public function generate()
{
$width = $this->_owner->imagesx();
$height = $this->_owner->imagesy();
$distance = $this->distance;
$matrix = $this->matrix;
$matrix_width = count($matrix);
$matrix_sum = array_sum($matrix);
$c = 0;
$m_offset = floor($matrix_width / 2);
$temp = new Image_Image();
$temp->createImageTrueColorTransparent($width + $matrix_width * 2, $height + $matrix_width * 2);
imagecopy($temp->image, $this->_owner->image, $matrix_width, $matrix_width, 0, 0, $width, $height);
$w = $temp->imagesx();
$h = $temp->imagesy();
for ($y = 0; $y < $h; $y++) {
for ($x = 0; $x < $w; $x++) {
$t = $temp->imagecolorat($x, $y);
$t1 = Image_Image::intColorToArrayColor($t);
$p[$x][$y]['r'] = $t1['red'];
$p[$x][$y]['g'] = $t1['green'];
$p[$x][$y]['b'] = $t1['blue'];
$p[$x][$y]['a'] = $t1['alpha'];
$p1[$x][$y]['r'] = 255;
$p1[$x][$y]['g'] = 255;
$p1[$x][$y]['b'] = 255;
$p1[$x][$y]['a'] = 127;
}
}
$w = $this->_owner->imagesx();
$h = $this->_owner->imagesy();
$d_offset = $distance - $matrix_width;
if ($this->color != "image") {
$arrColor = $this->_owner->hexColorToArrayColor($this->color);
}
$temp->createImageTrueColorTransparent($width + $distance + $m_offset, $height + $distance + $m_offset);
imagesavealpha($temp->image, true);
imagealphablending($temp->image, true);
for ($i = $m_offset; $i < $w + $m_offset + $matrix_width; $i++) {
for ($j = $m_offset; $j < $h + $m_offset + $matrix_width; $j++) {
$sumr = 0;
$sumg = 0;
$sumb = 0;
$suma = 0;
for ($k = 0; $k < $matrix_width; $k++) {
$xx = $i - ($matrix_width >> 1) + $k;
$sumr += $p[$xx][$j]['r'] * $matrix[$k];
$sumg += $p[$xx][$j]['g'] * $matrix[$k];
$sumb += $p[$xx][$j]['b'] * $matrix[$k];
$suma += $p[$xx][$j]['a'] * $matrix[$k];
}
$p1[$i][$j]['r'] = $sumr / $matrix_sum;
$p1[$i][$j]['g'] = $sumg / $matrix_sum;
$p1[$i][$j]['b'] = $sumb / $matrix_sum;
$p1[$i][$j]['a'] = $suma / $matrix_sum;
}
}
for ($i = $m_offset; $i < $w + $m_offset + $matrix_width; $i++) {
for ($j = $m_offset; $j < $h + $m_offset + $matrix_width; $j++) {
$sumr = 0;
$sumg = 0;
$sumb = 0;
$suma = 0;
for ($k = 0; $k < $matrix_width; $k++) {
$xy = $j - ($matrix_width >> 1) + $k;
$sumr += $p1[$i][$xy]['r'] * $matrix[$k];
$sumg += $p1[$i][$xy]['g'] * $matrix[$k];
$sumb += $p1[$i][$xy]['b'] * $matrix[$k];
$suma += $p1[$i][$xy]['a'] * $matrix[$k];
}
if ($this->color != "image") {
$col = imagecolorallocatealpha($temp->image, $arrColor['red'], $arrColor['green'], $arrColor['blue'], $suma / $matrix_sum);
} else {
$col = imagecolorallocatealpha($temp->image, $sumr / $matrix_sum, $sumg / $matrix_sum, $sumb / $matrix_sum, $suma / $matrix_sum);
}
imagesetpixel($temp->image, $i + $d_offset, $j + $d_offset, $col);
}
}
imagecopy($temp->image, $this->_owner->image, 0, 0, 0, 0, $width, $height);
$this->_owner->image = $temp->image;
unset($temp);
return true;
}
