/**
* Retrieves user-submitted videos from YouTube and returns the
* result as a JSON array.
*/
public function getObservationDateVideos()
{
include_once HV_ROOT_DIR . '/../src/Database/MovieDatabase.php';
include_once HV_ROOT_DIR . '/../src/Movie/HelioviewerMovie.php';
include_once HV_ROOT_DIR . '/../lib/alphaID/alphaID.php';
include_once HV_ROOT_DIR . '/../src/Helper/HelioviewerLayers.php';
$movies = new Database_MovieDatabase();
// Default options
$defaults = array('num' => 10, 'skip' => 0, 'date' => getUTCDateString());
$opts = array_replace($defaults, $this->_options);
// Get a list of recent videos
$videos = array();
foreach ($movies->getSharedVideosByTime($opts['num'], $opts['skip'], $opts['date']) as $video) {
$youtubeId = $video['youtubeId'];
$movieId = (int) $video['movieId'];
// Convert id
$publicId = alphaID($movieId, false, 5, HV_MOVIE_ID_PASS);
// Load movie
$movie = new Movie_HelioviewerMovie($publicId);
$layers = new Helper_HelioviewerLayers($video['dataSourceString']);
$layersArray = $layers->toArray();
$name = '';
if (count($layersArray) > 0) {
foreach ($layersArray as $layer) {
$name .= $layer['name'] . ', ';
}
}
$name = substr($name, 0, -2);
array_push($videos, array('id' => $publicId, 'url' => 'http://www.youtube.com/watch?v=' . $youtubeId, 'thumbnails' => array('small' => $video['thumbnail'], 'medium' => $video['thumbnail']), 'published' => $video['timestamp'], 'title' => $name . ' (' . $video['startDate'] . ' - ' . $video['endDate'] . ' UTC)', 'description' => $video['description'], 'keywords' => $video['keywords'], 'imageScale' => $video['imageScale'], 'dataSourceString' => $video['dataSourceString'], 'eventSourceString' => $video['eventSourceString'], 'movieLength' => $video['movieLength'], 'width' => $video['width'], 'height' => $video['height'], 'startDate' => $video['startDate'], 'endDate' => $video['endDate']));
}
$this->_printJSON(json_encode($videos));
}
/**
* Re-generate a screenshot using the metadata stored in the
* `screenshots` database table.
*
* @return
*/
public function reTakeScreenshot($screenshotId)
{
include_once HV_ROOT_DIR . '/../src/Database/ImgIndex.php';
include_once HV_ROOT_DIR . '/../src/Image/Composite/HelioviewerScreenshot.php';
include_once HV_ROOT_DIR . '/../src/Helper/HelioviewerLayers.php';
include_once HV_ROOT_DIR . '/../src/Helper/HelioviewerEvents.php';
include_once HV_ROOT_DIR . '/../src/Helper/RegionOfInterest.php';
// Default options
$defaults = array('force' => false, 'display' => false);
$options = array_replace($defaults, $this->_params);
$screenshotId = intval($screenshotId);
if ($screenshotId <= 0) {
throw new Exception('Value of screenshot "id" parameter is invalid.', 25);
}
$imgIndex = new Database_ImgIndex();
$metaData = $imgIndex->getScreenshotMetadata($screenshotId);
$options['timestamp'] = $metaData['timestamp'];
$options['observationDate'] = $metaData['observationDate'];
$roiArr = explode(',', str_replace(array('POLYGON((', '))'), '', $metaData['roi']));
$roi = array();
foreach ($roiArr as $index => $coordStr) {
$coordArr = explode(' ', $coordStr);
if ($index === 0) {
$x1 = $coordArr[0];
$y1 = $coordArr[1];
$x2 = $coordArr[0];
$y2 = $coordArr[1];
} else {
if ($coordArr[0] <= $x1 && $coordArr[1] <= $y1) {
$x1 = $coordArr[0];
$y1 = $coordArr[1];
} else {
if ($coordArr[0] >= $x2 && $coordArr[1] >= $y2) {
$x2 = $coordArr[0];
$y2 = $coordArr[1];
}
}
}
}
$roi = new Helper_RegionOfInterest($x1, $y1, $x2, $y2, $metaData['imageScale']);
// Data Layers
$layers = new Helper_HelioviewerLayers($metaData['dataSourceString']);
// Limit screenshot to five layers
if ($layers->length() < 1 || $layers->length() > 5) {
throw new Exception('Invalid layer choices! You must specify 1-5 comma-separated ' . 'layer names.', 22);
}
// Event Layers
$events = new Helper_HelioviewerEvents($metaData['eventSourceString']);
// Create the screenshot
$screenshot = new Image_Composite_HelioviewerScreenshot($layers, $events, (bool) $metaData['eventsLabels'], (bool) $metaData['scale'], $metaData['scaleType'], $metaData['scaleX'], $metaData['scaleY'], $metaData['observationDate'], $roi, $options);
}