Esempio n. 1
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        public static W3dMotionChannelTimeCodedData Parse(BinaryReader reader, ushort numTimeCodes, W3dAnimationChannelType channelType)
        {
            var keyframes = new ushort[numTimeCodes];

            for (var i = 0; i < numTimeCodes; i++)
            {
                keyframes[i] = reader.ReadUInt16();
            }

            if (numTimeCodes % 2 != 0)
            {
                // Align to 4-byte boundary.
                reader.ReadUInt16();
            }

            var data = new W3dAnimationChannelDatum[numTimeCodes];

            for (var i = 0; i < numTimeCodes; i++)
            {
                data[i] = W3dAnimationChannelDatum.Parse(reader, channelType);
            }

            return(new W3dMotionChannelTimeCodedData
            {
                TimeCodes = keyframes,
                Values = data
            });
        }
Esempio n. 2
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        internal static W3dAnimationChannel Parse(BinaryReader reader, W3dParseContext context)
        {
            return(ParseChunk(reader, context, header =>
            {
                var startPosition = reader.BaseStream.Position;

                var result = new W3dAnimationChannel
                {
                    FirstFrame = reader.ReadUInt16(),
                    LastFrame = reader.ReadUInt16(),
                    VectorLength = reader.ReadUInt16(),
                    ChannelType = reader.ReadUInt16AsEnum <W3dAnimationChannelType>(),
                    Pivot = reader.ReadUInt16(),
                    Unknown = reader.ReadUInt16()
                };

                ValidateChannelDataSize(result.ChannelType, result.VectorLength);

                var numElements = result.LastFrame - result.FirstFrame + 1;
                var data = new W3dAnimationChannelDatum[numElements];

                for (var i = 0; i < numElements; i++)
                {
                    data[i] = W3dAnimationChannelDatum.Parse(reader, result.ChannelType);
                }

                result.Data = data;

                result.NumPadBytes = (uint)(context.CurrentEndPosition - reader.BaseStream.Position);
                reader.BaseStream.Seek((int)result.NumPadBytes, SeekOrigin.Current);

                return result;
            }));
        }
Esempio n. 3
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        public static W3dAnimationChannelDatum[] Decode(
            W3dAdaptiveDeltaData data,
            uint numFrames,
            float scale)
        {
            var scaleFactor = 1.0f;

            switch (data.BitCount)
            {
            // Do nothing for 4 bit deltas since they already map to [-16;16]
            case W3dAdaptiveDeltaBitCount.FourBits:
                break;

            // When deltas are 8 bits large we need to scale them to the range [-16;16]
            case W3dAdaptiveDeltaBitCount.EightBits:
                scaleFactor = 1 / 16.0f;
                break;

            default:
                throw new InvalidOperationException("Adaptive delta only supported 4 bit & 8 bit!");
            }

            var result = new W3dAnimationChannelDatum[numFrames];

            result[0] = data.InitialDatum;

            for (var i = 0; i < data.DeltaBlocks.Length; i++)
            {
                var deltaBlock = data.DeltaBlocks[i];

                var blockIndex = deltaBlock.BlockIndex;
                var blockScale = Table[blockIndex];
                var deltaScale = blockScale * scale * scaleFactor;

                var vectorIndex = deltaBlock.VectorIndex;

                var deltas = deltaBlock.GetDeltas(data.BitCount);

                for (var j = 0; j < deltas.Length; j++)
                {
                    var idx = ((i / data.VectorLength) * 16) + j + 1;
                    if (idx >= numFrames)
                    {
                        break;
                    }

                    var value = result[idx - 1].GetValue(vectorIndex) + deltaScale * deltas[j];
                    result[idx] = result[idx].WithValue(value, vectorIndex);

                    idx++;
                }
            }

            return(result);
        }
        internal static W3dTimeCodedDatum Parse(BinaryReader reader, W3dAnimationChannelType channelType)
        {
            var result = new W3dTimeCodedDatum();

            result.TimeCode = reader.ReadUInt32();

            // MSB is used to indicate a binary (non interpolated) movement
            if ((result.TimeCode >> 31) == 1)
            {
                result.NonInterpolatedMovement = true;
                // TODO: non-interpolated movement.

                result.TimeCode &= ~(1 << 31);
            }

            result.Value = W3dAnimationChannelDatum.Parse(reader, channelType);

            return(result);
        }
Esempio n. 5
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        internal static W3dAdaptiveDeltaData Parse(
            BinaryReader reader,
            uint numFrames,
            W3dAnimationChannelType type,
            int vectorLength,
            W3dAdaptiveDeltaBitCount bitCount)
        {
            var count = (numFrames + 15) >> 4;

            // First read all initial values
            var result = new W3dAdaptiveDeltaData
            {
                BitCount     = bitCount,
                VectorLength = vectorLength,
                InitialDatum = W3dAnimationChannelDatum.Parse(reader, type)
            };

            var numBits = (int)bitCount;

            // Then read the interleaved delta blocks
            var deltaBlocks = new W3dAdaptiveDeltaBlock[count * vectorLength];

            for (var i = 0; i < count; i++)
            {
                for (var j = 0; j < vectorLength; j++)
                {
                    deltaBlocks[(i * vectorLength) + j] = W3dAdaptiveDeltaBlock.Parse(
                        reader,
                        j,
                        numBits);
                }
            }
            result.DeltaBlocks = deltaBlocks;

            return(result);
        }