/** Add a ring to a builder */
private void addRing(LineString r, Geobuf.Data.Geometry.Builder builder) {
// skip last point, same as first
builder.addLengths(r.getNumPoints() - 1);
long x, y, prevX = 0, prevY = 0;
// last point is same as first, skip
for (int i = 0; i < r.getNumPoints() - 1; i++) {
// delta code
Coordinate coord = r.getCoordinateN(i);
// note that roundoff errors do not accumulate
x = (long) (coord.x * precisionMultiplier);
y = (long) (coord.y * precisionMultiplier);
builder.addCoords(x - prevX);
builder.addCoords(y - prevY);
prevX = x;
prevY = y;
}
}
/**
* Gets the second {@link Coordinate} of the current segment. (the coordinate of the next vertex).
* If the iterator is at the end of a line, <code>null</code> is returned.
*
* @return a {@link Coordinate} or <code>null</code>
*/
public Coordinate getSegmentEnd() {
if (vertexIndex < getLine().getNumPoints() - 1)
return currentLine.getCoordinateN(vertexIndex + 1);
return null;
}
/**
* Gets the first {@link Coordinate} of the current segment. (the coordinate of the current
* vertex).
*
* @return a {@link Coordinate}
*/
public Coordinate getSegmentStart() {
return currentLine.getCoordinateN(vertexIndex);
}
