Inheritance diagram for TWKBWriter.PrecisionWriter:

Collaboration diagram for TWKBWriter.PrecisionWriter:

Public Member Functions
PrecisionWriter	calculate (final Coordinate[] coordinates, final int maxPrecision)

void	writeExtendedPrecision (final DataOutput output) throws IOException

void	writePoint (final Coordinate coordinate, final DataOutput output) throws IOException

void	writePointArray (final Coordinate[] coordinates, final DataOutput output) throws IOException

Protected Member Functions
void	checkCoordinate (final Coordinate c)

void	finalize (final int maxPrecision)

Protected Attributes
double	precisionMultiplier = 0

Private Attributes
int	precision = TWKBUtils.MIN_COORD_PRECISION

Member Function Documentation

◆ calculate()

PrecisionWriter calculate	(	final Coordinate[]	coordinates,
		final int	maxPrecision
	)

Reimplemented in TWKBWriter.ExtendedPrecisionWriter.

                                                                                              {
       for (int i = 0; i < coordinates.length; i++) {
         checkCoordinate(coordinates[i]);
       }
       finalize(maxPrecision);
       return this;
     }

References TWKBWriter.PrecisionWriter.checkCoordinate(), TWKBWriter.PrecisionWriter.finalize(), and TWKBWriter.maxPrecision.

Referenced by TWKBWriter.write().

◆ checkCoordinate()

void checkCoordinate ( final Coordinate c )

protected

Reimplemented in TWKBWriter.ExtendedPrecisionWriter.

                                                        {
       final BigDecimal xCoord = new BigDecimal(Double.toString(c.getX())).stripTrailingZeros();
       precision = Math.max(xCoord.scale(), precision);
       final BigDecimal yCoord = new BigDecimal(Double.toString(c.getY())).stripTrailingZeros();
       precision = Math.max(yCoord.scale(), precision);
     }

References TWKBWriter.PrecisionWriter.precision.

Referenced by TWKBWriter.PrecisionWriter.calculate().

◆ finalize()

void finalize ( final int maxPrecision )

protected

Reimplemented in TWKBWriter.ExtendedPrecisionWriter.

                                                     {
       precision = Math.min(maxPrecision, precision);
       precisionMultiplier = Math.pow(10, precision);
     }

References TWKBWriter.maxPrecision, TWKBWriter.PrecisionWriter.precision, and TWKBWriter.PrecisionWriter.precisionMultiplier.

Referenced by TWKBWriter.PrecisionWriter.calculate().

◆ writeExtendedPrecision()

void writeExtendedPrecision ( final DataOutput output ) throws IOException

Reimplemented in TWKBWriter.ExtendedPrecisionWriter.

                                                                                    {
       return;
     }

Referenced by TWKBWriter.write().

◆ writePoint()

void writePoint	(	final Coordinate	coordinate,
		final DataOutput	output
	)		throws IOException

Reimplemented in TWKBWriter.ExtendedPrecisionWriter.

                            {
       Varint.writeSignedVarLong(Math.round(coordinate.getX() * precisionMultiplier), output);
       Varint.writeSignedVarLong(Math.round(coordinate.getY() * precisionMultiplier), output);
     }

References TWKBWriter.PrecisionWriter.precisionMultiplier.

◆ writePointArray()

void writePointArray	(	final Coordinate[]	coordinates,
		final DataOutput	output
	)		throws IOException

Reimplemented in TWKBWriter.ExtendedPrecisionWriter.

                            {
       long lastX = 0;
       long lastY = 0;
       Varint.writeUnsignedVarInt(coordinates.length, output);
       for (final Coordinate c : coordinates) {
         final long x = Math.round(c.getX() * precisionMultiplier);
         final long y = Math.round(c.getY() * precisionMultiplier);
         Varint.writeSignedVarLong(x - lastX, output);
         Varint.writeSignedVarLong(y - lastY, output);
         lastX = x;
         lastY = y;
       }
     }