);

 

  vdFramedControl.BaseControl.ActiveDocument.CommandAction.Zoom("E", null, null);

  vdFramedControl.BaseControl.ActiveDocument.CommandAction.Zoom("S", (double)0.8, null);

  MessageBox.Show("Circles with the right extrusion VectorDraw created. Adding some thickness to the circles just to show the results");

  circle_SP.Thickness = 0.8;

  circle_EP.Thickness = 0.8;

  vdFramedControl.BaseControl.ActiveDocument.Redraw(false);

}

三. 顯示框架控件，如Scrollable或類似vdBase控件

問：我如何使用vdFramed控件但顯示它像vdScrollable控件或類似vdBase控件？

答：您可以使用以下代碼：

Private Sub btn_ShowAsFramed_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ShowAsFramed.Click
    '//Show PropertyGrid and Status Bar
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.CommandLine, True)
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.PropertyGrid, True)
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.StatusBar, True)
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.LayoutTab, True)
    '//Show scrollbars
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.HorizodalScroll, True)
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.VericalScroll, True)
    '//Show the Layout Tab
    VdFramedControl1.ScrollableControl.SetShowLayoutTab(True)
    '//if you set the vdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.StatusBar ,true)
    '// then you show some "features" like :
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.ProgressBar, True)
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.SnapButton, True)
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.Menu, True)
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.GridButton, True)
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.Paper, True)
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.OrthoButton, True)
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.OsnapButton, True)
    '// show the menu
    VdFramedControl1.ShowMenu(True)

    '// In the vdFramed's PropertyGrid the selection is show. This code below finds the selection and 
    '// set this to be shown in the Property Grid
    Dim propertygrid As vdPropertyGrid.vdPropertyGrid
    propertygrid = VdFramedControl1.vdGrid
    propertygrid.SelectedObject = VdFramedControl1.BaseControl.ActiveDocument ' set the default value
    '// Here we find the name of the Grip Selection
    Dim gripset As VectorDraw.Professional.vdCollections.vdSelection
    Dim selsetname As String = "VDGRIPSET_" + VdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.Handle.ToStringValue()
    If Not VdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.ActiveViewPort Is Nothing Then
        selsetname = selsetname + VdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.ActiveViewPort.Handle.ToStringValue()
    End If

    '// This is the Grip Selections that is show in the PropertyGrid
    gripset = VdFramedControl1.BaseControl.ActiveDocument.ActiveLayOut.Document.Selections.FindName(selsetname)
    If Not (gripset Is Nothing) Then
        If gripset.Count > 0 Then propertygrid.SelectedObject = gripset
    End If
End Sub

Private Sub btn_ShowAsScrollable_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ShowAsScrollable.Click
    '//Hide PropertyGrid, CommandLine and Status Bar
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.CommandLine, False)
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.PropertyGrid, False)
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.StatusBar, False)
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.LayoutTab, True)
    '//Show scrollbars
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.HorizodalScroll, True)
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.VericalScroll, True)
    '//Show the Layout Tab
    VdFramedControl1.ScrollableControl.SetShowLayoutTab(True)
    '//if you set the vdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.StatusBar ,true)
    '// then you can hide some "features" like :
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.ProgressBar, False)
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.SnapButton, False)
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.Menu, False
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.GridButton, False)
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.Paper, False)
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.OrthoButton, False)
    VdFramedControl1.SetStatusBarOption(vdControls.vdFramedControl.StatusBarOptions.OsnapButton, False)
    '// Hide the Menu
    VdFramedControl1.ShowMenu(False)
End Sub

Private Sub btn_ShowAsBase_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ShowAsBase.Click
    '//Hide PropertyGrid, commandLine, Layout tab and Status Bar
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.CommandLine, False)
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.PropertyGrid, False)
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.StatusBar, False)
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.LayoutTab, False)
    '//Hide scrollbars
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.HorizodalScroll, False)
    VdFramedControl1.SetLayoutStyle(vdControls.vdFramedControl.LayoutStyle.VericalScroll, False)
    '//Hide the Layout Tab
    VdFramedControl1.ScrollableControl.SetShowLayoutTab(False)
    VdFramedControl1.ScrollableControl.SetShowVscroll(False)
    VdFramedControl1.ScrollableControl.SetShowVscroll(False)
End Sub

四. Vertexes的IsClockWise屬性

問：可以在頂點(diǎn)中添加IsClockWise屬性嗎？凸起也不會(huì)在“頂點(diǎn)區(qū)域”中計(jì)算。

答：“頂點(diǎn)區(qū)域”僅針對(duì)2D點(diǎn)計(jì)算，沒有凸起。此外，無法應(yīng)用IsClockWise，因?yàn)轫旤c(diǎn)不像vdPolyline那樣具有ECS矩陣。因此，為了獲得Vertexes的區(qū)域，如果是時(shí)鐘方式，則必須使用如下代碼：

VectorDraw.Professional.vdFigures.vdPolyline poly = new VectorDraw.Professional.vdFigures.vdPolyline（）;
poly.SetUnRegisterDocument（vdFramedControl.BaseControl.ActiveDocument）;
poly.SetDocumentDefaults（）;
poly.VertexList = new VectorDraw.Geometry.Vertexes（myVertexes）;
poly.Update（）;
double myArea = poly.Area（）;
bool isClockW = poly.IsClockWise（）;

未完待續(xù)......