An algorithm for generating NC tool paths for arbitrarily shaped pockets with islands
ACM Transactions on Graphics (TOG)
A procedural feature-based approach for designing functional surfaces
Topics in surface modeling
A new approach towards free-form surfaces control
Computer Aided Geometric Design
D-NURBS: A Physics-Based Framework for Geometric Design
IEEE Transactions on Visualization and Computer Graphics
Specification of freeform features
SM '03 Proceedings of the eighth ACM symposium on Solid modeling and applications
Generalized filleting and blending operations toward functional and decorative applications
Graphical Models - Special issue on SMI 2003
A feasible approach to the integration of CAD and CAPP
Computer-Aided Design
Constrained curve fitting on manifolds
Computer-Aided Design
Self-intersection detection and elimination in freeform curves and surfaces
Computer-Aided Design
Approximate computation of curves on B-spline surfaces
Computer-Aided Design
Surface reconstruction via geodesic interpolation
Computer-Aided Design
Automatic recognition of features from freeform surface CAD models
Computer-Aided Design
Numeric and curve parameters for freeform surface feature models
Computer-Aided Design
A framework for extendable freeform surface feature modelling
Computers in Industry
Computer-Aided Design
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Embedding a number of displacement features into a base surface is common in industrial product design and modeling, where displaced surface regions are blended with the unmodified surface region. The cubic Hermite interpolant is usually adopted for surface blending, in which tangent plane smoothness across the boundary curve is achieved. However, the polynomial degree of the tangent field curve obtained symbolically is considerably higher, and the reduction of the degree of a freeform curve is a non-trivial task. In this work, an approximation surface blending approach is proposed to achieve tangential continuity across the boundary curve. The boundary curve is first offset in the tangent field with the user-specified tolerance, after which it is refined to be compatible with the offset curve for surface blending. Since the boundary curve is offset in a three-dimensional (3D) space, the local self-intersection in the offset curve is addressed in a 2D space by approximately mapping the offset vectors in the respective tangent planes to the parameter space of the base surface. The proposed algorithm is validated using examples, and the normal vector deviation along the boundary curve is investigated.