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BradLarson / GPUImage

An open source iOS framework for GPU-based image and video processing
http://www.sunsetlakesoftware.com/2012/02/12/introducing-gpuimage-framework
BSD 3-Clause "New" or "Revised" License
20.23k stars 4.61k forks source link

How to use fingers to move the GPUImageUIElement? #2292

Closed jirex closed 8 years ago

jirex commented 8 years ago

I am using GPUImage to make a camera app, and I add a GPUImageUIElement to the filter, but I think the GPUImageUIElement was only rendered to the view, it wasn't become the subview of the view. I want to use fingers to move the element, but the userinteraction can't get the element, how can I move the element?

BradLarson commented 8 years ago

My recommendation would be to apply a transform / scale operation on it before passing it into your blend, and have the transformation track finger position.