Home » U++ Library support » Draw, Display, Images, Bitmaps, Icons » Painter and transformations
| Re: Painter and transformations [message #38852 is a reply to message #38851] |
Thu, 24 January 2013 09:17   |
mdelfede
Messages: 1308
Registered: September 2007
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Ultimate Contributor |
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Well, the purpose is :
1- Move te origin to 'center' point, aka have point (0,0) at 'center' point
2- Rotate the reference 45° AROUND CENTER
3- Move reference again to be on ImageCtrl center
4- Draw stuffs
5- Undo the transformation
That should (IMHO...) be done with
Translate(-center).Rotate(-angle).Translate(imagecenter)
So, maybe I understand Painter transformations wrong, but I still don't know how to have the thing to what I want 
Even more, if I remove the Rotate part it behaves as expected, so I guess that the problem (mine or Painter's one) it's the rotation center point.
BTW, you're right, I'm reversing the product's order in transformation matrices, but the weird is that if I do it right it doesn't work either....
Max
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