SharpDX DirectWrite旋转文本

Question

我想知道如何旋转使用Direct2D和SharpDX呈现的文本。

找不到任何可能性

RenderTarget2D.DrawText()

或

RenderTarget2D.DrawTextLayout()

Answer 1

您可以使用一个Transformation Matrix，更准确地说，是一个通过3x2矩阵的旋转变换。

伪示例：

RenderTarget2D.BeginDraw;
try
  // your regular drawings
  ....

  // save the current tranform
  currentTransform = RenderTarget2D.GetTransform;

  // set a 90 degree rotation around the (100,100);
  RenderTarget2D.SetTransform(Matrix3x2F.Rotation(90, Point2F(100,100))); 

  // do your rotated text drawings
  RenderTarget2D.DrawText();

  // restore your previous/original transform
  RenderTarget2D.SetTransform(currentTransform);
finally
  RenderTarget2D.EndDraw;
end;