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Solid Modelling in CADCAM
Interactive Solid Modelling Systems
Representation of Solids
9 other sections not shown
100 CONTINUE algorithm B-rep B-spline patch B-spline surfaces Boolean operations boundary curves boundary representation C-loop CAD/CAM characteristic polyhedron computed constructive solid geometry cont control points convex convex hull Coons patch corner cross-boundary tangent CSG-rep cubic Bezier curve curvature vectors curved edges curved mesh data structure defined deleted described design process DESIGNBASE DIMENSION dot product E3 and E4 edge E0 edges and vertices edges attached end points equation Euler operations face F face-set free-form surfaces geometric modelling given glue operation GOTO Gregory patches hidden line removal int body internal curves interpolate intersection J-edges J-lines J-points J-vertices loop L2 MEKL MEL operation method node normal derivatives normal vectors number of edges parametric patch points P0 polygon primitive operations procedure quadratic reference functions represented rounding operation rounding value shown in Figure shows solid modelling system specified stored struct subdivision points SUBROUTINE surface model surface patch vertex winged-edges wire-frame ZG(L ZP(L