Re: CAKeyframeAnimation problem
On Jul 12, 2009, at 2:17 PM, David W. Berry wrote: So the jist of it is that I create a subclass of CAKeyframeAnimation that has a sequence of images in it's values property and a sequence of frame durations in the keyTimes property. I can then add the animation to a layer to display and that's where the problem arises. The first time (and only the first time) the animation is played the first few frames don't display (the movies are short, they only consist of 3-12 frames at 15fps) After the first time I play the animation and it fails, I can play the animation just fine. Please file a bug report on this issue. One work around is to animate the contentsRect property instead of contents and use the contentsRect to select a portion of a single image that is assigned to the contents property of the layer. -- David Duncan Apple DTS Animation and Printing ___ 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
Re: CAKeyframeAnimation problem
The work-around did, indeed, solve the problem I was having with the sequence, they now play correctly from start to stop. If I might prevail upon you with another question, the goal is to trigger a short animation, leaving the last animation frame displayed as a lasting part of the image, right now I have a flicker as the animation is removed and then the underlying view is redrawn with the added image. What's the convenient way to avoid the flickering? David W. Berry d...@greenwing.com 16709 Decker Creek Manor, TX 78653 H: 512 276 1396 M: 512 293 5183 On Jul 13, 2009, at 1:06 PM, David Duncan wrote: On Jul 12, 2009, at 2:17 PM, David W. Berry wrote: So the jist of it is that I create a subclass of CAKeyframeAnimation that has a sequence of images in it's values property and a sequence of frame durations in the keyTimes property. I can then add the animation to a layer to display and that's where the problem arises. The first time (and only the first time) the animation is played the first few frames don't display (the movies are short, they only consist of 3-12 frames at 15fps) After the first time I play the animation and it fails, I can play the animation just fine. Please file a bug report on this issue. One work around is to animate the contentsRect property instead of contents and use the contentsRect to select a portion of a single image that is assigned to the contents property of the layer. -- David Duncan Apple DTS Animation and Printing ___ 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
Re: CAKeyframeAnimation problem
On Jul 13, 2009, at 3:42 PM, David W. Berry wrote: If I might prevail upon you with another question, the goal is to trigger a short animation, leaving the last animation frame displayed as a lasting part of the image, right now I have a flicker as the animation is removed and then the underlying view is redrawn with the added image. What's the convenient way to avoid the flickering? Set the final value of the animation on the layer when you add the animation. You'll want to disable actions when you change the current value of the layer as well. -- David Duncan Apple DTS Animation and Printing ___ 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
