Free mini-extension for WooCommerce Composite Products that allows you to create dynamic, multi-layer Composite Product images that respond to option  …

WPClever

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Free mini-extension for <a href="https://woocommerce.com/products/composite-products/" rel="nofollow ugc">WooCommerce Composite Products</a> that allows you to create dynamic, multi-layer Composite Product images that respond to option changes. The mini-extension leverages <a href="https://docs.woocommerce.com/document/composite-products/composite-products-advanced-configuration/" rel="nofollow ugc">Scenarios</a> to conditionally layer additional images over the main Composite Product image.
<h3>Documentation</h3>
The plugin introduces a new “Overlay Image” Scenario Action that lets you:
<ul>
<li>Choose an image from your Media library.</li>
<li>Define conditions for layering this image over the main Composite Product image.</li>
</ul>
This approach makes it possible to utilize either swapping or compositing techniques to conditionally modify the main product image.
For more information and examples, check out the plugin’s repository on <a href="https://github.com/woocommerce/woocommerce-composite-products-conditional-images" rel="nofollow ugc">GitHub</a>.
Important: The code in this plugin is provided “as is”. Support via the WordPress.org forum is provided on a voluntary basis only. If you have an active subscription for WooCommerce Composite Products, please be aware that WooCommerce Support may not be able to assist you with this experimental plugin.
<h4>Image Swapping</h4>
If you have previously worked with Variable Products and Variation Images, chances are you are already familiar with this technique. Here’s the idea behind image swapping:
The main product image is swapped with an image that depicts the chosen options as soon as the configuration of the Composite Product is complete.
Instead of replacing the product images, the same effect can be achieved by covering the main product image with a fully opaque (non-transparent) image.
<h4>Image Compositing</h4>
Compositing is the combination of multiple layers of images into a single image. The final composition creates the illusion that all stacked images are parts of the same scene. For this technique to work, each layered image must include:
<ul>
<li>some transparent areas that allow lower layers of the stack to be seen;</li>
<li>some opaque areas that introduce new elements in the scene by covering the layers below; and</li>
<li>possibly, some semi-trasparent areas that introduce new elements while partially allowing the layers below to be seen.</li>
</ul>
Note: When multiple Overlay Image Scenarios exist, each adds its own image to the main product image stack. The layering order of these conditional images depends on the relative position of their Scenarios: If Scenario A is positioned higher than Scenario B under Product Data > Scenarios, then the image added by Scenario A will appear higher in the stack than the image added by Scenario B.
<h4>Swapping vs Compositing</h4>
The Swapping technique is a viable choice if the number of Component Options is relatively low, as it requires you to capture one picture and create one Scenario for every possible configuration. Its main advantage over the Compositing technique is that it allows you to obtain a natural-looking result, even if you don’t have advanced image processing skills.
The Compositing technique is often a better choice if the number of possible configurations is high, as it requires you to create one “compositable” image for each Component Option. However, specialized knowledge and tools are required to produce a natural-looking result. For this reason, the Compositing technique is often preferred when 3D product models are available, as 3D modelling software can speed up the production of “compositable” images.
<h4>Limitations</h4>
<ol>
<li>The product image cannot be opened in a lightbox once the mini-extension has stacked additional images over it.</li>
<li>The image zooming feature included with WooCommerce is not compatible with the swapping/compositing techniques introduced by the mini-extension. When a Composite Product includes Scenarios with the Overlay Image Scenario Action, the image zooming feature of the Composite Product is disabled.</li>
<li>The plugin works with themes that declare support for the <code>wc-product-gallery-slider</code> feature.</li>
</ol>

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