// Description:
// Write out the anim curve from the clipboard item into the
// stream. The actual anim curve data is written out.
//
// This method returns true if the write was successful.
//
protected void writeAnimCurve(ref StreamWriter clip,
MObject animCurveObj,
MFnAnimCurve.AnimCurveType type,
bool verboseUnits = false)
{
if (clip == null)
{
throw new ArgumentNullException( "clip" );
}
if (null == animCurveObj || animCurveObj.isNull)
{
throw new ArgumentNullException( "animCurveObj" );
}
MFnAnimCurve animCurve = new MFnAnimCurve(animCurveObj);
clip.Write(kAnimData + kSpaceChar + kBraceLeftChar + Environment.NewLine);
clip.Write(kTwoSpace + kInputString + kSpaceChar +
boolInputTypeAsWord(animCurve.isUnitlessInput) +
kSemiColonChar + Environment.NewLine);
clip.Write( kTwoSpace + kOutputString + kSpaceChar +
outputTypeAsWord(type) + kSemiColonChar + Environment.NewLine);
clip.Write(kTwoSpace + kWeightedString + kSpaceChar +
Convert.ToString(animCurve.isWeighted ? 1 : 0) + kSemiColonChar +Environment.NewLine);
// These units default to the units in the header of the file.
//
if (verboseUnits)
{
clip.Write(kTwoSpace + kInputUnitString + kSpaceChar);
if (animCurve.isTimeInput)
{
string unitName = "";
animUnitNames.setToShortName(timeUnit, ref unitName);
clip.Write(unitName);
}
else
{
// The anim curve has unitless input.
//
clip.Write(animUnitNames.kUnitlessString);
}
clip.Write(kSemiColonChar + Environment.NewLine);
clip.Write(kTwoSpace + kOutputUnitString + kSpaceChar);
}
double conversion = 1.0;
switch (type)
{
case MFnAnimCurve.AnimCurveType.kAnimCurveTA:
case MFnAnimCurve.AnimCurveType.kAnimCurveUA:
{
string unitName = "";
animUnitNames.setToShortName(angularUnit, ref unitName);
if (verboseUnits) clip.Write(unitName);
{
MAngle angle = new MAngle(1.0);
conversion = angle.asUnits(angularUnit);
}
break;
}
case MFnAnimCurve.AnimCurveType.kAnimCurveTL:
case MFnAnimCurve.AnimCurveType.kAnimCurveUL:
{
string unitName = "";
animUnitNames.setToShortName(linearUnit, ref unitName);
if (verboseUnits) clip.Write(unitName);
{
MDistance distance = new MDistance(1.0);
conversion = distance.asUnits(linearUnit);
}
break;
}
case MFnAnimCurve.AnimCurveType.kAnimCurveTT:
case MFnAnimCurve.AnimCurveType.kAnimCurveUT:
{
string unitName = "";
animUnitNames.setToShortName(timeUnit, ref unitName);
if (verboseUnits) clip.Write(unitName);
break;
}
default:
if (verboseUnits) clip.Write(animUnitNames.kUnitlessString);
break;
}
if (verboseUnits) clip.Write(kSemiColonChar +Environment.NewLine);
if (verboseUnits)
{
string angleUnitName = "";
animUnitNames.setToShortName(angularUnit, ref angleUnitName);
clip.Write(kTwoSpace + kTanAngleUnitString +
kSpaceChar + angleUnitName + kSemiColonChar + Environment.NewLine);
}
clip.Write(kTwoSpace + kPreInfinityString + kSpaceChar +
infinityTypeAsWord(animCurve.preInfinityType) +
kSemiColonChar + Environment.NewLine);
clip.Write(kTwoSpace + kPostInfinityString + kSpaceChar +
infinityTypeAsWord(animCurve.postInfinityType) +
kSemiColonChar + Environment.NewLine);
clip.Write(kTwoSpace + kKeysString + kSpaceChar + kBraceLeftChar + Environment.NewLine);
// And then write out each keyframe
//
uint numKeys = animCurve.numKeyframes;
for (uint i = 0; i < numKeys; i++)
{
clip.Write(kTwoSpace + kTwoSpace);
if (animCurve.isUnitlessInput)
{
clip.Write(animCurve.unitlessInput(i));
}
else
{
clip.Write(animCurve.time(i).value);
}
// clamp tiny values so that it isn't so small it can't be read in
//
double animValue = (conversion*animCurve.value(i));
if (isEquivalent(animValue,0.0))
animValue = 0.0;
clip.Write(kSpaceChar + Convert.ToString(animValue));
clip.Write(kSpaceChar + tangentTypeAsWord(animCurve.inTangentType(i)) );
clip.Write(kSpaceChar + tangentTypeAsWord(animCurve.outTangentType(i)) );
clip.Write( kSpaceChar + Convert.ToString(animCurve.tangentsLocked(i) ? 1 : 0));
clip.Write(kSpaceChar + Convert.ToString(animCurve.weightsLocked(i) ? 1 : 0));
clip.Write(kSpaceChar + Convert.ToString(animCurve.isBreakdown(i) ? 1 : 0));
if (animCurve.inTangentType(i) == MFnAnimCurve.TangentType.kTangentFixed)
{
MAngle angle = new MAngle();
double weight = 0.0;
animCurve.getTangent(i, angle, ref weight, true);
clip.Write(kSpaceChar + Convert.ToString(angle.asUnits(angularUnit)));
clip.Write(kSpaceChar + Convert.ToString(weight));
}
if (animCurve.outTangentType(i) == MFnAnimCurve.TangentType.kTangentFixed)
{
MAngle angle = new MAngle();
double weight = 0.0;
animCurve.getTangent(i, angle, ref weight, false);
clip.Write(kSpaceChar + Convert.ToString(angle.asUnits(angularUnit)));
clip.Write(kSpaceChar + Convert.ToString(weight));
}
clip.Write(kSemiColonChar + Environment.NewLine);
}
clip.Write(kTwoSpace + kBraceRightChar + Environment.NewLine);
clip.Write(kBraceRightChar + Environment.NewLine);
}
