Think about frame number

[waywardmonkeys]

Right now, Time::frame is an f64, but is called a frame number. It used to be 32 bit, but was changed.

Most of the time, in other systems, a frame number is an integer.

Some times, this value is a percentage of the duration rather than a frame number. Other things treat it as a number of fractional seconds since the start of the animation.

This is an area that deserves further thought.