RectangleF.Intersect 方法

定义

命名空间:

System.Drawing

程序集:

System.Drawing.Primitives.dll

确定表示两个矩形交集的 RectangleF 结构。

重载

Intersect(RectangleF)	将此 RectangleF 结构替换为自身的交集和指定的 RectangleF 结构。
Intersect(RectangleF, RectangleF)	返回一个 RectangleF 结构，该结构表示两个矩形的交集。 如果没有交集，则返回空 RectangleF。

Intersect(RectangleF)

Source:

RectangleF.cs

将此 RectangleF 结构替换为自身的交集和指定的 RectangleF 结构。

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

要相交的矩形。

Intersect(RectangleF, RectangleF)

Source:

RectangleF.cs

返回一个 RectangleF 结构，该结构表示两个矩形的交集。 如果没有交集，则返回空 RectangleF。

public:
 static System::Drawing::RectangleF Intersect(System::Drawing::RectangleF a, System::Drawing::RectangleF b);

public static System.Drawing.RectangleF Intersect (System.Drawing.RectangleF a, System.Drawing.RectangleF b);

static member Intersect : System.Drawing.RectangleF * System.Drawing.RectangleF -> System.Drawing.RectangleF

Public Shared Function Intersect (a As RectangleF, b As RectangleF) As RectangleF

参数

a

RectangleF

要相交的矩形。

b

RectangleF

要相交的矩形。

返回

RectangleF

第三个 RectangleF 结构，其大小表示两个指定矩形的重叠区域。

示例

此示例旨在与 Windows 窗体一起使用，它需要 PaintEventArgseOnPaint 事件对象。 该代码创建两个 RectangleF 对象，并用黑色和红色将其绘制到屏幕。 请注意，它们必须转换为 Rectangle 对象以进行绘制。 然后，该代码使用 Intersect 方法创建第三个 RectangleF，将其转换为 Rectangle，并将其绘制为蓝色屏幕。 请注意，第三个（蓝色）矩形是其他两个矩形重叠的区域：

public:
   void RectangleFIntersectExample( PaintEventArgs^ e )
   {
      // Create two rectangles.
      RectangleF firstRectangleF = RectangleF(0,0,75,50);
      RectangleF secondRectangleF = RectangleF(50,20,50,50);

      // Convert the RectangleF structures to Rectangle structures and draw them to the
      // screen.
      Rectangle firstRect = Rectangle::Truncate( firstRectangleF );
      Rectangle secondRect = Rectangle::Truncate( secondRectangleF );
      e->Graphics->DrawRectangle( Pens::Black, firstRect );
      e->Graphics->DrawRectangle( Pens::Red, secondRect );

      // Get the intersection.
      RectangleF intersectRectangleF = RectangleF::Intersect( firstRectangleF, secondRectangleF );

      // Draw the intersectRectangleF to the screen.
      Rectangle intersectRect = Rectangle::Truncate( intersectRectangleF );
      e->Graphics->DrawRectangle( Pens::Blue, intersectRect );
   }

public void RectangleFIntersectExample(PaintEventArgs e)
{
             
    // Create two rectangles.
    RectangleF firstRectangleF = new RectangleF(0, 0, 75, 50);
    RectangleF secondRectangleF = new RectangleF(50, 20, 50, 50);
             
    // Convert the RectangleF structures to Rectangle structures and draw them to the
             
    // screen.
    Rectangle firstRect = Rectangle.Truncate(firstRectangleF);
    Rectangle secondRect = Rectangle.Truncate(secondRectangleF);
    e.Graphics.DrawRectangle(Pens.Black, firstRect);
    e.Graphics.DrawRectangle(Pens.Red, secondRect);
             
    // Get the intersection.
    RectangleF intersectRectangleF =
        RectangleF.Intersect(firstRectangleF,
        secondRectangleF);
             
    // Draw the intersectRectangleF to the screen.
    Rectangle intersectRect =
        Rectangle.Truncate(intersectRectangleF);
    e.Graphics.DrawRectangle(Pens.Blue, intersectRect);
}

Public Sub RectangleFIntersectExample(ByVal e As PaintEventArgs)

    ' Create two rectangles.
    Dim firstRectangleF As New RectangleF(0, 0, 75, 50)
    Dim secondRectangleF As New RectangleF(50, 20, 50, 50)

    ' Convert the RectangleF structures to Rectangle structures and

    ' draw them to the screen.
    Dim firstRect As Rectangle = Rectangle.Truncate(firstRectangleF)
    Dim secondRect As Rectangle = Rectangle.Truncate(secondRectangleF)
    e.Graphics.DrawRectangle(Pens.Black, firstRect)
    e.Graphics.DrawRectangle(Pens.Red, secondRect)

    ' Get the intersection.
    Dim intersectRectangleF As RectangleF = _
    RectangleF.Intersect(firstRectangleF, secondRectangleF)

    ' Draw the intersectRectangleF to the screen.
    Dim intersectRect As Rectangle = _
    Rectangle.Truncate(intersectRectangleF)
    e.Graphics.DrawRectangle(Pens.Blue, intersectRect)
End Sub