I would make an automation plug-in and a filter plug-in.<br /><br />1) Run the automation which runs your filter to gather current image <br />information<br />2) Create a temp file of the new document<br />3) Make a new document<br />4) Call the filter again to reload the temp data on disk<br /><br /><Matthew_Hollingworth@adobeforums.com> wrote in message <br />news:3bc3ff50.-1@webcrossing.la2eafNXanI...<br />> Hi Photoshop developers,<br />><br />> I'm a developer with a few Photoshop filter and selection plug-ins under <br />> my belt, and I have a good understanding of the SDK and tools and suites <br />> it provides. My next project is an algorithm for enlarging/resampling <br />> images to different pixel dimensions. I'm wondering if anyone has any <br />> suggestions for or experience with the best combination of plug-in types <br />> to implement this.<br />><br />> Clearly, I can't just write it as a filter plug-in, since there is no way <br />> to change the image dimensions from within a filter.<br />><br />> I'd like the resized image to remain within Photoshop (as a new window or <br />> in the original one), so an export plug-in on its own is not sufficient.<br />><br />> Import plug-ins seem promising, since they allow the creation of a new <br />> document of the required size. However, as best I can tell from the <br />> Photoshop 6.0 SDK documentation, import plug-ins cannot access the image <br />> data from other open documents (or even the clipboard), nor do they <br />> provide any support for channel ports and the Channel Port suite.<br />><br />> My best idea at this stage is to create an export plug-in to provide the <br />> user interface and calculate the resized image, and then an import plug-in <br />> to import the resized image back into a new window. (I'm supposing a <br />> further automation plug-in would then be written to perform this <br />> export/import sequence.) The difficulty I see with this approach is how to <br />> communicate the resized image data between the two plug-ins. Since the <br />> resized image will potentially be very large, the ideal solution would be <br />> to store it in channels managed by the Channel Ports suite. However, I <br />> cannot see how the channel ports created in the export plug-in could be <br />> communicated to and used by an import plug-in. The alternative would be <br />> for the export plug-in to save the resized image to a temporary file on <br />> disk, however this seems unnecessary.<br />><br />> So, my questions, specifically, are:<br />><br />> a) Is it possible to create new channels using the Channel Ports suite <br />> (sPSChannelPorts->New()) in one plug-in, and have those channels persist <br />> to be used in another plug-in?<br />><br />> b) If so, how would the channel ports be communicated between the <br />> plug-ins?<br />><br />> c) Alternately, are there any alternative architectures available for <br />> implementing an image-resizing algorithm using the plug-in types that are <br />> available for Photoshop developers.<br />><br />> Any responses would be greatly appreciated; I know this is a low-traffic <br />> forum...<br />><br />> Thanks,<br />> Matthew.
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