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<?php |
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namespace Smindel\GIS\Service; |
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use SilverStripe\Core\Injector\Injectable; |
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use SilverStripe\Core\Config\Configurable; |
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class GDRenderer |
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{ |
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use Injectable; |
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use Configurable; |
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const LIB_NAME = 'GD'; |
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protected $width; |
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protected $height; |
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protected $list; |
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protected $image; |
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protected $defaultStyle; |
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public $backgroundcolor; |
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public $strokecolor; |
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public $fillcolor; |
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public function __construct($width, $height, $defaultStyle = []) |
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{ |
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$this->width = $width; |
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$this->height = $height; |
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$this->defaultStyle = $defaultStyle; |
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$this->image = imagecreate($this->width, $this->height); |
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foreach ($defaultStyle['gd'] as $key => $val) { |
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if ($key == 'pointradius') { |
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continue; |
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} |
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switch ($key) { |
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case 'pointradius': |
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continue; |
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case 'backgroundcolor': |
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case 'strokecolor': |
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case 'fillcolor': |
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$method = count($val) == 4 ? 'imagecolorallocatealpha' : 'imagecolorallocate'; |
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$this->$key = $method($this->image, ...$val); |
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break; |
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default: |
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$method = 'image' . $key; |
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array_unshift($val, $this->image); |
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$method(...$val); |
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} |
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} |
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} |
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public function debug($text) |
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{ |
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$color = imagecolorallocate($this->image, 255, 0, 0); |
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imagedashedline($this->image, 0, 0, $this->width, 0, $color); |
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imagedashedline($this->image, 0, 0, 0, $this->height, $color); |
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imagestring($this->image, 5, 5, 5, $text, $color); |
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} |
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public function getImage() |
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{ |
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return $this->image; |
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} |
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public function getContentType() |
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{ |
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return 'image/png'; |
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} |
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public function drawPoint($coordinates) |
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{ |
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list($x, $y) = $coordinates; |
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imagefilledarc($this->image, $x, $y, 2 * $this->defaultStyle['gd']['pointradius'], 2 * $this->defaultStyle['gd']['pointradius'], 0, 360, $this->fillcolor, IMG_ARC_PIE); |
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imagearc($this->image, $x, $y, 2 * $this->defaultStyle['gd']['pointradius'], 2 * $this->defaultStyle['gd']['pointradius'], 0, 360, $this->strokecolor); |
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} |
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public function drawLineString($coordinates) |
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{ |
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foreach ($coordinates as $coord) { |
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if (isset($prev)) { |
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imageline($this->image, $prev[0], $prev[1], $coord[0], $coord[1], $this->strokecolor); |
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} |
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$prev = $coord; |
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} |
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} |
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public function drawPolygon($coordinates) |
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{ |
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foreach ($coordinates as $coords) { |
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$xy = []; |
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foreach ($coords as $coord) { |
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$xy[] = $coord[0]; |
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$xy[] = $coord[1]; |
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} |
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imagefilledpolygon($this->image, $xy, count($xy) / 2, $this->fillcolor); |
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imagepolygon($this->image, $xy, count($xy) / 2, $this->strokecolor); |
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} |
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} |
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public function drawMultipoint($multicoordinates) |
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{ |
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foreach ($multicoordinates as $coordinates) { |
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$this->drawPoint($coordinates); |
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} |
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} |
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public function drawMultilinestring($multicoordinates) |
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{ |
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foreach ($multicoordinates as $coordinates) { |
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$this->drawLinestring($coordinates); |
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} |
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} |
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public function drawMultipolygon($multicoordinates) |
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{ |
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foreach ($multicoordinates as $coordinates) { |
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$this->drawPolygon($coordinates); |
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} |
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} |
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public function getImageBlob() |
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{ |
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ob_start(); |
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imagepng($this->image); |
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$blob = ob_get_clean(); |
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return $blob; |
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} |
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} |
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smindel /
silverstripe-gis
