Hi guys, long time iphone programmer but noob to 3D graphics, i'm just looking for some advice as to how to approach the following problem.
I need to have a sphere (not a cube) on which to project a picture. Camera will be at the center of the sphere and should rotate with the phone rotation. At all times i need to grab the XY position of the original image that aligns with the camera's direction.
So, being a noob to 3D, which would be the best / less painful way to achieve this? OpenGL ES, Metal? or SceneKit?
Any pointers are appreciated