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package org.djutils.serialization.serializers;
import org.djunits.unit.Unit;
import org.djunits.unit.scale.IdentityScale;
import org.djunits.value.ValueRuntimeException;
import org.djunits.value.storage.StorageType;
import org.djunits.value.vdouble.matrix.base.DoubleMatrix;
import org.djunits.value.vdouble.matrix.base.DoubleMatrixInterface;
import org.djunits.value.vdouble.matrix.data.DoubleMatrixData;
import org.djunits.value.vdouble.scalar.base.DoubleScalarInterface;
import org.djunits.value.vdouble.vector.base.DoubleVectorInterface;
import org.djutils.serialization.EndianUtil;
import org.djutils.serialization.FieldTypes;
import org.djutils.serialization.SerializationException;
/**
* (De)serializes a DJUNITS DoubleMatrix.
*
* Copyright (c) 2019-2023 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved.
* BSD-style license. See DJUNITS License.
*
* @author Alexander Verbraeck
* @param the unit type
* @param the scalar type
* @param the vector type
* @param the matrix type
*/
public class DoubleMatrixSerializer, S extends DoubleScalarInterface,
V extends DoubleVectorInterface, M extends DoubleMatrixInterface>
extends ArrayOrMatrixWithUnitSerializer
{
/** */
public DoubleMatrixSerializer()
{
super(FieldTypes.DOUBLE_64_UNIT_MATRIX, "Djunits_DoubleMatrix", 2);
}
/** {@inheritDoc} */
@Override
public int size(final M adm) throws SerializationException
{
try
{
return 4 + 4 + 2 + 8 * adm.rows() * adm.cols();
}
catch (ValueRuntimeException e)
{
throw new SerializationException(e);
}
}
/** {@inheritDoc} */
@Override
public void serialize(final M adm, final byte[] buffer, final Pointer pointer, final EndianUtil endianUtil)
throws SerializationException
{
try
{
endianUtil.encodeInt(adm.rows(), buffer, pointer.getAndIncrement(4));
endianUtil.encodeInt(adm.cols(), buffer, pointer.getAndIncrement(4));
encodeUnit(adm.getDisplayUnit(), buffer, pointer, endianUtil);
for (int i = 0; i < adm.rows(); i++)
{
for (int j = 0; j < adm.cols(); j++)
{
endianUtil.encodeDouble(adm.get(i, j).getSI(), buffer, pointer.getAndIncrement(8));
}
}
}
catch (ValueRuntimeException e)
{
throw new SerializationException(e);
}
}
/** {@inheritDoc} */
@Override
public M deSerialize(final byte[] buffer, final Pointer pointer, final EndianUtil endianUtil) throws SerializationException
{
try
{
int height = endianUtil.decodeInt(buffer, pointer.getAndIncrement(4));
int width = endianUtil.decodeInt(buffer, pointer.getAndIncrement(4));
Unit> unit = getUnit(buffer, pointer, endianUtil);
double[][] array = new double[height][width];
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
array[i][j] = endianUtil.decodeDouble(buffer, pointer.getAndIncrement(8));
}
}
DoubleMatrixData fvd = DoubleMatrixData.instantiate(array, IdentityScale.SCALE, StorageType.DENSE);
return DoubleMatrix.instantiateAnonymous(fvd, unit);
}
catch (ValueRuntimeException exception)
{
throw new SerializationException(exception);
}
}
}