fem2d_mesh_display_opengl

fem2d_mesh_display_opengl, a C++ code which reads the name of two data files defining a polygonal mesh, reads the data, and displays the mesh using OPENGL.

The files defining the mesh consist of one file containing the coordinates of the points, and a second file that lists the indices of the nodes making up each element. All the elements in the mesh must have the same order, that is, the number of vertices.

Usage:

fem2d_mesh_display_opengl prefix

• prefix_nodes.txt, the node coordinates;
• prefix_elements.txt, the element definitions.

Licensing:

The information on this web page is distributed under the MIT license.

Languages:

fem2d_mesh_display_opengl is available in a C++ version and a MATLAB version.

Related Data and Programs:

opengl_test, a C++ code which uses opengl() to display graphic images on the screen;

Reference:

1. Edward Angel,
   Interactive Computer Graphics,
   A Top-Down Approach with OpenGL,
   Addison-Wesley, 2000,
   LC: T385.A514.
2. Renate Kempf, Chris Frazier, editors,
   OpenGL Reference Manual,
   Addison-Wesley, 1997,
   LC: T385.O642.
3. Mason Woo, Jackie Neider, Tom Davis,
   OpenGL Programming Guide,
   Addison-Wesley, 1997,
   LC: T385.N435.
4. Richard Wright, Michael Sweet,
   OpenGL Superbible,
   Waite Group Press, 1996,
   LC: T385.W73.

Source Code:

• fem2d_mesh_display_opengl.cpp, the source code.
• fem2d_mesh_display_opengl.sh, compiles the source code.

ELL is an L-shaped region covered by triangles.

• ell_nodes.txt, the node coordinates.
• ell_elements.txt, the nodes that form each element.
• ell.png, a PNG image of the mesh.

RECT is a rectangular region covered by quadrilaterals.

• rect_nodes.txt, the node coordinates.
• rect_elements.txt, the nodes that form each element.
• rect.png, a PNG image of the mesh.

Q4 is a rectangular region covered by quadrilaterals, with a hole.

• q4_nodes.txt, the node coordinates.
• q4_elements.txt, the nodes that form each element.
• q4.png, a PNG image of the mesh.

HEX is a mesh of hexagons.

• hex_nodes.txt, the node coordinates.
• hex_elements.txt, the nodes that form each element.
• hex.png, a PNG mage of the mesh.