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Model size License Comments Stanford bunny: 1993-94 [11] Greg Turk, Marc Levoy at Stanford University: Ceramic rabbit [12] 69,451 triangles [11] Figurine of unknown authorship and licensing status, scan itself released under a two-clause BSD license. A test of range scanning physical objects. Originally .ply file. Stanford dragon: 1996 [11 ...
A triangle fan is a primitive in 3D computer graphics that saves on storage and processing time. It describes a set of connected triangles that share one central vertex (unlike the triangle strip that connects the next vertex point to the last two used vertices to form a triangle), possibly within a triangle mesh .
The triangles that share this edge are removed from the mesh. The vertex vt is also removed from the mesh. Any triangles that shared vt have that vertex replaced by vk. Figure 1 [where?] shows a triangle mesh and a sequence of three edge collapses applied to the mesh. [citation needed]
The faces usually consist of triangles (triangle mesh), quadrilaterals (quads), or other simple convex polygons . A polygonal mesh may also be more generally composed of concave polygons, or even polygons with holes. The study of polygon meshes is a large sub-field of computer graphics (specifically 3D computer graphics) and geometric modeling ...
The basic object used in mesh modeling is a vertex, a point in three-dimensional space.Two vertices connected by a straight line become an edge.Three vertices, connected to each other by three edges, define a triangle, which is the simplest polygon in Euclidean space.
Flipping is used to improve quality measures of a triangle such as skewness. Mesh smoothing enhances element shapes and overall mesh quality by adjusting the location of mesh vertices. In mesh smoothing, core features such as non-zero pattern of the linear system are preserved as the topology of the mesh remains invariant.
Mesh generation is deceptively difficult: it is easy for humans to see how to create a mesh of a given object, but difficult to program a computer to make good decisions for arbitrary input a priori. There is an infinite variety of geometry found in nature and man-made objects. Many mesh generation researchers were first users of meshes.
3D models are most often represented as triangulated polyhedra forming a triangle mesh. Non-triangular surfaces can be converted to an array of triangles through tessellation . Attributes from the vertices are typically interpolated across mesh surfaces.