TRI_SURFACE_IO
Read and Write TRI_SURFACE 3D Graphics Files

TRI_SURFACE_IO is a MATLAB library which reads or writes the 3D graphics information stored in a pair of files that represent a TRI_SURFACE object.

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:

OBJ_TO_TRI_SURFACE, a MATLAB program which reads an OBJ file and extracts the surface mesh data as a TRI_SURFACE dataset.

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

STLA_TO_TRI_SURFACE, a MATLAB program which reads an ASCII STL file and extracts the surface mesh data as a TRI_SURFACE dataset.

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_OBJ, a MATLAB program which reads a TRI_SURFACE dataset and extracts the surface mesh data as an OBJ file.

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

TRI_SURFACE_TO_STLA, a MATLAB program which reads a TRI_SURFACE dataset and extracts the surface mesh data as an ASCII STL file.

Source Code:

• file_column_count.m, counts the number of columns in the first line of a file.
• file_row_count.m, counts the number of row records in a file.
• i4mat_data_read.m, reads a table from an integer TABLE file.
• i4mat_header_read.m, reads a table header from an integer TABLE file.
• i4mat_transpose_print.m, prints the transpose of an I4MAT.
• i4mat_transpose_print_some.m, prints the transpose of some of an I4MAT.
• i4mat_write.m, writes an integer TABLE file.
• r8_epsilon.m, returns the R8 machine precision.
• r8mat_data_read.m, reads the data of an R8MAT file.
• r8mat_header_read.m, reads the header of an R8MAT file.
• r8mat_transpose_print.m, prints the transpose of an R8MAT.
• r8mat_transpose_print_some.m, prints the transpose of some of an R8MAT.
• r8mat_write.m, writes an R8MAT file.
• s_len_trim.m returns the length of a string to the last nonblank.
• s_word_count.m, counts the number of words in a string.
• timestamp.m prints the current YMDHMS date as a time stamp.
• tri_surface_print.m prints data associated with a TRI_SURFACE file.
• tri_surface_read.m reads graphics information from a TRI_SURFACE file.
• tri_surface_size.m determines sizes of graphics objects in a TRI_SURFACE file.
• tri_surface_size_print.m prints sizes associated with a TRI_SURFACE file.
• tri_surface_write.m writes graphics information to a TRI_SURFACE file.

Examples and Tests:

• tri_surface_test.m, commands to run all the tests.
• tri_surface_prb_output.txt, the output file.
• tri_surface_test01.m, tests OBJ_SIZE.
• tri_surface_test02.m, tests OBJ_READ.
• tri_surface_test03.m, tests OBJ_WRITE.
• 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.

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