This is a simple Geometry Nodes group that will allow you to deform a model using any other mesh. The deformation consists in a squish-in at the place of contact, and bulge-out at the borders. You need to create a very simple "dummy" for the bulge-out (just scale a little in the vertical axis for most cases).
This .blend includes:
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A rigged model that is deformed
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Two different deformers with their corresponding dummies
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An even more simplified example
In order to import this to any project:
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Drag and drop this .blend into your project
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Append
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NodeTree
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SquishBulge
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Add the Geometry Nodes modifier to your 3D model
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Assign the SquishBulge Node Tree
Usage:
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Add the Geometry Nodes modifier after the Armature modifier if your model is rigged
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You have to add one Geometry Nodes modifiers per deforming mesh
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Fields:
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Deformer: main deforming mesh. This is the one that squishes-in
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DeformerDummy: dummy deformer. It\'s supposed to be bigger and follow the Deformer. Makes this child of the deformer if you need to. This is the one that bulges-out.
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In: the amount to be squished-in
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Out: the amount to be bulged-out
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SubDiv: how many subdivisions should be applied at the end. It\'s recommended to apply subdivisions only at the end, and not before, for best results.
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Disclaimer:
I\'m not able to provide support for this project. Consider it a template or starting point, rather than a complete solution.