PLY_TO_OBJ
PLY => OBJ Graphics File Conversion

PLY_TO_OBJ is a C program which converts a PLY 3D graphics file to an OBJ file.

The program only extracts information about vertices, faces, and vertex normals.

The PLY format allows faces to have as many vertices as desired. The OBJ format assumes faces are triangular. This program tries to convert nontriangular PLY faces to triangular faces acceptable to the OBJ format.

Usage:

ply_to_obj [flags] < file.ply > file.obj

• file.ply is the PLY file to be read;
• file.obj is the OBJ file to be created;

Related Data and Programs:

OBJ, a data directory which contains examples of OBJ files, a Wavefront file format for 3D graphics;

OBJ_TO_PLY is a C program which converts an OBJ file to a PLY file.

PLATO_PLY is a C program which writes out any of the five Platonic solids as a PLY file, by Greg Turk.

PLY is a data directory which contains some information about the PLY format.

PLY_IO is a C library which can read or write a PLY file, by Greg Turk.

PLY_TO_IV is a C program which converts a PLY 3D graphics file to Inventor format, by Greg Turk.

PLY_TO_TRI_MESH is a MATLAB program which can read a PLY file, extract the polygonal surface information, and return it as a TRI_MESH dataset.

TRI_MESH_TO_PLY is a MATLAB program which converts a TRI_MESH data structure into a PLY data structure.

Author:

Greg Turk

Source Code:

• ply_to_obj.c, the source code;
• ply_to_obj.sh, commands to compile, link and load the source code;

Examples and Tests:

CUBE is a simple definition of a cube.

• cube.ply, the PLY file read by the command;
• cube.obj, the OBJ file created by the command.

List of Routines:

• MAIN is the main program for PLY_TO_OBJ.
• USAGE prints the usage information when the program is called incorrectly.
• READ_PLY_FILE reads a PLY file from standard input.
• WRITE_OBJ_FILE writes an OBJ file to standard output.

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