package com.ximple.eofms.util;

import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.CoordinateSequence;
import com.vividsolutions.jts.geom.CoordinateSequenceFilter;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.GeometryFactory;
import com.vividsolutions.jts.util.Assert;

import com.ximple.io.dgn7.GeometryConverter;

public class EPSG3825GeometryConverterDecorator implements GeometryConverterDecorator {
    private GeometryConverter converter;
    private EPSG3825ConvertFilter coordinatesFilter = new EPSG3825ConvertFilter();

    public EPSG3825GeometryConverterDecorator() {
    }

    public GeometryConverter getConverter() {
        return converter;
    }

    public void setConverter(GeometryConverter converter) {
        this.converter = converter;
    }

    protected EPSG3825ConvertFilter getCoordinatesFilter() {
        return coordinatesFilter;
    }

    protected void setCoordinatesFilter(EPSG3825ConvertFilter coordinatesFilter) {
        this.coordinatesFilter = coordinatesFilter;
    }

    public Geometry toGeometry(GeometryFactory factory) {
        if (converter == null) Assert.shouldNeverReachHere();

        coordinatesFilter.reset();

        Geometry geom = converter.toGeometry(factory);
        if (geom == null) return null;
        geom.apply(coordinatesFilter);
        return geom;
    }

    protected class EPSG3825ConvertFilter implements CoordinateSequenceFilter {
        public void filter(CoordinateSequence coordinateSequence, int i) {
            Coordinate pt = coordinateSequence.getCoordinate(i);
            Coordinate pt97 = TWDDatumConverter.fromTM2ToEPSG3825(pt);
            pt.x = pt97.x;
            pt.y = pt97.y;
            pt.z = pt97.z;
        }

        public boolean isDone() {
            return false;
        }

        public boolean isGeometryChanged() {
            return true;
        }

        public void reset() {
        }
    }
}