Re: Problem with Grouping the rotated object.

Wed, 02 Apr 2008 09:02:43 -0700 


On Apr 2, 2008, at 04:00, Ghufran Ahamad wrote:


NSAffineTransform* xform = [NSAffineTransform transform];

[currentContext saveGraphicsState];

[NSBezierPath clipRect:drawingBounds];

NSPoint center = NSMakePoint(NSMidX(stRect), NSMidY(stRect));

[xform translateXBy:center.x yBy:center.y];

[xform rotateByDegrees:[curGraphic GetAngle]];

[xform translateXBy:-center.x yBy:-center.y];

[xform concat];


This looks kind of wrong. Mathematically, wouldn't you want:

        [xform translateXBy:-center.x yBy:-center.y];
        [xform rotateByDegrees:[curGraphic GetAngle]];
        [xform translateXBy:center.x yBy:center.y];

?


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