Hi All,
Right i am just getting into OpenGL ES, and if i am honest it is very daunting.
Just need a little guidance to point me in the right direction for my current challenge.
I have some code that produces a 3D sphere, that has a texture mapped on to it (A Globe).
I can get the touch co-ordinates on the sphere, and have a handle on that, but my question is how do i then add another texture to that sphere?
I want to be able to touch the globe and then "Highlight" particular areas, SO i have the "Highlight image" i then want to map that image onto the globe on the touch.
This image will wrap around the sphere at the touched point.
Am i right in thinking this is a case of adding another texture to the already textured sphere? What would be the right approach to this?
Do i need to just create a 2D texture to be mapped or do i need a 3D texture (is there such a thing?)
Do i need to re texture the whole sphere?
Its all very confusing and some general pointers would be highly appreciated.
Many thanks in advance!