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Rewrite mosaic algorithm using declarative paradigm #42

Merged
Roflin merged 8 commits from new-mosaic into master 2023-12-03 12:37:41 +01:00
Conversation 0 Commits 8 Files Changed 6 +152 -169
6 changed files with 152 additions and 169 deletions
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2
controllers/ViewPeople.php
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@ -52,7 +52,7 @@ class ViewPeople extends HTMLController
'start' => $start,
'base_url' => BASEURL . '/people/',
'page_slug' => 'page/%PAGE%/',
'index_class' => 'pagination-lg mt-5 justify-content-center',
'index_class' => 'pagination-lg mt-5 justify-content-around justify-content-lg-center',
]);
$this->page->adopt(new PageIndexWidget($pagination));

2
controllers/ViewPhotoAlbum.php
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@ -91,7 +91,7 @@ class ViewPhotoAlbum extends HTMLController
'start' => (isset($_GET['page']) ? $_GET['page'] - 1 : 0) * self::PER_PAGE,
'base_url' => BASEURL . '/' . (isset($_GET['tag']) ? $_GET['tag'] . '/' : ''),
'page_slug' => 'page/%PAGE%/',
'index_class' => 'pagination-lg justify-content-center',
'index_class' => 'pagination-lg justify-content-around justify-content-lg-center',
]);
$this->page->adopt(new PageIndexWidget($index));
}

2
controllers/ViewTimeline.php
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@ -46,7 +46,7 @@ class ViewTimeline extends HTMLController
'start' => (isset($_GET['page']) ? $_GET['page'] - 1 : 0) * self::PER_PAGE,
'base_url' => BASEURL . '/timeline/',
'page_slug' => 'page/%PAGE%/',
'index_class' => 'pagination-lg justify-content-center',
'index_class' => 'pagination-lg justify-content-around justify-content-lg-center',
]);
$this->page->adopt(new PageIndexWidget($index));
}

188
models/PhotoMosaic.php
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@ -8,14 +8,17 @@
class PhotoMosaic
{
private AssetIterator $iterator;
private $layouts;
private $processedImages = 0;
private $queue = [];
const NUM_DAYS_CUTOFF = 7;
private AssetIterator $iterator;
public function __construct(AssetIterator $iterator)
{
$this->iterator = $iterator;
$this->layouts = $this->availableLayouts();
}
public function __destruct()
@ -23,21 +26,40 @@ class PhotoMosaic
$this->iterator->clean();
}
public static function getRecentPhotos()
private function availableLayouts()
{
return new self(AssetIterator::getByOptions([
'tag' => 'photo',
'order' => 'date_captured',
'direction' => 'desc',
'limit' => 15, // worst case: 3 rows * (portrait + 4 thumbs)
]));
static $layouts = [
// Single panorama
'panorama' => [Image::TYPE_PANORAMA],
// A whopping six landscapes?
'sixLandscapes' => [Image::TYPE_LANDSCAPE, Image::TYPE_LANDSCAPE, Image::TYPE_LANDSCAPE,
Image::TYPE_LANDSCAPE, Image::TYPE_LANDSCAPE, Image::TYPE_LANDSCAPE],
// Big-small juxtapositions
'sidePortrait' => [Image::TYPE_PORTRAIT, Image::TYPE_LANDSCAPE, Image::TYPE_LANDSCAPE,
Image::TYPE_LANDSCAPE, Image::TYPE_LANDSCAPE],
'sideLandscape' => [Image::TYPE_LANDSCAPE, Image::TYPE_LANDSCAPE, Image::TYPE_LANDSCAPE],
// Single row of three
'threeLandscapes' => [Image::TYPE_LANDSCAPE, Image::TYPE_LANDSCAPE, Image::TYPE_LANDSCAPE],
'threePortraits' => [Image::TYPE_PORTRAIT, Image::TYPE_PORTRAIT, Image::TYPE_PORTRAIT],
// Dual layouts
'dualLandscapes' => [Image::TYPE_LANDSCAPE, Image::TYPE_LANDSCAPE],
'dualPortraits' => [Image::TYPE_PORTRAIT, Image::TYPE_PORTRAIT],
// Fallback layouts
'singleLandscape' => [Image::TYPE_LANDSCAPE],
'singlePortrait' => [Image::TYPE_PORTRAIT],
];
return $layouts;
}
private static function matchTypeMask(Image $image, $type_mask)
private static function daysApart(Image $a, Image $b)
{
return ($type_mask & Image::TYPE_PANORAMA) && $image->isPanorama() ||
($type_mask & Image::TYPE_LANDSCAPE) && $image->isLandscape() ||
($type_mask & Image::TYPE_PORTRAIT) && $image->isPortrait();
return $a->getDateCaptured()->diff($b->getDateCaptured())->days;
}
private function fetchImage($desired_type = Image::TYPE_PORTRAIT | Image::TYPE_LANDSCAPE | Image::TYPE_PANORAMA, Image $refDateImage = null)
@ -66,109 +88,63 @@ class PhotoMosaic
return false;
}
private function pushToQueue(Image $image)
public function getRow()
{
$this->queue[] = $image;
$currentImages = [];
$selectedLayout = null;
foreach ($this->layouts as $layout => $requiredImageTypes)
{
// Fetch images per the layout requirements
// TODO: pass last image back into fetchImage for date cutoff purposes
$currentImages = array_filter(array_map([$this, 'fetchImage'], $requiredImageTypes));
// Matching requirements?
if (count($currentImages) === count($requiredImageTypes))
{
$selectedLayout = $layout;
break;
}
// Push mismatches back into the queue
array_map([$this, 'pushToQueue'], $currentImages);
$currentImages = [];
}
if ($selectedLayout)
{
// Hurray, we've got something that works
usort($currentImages, [$this, 'orderPhotos']);
$this->processedImages += count($currentImages);
return [$currentImages, $selectedLayout];
}
else
{
// Ensure we have no images left in the iterator before giving up
assert($this->processedImages === $this->iterator->num());
return false;
}
}
private static function matchTypeMask(Image $image, $type_mask)
{
return ($type_mask & Image::TYPE_PANORAMA) && $image->isPanorama() ||
($type_mask & Image::TYPE_LANDSCAPE) && $image->isLandscape() ||
($type_mask & Image::TYPE_PORTRAIT) && $image->isPortrait();
}
private static function orderPhotos(Image $a, Image $b)
{
// Show images of highest priority first.
// Leave images of different types as-is
if ($a->isLandscape() !== $b->isLandscape())
return 0;
// Otherwise, show images of highest priority first
$priority_diff = $a->getPriority() - $b->getPriority();
if ($priority_diff !== 0)
return -$priority_diff;
// In other cases, we'll just show the newest first.
return $a->getDateCaptured() <=> $b->getDateCaptured();
}
private static function daysApart(Image $a, Image $b)
private function pushToQueue(Image $image)
{
return $a->getDateCaptured()->diff($b->getDateCaptured())->days;
}
public function getRow()
{
// Fetch the first image...
$image = $this->fetchImage();
// No image at all?
if (!$image)
return false;
// Is it a panorama? Then we've got our row!
elseif ($image->isPanorama())
return [[$image], 'panorama'];
// Alright, let's initalise a proper row, then.
$photos = [$image];
$num_portrait = $image->isPortrait() ? 1 : 0;
$num_landscape = $image->isLandscape() ? 1 : 0;
// Get an initial batch of non-panorama images to work with.
for ($i = 1; $i < 3 && ($image = $this->fetchImage(Image::TYPE_LANDSCAPE | Image::TYPE_PORTRAIT, $image)); $i++)
{
$num_portrait += $image->isPortrait() ? 1 : 0;
$num_landscape += $image->isLandscape() ? 1 : 0;
$photos[] = $image;
}
// Sort photos by priority and date captured.
usort($photos, self::orderPhotos(...));
// Three portraits?
if ($num_portrait === 3)
return [$photos, 'portraits'];
// At least one portrait?
if ($num_portrait >= 1)
{
// Grab two more landscapes, so we can put a total of four tiles on the side.
for ($i = 0; $image && $i < 2 && ($image = $this->fetchImage(Image::TYPE_LANDSCAPE | Image::TYPE_PORTRAIT, $image)); $i++)
$photos[] = $image;
// We prefer to have the portrait on the side, so prepare to process that first.
usort($photos, function($a, $b) {
if ($a->isPortrait() && !$b->isPortrait())
return -1;
elseif ($b->isPortrait() && !$a->isPortrait())
return 1;
else
return self::orderPhotos($a, $b);
});
// We might not have a full set of photos, but only bother if we have at least three.
if (count($photos) > 3)
return [$photos, 'portrait'];
}
// One landscape at least, hopefully?
if ($num_landscape >= 1)
{
if (count($photos) === 3)
{
// We prefer to have the landscape on the side, so prepare to process that first.
usort($photos, function($a, $b) {
if ($a->isLandscape() && !$b->isLandscape())
return -1;
elseif ($b->isLandscape() && !$a->isLandscape())
return 1;
else
return self::orderPhotos($a, $b);
});
return [$photos, 'landscape'];
}
elseif (count($photos) === 2)
return [$photos, 'duo'];
else
return [$photos, 'single'];
}
// Last resort: majority vote
if ($num_portrait > $num_landscape)
return [$photos, 'portraits'];
else
return [$photos, 'landscapes'];
$this->queue[] = $image;
}
}

22
public/css/default.css
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@ -81,29 +81,17 @@ a:hover {
}
@media (max-width: 767px) {
.pagination {
height: 52px;
display: block;
position: relative;
}
.pagination .page-number, .pagination .page-padding {
display: none;
}
.pagination .page-link {
border-radius: var(--bs-pagination-border-radius) !important;
}
.pagination > :first-child, .pagination > :last-child, .pagination .first-wildcard {
display: inline-block;
position: absolute;
}
.pagination > :first-child {
left: 0;
}
.pagination > .first-wildcard {
left: 48%;
}
.pagination > :last-child {
right: 0;
.pagination > :first-child,
.pagination > :last-child,
.pagination .first-wildcard,
.pagination .page-number.active {
display: inline-flex;
}
}

103
templates/PhotosIndex.php
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@ -12,7 +12,6 @@ class PhotosIndex extends Template
protected $show_edit_buttons;
protected $show_headers;
protected $show_labels;
protected $row_limit = 1000;
protected $previous_header = '';
protected $url_suffix;
@ -47,11 +46,12 @@ class PhotosIndex extends Template
echo '
<div class="container photo-index">';
for ($i = $this->row_limit; $i > 0 && $row = $this->mosaic->getRow(); $i--)
$i = 0;
while ($row = $this->mosaic->getRow())
{
list($photos, $what) = $row;
[$photos, $what] = $row;
$this->header($photos);
$this->$what($photos, $i % 2);
$this->$what($photos, ($i++) % 2);
}
echo '
@ -137,7 +137,14 @@ class PhotosIndex extends Template
}
}
protected function portrait(array $photos, $altLayout)
protected function sixLandscapes(array $photos, $altLayout)
{
$chunks = array_chunk($photos, 3);
$this->sideLandscape($chunks[0], $altLayout);
$this->threeLandscapes($chunks[1], $altLayout);
}
protected function sidePortrait(array $photos, $altLayout)
{
$image = array_shift($photos);
@ -170,7 +177,7 @@ class PhotosIndex extends Template
</div>';
}
protected function landscape(array $photos, $altLayout)
protected function sideLandscape(array $photos, $altLayout)
{
$image = array_shift($photos);
@ -203,41 +210,7 @@ class PhotosIndex extends Template
</div>';
}
protected function duo(array $photos, $altLayout)
{
echo '
<div class="row g-5 mb-5 tile-duo">';
foreach ($photos as $image)
{
echo '
<div class="col-md-6">';
$this->photo($image, 'duo', static::DUO_WIDTH, static::DUO_HEIGHT, true);
echo '
</div>';
}
echo '
</div>';
}
protected function single(array $photos, $altLayout)
{
echo '
<div class="row g-5 mb-5 tile-single">
<div class="col-md-6">';
$image = array_shift($photos);
$this->photo($image, 'single', static::SINGLE_WIDTH, static::SINGLE_HEIGHT, 'top');
echo '
</div>
</div>';
}
protected function landscapes(array $photos, $altLayout)
protected function threeLandscapes(array $photos, $altLayout)
{
echo '
<div class="row g-5 mb-5 tile-row-landscapes">';
@ -257,7 +230,7 @@ class PhotosIndex extends Template
</div>';
}
protected function portraits(array $photos, $altLayout)
protected function threePortraits(array $photos, $altLayout)
{
echo '
<div class="row g-5 mb-5 tile-row-portraits">';
@ -277,6 +250,52 @@ class PhotosIndex extends Template
</div>';
}
protected function dualLandscapes(array $photos, $altLayout)
{
echo '
<div class="row g-5 mb-5 tile-duo">';
foreach ($photos as $image)
{
echo '
<div class="col-md-6">';
$this->photo($image, 'duo', static::DUO_WIDTH, static::DUO_HEIGHT, true);
echo '
</div>';
}
echo '
</div>';
}
protected function dualPortraits(array $photos, $altLayout)
{
// Recycle the row layout so portraits don't appear too large
$this->threePortraits($photos, $altLayout);
}
protected function singleLandscape(array $photos, $altLayout)
{
echo '
<div class="row g-5 mb-5 tile-single">
<div class="col-md-6">';
$image = array_shift($photos);
$this->photo($image, 'single', static::SINGLE_WIDTH, static::SINGLE_HEIGHT, 'top');
echo '
</div>
</div>';
}
protected function singlePortrait(array $photos, $altLayout)
{
// Recycle the row layout so portraits don't appear too large
$this->threePortraits($photos, $altLayout);
}
public function setUrlSuffix($suffix)
{
$this->url_suffix = $suffix;