2D map/plane with nodes overlayed that supports panning, scaling and clicking on nodes

Posted by garlicman on Game Development See other posts from Game Development or by garlicman
Published on 2012-12-04T20:12:23Z Indexed on 2012/12/04 23:22 UTC
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2d

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android

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3d

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opengl-es

I'm trying my hand at Android development and seem to be running into an invisible ceiling in trying to get what I want accomplished. Basically I'm trying to create an app that renders a 2D surface map that I can (pinch) zoom and pan. I'll have to place nodes on the surface of the map that will scale/zoom and pan in relation to the surface.

I started out with a 2D ImageView approach and got as far as pinch zoom, pan and laying nodes as relative ImageViews, but all the methods I tried to get X,Y,W,H for the 2D surface were always off for some reason. Additionally, I was never able to scale the node ImageViews correctly, and as a result never got far enough to try and work out their X,Y scaled offset.

So I decided to get back to 3D rendering. Conceptually pan/zoom is camera manipulation, so I don't have to mess with how to scale the 2D map or the nodes. But I need a starting point or sample to get me going that's close to what I'm trying to achieve. A sample on a translucent spinning cube isn't helping as much as I need it to.

Any tips? Links, insults and sympathy are all welcome!

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