Re: Rotate NSString... I give up :(
Re: Rotate NSString... I give up :(
- Subject: Re: Rotate NSString... I give up :(
- From: "Vitaly Ovchinnikov" <email@hidden>
- Date: Wed, 6 Aug 2008 12:46:48 +0400
Will test this too, but I don't think it will work.
In my case I moved rectangle from it's real position to zero, then
rotate around zero and then moved back.
In your case I will move it far from zero and then rotate...
But I will give it a try.
On Wed, Aug 6, 2008 at 11:20 AM, Jean-Daniel Dupas
<email@hidden> wrote:
> Shouldn't be this instead (check the translations' signs) ?
>
> [tr translateXBy:dx yBy:dy]; // center or rect will be the center of
> rotation
> [tr rotateByDegrees:90]; // rotate it
> [tr translateXBy:-dx yBy:-dy]; // move it back
>
>
> Le 6 août 08 à 08:46, Vitaly Ovchinnikov a écrit :
>
>> Hello,
>>
>> I need to draw NSString rotated to 90 degrees. Now I have the code:
>>
>> NSRect rcWhereToDraw = NSMakeRect(........); // <- rect is already
>> "rotated" here
>> [str drawInRect:rcWhereToDraw withAttributes:attributes]; // string
>> will be drawn non-rotated
>>
>> as far as I know, I need something like this:
>>
>> [[NSGraphicsContext currentContext] saveGraphicsState];
>> NSRect rcWhereToDraw = NSMakeRect(........);
>>
>> float dx = NSMidX(rcWhereToDraw), dy = NSMidY(rcWhereToDraw);
>>
>> NSAffineTransform *tr = [NSAffineTransform transform];
>> [tr translateXBy:-dx yBy:-dy]; // center or rect will be the center of
>> rotation
>> [tr rotateByDegrees:90]; // rotate it
>> [tr translateXBy:dx yBy:dy]; // move it back
>> [tr concat];
>>
>> [str drawInRect:rcWhereToDraw withAttributes:attributes];
>> [[NSGraphicsContext currentContext] restoreGraphicsState];
>>
>> This doesn't work, where am I wrong?
>> Thank you.
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