POLYGONAL_SURFACE_DISPLAY
Display a Polygonal Surface in MATLAB

POLYGONAL_SURFACE_DISPLAY is a MATLAB program which gets the names of the node and face files defining a polygonal surface, reads the information from the files, and displays the surface on the screen.

Usage:

polygonal_surface_display ( 'node_file', 'face_file' )

• 'node_file' is the name of the file containing node information;
• 'face_file' is the name of the file containing face information.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Related Data and Programs:

BALL_AND_STICK_DISPLAY, a MATLAB program which demonstrates the creation of a 3D "ball and stick" image;

BEZIER_SURFACE_DISPLAY, a MATLAB program which reads two files defining a Bezier surface and displays it.

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.

MESH_DISPLAY, a MATLAB program which reads data defining a polygonal mesh and displays it, with optional numbering.

MPAS_GRID_DISPLAY, MATLAB programs which can read an MPAS NETCDF grid file and display the primary polygonal mesh or the dual triangular mesh.

OBJ_DISPLAY, a MATLAB program which reads an OBJ file defining a 3D object and displays it within MATLAB.

POLYGONAL_SURFACE, a data directory which contains examples of polygonal surface files.

POLYGONAL_SURFACE_DISPLAY_OPENGL, a C++ program which displays a surface in 3D described as a set of polygons, using OpenGL.

QUAD_SURFACE_DISPLAY, a MATLAB program which reads files defining a 3D quadrilateral mesh surface and displays it within MATLAB.

STLA_DISPLAY, a MATLAB program which reads an ASCII STL file and displays it.

TET_MESH_DISPLAY, a MATLAB program which reads files defining a tet mesh and displays an image within MATLAB.

TRI_SURFACE_DISPLAY, a MATLAB program which reads data defining a triangular mesh of a 3D surface and displays it.

TRIANGULATION_DISPLAY_OPENGL, a C++ program which reads files defining a triangulation and displays an image using Open GL.

TRIANGULATION_ORDER1_DISPLAY, a MATLAB program which reads files defining a piecewise constant triangulation of data, and displays a corresponding 3D surface.

Reference:

1. Edward Angel,
   Interactive Computer Graphics, a Top-Down Approach with OpenGL,
   Addison-Wesley, 2000,
   ISBN: 0-201-38597-X,
   LC: T385.A514.

Source Code:

• polygonal_surface_display.m the source code.

Examples and Tests:

SPHERE_Q4 is a sphere, tiled with an 8 by 8 array of logically rectangular patches.

• sphere_q4_nodes.txt, the node file;
• sphere_q4_faces.txt, the face file;
• sphere_q4.png, a PNG image of the shape as displayed by POLYGONAL_SURFACE_DISPLAY.

SPHERE_T3 is a sphere, tiled with an 8 by 8 array of logically triangular patches.

• sphere_t3_nodes.txt, the node file;
• sphere_t3_faces.txt, the face file;
• sphere_t3.png, a PNG image of the shape as displayed by POLYGONAL_SURFACE_DISPLAY.

TETRA_T6 is a tetrahedron, tiled with 6-node triangles.

• tetra_t6_nodes.txt, the node file;
• tetra_t6_faces.txt, the face file;
• tetra_t6.png, a PNG image of the shape as displayed by POLYGONAL_SURFACE_DISPLAY.

You can go up one level to the MATLAB source codes.