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Diffstat (limited to 'common/accel-natural.hpp')
| -rw-r--r-- | common/accel-natural.hpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/common/accel-natural.hpp b/common/accel-natural.hpp index c7d0dcd..03700c1 100644 --- a/common/accel-natural.hpp +++ b/common/accel-natural.hpp @@ -10,15 +10,21 @@ namespace rawaccel { struct natural_impl { double rate; double limit; + double offset; natural_impl(const accel_args& args) : - rate(args.accel), limit(args.limit - 1) + rate(args.accel), limit(args.limit - 1), offset(args.offset) { rate /= limit; } inline double operator()(double speed) const { // f(x) = k(1-e^(-mx)) + double base_speed = speed + offset; + return limit * (1 - ((exp(-rate * speed) * speed + offset) / base_speed)); + } + + inline double legacy_offset(double speed) const { return limit - (limit * exp(-rate * speed)); } |