Read the BIC .obj 3D file format. This parses simple obj files to be used with RMINC 3D plotting functions.
read_obj(bic_obj, use_civet_triangles = FALSE)
| bic_obj | character file name of the obj file to read in |
|---|---|
| use_civet_triangles | logical, whether or not to use the predefined triangle matrix common to obj files produced by CIVET 1.1.12, saves IO time when triangles are known in advance. |
A two element list of class bic_obj containing a 3xV vertex_matrix
denoting the global coordinates of the each vertex and a 3xT triangle_matrix containing
triples of indices to the vertex matrix representing individual triangles.
This parser is not robust at all and relies on a strict structure for the .obj file at the present. It must be organized with a block of vertices, seperated by a space from a block of colour information (which is ignored), a space separated block of metadata and a space seperated block of multiples of 3, followed finally by a block of triangle membership. Only the vertex and triangle blocks are read in.