How often do users create a BoundingSphere with infinite bounds (FLT_MAX)? I would think pretty often (like for navigation behaviors). How about an EverywhereBounds object? Instead of doing a (rather inexpensive) floating point comparison, it would return an (absolutely free) true status for bounds checks. J. Lee Dixon Software Engineer SAIC - Celebration, FL [EMAIL PROTECTED] =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".