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iOS SDK – Confirming behavior of `renderToImage` function

solidcubes

Hi Spine team, I wanted to confirm my understanding of how renderToImage works and if I'm using it correctly.

In my iOS project, I set up a SpineView displaying a full-body avatar, and for one of our animation tracks, we set it up such that once it plays it repositions the avatar (using bones) in such a way that their head fills up the view, while the root bone is left alone as it's the root point.

But when I try to render this view into an image with renderToImage, it seems to lose this repositioning – the image has the avatar is in full-view instead of being "cropped" so their head fills up the view like when playing it normally in the SpineView.

Is this the intended behavior of renderToImage? Or am I missing something? Just want to confirm before diving into my own investigation, and sorry for being vague. Happy to provide more info about our setup if needed.

Spinebot

The behavior you're experiencing with the renderToImage function seems to be related to how the rendering context is set up when capturing the image. When you use renderToImage, it might not be applying the same transformations or view settings that are active during normal playback in the SpineView. This could result in the avatar appearing in full view rather than being cropped as expected.

To address this, ensure that the transformations applied to the avatar during playback are also applied when rendering to an image. This might involve manually setting the camera or view parameters to match those used during the animation playback. If the renderToImage function does not automatically inherit these settings, you may need to adjust the rendering context or apply the necessary transformations programmatically before capturing the image.