OpenPTV/openptv — pull request #32 by alexlib (2014-01-07 21:44:39+00:00)
Title: trafo.{c,h} pull request

After ray_tracing we can proceed (slowly) towards epi.c - for that we need first to finish:
1. trafo.{c,h} - the present pull request
2. imgcoord.{c,h}
3. multimed_nlay_

and only then we'll be ready for epi.{c,h}

Meanwhile, this pull request is rather simple: there are four subroutines in trafo.{c,h} with the respective tests in check_trafo.c - tests pass on Mac OS X

Please, review