PathGradientBrush.MultiplyTransform 方法
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
藉由在前面加上指定的 Matrix,將表示這個 PathGradientBrush 的局部幾何轉換的 Matrix 乘以指定的 Matrix。
多載
MultiplyTransform(Matrix) |
使用筆刷轉換矩陣乘以其他矩陣的乘積來更新筆刷的轉換矩陣。 |
MultiplyTransform(Matrix, MatrixOrder) |
使用筆刷轉換矩陣乘以其他矩陣的乘積來更新筆刷的轉換矩陣。 |
MultiplyTransform(Matrix)
使用筆刷轉換矩陣乘以其他矩陣的乘積來更新筆刷的轉換矩陣。
public:
void MultiplyTransform(System::Drawing::Drawing2D::Matrix ^ matrix);
public void MultiplyTransform (System.Drawing.Drawing2D.Matrix matrix);
member this.MultiplyTransform : System.Drawing.Drawing2D.Matrix -> unit
Public Sub MultiplyTransform (matrix As Matrix)
參數
範例
如需範例,請參閱 MultiplyTransform。
適用於
MultiplyTransform(Matrix, MatrixOrder)
使用筆刷轉換矩陣乘以其他矩陣的乘積來更新筆刷的轉換矩陣。
public:
void MultiplyTransform(System::Drawing::Drawing2D::Matrix ^ matrix, System::Drawing::Drawing2D::MatrixOrder order);
public void MultiplyTransform (System.Drawing.Drawing2D.Matrix matrix, System.Drawing.Drawing2D.MatrixOrder order);
member this.MultiplyTransform : System.Drawing.Drawing2D.Matrix * System.Drawing.Drawing2D.MatrixOrder -> unit
Public Sub MultiplyTransform (matrix As Matrix, order As MatrixOrder)
參數
- order
- MatrixOrder
MatrixOrder,指定兩個矩陣相乘所依據的順序。
範例
下列程式代碼範例是設計來搭配 Windows Forms 使用,而且需要 PaintEventArgse
事件OnPaint物件。 此程式碼會執行下列動作:
建立圖形路徑,並將矩形加入其中。
PathGradientBrush在此範例中,從路徑點 (建立 ,這些點會形成矩形,但可能是任何圖形) 。
將中央色彩設定為紅色,並將周圍色彩設定為藍色。
在 PathGradientBrush 套用乘積轉換之前,先將 繪製到畫面。
建立矩陣,以旋轉筆刷 90 度,並在兩個軸中以 100 轉譯。
使用 MultiplyTransform 方法將此矩陣套用至筆刷。
將筆刷繪製到畫面。
public:
void MultiplyTransformExample( PaintEventArgs^ e )
{
// Create a graphics path and add an rectangle.
GraphicsPath^ myPath = gcnew GraphicsPath;
Rectangle rect = Rectangle(20,20,100,50);
myPath->AddRectangle( rect );
// Get the path's array of points.
array<PointF>^myPathPointArray = myPath->PathPoints;
// Create a path gradient brush.
PathGradientBrush^ myPGBrush = gcnew PathGradientBrush( myPathPointArray );
// Set the color span.
myPGBrush->CenterColor = Color::Red;
array<Color>^ mySurroundColor = {Color::Blue};
myPGBrush->SurroundColors = mySurroundColor;
// Draw the brush to the screen prior to transformation.
e->Graphics->FillRectangle( myPGBrush, 10, 10, 200, 200 );
// Create a new matrix that rotates by 90 degrees, and
// translates by 100 in each direction.
Matrix^ myMatrix = gcnew Matrix( 0,1,-1,0,100,100 );
// Apply the transform to the brush.
myPGBrush->MultiplyTransform( myMatrix, MatrixOrder::Append );
// Draw the brush to the screen again after applying the
// transform.
e->Graphics->FillRectangle( myPGBrush, 10, 10, 200, 300 );
}
public void MultiplyTransformExample(PaintEventArgs e)
{
// Create a graphics path and add an rectangle.
GraphicsPath myPath = new GraphicsPath();
Rectangle rect = new Rectangle(20, 20, 100, 50);
myPath.AddRectangle(rect);
// Get the path's array of points.
PointF[] myPathPointArray = myPath.PathPoints;
// Create a path gradient brush.
PathGradientBrush myPGBrush = new
PathGradientBrush(myPathPointArray);
// Set the color span.
myPGBrush.CenterColor = Color.Red;
Color[] mySurroundColor = {Color.Blue};
myPGBrush.SurroundColors = mySurroundColor;
// Draw the brush to the screen prior to transformation.
e.Graphics.FillRectangle(myPGBrush, 10, 10, 200, 200);
// Create a new matrix that rotates by 90 degrees, and
// translates by 100 in each direction.
Matrix myMatrix = new Matrix(0, 1, -1, 0, 100, 100);
// Apply the transform to the brush.
myPGBrush.MultiplyTransform(myMatrix, MatrixOrder.Append);
// Draw the brush to the screen again after applying the
// transform.
e.Graphics.FillRectangle(myPGBrush, 10, 10, 200, 300);
}
Public Sub MultiplyTransformExample(ByVal e As PaintEventArgs)
' Create a graphics path and add a rectangle.
Dim myPath As New GraphicsPath
Dim rect As New Rectangle(20, 20, 100, 50)
myPath.AddRectangle(rect)
' Get the path's array of points.
Dim myPathPointArray As PointF() = myPath.PathPoints
' Create a path gradient brush.
Dim myPGBrush As New PathGradientBrush(myPathPointArray)
' Set the color span.
myPGBrush.CenterColor = Color.Red
Dim mySurroundColor As Color() = {Color.Blue}
myPGBrush.SurroundColors = mySurroundColor
' Draw the brush to the screen prior to transformation.
e.Graphics.FillRectangle(myPGBrush, 10, 10, 200, 200)
' Create a new matrix that rotates by 90 degrees, and
' translates by 100 in each direction.
Dim myMatrix As New Matrix(0, 1, -1, 0, 100, 100)
' Apply the transform to the brush.
myPGBrush.MultiplyTransform(myMatrix, MatrixOrder.Append)
' Draw the brush to the screen again after applying the
' transform.
e.Graphics.FillRectangle(myPGBrush, 10, 10, 200, 300)
End Sub
適用於
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