ImageMagic does this just brilliantly. I've done it on a fairly large scale.
I'm curious Rick, why would it not "scale" well?
Greg
On 12/5/06, Rick Root <[EMAIL PROTECTED]> wrote:
>
> On Tuesday 05 December 2006 10:42, Coldfusion wrote:
> > I am curious as how you can add a watermark to an image without
> > having to create a new image.
>
> I'm sure you could, but why would you want to? Watermarking an image
> with every request would not scale very well.
>
> You could "cache" watermark images... ie..
>
> ---- watermark.cfm ---
> <cfparam name="img" type="string">
> <cfset wm_img = "wm_#img#">
> <cfif fileExists("#getTempDirectory()#/#wm_img#")>
> <!--- create watermarked image using image.cfc --->
> <!--- or alagad or whatever --->
> </cfif>
> <cfcontent file="#getTempDirectory()#/#wm_img#"
> type="image/jpeg" reset="yes"
> deletefile="no">
> ---- end watermark.cfm ---
>
> You'd just have to be careful about making sure you delete the old
> watermark when you update the original image.
>
> but I'm not sure why you wouldn't just create a separate watermark image
> up front.
>
> Rick
>
>
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