예제 #1
0
        //    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;
        }