Examples with ChannelReader com.revolsys.io.channels.ChannelReader used on opensource projects

Example 31 with ChannelReader

use of com.revolsys.io.channels.ChannelReader in project com.revolsys.open by revolsys.

the class EsriCoordinateSystems method getGeographicCoordinateSystem.

public static GeographicCoordinateSystem getGeographicCoordinateSystem(final int id) {
    GeographicCoordinateSystem coordinateSystem = (GeographicCoordinateSystem) COORDINATE_SYSTEM_BY_ID.get(id);
    if (coordinateSystem == null) {
        try (final ChannelReader reader = ChannelReader.newChannelReader("classpath:CoordinateSystems/esri/Geographic.cs")) {
            while (true) {
                final int coordinateSystemId = reader.getInt();
                final String csName = reader.getStringUtf8ByteCount();
                final String datumName = reader.getStringUtf8ByteCount();
                final String spheroidName = reader.getStringUtf8ByteCount();
                final double semiMajorAxis = reader.getDouble();
                final double inverseFlattening = reader.getDouble();
                final String primeMeridianName = reader.getStringUtf8ByteCount();
                final double longitude = reader.getDouble();
                final String angularUnitName = reader.getStringUtf8ByteCount();
                final double conversionFactor = reader.getDouble();
                if (id == coordinateSystemId) {
                    final Ellipsoid ellipsoid = new Ellipsoid(spheroidName, semiMajorAxis, inverseFlattening, null);
                    final PrimeMeridian primeMeridian = new PrimeMeridian(primeMeridianName, longitude, null);
                    final GeodeticDatum geodeticDatum = new GeodeticDatum(null, datumName, null, false, ellipsoid, primeMeridian);
                    AngularUnit angularUnit = ANGULAR_UNITS_BY_NAME.get(angularUnitName);
                    if (angularUnit == null) {
                        angularUnit = new AngularUnit(angularUnitName, conversionFactor, null);
                        ANGULAR_UNITS_BY_NAME.put(angularUnitName, angularUnit);
                    }
                    final Authority authority = new BaseAuthority("ESRI", coordinateSystemId);
                    coordinateSystem = new GeographicCoordinateSystem(coordinateSystemId, csName, geodeticDatum, primeMeridian, angularUnit, null, authority);
                    COORDINATE_SYSTEM_BY_ID.put(id, coordinateSystem);
                    return coordinateSystem;
                }
            }
        } catch (final WrappedException e) {
            if (Exceptions.isException(e, EOFException.class)) {
                return null;
            } else {
                Logs.error("Cannot load coordinate system=" + id, e);
                throw e;
            }
        }
    }
    return coordinateSystem;
}

Example 32 with ChannelReader

use of com.revolsys.io.channels.ChannelReader in project com.revolsys.open by revolsys.

the class LasPointCloud method forEachPoint.

@Override
public void forEachPoint(final Consumer<? super LasPoint> action) {
    final long pointCount = getPointCount();
    try {
        final ChannelReader reader = this.reader;
        if (reader == null) {
            this.points.forEach(action);
        } else if (pointCount == 0) {
            this.reader = null;
        } else if (this.header.isLaszip()) {
            forEachPointLaz(action);
        } else {
            try (BaseCloseable closable = this) {
                final LasPointFormat pointFormat = getPointFormat();
                for (int i = 0; i < pointCount; i++) {
                    final LasPoint point = pointFormat.readLasPoint(this, reader);
                    action.accept(point);
                }
            }
        }
    } finally {
        this.reader = null;
    }
}

Example 33 with ChannelReader

use of com.revolsys.io.channels.ChannelReader in project com.revolsys.open by revolsys.

the class ArithmeticDecoder method reset.

public void reset() {
    this.length = AC_MAX_LENGTH;
    final ChannelReader reader = this.reader;
    int value = (reader.getByte() & 0xff) << 24;
    value |= (reader.getByte() & 0xff) << 16;
    value |= (reader.getByte() & 0xff) << 8;
    value |= reader.getByte() & 0xff;
    this.value = value;
}

Example 34 with ChannelReader

use of com.revolsys.io.channels.ChannelReader in project com.revolsys.open by revolsys.

the class AbstractScaledIntegerPointCloudGeometryReader method initDo.

@Override
protected void initDo() {
    super.initDo();
    final ChannelReader reader = this.resource.newChannelReader(this.byteBuffer);
    this.reader = reader;
    if (reader == null) {
        this.exists = false;
    } else {
        this.exists = true;
        // File
        final String fileType = reader.getString(4, StandardCharsets.UTF_8);
        // type
        if (!ScaledIntegerPointCloud.FILE_TYPE_HEADER.equals(fileType)) {
            throw new IllegalArgumentException("File must start with the text: " + ScaledIntegerPointCloud.FILE_TYPE_HEADER + " not " + fileType);
        }
        @SuppressWarnings("unused") final short version = reader.getShort();
        @SuppressWarnings("unused") final short flags = reader.getShort();
        this.geometryFactory = GeometryFactory.readOffsetScaled3d(reader);
    }
}