Examples of com.vividsolutions.jts.geom.CoordinateSequence

com.vividsolutions.jts.geom.CoordinateSequence
The internal representation of a list of coordinates inside a Geometry.
There are some cases in which you might want Geometries to store their points using something other than the JTS Coordinate class. For example, you may want to experiment with another implementation, such as an array of x's and an array of y's. Or you might want to use your own coordinate class, one that supports extra attributes like M-values.
You can do this by implementing the CoordinateSequence and CoordinateSequenceFactory interfaces. You would then create a GeometryFactory parameterized by your CoordinateSequenceFactory, and use this GeometryFactory to create new Geometries. All of these new Geometries will use your CoordinateSequence implementation.
For an example, see the code for {@link com.vividsolutions.jtsexample.geom.TwoArrayCoordinateSequenceExample}. @see DefaultCoordinateSequenceFactory @see TwoArrayCoordinateSequenceFactory @version 1.7

    public static CoordinateSequence coordiantes(CoordinateSequenceFactory f,
        OrdinateList x, OrdinateList y, OrdinateList z, OrdinateList m) {
        final int LENGTH = x.size();
        // TODO org.geotools.geometry.jts.LiteCoordinateSequenceFactory does not support 4 dimensions!
        // CoordinateSequence cs = f.create(LENGTH, z == null ? 3: 4);
        CoordinateSequence cs = f.create(LENGTH, z == null ? 2: 3);


        if (z != null) {
            for (int i = 0; i < LENGTH; i++) {
                cs.setOrdinate(i, 0, x.getDouble(i));
                cs.setOrdinate(i, 1, y.getDouble(i));
                cs.setOrdinate(i, 2, z.getDouble(i));
                // cs.setOrdinate(i, 3, m.getDouble(i));
            }
        } else {
            for (int i = 0; i < LENGTH; i++) {
                cs.setOrdinate(i, 0, x.getDouble(i));
                cs.setOrdinate(i, 1, y.getDouble(i));
                // cs.setOrdinate(i, 2, m.getDouble(i));
            }
        }


        return cs;

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        final int L = SDO.L(GTYPE);
        final int TT = SDO.TT(GTYPE);
        double[] list;
        double[][] lists;


        CoordinateSequence coords;




        if ((L == 0) && (TT == 01) && (point != null) && (elemInfo == null)) {
            // Single Point Type Optimization
            coords = SDO.coordinates(gf.getCoordinateSequenceFactory(), GTYPE,

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            return null;
            


        LineString result;
        if (etype == ETYPE.LINE && INTERPRETATION == 1) {
            CoordinateSequence subList = subList(gf.getCoordinateSequenceFactory(), coords, GTYPE,
                    elemInfo, triplet, compoundElement);
            result = gf.createLineString(subList);
        } else if (etype == ETYPE.LINE && INTERPRETATION == 2) {
            CoordinateSequence subList = subList(gf.getCoordinateSequenceFactory(), coords, GTYPE,
                    elemInfo, triplet, compoundElement);
            result = gf.createCurvedGeometry(subList);
        } else if (etype == ETYPE.COMPOUND) {
            int triplets = INTERPRETATION;
            List<LineString> components = new ArrayList<>(triplets);

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            ring = gf.createLinearRing(subList(gf.getCoordinateSequenceFactory(), coords, GTYPE,
                    elemInfo, triplet, false));
        } else if (INTERPRETATION == 3) {
            // rectangle does not maintain measures
            //
            CoordinateSequence ext = subList(gf.getCoordinateSequenceFactory(), coords, GTYPE,
                    elemInfo, triplet, false);
            Coordinate min = ext.getCoordinate(0);
            Coordinate max = ext.getCoordinate(1);
            ring = gf.createLinearRing(new Coordinate[] {
                        min, new Coordinate(max.x, min.y), max,
                        new Coordinate(min.x, max.y), min
                    });
        } else if (INTERPRETATION == 4) {
            // rectangle does not maintain measures
            //
            CoordinateSequence ext = subList(gf.getCoordinateSequenceFactory(), coords, GTYPE,
                    elemInfo, triplet, false);
            if (ext.size() != 3) {
                throw new IllegalArgumentException(
                        "The coordinate sequence for the circle creation must contain 3 points, the one at hand contains "
                                + ext.size() + " instead");
            }
            double[] cp = new double[ext.size() * 2 + 2];
            for (int i = 0; i < ext.size(); i++) {
                cp[i * 2] = ext.getOrdinate(i, 0);
                cp[i * 2 + 1] = ext.getOrdinate(i, 1);
            }
            // figure out the other point
            CircularArc arc = new CircularArc(cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]);
            ring = CurvedGeometries.toCircle(arc, gf, gf.getTolerance());
        } else {

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    //
    // Utility Methods
    //
    protected LinearRing ring(double coords[]) {
        CoordinateSequence seq = coords(coords);
        return gf.createLinearRing(seq);
    }

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    }


    public void testParse() throws Exception {
        buildDocument("<coordinates>1,1 2,2</coordinates>");


        CoordinateSequence cs = (CoordinateSequence) parse();


        assertEquals(2, cs.size());
        assertEquals(new Coordinate(1, 1), cs.getCoordinate(0));
        assertEquals(new Coordinate(2, 2), cs.getCoordinate(1));


        buildDocument("<coordinates>1,1,1" + " 2,2,2" + " </coordinates>");
        cs = (CoordinateSequence) parse();


        assertEquals(2, cs.size());
        assertEquals(new Coordinate(1, 1), cs.getCoordinate(0));
        assertEquals(1d, cs.getCoordinate(0).z, 0.1);
        assertEquals(new Coordinate(2, 2), cs.getCoordinate(1));
        assertEquals(2d, cs.getCoordinate(1).z, 0.1);
    }

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        assertEquals(new Coordinate(2, 2), cs.getCoordinate(1));
        assertEquals(2d, cs.getCoordinate(1).z, 0.1);
    }
    
    public void testEncode() throws Exception {
        CoordinateSequence cs = CoordinateArraySequenceFactory.instance().create(
            new Coordinate[]{ new Coordinate(1,1), new Coordinate(2,2) } 
        );
        Document dom = encode( cs, KML.coordinates );
        assertEquals( "1.0,1.0 2.0,2.0", dom.getDocumentElement().getFirstChild().getTextContent() );
    }

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            return c;
        }


        // handle coordinate sequence dimension correctly
        int size = toIndex - fromIndex;
        CoordinateSequence newSeq = factory.create(size, sequence.getDimension());
        CoordinateSequences.copy(sequence, fromIndex, newSeq, 0, size);
        return newSeq;
     }

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            return c;
        } else // else CoordinateSequence
        {
            // handle coordinate sequence dimension correctly
            CoordinateSequence revSeq = factory.create(sequence);
            CoordinateSequences.reverse(revSeq);
            return revSeq;
        }
    }

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            buffer.append(",NULL,MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,1),");
            buffer.append("MDSYS.SDO_ORDINATE_ARRAY(");


        CoordinateSequenceFactory fact = polygon.getFactory().getCoordinateSequenceFactory();
        CoordinateSequence exterior = polygon.getExteriorRing().getCoordinateSequence();
        CoordinateSequence coordSeq = SDO.counterClockWise(fact, exterior);


            for (int i = 0, size = coordSeq.size(); i < size; i++) {
        Coordinate cur = coordSeq.getCoordinate(i);
                buffer.append(cur.x);
                buffer.append(",");
                buffer.append(cur.y);


                if (i != (size - 1)) {

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