/**
* Create CAPTCHA image
*
* @return Captcha
*/
public function createImage()
{
$image = new Gd('captcha.gif', $this->width, $this->height);
$image->setBackgroundColor(255, 255, 255);
$image->draw()->setStrokeColor($this->lineColor[0], $this->lineColor[1], $this->lineColor[2]);
// Draw background grid
for ($y = $this->lineSpacing; $y <= $this->height; $y += $this->lineSpacing) {
$image->draw()->line(0, $y, $this->width, $y);
}
for ($x = $this->lineSpacing; $x <= $this->width; $x += $this->lineSpacing) {
$image->draw()->line($x, 0, $x, $this->height);
}
$image->effect()->border($this->textColor, 0.5);
$image->type()->setFillColor($this->textColor[0], $this->textColor[1], $this->textColor[2]);
if (null === $this->font) {
$image->type()->size(5);
$textX = round(($this->width - $this->length * 10) / 2);
$textY = round(($this->height - 16) / 2);
} else {
$image->type()->font($this->font)->size($this->size);
$textX = round(($this->width - $this->length * ($this->size / 1.5)) / 2);
$textY = round($this->height - ($this->height - $this->size) / 2 + (int) $this->rotate / 2);
}
$image->type()->xy($textX, $textY)->text($this->token['value']);
$this->image = $image;
return $this;
}
