// Description:
// Given a clipboard and an ifstream, read the ifstream and add
// all of the anim curves described in ther stream into the
// API clipboard.
//
public void readClipboard(ref StreamReaderExt readAnim, MAnimCurveClipboard cb)
{
// Set the default values for the start and end of the clipboard.
// The MAnimCurveClipboard::set() method will examine all of the
// anim curves are determine the proper start and end values, if the
// start time is greater than the end value.
//
// By default, the start values are greater than the end values to
// ensure correct behavior if the file does not specify the start and
// end values.
//
double startTime = 1.0;
double endTime = 0.0;
double startUnitless = 1.0;
double endUnitless = 0.0;
resetUnits();
convertAnglesFromV2To3 = false;
convertAnglesFromV3To2 = false;
// Read the header. The header officially ends when the first non-header
// keyword is found. The header contains clipboard specific information
// where the body is anim curve specific.
//
string dataType = "";
bool hasVersionString = false;
while (!readAnim.EndOfStream)
{
advance(ref readAnim);
dataType = asWord(ref readAnim);
if (string.Compare(dataType, kAnimVersion) == 0)
{
string version = asWord(ref readAnim);
animVersion = Convert.ToDouble(version);
string thisVersion = kAnimVersionString;
hasVersionString = true;
// Add versioning control here.
//
if (version != thisVersion)
{
// Use format to place variable string into message
string msgFmt = MStringResource.getString(RegisterMStringResources.kInvalidVersion);
string msg = string.Format(msgFmt, thisVersion, version);
MGlobal.displayWarning(msg);
}
}
else if (string.Compare(dataType, kMayaVersion) == 0)
{
string version = asWord(ref readAnim, true);
string currentVersion = MGlobal.mayaVersion;
if (currentVersion.Substring(0, 2) == "2.")
{
string vCheck = version.Substring(0, 2);
if (vCheck != "2.")
convertAnglesFromV3To2 = true;
}
else
{
// If this is a pre-Maya 3.0 file, then the tangent angles
// will need to be converted to work in Maya 3.0+
//
string vCheck = version.Substring(0, 2);
if (vCheck == "2.")
{
convertAnglesFromV2To3 = true;
}
}
}
else if (string.Compare(dataType, kTimeUnit) == 0)
{
string timeUnitString = asWord(ref readAnim);
if (!animUnitNames.setFromName(timeUnitString, ref timeUnit))
{
string unitName = "";
timeUnit = MTime.uiUnit;
animUnitNames.setToShortName(timeUnit, ref unitName);
// Use format to place variable string into message
string msgFmt = MStringResource.getString(RegisterMStringResources.kSettingToUnit);
string msg = string.Format(msgFmt, kTimeUnit, unitName);
MGlobal.displayWarning(msg);
}
}
else if (string.Compare(dataType, kLinearUnit) == 0)
{
string linearUnitString = asWord(ref readAnim);
if (!animUnitNames.setFromName(linearUnitString, ref linearUnit))
{
string unitName = "";
linearUnit = MDistance.uiUnit;
animUnitNames.setToShortName(linearUnit, ref unitName);
// Use format to place variable string into message
string msgFmt = MStringResource.getString(RegisterMStringResources.kSettingToUnit);
string msg = string.Format(msgFmt, kLinearUnit, unitName);
MGlobal.displayWarning(msg);
}
}
else if (string.Compare(dataType, kAngularUnit) == 0)
{
string angularUnitString = asWord( ref readAnim);
if (!animUnitNames.setFromName(angularUnitString, ref angularUnit))
{
string unitName = "";
angularUnit = MAngle.uiUnit;
animUnitNames.setToShortName(angularUnit, ref unitName);
// Use format to place variable string into message
string msgFmt = MStringResource.getString(RegisterMStringResources.kSettingToUnit);
string msg = string.Format(msgFmt, kAngularUnit, unitName);
MGlobal.displayWarning(msg);
}
}
else if (string.Compare(dataType, kStartTime) == 0)
startTime = asDouble(ref readAnim);
else if (string.Compare(dataType, kEndTime) == 0)
endTime = asDouble(ref readAnim);
else if (string.Compare(dataType, kStartUnitless) == 0)
startUnitless = asDouble(ref readAnim);
else if (string.Compare(dataType, kEndUnitless) == 0)
endUnitless = asDouble(ref readAnim);
else {
// The header should be finished. Begin to parse the body.
//
break;
}
}
// The animVersion string is required.
//
if (!hasVersionString)
{
// Use format to place variable string into message
string msgFmt = MStringResource.getString(RegisterMStringResources.kMissingKeyword);
string msg = string.Format(msgFmt, kAnimVersion);
throw new ArgumentException(msg, "cb");
}
// Set the linear and angular units to be the same as the file
// being read. This will allow fixed tangent data to be read
// in properly if the scene has different units than the .anim file.
//
MDistance.Unit oldDistanceUnit = MDistance.uiUnit;
MTime.Unit oldTimeUnit = MTime.uiUnit;
MDistance.uiUnit = linearUnit;
MTime.uiUnit = timeUnit;
MAnimCurveClipboardItemArray clipboardArray = new MAnimCurveClipboardItemArray();
while (!readAnim.EndOfStream)
{
if ("" == dataType) {
dataType = asWord(ref readAnim);
}
if (string.Compare(dataType, kAnim) == 0)
{
string fullAttributeName = "", leafAttributeName="", nodeName = "";
// If this is from an unconnected anim curve, then there
// will not be an attribute name.
//
if (!isNextNumeric(ref readAnim))
{
fullAttributeName = asWord(ref readAnim);
// If the node names were specified, then the next two
// words should be the leaf attribute and the node name.
//
if (!isNextNumeric(ref readAnim))
{
leafAttributeName = asWord(ref readAnim);
nodeName = asWord(ref readAnim);
}
}
uint rowCount, childCount, attrCount;
rowCount = (uint)asDouble(ref readAnim);
childCount = (uint)asDouble(ref readAnim);
attrCount = (uint)asDouble(ref readAnim);
// If the next keyword is not an animData, then this is
// a place holder for the API clipboard.
//
dataType = asWord(ref readAnim);
if (string.Compare(dataType, kAnimData) == 0)
{
MAnimCurveClipboardItem clipboardItem = new MAnimCurveClipboardItem();
if (readAnimCurve(ref readAnim, ref clipboardItem))
{
clipboardItem.setAddressingInfo(rowCount,
childCount, attrCount);
clipboardItem.setNameInfo( nodeName,
fullAttributeName,
leafAttributeName);
clipboardArray.append(clipboardItem);
}
else
{
// Could not read the anim curve.
//
string msg = MStringResource.getString(RegisterMStringResources.kCouldNotReadAnim);
MGlobal.displayError(msg);
}
}
else
{
// This must be a place holder object for the clipboard.
//
MAnimCurveClipboardItem clipboardItem = new MAnimCurveClipboardItem();
clipboardItem.setAddressingInfo(rowCount,
childCount, attrCount);
// Since there is no anim curve specified, what is
// in the fullAttributeName string is really the node
// name.
//
clipboardItem.setNameInfo( fullAttributeName,
nodeName,
leafAttributeName);
clipboardArray.append(clipboardItem);
// dataType already contains the next keyword.
//
continue;
}
}
else
{
if (!readAnim.EndOfStream)
{
string warnStr = dataType;
// Use format to place variable string into message
string msgFmt = MStringResource.getString(RegisterMStringResources.kUnknownKeyword);
string msg = string.Format(msgFmt, warnStr);
MGlobal.displayError(msg);
// Skip to the next line, this one is invalid.
//
readAnim.ReadLine();
}
else
{
// The end of the file was reached.
//
break;
}
}
// Skip any whitespace.
//
dataType = "";
}
try
{
cb.set( clipboardArray,
new MTime(startTime, timeUnit), new MTime(endTime, timeUnit),
(float) startUnitless, (float) endUnitless) ;
}
catch (System.Exception)
{
string msg = MStringResource.getString(RegisterMStringResources.kClipboardFailure);
MGlobal.displayError(msg);
}
// Restore the old units.
//
MDistance.uiUnit = oldDistanceUnit;
MTime.uiUnit = oldTimeUnit;
}
// Description:
// Read a block of the stream that should contain anim curve
// data in the format determined by the animData keyword.
//
protected bool readAnimCurve(ref StreamReaderExt clipFile, ref MAnimCurveClipboardItem item)
{
MFnAnimCurve animCurve = new MFnAnimCurve();
MObject animCurveObj = new MObject();
// Anim curve defaults.
//
animBase.AnimBaseType input = wordAsInputType(kWordTypeTime);
animBase.AnimBaseType output = wordAsOutputType(kWordTypeLinear);
MFnAnimCurve.InfinityType preInf = wordAsInfinityType(kWordConstant);
MFnAnimCurve.InfinityType postInf = wordAsInfinityType(kWordConstant);
string inputUnitName = "";
animUnitNames.setToShortName(timeUnit, ref inputUnitName);
string outputUnitName = "";
MAngle.Unit tanAngleUnit = angularUnit;
bool isWeighted = false;
string dataType = "";
while (!clipFile.EndOfStream)
{
advance(ref clipFile);
dataType = asWord(ref clipFile);
if (string.Compare(dataType, kInputString) == 0) {
input = wordAsInputType(asWord(ref clipFile));
} else if (string.Compare(dataType, kOutputString) == 0) {
output = wordAsOutputType(asWord(ref clipFile));
} else if (string.Compare(dataType, kWeightedString) == 0) {
isWeighted = (asDouble(ref clipFile) == 1.0);
} else if (string.Compare(dataType, kPreInfinityString) == 0) {
preInf = wordAsInfinityType(asWord(ref clipFile));
} else if (string.Compare(dataType, kPostInfinityString) == 0) {
postInf = wordAsInfinityType(asWord(ref clipFile));
} else if (string.Compare(dataType, kInputUnitString) == 0) {
inputUnitName = asWord(ref clipFile);
} else if (string.Compare(dataType, kOutputUnitString) == 0) {
outputUnitName = asWord(ref clipFile);
} else if (string.Compare(dataType, kTanAngleUnitString) == 0) {
string tUnit = asWord(ref clipFile);
if (!animUnitNames.setFromName(tUnit, ref tanAngleUnit)) {
string unitName="";
tanAngleUnit = angularUnit;
animUnitNames.setToShortName(tanAngleUnit, ref unitName);
// Use format to place variable string into message
string msgFmt = MStringResource.getString(RegisterMStringResources.kSettingTanAngleUnit);
string msg = string.Format(msgFmt, unitName);
MGlobal.displayError(msg);
}
} else if (string.Compare(dataType, kKeysString) == 0) {
// Ignore the rest of this line.
//
clipFile.ReadLine();
break;
} else if (string.Compare(dataType, "{") == 0) {
// Skippping the '{' character. Just ignore it.
//
continue;
} else {
// An unrecogized keyword was found.
//
string warnStr = (dataType);
// Use format to place variable string into message
string msgFmt = MStringResource.getString(RegisterMStringResources.kUnknownKeyword);
string msg = string.Format(msgFmt, warnStr);
MGlobal.displayError(msg);
continue;
}
}
// Read the animCurve
//
MFnAnimCurve.AnimCurveType type = typeAsAnimCurveType(input, output);
try
{
animCurveObj = animCurve.create(type,null);
}
catch (System.Exception )
{
string msg = MStringResource.getString(RegisterMStringResources.kCouldNotCreateAnim);
MGlobal.displayError(msg);
return false;
}
animCurve.setIsWeighted(isWeighted);
animCurve.setPreInfinityType(preInf);
animCurve.setPostInfinityType(postInf);
// Set the appropriate units.
//
MTime.Unit inputTimeUnit = MTime.Unit.kInvalid;
if (input == AnimBaseType.kAnimBaseTime)
{
if (!animUnitNames.setFromName(inputUnitName, ref inputTimeUnit))
{
string unitName = "";
inputTimeUnit = timeUnit;
animUnitNames.setToShortName(inputTimeUnit, ref unitName);
// Use format to place variable string into message
string msgFmt = MStringResource.getString(RegisterMStringResources.kSettingToUnit);
string msg = string.Format(msgFmt, kInputUnitString, unitName);
MGlobal.displayWarning(msg);
}
}
MTime.Unit outputTimeUnit= MTime.Unit.kInvalid;
if (output == AnimBaseType.kAnimBaseTime)
{
if (!animUnitNames.setFromName(outputUnitName, ref outputTimeUnit))
{
string unitName = "";
outputTimeUnit = timeUnit;
animUnitNames.setToShortName(outputTimeUnit, ref unitName);
// Use format to place variable string into message
string msgFmt = MStringResource.getString(RegisterMStringResources.kSettingToUnit);
string msg = string.Format(msgFmt, kOutputUnitString, unitName);
MGlobal.displayWarning(msg);
}
}
uint index = 0;
double conversion = 1.0;
if (output == AnimBaseType.kAnimBaseLinear)
{
MDistance.Unit unit = MDistance.Unit.kInvalid;
if (outputUnitName.Length != 0)
{
if (!animUnitNames.setFromName(outputUnitName, ref unit))
{
string unitName = "";
unit = linearUnit;
animUnitNames.setToShortName(unit, ref unitName);
// Use format to place variable string into message
string msgFmt = MStringResource.getString(RegisterMStringResources.kSettingToUnit);
string msg = string.Format(msgFmt, kOutputUnitString, unitName);
MGlobal.displayWarning(msg);
}
}
else
unit = linearUnit;
if (unit != MDistance.Unit.kCentimeters)
{
MDistance one = new MDistance(1.0, unit);
conversion = one.asCentimeters;
}
}
else if (output == AnimBaseType.kAnimBaseAngular)
{
MAngle.Unit unit = MAngle.Unit.kInvalid;
if (outputUnitName.Length != 0)
{
if (!animUnitNames.setFromName(outputUnitName, ref unit))
{
string unitName = "";
unit = angularUnit;
animUnitNames.setToShortName(unit, ref unitName);
// Use format to place variable string into message
string msgFmt = MStringResource.getString(RegisterMStringResources.kSettingToUnit);
string msg = string.Format(msgFmt, kOutputUnitString, unitName);
MGlobal.displayWarning(msg);
}
}
else
unit = angularUnit;
if (unit != MAngle.Unit.kRadians)
{
MAngle one = new MAngle(1.0, unit);
conversion = one.asRadians;
}
}
// Now read each keyframe
//
advance(ref clipFile);
char c = (char)clipFile.Peek();
while (!clipFile.EndOfStream && c != kBraceRightChar)
{
double t = asDouble(ref clipFile);
double val = asDouble(ref clipFile);
MFnAnimCurve.TangentType tanIn = wordAsTangentType(asWord(ref clipFile));
MFnAnimCurve.TangentType tanOut = wordAsTangentType(asWord(ref clipFile));
switch (type)
{
case MFnAnimCurve.AnimCurveType.kAnimCurveTT:
index = animCurve.addKey( new MTime(val, inputTimeUnit),
new MTime(val, outputTimeUnit),
tanIn, tanOut, null);
break;
case MFnAnimCurve.AnimCurveType.kAnimCurveTL:
case MFnAnimCurve.AnimCurveType.kAnimCurveTA:
case MFnAnimCurve.AnimCurveType.kAnimCurveTU:
index = animCurve.addKey( new MTime(t, inputTimeUnit),
val*conversion, tanIn, tanOut,
null);
break;
case MFnAnimCurve.AnimCurveType.kAnimCurveUL:
case MFnAnimCurve.AnimCurveType.kAnimCurveUA:
case MFnAnimCurve.AnimCurveType.kAnimCurveUU:
index = animCurve.addKey( t, val*conversion,
tanIn, tanOut,
null);
break;
case MFnAnimCurve.AnimCurveType.kAnimCurveUT:
index = animCurve.addKey( t, new MTime(val, outputTimeUnit),
tanIn, tanOut,
null);
break;
default:
string msg = MStringResource.getString(RegisterMStringResources.kUnknownNode);
MGlobal.displayError(msg);
return false;
}
// Tangent locking needs to be called after the weights and
// angles are set for the fixed tangents.
//
bool tLocked = asDouble(ref clipFile) == 1.0;
bool swLocked = asDouble(ref clipFile) == 1.0;
bool isBreakdown = false;
if (animVersion >= kVersionNonWeightedAndBreakdowns)
{
isBreakdown = (asDouble(ref clipFile) == 1.0);
}
// Only fixed tangents need additional information.
//
if (tanIn == MFnAnimCurve.TangentType.kTangentFixed)
{
MAngle inAngle = new MAngle(asDouble(ref clipFile), tanAngleUnit);
double inWeight = asDouble(ref clipFile);
// If this is from a pre-Maya3.0 file, the tangent angles will
// need to be converted.
//
if (convertAnglesFromV2To3) {
convertAnglesAndWeights2To3(type,isWeighted,ref inAngle,ref inWeight);
} else if (convertAnglesFromV3To2) {
convertAnglesAndWeights3To2(type,isWeighted,ref inAngle,ref inWeight);
}
// By default, the tangents are locked. When the tangents
// are locked, setting the angle and weight of a fixed in
// tangent may change the tangent type of the out tangent.
//
animCurve.setTangentsLocked(index, false);
animCurve.setTangent(index, inAngle, inWeight, true);
}
// Only fixed tangents need additional information.
//
if (tanOut == MFnAnimCurve.TangentType.kTangentFixed)
{
MAngle outAngle = new MAngle(asDouble(ref clipFile), tanAngleUnit);
double outWeight = asDouble(ref clipFile);
// If this is from a pre-Maya3.0 file, the tangent angles will
// need to be converted.
//
if (convertAnglesFromV2To3) {
convertAnglesAndWeights2To3(type,isWeighted,ref outAngle,ref outWeight);
} else if (convertAnglesFromV3To2) {
convertAnglesAndWeights3To2(type,isWeighted,ref outAngle,ref outWeight);
}
// By default, the tangents are locked. When the tangents
// are locked, setting the angle and weight of a fixed out
// tangent may change the tangent type of the in tangent.
//
animCurve.setTangentsLocked(index, false);
animCurve.setTangent(index, outAngle, outWeight, false);
}
// To prevent tangent types from unexpectedly changing, tangent
// locking should be the last operation. See the above comments
// about fixed tangent types for more information.
//
animCurve.setWeightsLocked(index, swLocked);
animCurve.setTangentsLocked(index, tLocked);
animCurve.setIsBreakdown (index, isBreakdown);
// There should be no additional data on this line. Go to the
// next line of data.
//
clipFile.ReadLine();
// Skip any comments.
//
advance(ref clipFile);
c = (char)clipFile.Peek();
}
// Ignore the brace that marks the end of the keys block.
//
if (c == kBraceRightChar) {
clipFile.ReadLine();
}
// Ignore the brace that marks the end of the animData block.
//
advance(ref clipFile);
if ( (char)clipFile.Peek() == kBraceRightChar) {
clipFile.ReadLine();
}
else {
// Something is wrong.
//
string msg = MStringResource.getString(RegisterMStringResources.kMissingBrace);
MGlobal.displayError(msg);
}
// Do not set the clipboard with an empty clipboard item.
//
if (!animCurveObj.isNull) {
item.animCurve = animCurveObj;
}
// Delete the copy of the anim curve.
//
MGlobal.deleteNode(animCurveObj);
return true;
}
// Description:
// The method skips past all of the whitespace and commented lines
// in the stream. It will also ignore semi-colons.
//
public void advance(ref StreamReaderExt clipFile)
{
while (!clipFile.EndOfStream)
{
try
{
char next = (char)clipFile.Peek();
if (char.IsWhiteSpace(next))
{
clipFile.ReadChar();
continue;
}
if (next == kSemiColonChar)
{
clipFile.ReadChar();
continue;
}
if (next == kSlashChar || next == kHashChar)
{
clipFile.ReadLine();
continue;
}
break;
}
catch (System.Exception )
{
return;
}
}
}
public void advance(ref StreamReaderExt clipFile)
// Description:
// The method skips past all of the whitespace and commented lines
// in the stream. It will also ignore semi-colons.
//
{
while (!clipFile.EndOfStream)
{
try
{
char next = (char)clipFile.Peek();
if (char.IsWhiteSpace(next))
{
clipFile.ReadChar();
continue;
}
if (next == kSemiColonChar)
{
clipFile.ReadChar();
continue;
}
if (next == kSlashChar || next == kHashChar)
{
clipFile.ReadLine();
continue;
}
break;
}
catch (System.Exception )
{
return;
}
}
}