TRIANGULATION_DISPLAY_OPENGL, a C++ code which reads the name of two data files defining a triangulation, reads the data, and displays the triangulation using OpenGL.
The files defining the triangulation consist of one file containing the coordinates of the points, and a second file that lists the indices of the nodes making up each triangle. Either 3-node or 6-node triangles may be used.
triangulation_display_opengl prefixwhere prefix is the common filename prefix:
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
TRIANGULATION_DISPLAY_OPENGL is available in a C++ version.
CAUSTIC_OPENGL, a C++ program which computes a caustic curve and displays it using OpenGL.
FEM_BASIS_T3_DISPLAY, a MATLAB program which displays a basis function associated with a linear triangle ("T3") mesh.
FEM_BASIS_T6_DISPLAY, a MATLAB program which reads a quadratic triangle mesh and displays any associated basis function.
FERN_OPENGL, a C++ program which uses OpenGL to display the Barnsley fractal fern.
LIFE_OPENGL, a C++ program which simulates a version of John Conway's "Game of Life", displaying the results using OpenGL.
LIGHTS_OUT_OPENGL, a C++ program which sets up a "Lights Out" game and allows the user to solve it, using the OpenGL graphics window.
LISSAJOUS_OPENGL, a C++ program which computes a Lissajous figure and displays it using OpenGL.
MESH_DISPLAY_OPENGL, a C++ program which reads data defining a polygonal mesh and displays it using OpenGL.
opengl_test, C++ codes which illustrate the use of the OpenGL graphics library;
POLYGONAL_SURFACE_DISPLAY_OPENGL, a C++ program which displays a surface in 3D described as a set of polygons, using OpenGL.
ROTATING_CUBE_DISPLAY_OPENGL, a C++ program which displays a rotating color cube in 3D, using OpenGL;
SCREENSHOT_OPENGL, a C++ program which shows how a program using the OpenGL graphics library can save a screenshot of the graphics being displayed.
SPHERE_XYZ_DISPLAY_OPENGL, a C++ program which reads XYZ information defining points in 3D, and displays a unit sphere and the points, using OpenGL.
TRIANGULATION_DISPLAY, a MATLAB program which displays the nodes and elements of a triangulation on the MATLAB graphics screen;
TRIANGULATION_HISTOGRAM, a C++ program which computes histograms of data over a triangulation.
TRIANGULATION_MASK, a C++ program which takes an existing triangulation and deletes triangles and their corresponding nodes as requested by the user.
TRIANGULATION_NODE_TO_ELEMENT, a C++ program which reads files describing a set of nodes, their triangulation, and the value of one or more quantities at each node, and outputs a file that averages the quantities for each element. This operation in effect creates an "order1" finite element model of the data.
TRIANGULATION_ORDER3, a data directory which contains a description and examples of order 3 triangulations.
TRIANGULATION_ORDER6, a data directory which contains a description and examples of order 6 triangulations.
TRIANGULATION_PLOT, a C++ program which reads data defining a triangulation and creates a PostScript image of the nodes and triangles.
TRIANGULATION_QUAD, a C++ program which estimates the integral of a function over a triangulated region.
ELL3 is an L-shaped region, which may be triangulated by order-3 triangles.
triangulation_display_opengl ell_nodes.txt ell_tri3.txt
ELL6 is an L-shaped region, which may be triangulated by order-6 triangles.
triangulation_display_opengl ell_nodes.txt ell_tri6.txt