So instead of resizing, mirroring and cropping an image to try to make a good sky sphere I decided to write this small tool. Simply load any file, select the most interesting area and the center of the image and it will do the rest.
It is written in C# so you will need the .NET framework 2.0 (or Windows Vista, Windows 7). If you want the source code just tell me.
Update 1:
- Now it actually reads the custom sizes you type
- Image borders can be blended so your sky sphere doesn't have visible seams
- Can directly write the skysphere to Audiosurf's texture folder
Update 2:
- Added an option to mirror the image (selected by default, images with text should look correctly now)
- Should find Audiosurf even if you installed steam outside of %ProgramFiles%
Update 3:
- Added buttons to reset the textures to their default value
- Redone the user interface
Update 4:
This doesn't add new features, it just fixes a typo and adds some minimal cosmetic enhancements.