https://bugs.kde.org/show_bug.cgi?id=455450

July Tikhonov <july.t...@gmail.com> changed:

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                 CC|                            |july.t...@gmail.com

--- Comment #25 from July Tikhonov <july.t...@gmail.com> ---
The problem is not only in the speed itself, but in the uneven pacing of the
animation. This is a direct consequence of the mass-spring-damper model: the
motion starts off parabolically (with near-constant acceleration), but slows
down exponentially (with acceleration and speed proportional to remaining
distance). Therefore, the animation will always be either too fast at the
beginning, or too slow at the end.

For all my love of physics, I would suggest dump the spring-damper model.
Sometimes the most elegant solution is not good enough. (Personally, I have
patched the SpringMotion class to output a Bezier curve instead.)

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