git-svn-id: https://geuz.org/svn/gmsh/trunk@18084 59c8cabf-10d6-4a28-b43f-3936b85956c4
trying to fix ortho + rotation (use same logic and params as in desktop version)


git-svn-id: https://geuz.org/svn/gmsh/trunk@18085 59c8cabf-10d6-4a28-b43f-3936b85956c4