Sunset Lake Software - Comments for "How to make Filter animations?"

Brad Larson wrote:There

Brad Larson wrote:

There really isn't an easy way to animate the filters right now...

Is this the same problem of: http://www.sunsetlakesoftware.com/forum/update-filtered-image ?

Thanks

There really isn't an easy

There really isn't an easy way to animate the filters right now. The best approach would be to create a GPUImagePicture from your source UIImage, set up a filter for that, and then attach that filter to a GPUImageView for display. Every time a timer would fire, adjust the parameters of the filter appropriately and call -processImage on the picture source.

I suppose a generic animator proxy could be set up for the filters like NSView has for animation, but I don't have anything in the framework that does this right now.

I have exactly the same

I have exactly the same question. I know about how to drive UIView animations with the simple block APIs, and how to work with CA layer animations (e.g for animating shape layers). Could this be done with CA keyframe animations, or do we need to use something different?

I suppose a bruteforce approach would be to drive the animation with a NSTimer and just adjust the parameters from the timer callback, but this means I’d have to calculate all the curves and such stuff myself. Maybe there is a more elegant approach?

So a specific example that both the OP and me would like to do, is to have a UIImageView, and then adjust the blur of its UIImage over a period of time.