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Surface Modeling in computer aided designing
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- 2. Surface Modeling. • Theobject to be modeled is represented by the surface.
- 3. Surface modeling • Itcan be considered as extension of wireframe modeling. • It basically consists of wireframe entities which forms the basis to create surface entities. • They are suitable for sculptured surfaces such as car bodies, ship hulls
- 4. Surface modeling VsWireframe • Less ambiguous representation. • More suitable for engineering and design applications such as interference checking, cross section view, volume calculations etc. • Provides hidden line and hidden surface removal algorithm. • Shading for realism to displayed geometry.
- 5. Limitations • Not suitabledrafting. • Requires more trained person with good mathematical background. • More CPU computation time and storage. • Still ambiguous to some extent. • Unnecessary manipulations of wireframe entities required (hole in surface, needs surface patches to create full surface)
- 6. Types of Surfacesor Surface Entities. Analytical • Plane surface • Ruled/curved surface. • Surface of revolution • Tabulated cylinder Synthetic • Bicubic Hermite spline surface • B spline surface. • Rectangular and triangular bezier patches • Coons Patches • Gordon surface
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- 8. Curved Surface orRuled Surface • Single curved surface
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