Cage Deformer

Enables Cage deformer for input mesh. Input Cage is optional

/**
 * Node that deforms a mesh using a control cage.
 * 
 * Opens a viewport for editing the cage mesh, with the
 * high-resolution mesh following the cage deformation.
 * 
 * Usage:
 * 1. Connect mesh and cage inputs
 * 2. Use viewport to deform cage
 * 3. Output is the deformed mesh
 */