obj_io

obj_io, an Octave code which reads or writes some of the 3D graphics information stored in an Alias OBJ file.

Licensing:

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

Languages:

obj_io is available in a C++ version and a Fortran90 version and a MATLAB version and an Octave version.

Related Data and Programs:

obj_io_test

obj, a data directory which has some examples of OBJ files.

Source Code:

• ch_cap.m capitalizes a character.
• ch_eqi.m case-insensitive comparison of two characters.
• ch_index.m seeks the first occurrence of a character in a string.
• ch_is_control.m is TRUE if C is a control character.
• ch_is_digit.m is TRUE if C is a digit.
• ch_to_digit.m converts a character to the digit it represents.
• obj_face_node_print.m prints the node indices for each face.
• obj_node_xyz_print.m prints the node coordinates.
• obj_normal_vector_print.m prints the normal vectors.
• obj_read.m reads graphics information from a Wavefront OBJ file.
• obj_size.m determines sizes of graphics objects in an Alias OBJ file.
• obj_size_print.m prints sizes associated with an OBJ file.
• obj_vertex_normal_print.m prints the normal vectors indices per vertex.
• obj_write.m writes graphics information to an Alias OBJ file.
• r8vec_cross_product_3d.m computes the cross product of two vectors in 3D.
• s_cat.m concatenates two strings to make a third string.
• s_control_blank.m replaces control characters with blanks.
• s_eqi.m is a case insensitive comparison of two strings for equality.
• s_len_trim.m returns the length of a string to the last nonblank.
• s_to_i4.m reads an integer value from a string.
• s_to_r8.m reads an R8 from a string.
• word_next_read.m "reads" words from a string, one at a time.