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Which is the best definition of a polygon mesh?
A polygon mesh is a collection of vertices, edges and faces that defines the shape of a polyhedral object in 3D computer graphics and solid modeling.
Which is the best mesh representation of an object?
Face-vertex meshes represent an object as a set of faces and a set of vertices. This is the most widely used mesh representation, being the input typically accepted by modern graphics hardware. Face-vertex meshes improve on VV-mesh for modeling in that they allow explicit lookup of the vertices of a face, and the faces surrounding a vertex.
How are dynamic meshes different from regular meshes?
Render dynamic meshes require slightly less storage space than standard winged-edge meshes, and can be directly rendered by graphics hardware since the face list contains an index of vertices. In addition, traversal from vertex to face is explicit (constant time), as is from face to vertex.
How are polygon meshes different from wireframe models?
If the mesh’s edges are rendered instead of the faces, then the model becomes a wireframe model . Volumetric meshes are distinct from polygon meshes in that they explicitly represent both the surface and volume of a structure, while polygon meshes only explicitly represent the surface (the volume is implicit).
Are there any limitations to a polygon mesh?
Polygonal meshes do have their limitations though. It is difficult to approximate curved surfaces with a series of lines. Organic shapes require a large number of vertices. Objects like hair and liquid are also very difficult to simulate using polygon meshes. All our favorite video games and 3D cartoon characters are made from meshes.
Which is the most common shape used in polygonal modeling?
More complex polygons can be created out of multiple triangles, or as a single object with more than 3 vertices. Four sided polygons (generally referred to as quads) and triangles are the most common shapes used in polygonal modeling.