Region.Intersect 方法

定义

命名空间:

System.Drawing

程序集:

System.Drawing.Common.dll

包:

System.Drawing.Common v9.0.0-preview.6.24327.6

将此 Region 更新为自身与指定 Region的交集。

重载

Intersect(GraphicsPath)	将此 Region 更新为自身与指定 GraphicsPath的交集。
Intersect(Rectangle)	将此 Region 更新为自身与指定 Rectangle 结构的交集。
Intersect(RectangleF)	将此 Region 更新为自身与指定 RectangleF 结构的交集。
Intersect(Region)	将此 Region 更新为自身与指定 Region的交集。

Intersect(GraphicsPath)

Source:

Region.cs

将此 Region 更新为自身与指定 GraphicsPath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 更新为自身与指定 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 更新为自身与指定 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

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数。 该代码执行以下操作：

• 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。

请注意，只有区域和矩形的重叠区域为蓝色。

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

将此 Region 更新为自身与指定 Region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.