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Using the Frame Marker PNG's in the SDK

What is the intended application for the small Frame Marker PNG's provided w/ the SDK? (see attached) Are these simply for reference, or to be used as assets? If they're assets, how do you work with them? I haven't had much luck w/ the graphics programs I've tried. I can scale them cleanly, but can't break them down. What I'd like to do, is to remove the gray interiors, or make them transparent, to overlay the frames onto images.

If you have access to Photoshop, the magic wand tool can be used to remove the gray interior. GIMP has a similar tool that can be used to select the interior and then clear it.

Thanks I'll try that. Does the wand work on these as-is, or do they need to be rasterized, or somehow transformed first? Also how did you guys generate these frame markers? Is there any code that's available for creating them?

They are already rasterized, the only trick is to scale them up without smoothing, use a magic wand on the background and delete the grey. You will have to add a transparency channel though, which might mean changing the color format of the image (to support RGBA). - Kim