private void RotateImage(double deltaAngle)
{
Point mouse = Mouse.GetPosition(ImagePanel);
Point origin = TransGroup.Transform(mouse);
RotateTrans.Angle += deltaAngle;
// 位移补偿
Point alter = TransGroup.Transform(mouse);
TranslateImage(origin.X - alter.X, origin.Y - alter.Y);
}
private void ScaleImage(double deltaMultiple)
{
Point mouse = Mouse.GetPosition(ImagePanel);
Point origin = TransGroup.Transform(mouse);
ScaleTrans.ScaleX += deltaMultiple;
ScaleTrans.ScaleY += deltaMultiple;
// 位移补偿
Point alter = TransGroup.Transform(mouse);
TranslateImage(origin.X - alter.X, origin.Y - alter.Y);
}