<p dir="auto">Creating a model in Three.js/editor and exporting with roughness or metal maps to GLB or GLTF will not export the rough/metal maps whether they are combined as a single file AO/Rough/Metal RGB or as individual images.</p>
<p dir="auto">I'm trying to apply these images in the Editor and export them as a gltf file.  However when the exporter ignores them because it says they are not the same image (even though they are in the case of a hand merged file.</p>
<p dir="auto">When I reimport the glb in the editor the images are not their, but if I exported the AO map (same image) it is exported.</p>
<p dir="auto">Is there a way to check that the user is trying to apply a merged image or the same image and go ahead and export the metal roughness maps?</p>
<p dir="auto">here is a shot of the editor before export...</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/7503097/45763708-10572000-bbff-11e8-8bbc-7c37897b053d.JPG"><img src="https://user-images.githubusercontent.com/7503097/45763708-10572000-bbff-11e8-8bbc-7c37897b053d.JPG" alt="beforeexport" style="max-width: 100%;"></a></p>
<p dir="auto">And here is a shot after import with a console log showing the export problem.</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/7503097/45763780-37155680-bbff-11e8-956e-b0facd07db61.JPG"><img src="https://user-images.githubusercontent.com/7503097/45763780-37155680-bbff-11e8-956e-b0facd07db61.JPG" alt="importglb" style="max-width: 100%;"></a></p>
<h5 dir="auto">Three.js version</h5>
<p dir="auto">version r.96</p>
<h5 dir="auto">Browser</h5>
<p dir="auto">Chrome</p>
<h5 dir="auto">OS</h5>
<p dir="auto">Windows 10</p>
<p dir="auto">It would be nice if the TransformControls had optional constraints (minimum, maximum) for each axis. It would be also nice if some gizmo definitions/helpers could be enabled/disabled.</p>
<p dir="auto">The example below shows a max scale constraint for all axes and most of the gizmo definitions/helpers disabled.<br>
<a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/18190064/129895469-da5e146a-2e0b-4882-818d-c10f77d97ac3.gif"><img src="https://user-images.githubusercontent.com/18190064/129895469-da5e146a-2e0b-4882-818d-c10f77d97ac3.gif" alt="gizmo" data-animated-image="" style="max-width: 100%;"></a></p>