Open GL ES - Adding textures on touch

[thomaswguy]

Hello,

I have been struggling with this for a few days now and would really appreciate some advice.

- I have created a sphere, using Vertices.
- Onto this sphere i have mapped an image of a globe (Completed this process for the two hemispheres separately)
- When i touch the globe i have it so that i am receiving the x, y and z co-
ordinates of that touch.

The issue: when i receive these co-ordinates i would like to map a "Highlighted" image of the selected country to the globe.

So how do you map an image onto an object that is already textured?

Do i create a set of vertices to represent the image and then texture that with the relevant countries image? And how do i allow for the curve of the sphere.? And how does this fit in to the x, y and z co-ordinates i have received from the touch!

Any advice or pointers in the right direction would be hugely appreciated.

Thanks in advance.

[sambasivarao4u]

Hi,

I want to develop a view for iPhone which will look like as the attached image, which will have a list of images. where user can swipe left and right. When user clicks on a particular image, it should zoom and cover full screen. when taps again it should go back to original postion.

I did this by learning "open gl es" basics. But I am able to get till swipes. Now struggling to achieve the image selection functionality.

Please let me know,
1.how I can get the image selection using open gl es or
2.how I can get stereo perspective view using core animation or quartz, where I can add images as subviews.


http://i.imgur.com/mHKUr.png

Thanks
Shiva