Cfimage and crop with direct links

Question

Hello,
I need some advice..
I want to have users reference images from my site but only certain sections (IE: http://somedomain.com/getimg.cfm?ID=123&section=1).  Below is the code I have but it only outputs a variable like coldfusion.image.Image@174e3a9 rather than the actual image.  I understand cfimage has a writeToBrowser action but that outputs html source which wont allow my users to have a direct link.
<cfprocessingdirective suppresswhitespace="yes">
<cfimage source="d:\test.jpg" name="myImage">
<cfset ImageCrop(myImage,0,0,534,474)>
<cfcontent type="image/jpeg" >
<cfoutput>#myImage#</cfoutput><!--- does not output actual image --->
</cfprocessingdirective>

Answer 1

You can also prevent direct links (although not fool-proof) by checking the HTTP_REFERER at http server level, using mod_write or isapi_rewrite (or similar). You can easily find examples for this by searching the internet.
About cfcontent then... the correct usage would be <cfcontent variable="#myImage#" type="image/jpeg"> , but since cfcontent does not support a ColdFusion image object, but rather variables or binary objects read by cffile, save the cropped image to a disk with the cfimage tag, then read it using cffile.
Better yet, if you are using ColdFusion 9, use the ram://-drive instead of physical disk for less I/O load.
- Fernis - fernis.net - ColdFusion Developer For Hire