public function __construct(Rectangle $bounds, $level = 0)
{
$this->level = $level;
$this->objects = [];
$this->bounds = $bounds->normalized();
$this->nodes = [];
}
public function testInflated()
{
$rect = new Rectangle(1, 1, 3, 3);
$rectInflated = $rect->inflated(1, 2);
$this->assertIdentical(new Rectangle(0, -1, 4, 5), $rectInflated);
$this->assertNotSame($rectInflated, $rect);
}
public function makeCloud($width, $height, $outputPath, array $sortedWords, $debug = false)
{
$tmpDirectoryPath = dirname(dirname(__DIR__)) . '/tmp/';
if (!is_dir($tmpDirectoryPath)) {
mkdir($tmpDirectoryPath);
}
$fontUrl = $this->env['STATIC_HOSTING_URL'] . 'fonts/' . $this->env['FONT_FILE'];
$fontfile = $tmpDirectoryPath . uniqid();
file_put_contents($fontfile, fopen($fontUrl, 'r'));
// Calculate bounding boxes for words and sum up area
$rectangles = [];
$area = 0;
foreach ($sortedWords as $word => $count) {
$bbox = imagettfbbox($this->fontSizeForCount($count), 0, $fontfile, $word);
if ($bbox === false) {
throw new \Exception("Error getting bounding box for string `{$word}` with fontfile `{$fontfile}`.");
}
$bboxRect = new Rectangle($bbox[0], $bbox[1], $bbox[4], $bbox[5]);
$rectangles[$word] = new Rectangle($bboxRect->x1, $bboxRect->y1, $bboxRect->x1 + $bboxRect->width(), $bboxRect->y1 + $bboxRect->height());
$area += $rectangles[$word]->area();
}
$fudgedArea = $area * 1.5;
// Calculate playing field
$pfAspect = $width / $height;
$pfWidth = sqrt($fudgedArea * $pfAspect);
$pfHeight = $fudgedArea / $pfWidth;
$playingField = new Rectangle(0, 0, $pfWidth, $pfHeight);
// Place rectangles into the cloud
$quad = new Quadtree($playingField);
$placedRectangles = [];
foreach ($rectangles as $word => $rectangle) {
$posX = $this->randFloatMinMax(0, $playingField->width() - $rectangle->width()) - $rectangle->x1;
$posY = $this->randFloatMinMax(0, $playingField->height() - $rectangle->height()) - $rectangle->y1;
// $placed = $rectangle->translated($posX, $posY);
$placed = $rectangle->translated($pfWidth / 2, $pfHeight / 2);
$originalPlaced = clone $placed;
$loopCount = 0;
while ($this->rectIntersects($placed, $quad->retrieve($placed))) {
do {
$t = $loopCount / self::SPIRAL_STEPS;
list($spiralX, $spiralY) = $this->spiralOffset($t, 20, 20 * $this->fontSizeForCount($sortedWords[$word]));
$placed = $originalPlaced->translated($spiralX, $spiralY);
$loopCount++;
} while ($loopCount < self::SPIRAL_STEPS && !$playingField->contains($placed));
}
$placedRectangles[$word] = $placed;
$quad->insert($placed);
}
// Find the min and max coordinates of placed rectangles
$minX = current($placedRectangles)->x1;
$minY = current($placedRectangles)->y1;
$maxX = current($placedRectangles)->x2;
$maxY = current($placedRectangles)->y2;
foreach ($placedRectangles as $placedRectangle) {
if ($placedRectangle->x1 < $minX) {
$minX = $placedRectangle->x1;
}
if ($placedRectangle->y1 < $minY) {
$minY = $placedRectangle->y1;
}
if ($placedRectangle->x2 > $maxX) {
$maxX = $placedRectangle->x2;
}
if ($placedRectangle->y2 > $maxY) {
$maxY = $placedRectangle->y2;
}
}
// Get zoom factor to fit all text into playing field
$widthZoomFactor = $playingField->width() / ($maxX - $minX);
$heightZoomFactor = $playingField->height() / ($maxY - $minY);
$textZoomFactor = min($widthZoomFactor, $heightZoomFactor);
// Make the image!
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$gray = imagecolorallocate($image, 128, 128, 128);
$black = imagecolorallocate($image, 0, 0, 0);
imagefilledrectangle($image, 0, 0, $width - 1, $height - 1, $white);
$scaleFactor = $textZoomFactor * ($width / $pfWidth);
foreach ($placedRectangles as $word => $placed) {
imagettftext($image, $this->fontSizeForCount($sortedWords[$word]) * $scaleFactor, 0, ($placed->x1 - $minX) * $scaleFactor, ($placed->y2 - $rectangles[$word]->y1 - $minY) * $scaleFactor, $black, $fontfile, $word);
if ($debug) {
imagerectangle($image, ($placed->x1 - $minX) * $scaleFactor, ($placed->y1 - $minY) * $scaleFactor, ($placed->x2 - $minX) * $scaleFactor, ($placed->y2 - $minY) * $scaleFactor, $gray);
}
}
if ($debug) {
imagerectangle($image, ($playingField->x1 - $minX) * $scaleFactor, ($playingField->y1 - $minY) * $scaleFactor, ($playingField->x2 - $minX) * $scaleFactor, ($playingField->y2 - $minY) * $scaleFactor, $black);
}
// Output the image
if (!is_dir($outputPath)) {
mkdir($outputPath);
}
$imageId = uniqid();
$imageUrl = "{$outputPath}/{$imageId}.png";
imagepng($image, $imageUrl);
imagedestroy($image);
// Delete the font
unlink($fontfile);
return $imageUrl;
}
