Search results
Results from the WOW.Com Content Network
The most "primitive" primitives are point and straight line segment, which were all that early vector graphics systems had. In constructive solid geometry , primitives are simple geometric shapes such as a cube , cylinder , sphere , cone , pyramid , torus .
The relative neighborhood graph of 100 random points in a unit square. In computational geometry, the relative neighborhood graph (RNG) is an undirected graph defined on a set of points in the Euclidean plane by connecting two points and by an edge whenever there does not exist a third point that is closer to both and than they are to each other.
In graph theory, a random geometric graph (RGG) is the mathematically simplest spatial network, namely an undirected graph constructed by randomly placing N nodes in some metric space (according to a specified probability distribution) and connecting two nodes by a link if and only if their distance is in a given range, e.g. smaller than a certain neighborhood radius, r.
Constructive solid geometry has a number of practical uses. It is used in cases where simple geometric objects are desired, [citation needed] or where mathematical accuracy is important. [4] Nearly all engineering CAD packages use CSG (where it may be useful for representing tool cuts, and features where parts must fit together).
graph-tool is a Python module for manipulation and statistical analysis of graphs (AKA networks). The core data structures and algorithms of graph-tool are implemented in C++ , making extensive use of metaprogramming , based heavily on the Boost Graph Library . [ 1 ]
A chain graph is a graph which may have both directed and undirected edges, but without any directed cycles (i.e. if we start at any vertex and move along the graph respecting the directions of any arrows, we cannot return to the vertex we started from if we have passed an arrow). Both directed acyclic graphs and undirected graphs are special ...
The Gabriel graph contains, as subgraphs, the Euclidean minimum spanning tree, the relative neighborhood graph, and the nearest neighbor graph. It is an instance of a beta-skeleton . Like beta-skeletons, and unlike Delaunay triangulations, it is not a geometric spanner : for some point sets, distances within the Gabriel graph can be much larger ...
In computer science, a graph is an abstract data type that is meant to implement the undirected graph and directed graph concepts from the field of graph theory within mathematics. A graph data structure consists of a finite (and possibly mutable) set of vertices (also called nodes or points ), together with a set of unordered pairs of these ...