Matrix.RotateAt(Double, Double, Double)
Matrix.RotateAt(Double, Double, Double)
Matrix.RotateAt(Double, Double, Double)
Matrix.RotateAt(Double, Double, Double)
Method
定義
繞著指定的點旋轉這個矩陣。Rotates this matrix about the specified point.
public:
void RotateAt(double angle, double centerX, double centerY);public void RotateAt (double angle, double centerX, double centerY);member this.RotateAt : double * double * double -> unitPublic Sub RotateAt (angle As Double, centerX As Double, centerY As Double)參數
這個矩陣的旋轉角度 (以度數為單位)。The angle, in degrees, by which to rotate this matrix.
這個矩陣的旋轉中心點 X 座標。The x-coordinate of the point about which to rotate this matrix.
這個矩陣的旋轉中心點 Y 座標。The y-coordinate of the point about which to rotate this matrix.
範例
下列範例顯示如何旋轉關於指定點Matrix的。The following example shows how to rotate a Matrix about a specified point.
private Matrix rotateAboutPointExample()
{
// Creating a Matrix structure.
Matrix myMatrix = new Matrix(5, 10, 15, 20, 25, 30);
// Rotate the matrix 90 degrees about the point (100,100).
// myMatrix becomes equal to (-10, 4, -20, 15, 170, 25).
myMatrix.RotateAt(90, 100, 100);
return myMatrix;
}