Free Form Deformation Example

Example of using Free Form deformation of the mesh

• Python

  Note

  Python API version 3 and later

  from meshlib import mrmeshpy as mm
   
  # Load mesh
  mesh = mm.loadMesh("mesh.stl")
   
  # Compute mesh bounding box
  box = mesh.computeBoundingBox()
   
  # Construct deformer on mesh vertices
  ffDeformer = mm.FreeFormDeformer(mesh.points,mesh.topology.getValidVerts())
   
  # Init deformer with 3x3 grid on mesh box
  ffDeformer.init(mm.Vector3i.diagonal(3),box)
   
  # Move some control points of grid to the center
  ffDeformer.setRefGridPointPosition(mm.Vector3i(1,1,0),box.center())
  ffDeformer.setRefGridPointPosition(mm.Vector3i(1,1,2),box.center())
  ffDeformer.setRefGridPointPosition(mm.Vector3i(0,1,1),box.center())
  ffDeformer.setRefGridPointPosition(mm.Vector3i(2,1,1),box.center())
  ffDeformer.setRefGridPointPosition(mm.Vector3i(1,0,1),box.center())
  ffDeformer.setRefGridPointPosition(mm.Vector3i(1,2,1),box.center())
   
  # Apply deformation to mesh vertices
  ffDeformer.apply()
   
  # Invalidate mesh because of external vertices changes
  mesh.invalidateCaches()
   
  # Save deformed mesh
  mm.saveMesh(mesh,"deformed_mesh.stl")