PHP - Mask polygon over image
Hi Everyone (this is my first post),

I am trying to figure a way of cropping a polygon out of an image. I have been reading other similar code. It seems that most code is based around the following process:

-Resize the image to fit the width and height of the polygon shape,

-Create a blank image of an unusual colour the same size,

-Overlay transparent pixels in the shape of the polygon,

-Overlay that on to the resized image

-set the unusual colour to be transparent...


My problem is I do not want the code to be reliant on the unusual colour not being in the original image. Does anyone have a better method or some code which I can use to check if the unusual colour is in the image.

On a side note once I have cropped them I am looking to add a border only around the top and the left sides of the shape and three pixels in the corners to achieve a rounded corner effect... if anyone has any ideas about that then please also post.

Thanks in Advance.
PHP - Mask polygon over image
===

Hi Everyone (this is my first post),

I am trying to figure a way of cropping a polygon out of an image. I have been reading other similar code. It seems that most code is based around the following process:

-Resize the image to fit the width and height of the polygon shape,

-Create a blank image of an unusual colour the same size,

-Overlay transparent pixels in the shape of the polygon,

-Overlay that on to the resized image

-set the unusual colour to be transparent...


My problem is I do not want the code to be reliant on the unusual colour not being in the original image. Does anyone have a better method or some code which I can use to check if the unusual colour is in the image.

On a side note once I have cropped them I am looking to add a border only around the top and the left sides of the shape and three pixels in the corners to achieve a rounded corner effect... if anyone has any ideas about that then please also post.

Thanks in Advance.