GEOMETRIC MODELING

Geometric modeling techniques are used to represent and manipulate the shape and structure of objects in computer graphics, CAD (Computer-Aided Design), and other fields. These techniques are fundamental in creating digital models for design, simulation, and visualization. Here’s an overview of the primary geometric modeling techniques:

2D Geometric Modeling Techniques

  • Points: Basic entities representing locations in space.
  • Lines: Straight segments defined by two endpoints.
  • Curves: Smooth, continuous curves, such as Bézier curves and splines.
  • Polygons: Flat shapes with straight edges, like triangles and quadrilaterals, defined by vertices.

3D Geometric Modeling Techniques

Wireframe Modeling

  • Description: Represents objects using lines and vertices, creating a "skeleton" of the object.
  • Applications: Simple and fast, used for early design phases and visualization.
  • Limitations: Lacks detailed surface information, making it less useful for rendering and detailed analysis.

Surface Modeling

  • Description: Focuses on defining the surface of objects without considering volume. Surfaces can be smooth or rough and are defined by curves and surfaces.
  • Types:NURBS (Non-Uniform Rational B-Splines): Defines smooth, mathematically precise surfaces using control points and basis functions. Common in CAD applications.Bezier Surfaces: Defined by control points and used in various design applications for their smooth and flexible nature.Subdivision Surfaces: Uses a base mesh and subdivides it to create smooth, high-resolution surfaces.

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