How to use

getPoint

method

in

com.esri.core.geometry.MultiPath

@SqlNullable
@Description("Returns the last point of a LINESTRING geometry as a Point")
@ScalarFunction("ST_EndPoint")
@SqlType(GEOMETRY_TYPE_NAME)
public static Slice stEndPoint(@SqlType(GEOMETRY_TYPE_NAME) Slice input)
{
  OGCGeometry geometry = deserialize(input);
  validateType("ST_EndPoint", geometry, EnumSet.of(LINE_STRING));
  if (geometry.isEmpty()) {
    return null;
  }
  MultiPath lines = (MultiPath) geometry.getEsriGeometry();
  SpatialReference reference = geometry.getEsriSpatialReference();
  return serialize(createFromEsriGeometry(lines.getPoint(lines.getPointCount() - 1), reference));
}

@SqlNullable
@Description("Returns TRUE if the LineString or Multi-LineString's start and end points are coincident")
@ScalarFunction("ST_IsClosed")
@SqlType(BOOLEAN)
public static Boolean stIsClosed(@SqlType(GEOMETRY_TYPE_NAME) Slice input)
{
  OGCGeometry geometry = deserialize(input);
  validateType("ST_IsClosed", geometry, EnumSet.of(LINE_STRING, MULTI_LINE_STRING));
  MultiPath lines = (MultiPath) geometry.getEsriGeometry();
  int pathCount = lines.getPathCount();
  for (int i = 0; i < pathCount; i++) {
    Point start = lines.getPoint(lines.getPathStart(i));
    Point end = lines.getPoint(lines.getPathEnd(i) - 1);
    if (!end.equals(start)) {
      return false;
    }
  }
  return true;
}

double px = path.getPoint(i).getX();
double py = path.getPoint(i).getY();

@SqlNullable
@Description("Returns the first point of a LINESTRING geometry as a Point")
@ScalarFunction("ST_StartPoint")
@SqlType(GEOMETRY_TYPE_NAME)
public static Slice stStartPoint(@SqlType(GEOMETRY_TYPE_NAME) Slice input)
{
  OGCGeometry geometry = deserialize(input);
  validateType("ST_StartPoint", geometry, EnumSet.of(LINE_STRING));
  if (geometry.isEmpty()) {
    return null;
  }
  MultiPath lines = (MultiPath) geometry.getEsriGeometry();
  SpatialReference reference = geometry.getEsriSpatialReference();
  return serialize(createFromEsriGeometry(lines.getPoint(0), reference));
}

@SqlNullable
@Description("Returns the last point of a LINESTRING geometry as a Point")
@ScalarFunction("ST_EndPoint")
@SqlType(GEOMETRY_TYPE_NAME)
public static Slice stEndPoint(@SqlType(GEOMETRY_TYPE_NAME) Slice input)
{
  OGCGeometry geometry = deserialize(input);
  validateType("ST_EndPoint", geometry, EnumSet.of(LINE_STRING));
  if (geometry.isEmpty()) {
    return null;
  }
  MultiPath lines = (MultiPath) geometry.getEsriGeometry();
  SpatialReference reference = geometry.getEsriSpatialReference();
  return serialize(createFromEsriGeometry(lines.getPoint(lines.getPointCount() - 1), reference));
}

  @Override
  public OGCPoint pointN(int n) {
    int nn;
    if (n == multiPath.getPathSize(0)) {
      nn = multiPath.getPathStart(0);
    } else
      nn = multiPath.getPathStart(0) + n;

    return (OGCPoint) OGCGeometry.createFromEsriGeometry(
        multiPath.getPoint(nn), esriSR);
  }
}

@SqlNullable
@Description("Returns the last point of a LINESTRING geometry as a Point")
@ScalarFunction("ST_EndPoint")
@SqlType(GEOMETRY_TYPE_NAME)
public static Slice stEndPoint(@SqlType(GEOMETRY_TYPE_NAME) Slice input)
{
  OGCGeometry geometry = deserialize(input);
  validateType("ST_EndPoint", geometry, EnumSet.of(LINE_STRING));
  if (geometry.isEmpty()) {
    return null;
  }
  MultiPath lines = (MultiPath) geometry.getEsriGeometry();
  SpatialReference reference = geometry.getEsriSpatialReference();
  return serialize(createFromEsriGeometry(lines.getPoint(lines.getPointCount() - 1), reference));
}

  @Override
  public OGCPoint pointN(int n) {
    int nn;
    if (n == multiPath.getPathSize(0)) {
      nn = multiPath.getPathStart(0);
    } else
      nn = multiPath.getPathStart(0) + n;

    return (OGCPoint) OGCGeometry.createFromEsriGeometry(
        multiPath.getPoint(nn), esriSR);
  }
}

    spatialReference = SpatialReference.create(wkid);
  return GeometryUtils.geometryToEsriShapeBytesWritable(OGCGeometry.createFromEsriGeometry(lines.getPoint(lines.getPointCount()-1),
                                               spatialReference));
} else {

/**
 * Returns the specified Point N in this LineString.
 * @param n The 0 based index of the Point.
 */
public OGCPoint pointN(int n) {
  int nn;
  if (multiPath.isClosedPath(0) && n == multiPath.getPathSize(0)) {
    nn = multiPath.getPathStart(0);
  } else
    nn = n + multiPath.getPathStart(0);
  return (OGCPoint) OGCGeometry.createFromEsriGeometry(
      multiPath.getPoint(nn), esriSR);
}

MultiPath lines = (MultiPath)(esriGeom);
try {
  pn = lines.getPoint(idx);
} catch (Exception e) {
  LogUtils.Log_InvalidIndex(LOG, idx+1, 1, lines.getPointCount());

/**
 * Returns the specified Point N in this LineString.
 * @param n The 0 based index of the Point.
 */
public OGCPoint pointN(int n) {
  int nn;
  if (multiPath.isClosedPath(0) && n == multiPath.getPathSize(0)) {
    nn = multiPath.getPathStart(0);
  } else
    nn = n + multiPath.getPathStart(0);
  return (OGCPoint) OGCGeometry.createFromEsriGeometry(
      multiPath.getPoint(nn), esriSR);
}

@SqlNullable
@Description("Returns TRUE if the LineString or Multi-LineString's start and end points are coincident")
@ScalarFunction("ST_IsClosed")
@SqlType(BOOLEAN)
public static Boolean stIsClosed(@SqlType(GEOMETRY_TYPE_NAME) Slice input)
{
  OGCGeometry geometry = deserialize(input);
  validateType("ST_IsClosed", geometry, EnumSet.of(LINE_STRING, MULTI_LINE_STRING));
  MultiPath lines = (MultiPath) geometry.getEsriGeometry();
  int pathCount = lines.getPathCount();
  for (int i = 0; i < pathCount; i++) {
    Point start = lines.getPoint(lines.getPathStart(i));
    Point end = lines.getPoint(lines.getPathEnd(i) - 1);
    if (!end.equals(start)) {
      return false;
    }
  }
  return true;
}

@SqlNullable
@Description("Returns TRUE if the LineString or Multi-LineString's start and end points are coincident")
@ScalarFunction("ST_IsClosed")
@SqlType(BOOLEAN)
public static Boolean stIsClosed(@SqlType(GEOMETRY_TYPE_NAME) Slice input)
{
  OGCGeometry geometry = deserialize(input);
  validateType("ST_IsClosed", geometry, EnumSet.of(LINE_STRING, MULTI_LINE_STRING));
  MultiPath lines = (MultiPath) geometry.getEsriGeometry();
  int pathCount = lines.getPathCount();
  for (int i = 0; i < pathCount; i++) {
    Point start = lines.getPoint(lines.getPathStart(i));
    Point end = lines.getPoint(lines.getPathEnd(i) - 1);
    if (!end.equals(start)) {
      return false;
    }
  }
  return true;
}

@SqlNullable
@Description("Returns the first point of a LINESTRING geometry as a Point")
@ScalarFunction("ST_StartPoint")
@SqlType(GEOMETRY_TYPE_NAME)
public static Slice stStartPoint(@SqlType(GEOMETRY_TYPE_NAME) Slice input)
{
  OGCGeometry geometry = deserialize(input);
  validateType("ST_StartPoint", geometry, EnumSet.of(LINE_STRING));
  if (geometry.isEmpty()) {
    return null;
  }
  MultiPath lines = (MultiPath) geometry.getEsriGeometry();
  SpatialReference reference = geometry.getEsriSpatialReference();
  return serialize(createFromEsriGeometry(lines.getPoint(0), reference));
}

@SqlNullable
@Description("Returns the first point of a LINESTRING geometry as a Point")
@ScalarFunction("ST_StartPoint")
@SqlType(GEOMETRY_TYPE_NAME)
public static Slice stStartPoint(@SqlType(GEOMETRY_TYPE_NAME) Slice input)
{
  OGCGeometry geometry = deserialize(input);
  validateType("ST_StartPoint", geometry, EnumSet.of(LINE_STRING));
  if (geometry.isEmpty()) {
    return null;
  }
  MultiPath lines = (MultiPath) geometry.getEsriGeometry();
  SpatialReference reference = geometry.getEsriSpatialReference();
  return serialize(createFromEsriGeometry(lines.getPoint(0), reference));
}

boolean rslt = true;
for (int ix = 0; rslt && ix < nPaths; ix++) {
  Point p0 = lines.getPoint(lines.getPathStart(ix));
  Point pf = lines.getPoint(lines.getPathEnd(ix)-1);

int curPt = lines.getPathStart(ix);
int pastPt = lines.getPathEnd(ix);
Point fromPt = lines.getPoint(curPt);
Point toPt = null;
for (int vx = curPt+1; vx < pastPt; vx++) {
  toPt = lines.getPoint(vx);
  length += GeometryEngine.geodesicDistanceOnWGS84(fromPt, toPt);
  fromPt = toPt;

    spatialReference = SpatialReference.create(wkid);
  return GeometryUtils.geometryToEsriShapeBytesWritable(OGCGeometry.createFromEsriGeometry(lines.getPoint(0),
                                               spatialReference));
} else {