bool slopkeepTest(FbxAnimCurve* curve, FbxAnimCurveKey prevkey, FbxAnimCurveKey currkey, FbxAnimCurveKey nextkey)
{
FbxTime prevt = prevkey.GetTime();
FbxTime currt = currkey.GetTime();
FbxTime nextt = nextkey.GetTime();
float slope1 = (currkey.GetValue() - prevkey.GetValue()) / (currt.GetSecondDouble() - prevt.GetSecondDouble());
float slope2 = (nextkey.GetValue() - currkey.GetValue()) / (nextt.GetSecondDouble() - currt.GetSecondDouble());
output2 << setw(20) << "slope : " << setw(10) << setprecision(3) << slope1 << "," << setw(10) << slope2;
if (abs(slope1 - slope2) > 0.005)
{
output2 << " keepinSlope" << endl;
return true;
}
output2 << endl;
float deriv1, deriv2, deriv3, deriv4;
deriv1 = prevkey.GetDataFloat(FbxAnimCurveDef::EDataIndex::eRightSlope);
deriv2 = prevkey.GetDataFloat(FbxAnimCurveDef::EDataIndex::eNextLeftSlope);
deriv3 = currkey.GetDataFloat(FbxAnimCurveDef::EDataIndex::eRightSlope);
deriv4 = currkey.GetDataFloat(FbxAnimCurveDef::EDataIndex::eNextLeftSlope);
FbxTime mili;
mili.SetMilliSeconds(1);
output3 << "deriv1 : " << deriv1 << ", val : " << prevkey.GetValue() << ", +1mili value : " << curve->EvaluateRightDerivative(prevt + mili) << endl;
float derivl11, derivl12, derivl21, derivl22;
float derivr11, derivr12, derivr21, derivr22;
FbxTime term1, term2;
term1.SetSecondDouble((currt.GetSecondDouble() - prevt.GetSecondDouble()) / 3);
term2.SetSecondDouble((nextt.GetSecondDouble() - currt.GetSecondDouble()) / 3);
derivl11 = curve->EvaluateLeftDerivative(prevt + term1);
derivl12 = curve->EvaluateLeftDerivative(prevt + term1 + term1);
derivl21 = curve->EvaluateLeftDerivative(currt + term2);
derivl22 = curve->EvaluateLeftDerivative(currt + term2 + term2);
derivr11 = curve->EvaluateRightDerivative(prevt + term1);
derivr12 = curve->EvaluateRightDerivative(prevt + term1 + term1);
derivr21 = curve->EvaluateRightDerivative(currt + term2);
derivr22 = curve->EvaluateRightDerivative(currt + term2 + term2);
output2 << setw(20) << "deriv : " << setprecision(3)
<< deriv1 <<","
<< deriv2 <<","
<< deriv3 <<","
<< deriv4 <<","
<< derivl11<<","
<< derivl12<<","
<< derivl21<<","
<< derivl22<<","
<< derivr11<<","
<< derivr12<<","
<< derivr21<<","
<< derivr22<<","
;
if (
prevkey.GetInterpolation() == FbxAnimCurveDef::eInterpolationConstant &&
currkey.GetInterpolation() == FbxAnimCurveDef::eInterpolationConstant &&
nextkey.GetInterpolation() == FbxAnimCurveDef::eInterpolationConstant
)
{
if (
abs(prevkey.GetValue() - currkey.GetValue()) < comp_level_horizon &&
abs(currkey.GetValue() - nextkey.GetValue()) < comp_level_horizon
)
return false;
}
else if (
prevkey.GetInterpolation() == FbxAnimCurveDef::eInterpolationCubic &&
currkey.GetInterpolation() == FbxAnimCurveDef::eInterpolationCubic &&
nextkey.GetInterpolation() == FbxAnimCurveDef::eInterpolationCubic
)
{
if (
abs(deriv1 - deriv2) < comp_level_deriv &&
abs(deriv2 - deriv3) < comp_level_deriv &&
abs(deriv3 - deriv4) < comp_level_deriv
)
{
float nearCurr = (deriv1*(currt.GetMilliSeconds() - prevt.GetMilliSeconds())) + prevkey.GetValue();
float nearNext = (deriv3*(nextt.GetMilliSeconds() - currt.GetMilliSeconds())) + currkey.GetValue();
if (
abs(nearCurr - currkey.GetValue()) < comp_level_integError &&
abs(nearNext - nextkey.GetValue()) < comp_level_integError
)
return false;
}
}
return true;
/*
if (
abs(deriv1 - deriv2) < 0.005 &&
abs(deriv2 - deriv3) < 0.005 &&
abs(deriv3 - deriv4) < 0.005 &&
abs(deriv4 - derivl11) < 0.005 &&
abs(derivl11 - derivr11) < 0.005 &&
abs(derivr11 - derivl12) < 0.005 &&
abs(derivl12 - derivr12) < 0.005 &&
abs(derivr12 - derivl21) < 0.005 &&
abs(derivl21 - derivr21) < 0.005 &&
abs(derivr21 - derivl22) < 0.005 &&
abs(derivl22 - derivr22) < 0.005
)
{
}
else
{
output2 << "keepinDeriv" << endl;
return true;
}
output2 << "removable key" << endl;
*/
return false;
}
bool UnFbx::FFbxImporter::ImportCurve(const FbxAnimCurve* FbxCurve, FFloatCurve * Curve, const FbxTimeSpan &AnimTimeSpan, const float ValueScale/*=1.f*/) const
{
static float DefaultCurveWeight = FbxAnimCurveDef::sDEFAULT_WEIGHT;
if ( FbxCurve && Curve )
{
for ( int32 KeyIndex=0; KeyIndex<FbxCurve->KeyGetCount(); ++KeyIndex )
{
FbxAnimCurveKey Key = FbxCurve->KeyGet(KeyIndex);
FbxTime KeyTime = Key.GetTime() - AnimTimeSpan.GetStart();
float Value = Key.GetValue() * ValueScale;
FKeyHandle NewKeyHandle = Curve->FloatCurve.AddKey(KeyTime.GetSecondDouble(), Value, true);
FbxAnimCurveDef::ETangentMode KeyTangentMode = Key.GetTangentMode();
FbxAnimCurveDef::EInterpolationType KeyInterpMode = Key.GetInterpolation();
FbxAnimCurveDef::EWeightedMode KeyTangentWeightMode = Key.GetTangentWeightMode();
ERichCurveInterpMode NewInterpMode = RCIM_Linear;
ERichCurveTangentMode NewTangentMode = RCTM_Auto;
ERichCurveTangentWeightMode NewTangentWeightMode = RCTWM_WeightedNone;
float LeaveTangent = 0.f;
float ArriveTangent = 0.f;
float LeaveTangentWeight = 0.f;
float ArriveTangentWeight = 0.f;
switch (KeyInterpMode)
{
case FbxAnimCurveDef::eInterpolationConstant://! Constant value until next key.
NewInterpMode = RCIM_Constant;
break;
case FbxAnimCurveDef::eInterpolationLinear://! Linear progression to next key.
NewInterpMode = RCIM_Linear;
break;
case FbxAnimCurveDef::eInterpolationCubic://! Cubic progression to next key.
NewInterpMode = RCIM_Cubic;
// get tangents
{
LeaveTangent = Key.GetDataFloat(FbxAnimCurveDef::eRightSlope);
if ( KeyIndex > 0 )
{
FbxAnimCurveKey PrevKey = FbxCurve->KeyGet(KeyIndex-1);
ArriveTangent = PrevKey.GetDataFloat(FbxAnimCurveDef::eNextLeftSlope);
}
else
{
ArriveTangent = 0.f;
}
}
break;
}
// when we import tangent, we only support break or user
// since it's modified by DCC and we only assume these two are valid
// auto does our own stuff, which doesn't work with what you see in DCC
if (KeyTangentMode & FbxAnimCurveDef::eTangentBreak)
{
NewTangentMode = RCTM_Break;
}
else
{
NewTangentMode = RCTM_User;
}
// @fix me : weight of tangent is not used, but we'll just save this for future where we might use it.
switch (KeyTangentWeightMode)
{
case FbxAnimCurveDef::eWeightedNone://! Tangent has default weights of 0.333; we define this state as not weighted.
LeaveTangentWeight = ArriveTangentWeight = DefaultCurveWeight;
NewTangentWeightMode = RCTWM_WeightedNone;
break;
case FbxAnimCurveDef::eWeightedRight: //! Right tangent is weighted.
NewTangentWeightMode = RCTWM_WeightedLeave;
LeaveTangentWeight = Key.GetDataFloat(FbxAnimCurveDef::eRightWeight);
ArriveTangentWeight = DefaultCurveWeight;
break;
case FbxAnimCurveDef::eWeightedNextLeft://! Left tangent is weighted.
NewTangentWeightMode = RCTWM_WeightedArrive;
LeaveTangentWeight = DefaultCurveWeight;
if ( KeyIndex > 0 )
{
FbxAnimCurveKey PrevKey = FbxCurve->KeyGet(KeyIndex-1);
ArriveTangentWeight = PrevKey.GetDataFloat(FbxAnimCurveDef::eNextLeftWeight);
}
else
{
ArriveTangentWeight = 0.f;
}
break;
case FbxAnimCurveDef::eWeightedAll://! Both left and right tangents are weighted.
NewTangentWeightMode = RCTWM_WeightedBoth;
LeaveTangentWeight = Key.GetDataFloat(FbxAnimCurveDef::eRightWeight);
if ( KeyIndex > 0 )
{
FbxAnimCurveKey PrevKey = FbxCurve->KeyGet(KeyIndex-1);
ArriveTangentWeight = PrevKey.GetDataFloat(FbxAnimCurveDef::eNextLeftWeight);
}
else
{
ArriveTangentWeight = 0.f;
}
break;
}
Curve->FloatCurve.SetKeyInterpMode(NewKeyHandle, NewInterpMode);
Curve->FloatCurve.SetKeyTangentMode(NewKeyHandle, NewTangentMode);
Curve->FloatCurve.SetKeyTangentWeightMode(NewKeyHandle, NewTangentWeightMode);
FRichCurveKey& NewKey = Curve->FloatCurve.GetKey(NewKeyHandle);
// apply 1/100 - that seems like the tangent unit difference with FBX
NewKey.ArriveTangent = ArriveTangent * 0.01f;
NewKey.LeaveTangent = LeaveTangent * 0.01f;
NewKey.ArriveTangentWeight = ArriveTangentWeight;
NewKey.LeaveTangentWeight = LeaveTangentWeight;
}
return true;
}
return false;
}
