# ImplicitPlaneWidget dims the volume (gray overlay) — how to make it fully see-through like ImageCroppingWidget?

**URL:** <https://discourse.vtk.org/t/implicitplanewidget-dims-the-volume-gray-overlay-how-to-make-it-fully-see-through-like-imagecroppingwidget/16003>\
**Category:** Development\
**Created:** [August 29, 2025, 3:21pm UTC](https://discourse.vtk.org/t/implicitplanewidget-dims-the-volume-gray-overlay-how-to-make-it-fully-see-through-like-imagecroppingwidget/16003 "2025-08-29T15:21:22Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Pranathi\_Induri](https://discourse.vtk.org/user_avatar/discourse.vtk.org/pranathi_induri/32/10177_2.png) [@Pranathi\_Induri](https://discourse.vtk.org/u/Pranathi_Induri)\
**Post date:** [August 29, 2025, 3:21pm UTC](https://discourse.vtk.org/t/implicitplanewidget-dims-the-volume-gray-overlay-how-to-make-it-fully-see-through-like-imagecroppingwidget/16003/1 "2025-08-29T15:21:22Z")

</div>

VTK.js . I render a volume with `vtkImageCroppingWidget` (nice clear box). When I add a `vtkImplicitPlaneWidget` to show a cutting plane, the plane’s face visibly darkens the volume (gray pixels) instead of being fully see-through. I only want the outline/handles, with no filled face and no depth/write that occludes the volume.

What’s the correct way to configure the ImplicitPlaneWidget (or its representations) so it renders like the cropping widget (clear, non-occluding)?