/**
* Generate an estimate for the date of birth, based on dates of parents/children/spouses
*
* @return Date
*/
public function getEstimatedBirthDate()
{
if (is_null($this->_getEstimatedBirthDate)) {
foreach ($this->getAllBirthDates() as $date) {
if ($date->isOK()) {
$this->_getEstimatedBirthDate = $date;
break;
}
}
if (is_null($this->_getEstimatedBirthDate)) {
$min = array();
$max = array();
$tmp = $this->getDeathDate();
if ($tmp->isOK()) {
$min[] = $tmp->minimumJulianDay() - $this->tree->getPreference('MAX_ALIVE_AGE') * 365;
$max[] = $tmp->maximumJulianDay();
}
foreach ($this->getChildFamilies() as $family) {
$tmp = $family->getMarriageDate();
if ($tmp->isOK()) {
$min[] = $tmp->maximumJulianDay() - 365 * 1;
$max[] = $tmp->minimumJulianDay() + 365 * 30;
}
if ($parent = $family->getHusband()) {
$tmp = $parent->getBirthDate();
if ($tmp->isOK()) {
$min[] = $tmp->maximumJulianDay() + 365 * 15;
$max[] = $tmp->minimumJulianDay() + 365 * 65;
}
}
if ($parent = $family->getWife()) {
$tmp = $parent->getBirthDate();
if ($tmp->isOK()) {
$min[] = $tmp->maximumJulianDay() + 365 * 15;
$max[] = $tmp->minimumJulianDay() + 365 * 45;
}
}
foreach ($family->getChildren() as $child) {
$tmp = $child->getBirthDate();
if ($tmp->isOK()) {
$min[] = $tmp->maximumJulianDay() - 365 * 30;
$max[] = $tmp->minimumJulianDay() + 365 * 30;
}
}
}
foreach ($this->getSpouseFamilies() as $family) {
$tmp = $family->getMarriageDate();
if ($tmp->isOK()) {
$min[] = $tmp->maximumJulianDay() - 365 * 45;
$max[] = $tmp->minimumJulianDay() - 365 * 15;
}
$spouse = $family->getSpouse($this);
if ($spouse) {
$tmp = $spouse->getBirthDate();
if ($tmp->isOK()) {
$min[] = $tmp->maximumJulianDay() - 365 * 25;
$max[] = $tmp->minimumJulianDay() + 365 * 25;
}
}
foreach ($family->getChildren() as $child) {
$tmp = $child->getBirthDate();
if ($tmp->isOK()) {
$min[] = $tmp->maximumJulianDay() - 365 * ($this->getSex() == 'F' ? 45 : 65);
$max[] = $tmp->minimumJulianDay() - 365 * 15;
}
}
}
if ($min && $max) {
$gregorian_calendar = new GregorianCalendar();
list($year) = $gregorian_calendar->jdToYmd((int) ((max($min) + min($max)) / 2));
$this->_getEstimatedBirthDate = new Date('EST ' . $year);
} else {
$this->_getEstimatedBirthDate = new Date('');
// always return a date object
}
}
}
return $this->_getEstimatedBirthDate;
}
/**
* Calculate the gregorian year for a date. This should NOT be used internally
* within WT - we should keep the code "calendar neutral" to allow support for
* jewish/arabic users. This is only for interfacing with external entities,
* such as the ancestry.com search interface or the dated fact icons.
*
* @return int
*/
public function gregorianYear()
{
if ($this->isOK()) {
$gregorian_calendar = new GregorianCalendar();
list($year) = $gregorian_calendar->jdToYmd($this->julianDay());
return $year;
} else {
return 0;
}
}
