diff options
Diffstat (limited to 'indra/llcommon/llcriticaldamp.cpp')
| -rw-r--r-- | indra/llcommon/llcriticaldamp.cpp | 51 |
1 files changed, 17 insertions, 34 deletions
diff --git a/indra/llcommon/llcriticaldamp.cpp b/indra/llcommon/llcriticaldamp.cpp index 87d79b1ee0..27fef0e6dc 100644 --- a/indra/llcommon/llcriticaldamp.cpp +++ b/indra/llcommon/llcriticaldamp.cpp @@ -32,8 +32,9 @@ // static members //----------------------------------------------------------------------------- LLFrameTimer LLCriticalDamp::sInternalTimer; -std::map<F32, F32> LLCriticalDamp::sInterpolants; F32 LLCriticalDamp::sTimeDelta; +F32 LLCriticalDamp::sInterpolants[kNumCachedInterpolants]; +F32 LLCriticalDamp::sInterpolatedValues[kNumCachedInterpolants]; //----------------------------------------------------------------------------- // LLCriticalDamp() @@ -41,6 +42,17 @@ F32 LLCriticalDamp::sTimeDelta; LLCriticalDamp::LLCriticalDamp() { sTimeDelta = 0.f; + + // Init the core interpolant values (to which many, many enums map) + // + setInterpolantConstant(InterpDelta_0_025, 0.025f); + setInterpolantConstant(InterpDelta_0_05, 0.05f ); + setInterpolantConstant(InterpDelta_0_06, 0.06f); + setInterpolantConstant(InterpDelta_0_10, 0.10f); + setInterpolantConstant(InterpDelta_0_15, 0.15f); + setInterpolantConstant(InterpDelta_0_20, 0.20f); + setInterpolantConstant(InterpDelta_0_25, 0.25f); + setInterpolantConstant(InterpDelta_0_30, 0.30f); } // static @@ -51,39 +63,10 @@ void LLCriticalDamp::updateInterpolants() { sTimeDelta = sInternalTimer.getElapsedTimeAndResetF32(); - F32 time_constant; - - for (std::map<F32, F32>::iterator iter = sInterpolants.begin(); - iter != sInterpolants.end(); iter++) - { - time_constant = iter->first; - F32 new_interpolant = 1.f - pow(2.f, -sTimeDelta / time_constant); - new_interpolant = llclamp(new_interpolant, 0.f, 1.f); - sInterpolants[time_constant] = new_interpolant; - } -} - -//----------------------------------------------------------------------------- -// getInterpolant() -//----------------------------------------------------------------------------- -F32 LLCriticalDamp::getInterpolant(const F32 time_constant, BOOL use_cache) -{ - if (time_constant == 0.f) + U32 i; + for (i = 0; i < kNumCachedInterpolants; i++) { - return 1.f; + sInterpolatedValues[i] = llclamp(sTimeDelta / sInterpolants[ i], 0.0f, 1.0f); } - - if (use_cache && sInterpolants.count(time_constant)) - { - return sInterpolants[time_constant]; - } - - F32 interpolant = 1.f - pow(2.f, -sTimeDelta / time_constant); - interpolant = llclamp(interpolant, 0.f, 1.f); - if (use_cache) - { - sInterpolants[time_constant] = interpolant; - } - - return interpolant; } + |