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This geoLatte-geom library offers a geometry model that conforms to the OGC Simple Features for SQL specification.

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package org.geolatte.geom.codec;

import org.geolatte.geom.ByteBuffer;
import org.geolatte.geom.ByteOrder;
import org.geolatte.geom.Geometry;
import org.geolatte.geom.Position;

class Sfa110WkbDialect extends WkbDialect {

    public final static Sfa110WkbDialect INSTANCE = new Sfa110WkbDialect();

    protected Sfa110WkbDialect() {

    }

    protected  int getPositionSize(Geometry
 geom) {
        return 2 * ByteBuffer.DOUBLE_SIZE;
    }

    @Override
    
 BaseWkbVisitor
 mkVisitor(Geometry
 geom, ByteOrder bo) {
        ByteBuffer buffer = mkByteBuffer(geom, bo);
        return new SFA110WkbVisitor<>(buffer, this);
    }
}

class SFA110WkbVisitor
 extends BaseWkbVisitor {

    SFA110WkbVisitor(ByteBuffer byteBuffer, WkbDialect dialect) {
        super(byteBuffer, dialect);
    }

    @Override
    protected void writePoint(double[] coordinates, ByteBuffer output) {
        output.putDouble(coordinates[0]);
        output.putDouble(coordinates[1]);
    }
}