Question

I was curious to know what software is used to create the 3D Cat in the talking tom app in iphone. Is it done with OpenGL ES?

http://itunes.apple.com/us/app/talking-tom-cat/id377194688?mt=8

Answer 1

Well if it’s related to talking tom then there is no OpenGL ES use… they are simply using images and animating them, something like this:

    aniImage = [[UIImageView alloc] init];
UIImage* opa1 = [UIImage imageNamed:@"o1.png"];
UIImage* opa2 = [UIImage imageNamed:@"o2.png"];
UIImage* opa3 = [UIImage imageNamed:@"o3.png"];
UIImage* opa4 = [UIImage imageNamed:@"o4.png"];
UIImage* opa5 = [UIImage imageNamed:@"o5.png"];
UIImage* opa6 = [UIImage imageNamed:@"o6.png"];
UIImage* opa7 = [UIImage imageNamed:@"o7.png"];
UIImage* opa8 = [UIImage imageNamed:@"o8.png"];
UIImage* opa9 = [UIImage imageNamed:@"o9.png"];
UIImage* opa10 = [UIImage imageNamed:@"o10.png"];
UIImage* opa11 = [UIImage imageNamed:@"o11.png"];
UIImage* opa12 = [UIImage imageNamed:@"o12.png"];
UIImage* opa13 = [UIImage imageNamed:@"o13.png"];
UIImage* opa14 = [UIImage imageNamed:@"o14.png"];
UIImage* opa15 = [UIImage imageNamed:@"o15.png"];
UIImage* opa16 = [UIImage imageNamed:@"o16.png"];
UIImage* opa17 = [UIImage imageNamed:@"o17.png"];
UIImage* opa18 = [UIImage imageNamed:@"o18.png"];
NSArray *imgsArr = [NSArray arrayWithObjects:opa1, opa2, opa3, opa4, 
                          opa5, opa6, opa7, opa8, opa9, opa10, opa11, opa12, opa13, opa14, opa15, opa16, opa17, opa18, nil];
[aniImage setAnimationImages:imagesOpacity];
[aniImage setAnimationRepeatCount:1.0];
[aniImage setAnimationDuration:0.2];

If you want to see all the images they are using follow these steps:

1. Download the free version to your iPhone/iPad.
2. Transfer your purchases on your Mac or Windows computer.
3. Then drag the ipa file from Library -> Apps to your desktop (just drag the app icon from iTunes to desktop).
4. Rename the .ipa file to .zip file.
5. Extract this zip file. You will get a folder named “Payload” in it.
6. Open the .app file (it will open on Windows automatically because it is a folder on Windows,
   on Mac right click on it and select Show package content.
7. In the .app folder you will find a folder which contains all the images used by the above function.

Hope this helps.