The Tear operator splits the mesh in a manner similar to how a scalpel would work in the real world.

Set up

In the deformable mesh’s blueprint, add the Mages Tear component under the deformation component to enable tearing on the mesh:


The “Alpha” property designates by how much the section will “open up”

Performing Tear

The Mages Tear component exposes a single method to blueprints, named “Tear”. This takes in four location parameters, which specify a plane (the Tear plane), which is used to apply the tear operation. Inside the BP_CTDScalpel tool, we use four scene components to determine the tear plane:


And this is how they look inside the tool’s viewport: