Region.Intersect 方法

定义

命名空间:

System.Drawing

程序集:

System.Drawing.Common.dll

包:

System.Drawing.Common v8.0.0

通过指定的 Region，将此 Region 更新为其自身的交集。

重载

Intersect(GraphicsPath)	通过指定的 GraphicsPath，将此 Region 更新为其自身的交集。
Intersect(Rectangle)	将此 Region 更新为其自身与指定的 Rectangle 结构的交集。
Intersect(RectangleF)	将此 Region 更新为其自身与指定的 RectangleF 结构的交集。
Intersect(Region)	通过指定的 Region，将此 Region 更新为其自身的交集。

Intersect(GraphicsPath)

Source:

Region.cs

通过指定的 GraphicsPath，将此 Region 更新为其自身的交集。

public:
 void Intersect(System::Drawing::Drawing2D::GraphicsPath ^ path);

public void Intersect (System.Drawing.Drawing2D.GraphicsPath path);

member this.Intersect : System.Drawing.Drawing2D.GraphicsPath -> unit

Public Sub Intersect (path As GraphicsPath)

参数

path

GraphicsPath

要与此 Region 相交的 GraphicsPath。

示例

有关代码示例，请参阅 RectangleF.Intersect(RectangleF) 和 Complement(GraphicsPath) 方法。

Intersect(Rectangle)

Source:

Region.cs

将此 Region 更新为其自身与指定的 Rectangle 结构的交集。

public:
 void Intersect(System::Drawing::Rectangle rect);

public void Intersect (System.Drawing.Rectangle rect);

member this.Intersect : System.Drawing.Rectangle -> unit

Public Sub Intersect (rect As Rectangle)

参数

rect

Rectangle

要与此 Region 相交的 Rectangle 结构。

示例

有关代码示例，请参阅 Intersect(RectangleF) 方法。

Intersect(RectangleF)

Source:

Region.cs

将此 Region 更新为其自身与指定的 RectangleF 结构的交集。

public:
 void Intersect(System::Drawing::RectangleF rect);

public void Intersect (System.Drawing.RectangleF rect);

member this.Intersect : System.Drawing.RectangleF -> unit

Public Sub Intersect (rect As RectangleF)

参数

rect

RectangleF

要与此 Region 相交的 RectangleF 结构。

示例

下面的代码示例旨在与 Windows 窗体 一起使用，它需要 PaintEventArgse，这是事件处理程序的参数Paint。 此代码执行以下操作：

• 创建第一个矩形并将其绘制到黑色屏幕。

• 创建第二个矩形并将其绘制到红色屏幕。

• 从第一个矩形创建区域。

• 获取与第二个矩形组合时区域的交集区域。

• 用蓝色填充交集区域，并将其绘制到屏幕上。

请注意，只有区域和矩形的重叠区域是蓝色的。

public:
   void Intersect_RectF_Example( PaintEventArgs^ e )
   {
      // Create the first rectangle and draw it to the screen in black.
      Rectangle regionRect = Rectangle(20,20,100,100);
      e->Graphics->DrawRectangle( Pens::Black, regionRect );

      // create the second rectangle and draw it to the screen in red.
      RectangleF complementRect = RectangleF(90,30,100,100);
      e->Graphics->DrawRectangle( Pens::Red, Rectangle::Round( complementRect ) );

      // Create a region using the first rectangle.
      System::Drawing::Region^ myRegion = gcnew System::Drawing::Region( regionRect );

      // Get the area of intersection for myRegion when combined with
      // complementRect.
      myRegion->Intersect( complementRect );

      // Fill the intersection area of myRegion with blue.
      SolidBrush^ myBrush = gcnew SolidBrush( Color::Blue );
      e->Graphics->FillRegion( myBrush, myRegion );
   }

public void Intersect_RectF_Example(PaintEventArgs e)
{
             
    // Create the first rectangle and draw it to the screen in black.
    Rectangle regionRect = new Rectangle(20, 20, 100, 100);
    e.Graphics.DrawRectangle(Pens.Black, regionRect);
             
    // create the second rectangle and draw it to the screen in red.
    RectangleF complementRect = new RectangleF(90, 30, 100, 100);
    e.Graphics.DrawRectangle(Pens.Red,
        Rectangle.Round(complementRect));
             
    // Create a region using the first rectangle.
    Region myRegion = new Region(regionRect);
             
    // Get the area of intersection for myRegion when combined with
             
    // complementRect.
    myRegion.Intersect(complementRect);
             
    // Fill the intersection area of myRegion with blue.
    SolidBrush myBrush = new SolidBrush(Color.Blue);
    e.Graphics.FillRegion(myBrush, myRegion);
}

Public Sub Intersect_RectF_Example(ByVal e As PaintEventArgs)

    ' Create the first rectangle and draw it to the screen in black.
    Dim regionRect As New Rectangle(20, 20, 100, 100)
    e.Graphics.DrawRectangle(Pens.Black, regionRect)

    ' create the second rectangle and draw it to the screen in red.
    Dim complementRect As New RectangleF(90, 30, 100, 100)
    e.Graphics.DrawRectangle(Pens.Red, _
    Rectangle.Round(complementRect))

    ' Create a region using the first rectangle.
    Dim myRegion As New [Region](regionRect)

    ' Get the area of intersection for myRegion when combined with
    ' complementRect.
    myRegion.Intersect(complementRect)

    ' Fill the intersection area of myRegion with blue.
    Dim myBrush As New SolidBrush(Color.Blue)
    e.Graphics.FillRegion(myBrush, myRegion)
End Sub

Intersect(Region)

Source:

Region.cs

通过指定的 Region，将此 Region 更新为其自身的交集。

public:
 void Intersect(System::Drawing::Region ^ region);

public void Intersect (System.Drawing.Region region);

member this.Intersect : System.Drawing.Region -> unit

Public Sub Intersect (region As Region)

参数

region

Region

要与此 Region 相交的 Region。

示例

有关代码示例，请参阅 Intersect(RectangleF) 和 Complement(GraphicsPath) 方法.