Sorry, I must have not been clear - these are not before and after curve definitions. They are two approaches I tried. First I was using the curve to approach, and when that wasn't working nicely, I tried the quad curve.
On 07/11/2010, at 11:11 AM, David Duncan wrote: > On Nov 6, 2010, at 4:41 PM, Gideon King wrote: > >> I'm using a CAShapeLayer, and the animation of the shape of the curved path >> I am using is doing really strange things (It seems to work fine on straight >> lines). I have tried: >> >> CGPathMoveToPoint(tempPath, NULL, startPoint.x, startPoint.y); >> CGPathAddQuadCurveToPoint(tempPath, NULL, ctrl1.x, ctrl1.y, midPoint.x, >> midPoint.y); >> CGPathAddQuadCurveToPoint(tempPath, NULL, ctrl2.x, ctrl2.y, endPoint.x, >> endPoint.y); >> >> and: >> >> CGPathMoveToPoint(tempPath, NULL, startPoint.x, startPoint.y); >> CGPathAddCurveToPoint(tempPath, NULL, ctrl1.x, ctrl1.y, ctrl1.x, >> ctrl1.y, midPoint.x, midPoint.y); >> CGPathAddCurveToPoint(tempPath, NULL, ctrl2.x, ctrl2.y, ctrl2.x, >> ctrl2.y, endPoint.x, endPoint.y); > > These two paths are not structurally equivalent is the problem. You should be > able to get something predictable by using AddCurveToPoint in both places, > and to use the same location for both control points (which degenerates a > Cubic curve to a Quadratic one). > -- > David Duncan > _______________________________________________ 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 arch...@mail-archive.com
