C# 旋转并缩放图像笔刷
我可以通过以下方式旋转图像:C# 旋转并缩放图像笔刷,c#,wpf,xaml,C#,Wpf,Xaml,我可以通过以下方式旋转图像: RotateTransform aRotateTransform = new RotateTransform(); aRotateTransform.CenterX = 0.5; aRotateTransform.CenterY = 0.5; tateTransform.Angle = rotationAngle; ImageBrush bgbrush = new ImageBrush(); bgbrush.RelativeTransfor
RotateTransform aRotateTransform = new RotateTransform();
aRotateTransform.CenterX = 0.5;
aRotateTransform.CenterY = 0.5;
tateTransform.Angle = rotationAngle;
ImageBrush bgbrush = new ImageBrush();
bgbrush.RelativeTransform = aRotateTransform;
ScaleTransform s = new ScaleTransform();
s.ScaleX = -1; // how to set without overriding the rotation?
...
此外,我如何扩展它?我尝试使用矩阵,但没有成功 您可以使用a,它将平移、旋转和缩放组合在一个矩阵中。您可以使用a,它将平移、旋转和缩放组合在一个矩阵中。您可以使用类似的:
你可以用这样的方法:
只是为了完整。使用矩阵变换,您将通过以下方式获得预期结果:
var transform = Matrix.Identity;
transform.RotateAt(rotationAngle, 0.5, 0.5);
transform.Scale(-1, 1);
bgbrush.RelativeTransform = new MatrixTransform(transform);
但是,我想实际上您希望保持图像居中,因此可以使用ScaleAt
而不是Scale
:
var transform = Matrix.Identity;
transform.RotateAt(rotationAngle, 0.5, 0.5);
transform.ScaleAt(-1, 1, 0.5, 0.5);
bgBrush.RelativeTransform = new MatrixTransform(transform);
只是为了完整。使用矩阵变换,您将通过以下方式获得预期结果:
var transform = Matrix.Identity;
transform.RotateAt(rotationAngle, 0.5, 0.5);
transform.Scale(-1, 1);
bgbrush.RelativeTransform = new MatrixTransform(transform);
但是,我想实际上您希望保持图像居中,因此可以使用ScaleAt
而不是Scale
:
var transform = Matrix.Identity;
transform.RotateAt(rotationAngle, 0.5, 0.5);
transform.ScaleAt(-1, 1, 0.5, 0.5);
bgBrush.RelativeTransform = new MatrixTransform(transform);
如果您只需要自行旋转
画笔
并在以后将其放入矩形,而无需调整任何其他内容,这对我很有用:
// Get the image from somewhere...
ib = new ImageBrush(bmp);
// Here I get it from a larger texture picture.
ib.Viewbox = this.GetVBRect(1728, 634);
ib.Transform = new RotateTransform()
{
CenterX = 0.5,
CenterY = 0.5,
Angle = 180,
};
ib.TileMode = TileMode.Tile;
如果您只需要自行旋转
画笔
并在以后将其放入矩形,而无需调整任何其他内容,这对我很有用:
// Get the image from somewhere...
ib = new ImageBrush(bmp);
// Here I get it from a larger texture picture.
ib.Viewbox = this.GetVBRect(1728, 634);
ib.Transform = new RotateTransform()
{
CenterX = 0.5,
CenterY = 0.5,
Angle = 180,
};
ib.TileMode = TileMode.Tile;