> 1) rounding errors will creep up on you if you do a lot of
> calculations
The rotate methods rely on the accuracy of the transcendental operations
of sin and cos. Could that be where your rounding errors were coming
from?
AffineTransform does all work in doubles internally so it should have
quite a bit of accuracy for any real-world operations. Transcendental
trigonometric operations, on the other hand, are often approximated
for performance. Some work has been done in recent releases to shift
away from platform libraries towards a portable library to calculate
these operations, but there will always be the accuracy/performance
tradeoff in any implementation of them...
...jim
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