libvips / libvips/php-vips

Trying to do in PHP what I've done in nip2

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Dominant language
PHP
Stars
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Forks
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PR merge metrics
No merged PRs in 30d

Description

I'm finding the learning curve to the methods in php steep and since I'm on a deadline though maybe I would ask for a bit of help. In nip2 there is Toolkit -> Filter -> Blend -> Blend Alpha, which works well for my purpose as it allows overlay mode, opacity, and offset. But I can't seem to replicate this in PHP.

image

Also, I know it's probably super straightforward but I also can't seem to do a photographic negative filter in PHP, I thought maybe maplut() could do it?

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Research direction

No source file, test, or PHP entry point is mentioned. Start by comparing nip2's Filter → Blend → Blend Alpha behavior with the php-vips API and checking whether maplut() supports the negative effect. Done would require documented PHP-vips guidance for the blend settings and photographic negative workflow.

Written by the indexing model from the issue text.

Assessment

Tech stack
php
Domain
computer-graphics
Issue type
Documentation
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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