TRI_SURFACE_IO
Read and Write TRI_SURFACE 3D Graphics Files

TRI_SURFACE_IO is a FORTRAN90 library which reads or writes the 3D graphics information stored in a pair of files that represent a TRI_SURFACE, that is, an object whose surface is represented by a collection of triangles.

Licensing:

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

Languages:

TRI_SURFACE_IO is available in a C++ version and a FORTRAN90 version and a MATLAB version.

Related Data and Programs:

PLY_TO_TRI_SURFACE, a MATLAB program which extracts data from a PLY file and writes it to a TRI_SURFACE file.

TET_MESH_BOUNDARY, a FORTRAN90 program which returns the nodes and faces of the boundary of a tetrahedral mesh, which themselves form a 3D triangular mesh or "TRI_SURFACE".

TRI_SURFACE, a data directory which has some examples of TRI_SURFACE files.

TRI_SURFACE_DISPLAY, a MATLAB program which reads a TRI_SURFACE 3D graphics file and displays it in a 3D window.

TRI_SURFACE_DISPLAY_OPENGL, a C++ program which displays the 3D graphics information in a TRI_SURFACE file using OpenGL.

TRI_SURFACE_TO_PLY, a MATLAB program which extracts data from a TRI_SURFACE file and writes it to a PLY file.

Source Code:

• tri_surface_io.f90, the source code.

Examples and Tests:

• tri_surface_io_test.f90, a sample calling program.
• tri_surface_io_test.txt, the output file.
• sphere_nodes.txt, the node file for a TRI_SURFACE "sphere" triangular mesh.
• sphere_elements.txt, the element file for a TRI_SURFACE "sphere" triangular mesh.
• cube_nodes.txt, the node file for a TRI_SURFACE "cube" triangular mesh.
• cube_elements.txt, the element file for a TRI_SURFACE "cube" triangular mesh.

List of Routines:

• CH_CAP capitalizes a single character.
• CH_EQI is a case insensitive comparison of two characters for equality.
• CH_TO_DIGIT returns the integer value of a base 10 digit.
• FILE_COLUMN_COUNT counts the number of columns in the first line of a file.
• FILE_ROW_COUNT counts the number of row records in a file.
• GET_UNIT returns a free FORTRAN unit number.
• I4MAT_DATA_READ reads data from an I4MAT file.
• I4MAT_HEADER_READ reads the header from an I4MAT.
• I4MAT_TRANSPOSE_PRINT prints an I4MAT, transposed.
• I4MAT_TRANSPOSE_PRINT_SOME prints some of the transpose of an I4MAT.
• I4MAT_WRITE writes an I4MAT file.
• R8MAT_DATA_READ reads data from an R8MAT file.
• R8MAT_HEADER_READ reads the header from an R8MAT file.
• R8MAT_TRANSPOSE_PRINT prints an R8MAT, transposed.
• R8MAT_TRANSPOSE_PRINT_SOME prints some of an R8MAT transposed.
• R8MAT_WRITE writes an R8MAT file.
• S_BLANK_DELETE removes blanks from a string, left justifying the remainder.
• S_TO_I4 reads an I4 from a string.
• S_TO_I4VEC reads an I4VEC from a string.
• S_TO_R8 reads an R8 from a string.
• S_TO_R8VEC reads an R8VEC from a string.
• S_WORD_COUNT counts the number of "words" in a string.
• TIMESTAMP prints the current YMDHMS date as a time stamp.
• TRI_SURFACE_PRINT prints graphics information from a pair of TRI_SURFACE files.
• TRI_SURFACE_READ reads graphics information from a pair of TRI_SURFACE files.
• TRI_SURFACE_SIZE determines the size of a TRI_SURFACE object.
• TRI_SURFACE_SIZE_PRINT prints sizes associated with a TRI_SURFACE file.
• TRI_SURFACE_WRITE writes graphics information to a pair of TRI_SURFACE files.

You can go up one level to the FORTRAN90 source codes.