Rectangle.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 Rectangle 结构。

重载

Intersect(Rectangle, Rectangle)	返回第三个 Rectangle 结构，它表示其他两个 Rectangle 结构的交集。 如果没有重叠，将返回空的 Rectangle。
Intersect(Rectangle)	将此 Rectangle 替换为其自身与指定 Rectangle 的交集。

Intersect(Rectangle, Rectangle)

Source:

Rectangle.cs

返回第三个 Rectangle 结构，它表示其他两个 Rectangle 结构的交集。 如果没有重叠，将返回空的 Rectangle。

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

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

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

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

参数

a

Rectangle

要相交的矩形。

b

Rectangle

要相交的矩形。

返回

Rectangle

表示 a 和 b 的交集的 Rectangle。

示例

下面的代码示例演示 了 Intersect和 IsEmptyIntersectsWith 成员。 此示例应与 Windows 窗体一起使用。 将此代码粘贴到窗体中，并在处理窗体 Paint 的事件时调用此方法，作为 ePaintEventArgs传递。

private:
   void StaticRectangleIntersection( PaintEventArgs^ e )
   {
      Rectangle rectangle1 = Rectangle(50,50,200,100);
      Rectangle rectangle2 = Rectangle(70,20,100,200);
      e->Graphics->DrawRectangle( Pens::Black, rectangle1 );
      e->Graphics->DrawRectangle( Pens::Red, rectangle2 );
      if ( rectangle1.IntersectsWith( rectangle2 ) )
      {
         Rectangle rectangle3 = Rectangle::Intersect( rectangle1, rectangle2 );
         if (  !rectangle3.IsEmpty )
         {
            e->Graphics->FillRectangle( Brushes::Green, rectangle3 );
         }
      }
   }

private void StaticRectangleIntersection(PaintEventArgs e)
{
    Rectangle rectangle1 = new Rectangle(50, 50, 200, 100);
    Rectangle rectangle2 = new Rectangle(70, 20, 100, 200);
    Rectangle rectangle3 = new Rectangle();

    e.Graphics.DrawRectangle(Pens.Black, rectangle1);
    e.Graphics.DrawRectangle(Pens.Red, rectangle2);

    if (rectangle1.IntersectsWith(rectangle2))
    {
        rectangle3 = Rectangle.Intersect(rectangle1, rectangle2);
        if (!rectangle3.IsEmpty)
        {
            e.Graphics.FillRectangle(Brushes.Green, rectangle3);
        }
    }
}

Private Sub StaticRectangleIntersection(ByVal e As PaintEventArgs)
    Dim rectangle1 As New Rectangle(50, 50, 200, 100)
    Dim rectangle2 As New Rectangle(70, 20, 100, 200)
    Dim rectangle3 As New Rectangle

    e.Graphics.DrawRectangle(Pens.Black, rectangle1)
    e.Graphics.DrawRectangle(Pens.Red, rectangle2)

    If (rectangle1.IntersectsWith(rectangle2)) Then
        rectangle3 = Rectangle.Intersect(rectangle1, rectangle2)
        If Not rectangle3.IsEmpty Then
            e.Graphics.FillRectangle(Brushes.Green, rectangle3)
        End If
    End If
End Sub

Intersect(Rectangle)

Source:

Rectangle.cs

将此 Rectangle 替换为其自身与指定 Rectangle 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

用其进行相交操作的 Rectangle。

示例

下面的代码示例演示 了 Intersect和 IsEmptyIntersectsWith 成员。 此示例应与 Windows 窗体一起使用。 将此代码粘贴到窗体中，并在处理窗体 Paint 的事件时调用此方法，作为 ePaintEventArgs传递。

private:
   void InstanceRectangleIntersection( PaintEventArgs^ e )
   {
      Rectangle rectangle1 = Rectangle(50,50,200,100);
      Rectangle rectangle2 = Rectangle(70,20,100,200);
      e->Graphics->DrawRectangle( Pens::Black, rectangle1 );
      e->Graphics->DrawRectangle( Pens::Red, rectangle2 );
      if ( rectangle1.IntersectsWith( rectangle2 ) )
      {
         rectangle1.Intersect( rectangle2 );
         if (  !rectangle1.IsEmpty )
         {
            e->Graphics->FillRectangle( Brushes::Green, rectangle1 );
         }
      }
   }

private void InstanceRectangleIntersection(PaintEventArgs e)
{

    Rectangle rectangle1 = new Rectangle(50, 50, 200, 100);
    Rectangle rectangle2 = new Rectangle(70, 20, 100, 200);

    e.Graphics.DrawRectangle(Pens.Black, rectangle1);
    e.Graphics.DrawRectangle(Pens.Red, rectangle2);

    if (rectangle1.IntersectsWith(rectangle2))
    {
        rectangle1.Intersect(rectangle2);
        if (!rectangle1.IsEmpty)
        {
            e.Graphics.FillRectangle(Brushes.Green, rectangle1);
        }
    }
}

  Private Sub InstanceRectangleIntersection( _
      ByVal e As PaintEventArgs)

      Dim rectangle1 As New Rectangle(50, 50, 200, 100)
      Dim rectangle2 As New Rectangle(70, 20, 100, 200)

      e.Graphics.DrawRectangle(Pens.Black, rectangle1)
      e.Graphics.DrawRectangle(Pens.Red, rectangle2)

      If (rectangle1.IntersectsWith(rectangle2)) Then
          rectangle1.Intersect(rectangle2)
          If Not (rectangle1.IsEmpty) Then
              e.Graphics.FillRectangle(Brushes.Green, rectangle1)
          End If
      End If
  End Sub