/**
* Composites visible Feature/Event markers, regions, and labels onto
* image.
*
* @param object $imagickImage An Imagick object
*
* @return void
*/
private function _addEventLayer($imagickImage)
{
if ($this->width < 200 || $this->height < 200) {
return;
}
$markerPinPixelOffsetX = 12;
$markerPinPixelOffsetY = 38;
require_once HV_ROOT_DIR . '/../src/Event/HEKAdapter.php';
$hek = new Event_HEKAdapter();
// Query the HEK
$events = $hek->getEvents($this->date, array());
if ($events === false) {
return false;
}
// Lay down all relevant event REGIONS first
$allowedFRMs = $this->events->toArray();
foreach ($events as $index => $event) {
$found = false;
foreach ($allowedFRMs as $j => $frm) {
if ($event['event_type'] == $frm['event_type'] && ($frm['frm_name'] == 'all' || $frm['frm_name'] == str_replace(' ', '_', $event['frm_name']) || strpos($frm['frm_name'], str_replace(' ', '_', $event['frm_name'])) !== false)) {
$found = true;
break;
}
}
if ($found === false) {
continue;
}
if (array_key_exists('hv_poly_width_max_zoom_pixels', $event)) {
$width = round($event['hv_poly_width_max_zoom_pixels'] * ($this->maxPixelScale / $this->roi->imageScale()));
$height = round($event['hv_poly_height_max_zoom_pixels'] * ($this->maxPixelScale / $this->roi->imageScale()));
if ($width >= 1 && $height >= 1) {
$region_polygon = new IMagick(HV_ROOT_DIR . '/' . urldecode($event['hv_poly_url']));
$x = ($event['hv_poly_hpc_x_final'] - $this->roi->left()) / $this->roi->imageScale();
$y = ($event['hv_poly_hpc_y_final'] - $this->roi->top()) / $this->roi->imageScale();
$region_polygon->resizeImage($width, $height, Imagick::FILTER_LANCZOS, 1);
$imagickImage->compositeImage($region_polygon, IMagick::COMPOSITE_DISSOLVE, $x, $y);
}
}
}
if (isset($region_polygon)) {
$region_polygon->destroy();
}
// Now lay down the event MARKERS
foreach ($events as $index => $event) {
$found = false;
$allowedFRMs = $this->events->toArray();
foreach ($allowedFRMs as $j => $frm) {
if ($event['event_type'] == $frm['event_type'] && ($frm['frm_name'] == 'all' || $frm['frm_name'] == str_replace(' ', '_', $event['frm_name']) || strpos($frm['frm_name'], str_replace(' ', '_', $event['frm_name'])) !== false)) {
$found = true;
continue;
}
}
if ($found === false) {
continue;
}
$marker = new IMagick(HV_ROOT_DIR . '/resources/images/eventMarkers/' . $event['event_type'] . '.png');
$x = ($event['hv_hpc_x_final'] - $this->roi->left()) / $this->roi->imageScale() - $markerPinPixelOffsetX;
$y = (-$event['hv_hpc_y_final'] - $this->roi->top()) / $this->roi->imageScale() - $markerPinPixelOffsetY;
$imagickImage->compositeImage($marker, IMagick::COMPOSITE_DISSOLVE, $x, $y);
if ($this->eventsLabels == true) {
$x = ($event['hv_hpc_x_final'] - $this->roi->left()) / $this->roi->imageScale() + 11;
$y = (-$event['hv_hpc_y_final'] - $this->roi->top()) / $this->roi->imageScale() - 24;
$count = 0;
if (!array_key_exists('hv_labels_formatted', $event) || count($event['hv_labels_formatted']) < 1) {
$event['hv_labels_formatted'] = array('Event Type' => $event['concept']);
}
foreach ($event['hv_labels_formatted'] as $key => $value) {
//Fix unicode
$value = str_replace(array('u03b1', 'u03b2', 'u03b3', 'u00b1', 'u00b2'), array('α', 'β', 'γ', '±', '²'), $value);
// Outline words in black
$text = new IMagickDraw();
$text->setTextEncoding('utf-8');
$text->setFont(HV_ROOT_DIR . '/../resources/fonts/DejaVuSans.ttf');
$text->setFontSize(10);
$text->setStrokeColor('#000C');
$text->setStrokeAntialias(true);
$text->setStrokeWidth(3);
$text->setStrokeOpacity(0.3);
$imagickImage->annotateImage($text, $x, $y + $count * 12, 0, $value);
// Write words in white over outline
$text = new IMagickDraw();
$text->setTextEncoding('utf-8');
$text->setFont(HV_ROOT_DIR . '/../resources/fonts/DejaVuSans.ttf');
$text->setFontSize(10);
$text->setFillColor('#ffff');
$text->setTextAntialias(true);
$text->setStrokeWidth(0);
$imagickImage->annotateImage($text, $x, $y + $count * 12, 0, $value);
$count++;
}
// Cleanup
$text->destroy();
}
}
if (isset($marker)) {
$marker->destroy();
}
}
/**
* Import Features/Events from HEK database to the helioviewer for the requested time range
*
* @return void
*/
public function importEvents()
{
include_once HV_ROOT_DIR . '/../src/Event/HEKAdapter.php';
$hek = new Event_HEKAdapter();
if (array_key_exists('period', $this->_options)) {
$period = $this->_options['period'];
} else {
$period = null;
}
// Query the HEK
$events = $hek->importEvents($period);
header('Content-Type: application/json');
echo json_encode('{"status":"success"}');
}
