PathGradientBrush.ScaleTransform 方法
定義
重要
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將局部幾何變換縮放至指定量。 此方法在變換前加上縮放矩陣。
多載
| 名稱 | Description |
|---|---|
| ScaleTransform(Single, Single) |
將局部幾何變換縮放至指定量。 此方法在變換前加上縮放矩陣。 |
| ScaleTransform(Single, Single, MatrixOrder) |
以指定數量和指定順序縮放局部幾何變換。 |
ScaleTransform(Single, Single)
將局部幾何變換縮放至指定量。 此方法在變換前加上縮放矩陣。
public:
void ScaleTransform(float sx, float sy);public void ScaleTransform(float sx, float sy);member this.ScaleTransform : single * single -> unitPublic Sub ScaleTransform (sx As Single, sy As Single)參數
- sx
- Single
轉換尺度因子在 x 軸方向上。
- sy
- Single
變換尺度因子在 y 軸方向。
範例
如需範例，請參閱 ScaleTransform。
適用於
ScaleTransform(Single, Single, MatrixOrder)
以指定數量和指定順序縮放局部幾何變換。
public:
void ScaleTransform(float sx, float sy, System::Drawing::Drawing2D::MatrixOrder order);public void ScaleTransform(float sx, float sy, System.Drawing.Drawing2D.MatrixOrder order);member this.ScaleTransform : single * single * System.Drawing.Drawing2D.MatrixOrder -> unitPublic Sub ScaleTransform (sx As Single, sy As Single, order As MatrixOrder)參數
- sx
- Single
轉換尺度因子在 x 軸方向上。
- sy
- Single
變換尺度因子在 y 軸方向。
- order
- MatrixOrder
一個 MatrixOrder 指定要加或加疊縮放矩陣的符號。
範例
以下程式碼範例是為 Windows Forms 設計，並需要 PaintEventArgse，一個 OnPaint 事件物件。 程式碼
建立圖形路徑並加入一個矩形。
從路徑點（在此例中，點形成矩形，但幾乎可以是任何形狀）建立 a PathGradientBrush 。
將中心顏色設為紅色，周圍顏色設為藍色。
在套用縮尺轉換前，先 PathGradientBrush 將 畫到 螢幕上。
用它 ScaleTransform 的方法套用比例轉換到筆刷上。
呼叫 TranslateTransform 移動畫筆矩形的方法，使其不會覆蓋先前繪製到螢幕上的長方形。
將平移的筆刷矩形畫到螢幕上。
注意底部矩形在 x 軸上的長度是平移前繪製矩形的兩倍。
public:
void ScaleTransformExample( PaintEventArgs^ e )
{
// Create a graphics path and add a rectangle.
GraphicsPath^ myPath = gcnew GraphicsPath;
Rectangle rect = Rectangle(100,20,100,50);
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 );
// Scale by a factor of 2 in the x-axis by applying the scale
// transform to the brush.
myPGBrush->ScaleTransform( 2, 1, MatrixOrder::Append );
// Move the brush down by 100 by Applying the translate
// transform to the brush.
myPGBrush->TranslateTransform( -100, 100, MatrixOrder::Append );
// Draw the brush to the screen again after applying the
// transforms.
e->Graphics->FillRectangle( myPGBrush, 10, 10, 300, 300 );
}
public void ScaleTransformExample(PaintEventArgs e)
{
// Create a graphics path and add a rectangle.
GraphicsPath myPath = new GraphicsPath();
Rectangle rect = new Rectangle(100, 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);
// Scale by a factor of 2 in the x-axis by applying the scale
// transform to the brush.
myPGBrush.ScaleTransform(2, 1, MatrixOrder.Append);
// Move the brush down by 100 by Applying the translate
// transform to the brush.
myPGBrush.TranslateTransform(-100, 100, MatrixOrder.Append);
// Draw the brush to the screen again after applying the
// transforms.
e.Graphics.FillRectangle(myPGBrush, 10, 10, 300, 300);
}
Public Sub ScaleTransformExample(ByVal e As PaintEventArgs)
' Create a graphics path and add a rectangle.
Dim myPath As New GraphicsPath
Dim rect As New Rectangle(100, 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)
' Scale by a factor of 2 in the x-axis by applying the scale
' transform to the brush.
myPGBrush.ScaleTransform(2, 1, MatrixOrder.Append)
' Move the brush down by 100 by Applying the translate
' transform to the brush.
myPGBrush.TranslateTransform(-100, 100, MatrixOrder.Append)
' Draw the brush to the screen again after applying the
' transforms.
e.Graphics.FillRectangle(myPGBrush, 10, 10, 300, 300)
End Sub
