文档彩票走势图>>VectorDraw教程>>新手入门必看：VectorDraw 常见问题整理大全（十一）
新手入门必看：VectorDraw 常见问题整理大全（十一）
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. 在命令（或操作）处于活动状态时显示实体的工具提示
问：我想在命令（或动作）处于活动状态时显示光标下的实体工具提示。我怎样才能做到这一点 ？
答：默认情况下，在GetUserPoint等操作或活动命令期间无法显示工具提示。这也是着名的CAD应用程序的默认行为，如果将其添加到VDF默认行为，则可能会出现两个问题。
- 隐藏工具提示区域下方的有用信息（端点，快照等），
- 作为Osnaps减慢性能，除了绘图数据库搜索必须在工具提示窗口内绘制的文本之外，还必须计算交叉点蚀刻。
为此，我们无法在组件中添加此行为。如果您愿意，可以使用ActiveDocument.ActionLayout.GetEntifromPoint（使用布尔值更快的响应）或GetTooltipFigure，并获取光标下方图形的工具提示文本，并将其设置为文档的ToolTipText属性。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. 在垂直于线的平面中的线起点和终点创建2个圆
问：如何在垂直于线的平面中的线起点和终点创建2个圆？
答：试试如下代码：
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. 显示框架控件，如Scrollable或类似vdBase控件
问：我如何使用vdFramed控件但显示它像vdScrollable控件或类似vdBase控件？
答：您可以使用以下代码：
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属性
问：可以在顶点中添加IsClockWise属性吗？凸起也不会在“顶点区域”中计算。
答：“顶点区域”仅针对2D点计算，没有凸起。此外，无法应用IsClockWise，因为顶点不像vdPolyline那样具有ECS矩阵。因此，为了获得Vertexes的区域，如果是时钟方式，则必须使用如下代码：
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（）;
未完待续......
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