Hi, I'm developing an augmented-reality app in which I wish to overlay real-world data, specifically hiking trails from the OpenStreetMap project, on the phone's camera feed.
I'm getting this kind-of working, using the camera's SurfaceView stacked on the GLSurfaceView (yes, that way round, as documented by several on the web). However you can't always see both layers and in any case I've seen posts on here suggesting you're not supposed to overlay two SurfaceViews on each other. However what I'm struggling to find is an alternative way of doing it. The method which springs to mind is to draw the OpenGL layer without using a GLSurfaceView (e.g. just a regular view) but can that be done? An alternative method is to send the feed to the GLSurfaceView as a texture but this seems a bit of a long winded way of doing it and if there are simpler alternatives, I'd prefer to go that route. On another issue related to the same app, on Android 2.1 (and below) there is no way to use the API to find any of the camera field of view parameters, focal length, and so on. The specification for the HTC Hero does not mention any of those parameters, though I've estimated in the field a horizontal field of view of just under 40 degrees. It seems that for 2.1 and below one would have to use some sort of table mapping phone models to parameters, but again googling is drawing blanks. Is anyone aware of a list of models and camera FOV parameters? Thanks, Nick -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
