(PECL haru >= 0.0.1)
HaruImage::setMaskImage — Set the image mask
$mask_image
Sets the image used as image-mask. It must be 1bit gray-scale color image.
mask_image
A valid HaruImage instance.
Returns TRUE on success.
TRUE
Zgłasza wyjątek HaruException gdy wystąpi błąd.