Yes, he right. I've just tested it and it works fine. I though that -translateXBy:yBy: will move my object, but it moved pivot point... This is hard, especially with revesed OY axis ;) Thanks to you and Jean-Daniel.
On Wed, Aug 6, 2008 at 10:19 PM, Steve Christensen <[EMAIL PROTECTED]> wrote: > No, Jean-Daniel's method looks right. The first -translateXBy:yBy: moves (0, > 0) to the center of your text rectangle. -rotateByDegrees: rotates the > coordinate system by 90 degrees around that center point, then the second > call to -translateXBy:yBy: restores the coordinate system's (0, 0) point to > what it was so that when you draw the text in rcWhereToDraw, it will be > correctly rotated. > > > On Aug 6, 2008, at 1:46 AM, Vitaly Ovchinnikov wrote: > >> 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 PROTECTED]> 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. > > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
