基于骨骼线的三维网格编辑

novel and intuitive method for the interactive editing of 3D meshes is proposed in this paper. This method is based on skeleton. After region of the model to be deformed and several reference points are determined, a skeleton is created implicitly and automatically through the reference points and the screen. Then the vertices in the region to be deformed are mapped onto the skeleton, and the skeleton is deformed to the desired position constrained by the target points. Deformation of the region can be achieved by reverse mapping the skeleton points onto the region. To uniformly distribute the distortion brought by the deformation and preserve the details of the deformed region, the points on the skeleton are represented by linear rotation-invariant coordinates. The deformed skeleton is reconstructed in the least-squares sense. The skeleton are also can be used to scale and twist the region of the mesh. We demonstrate the interactivity and easy to use of our method by the detail-preserving editing of several models using little time. We also interpolate between the reference points and the target points to acquire the new target points for generating animation results.