- make the rotation matrix a matrix of doubles (instead of floats)

- store the modelview and the projection matrices in CTX

- new unproject() routine to transform window coordinates to model
  coordinates

- cleaned up all the static variables in the Opengl_Window class

- small fix to reduce normal clamping when zooming

Say we didn't find any solver plugins if GMSHPLUGINSHOME is not defined.

This is not perfect, but it allows us to *not* display the annoying
popups for "regular" users, while still registering JF's solver plugin...

'External data source' -> 'Data source'

if we have no geometry and no mesh, use the max of all view bounding boxes
(instead of the bounding box of the last view only)

typo

small cleanup + better error detection

allow x,y,z in expressions

init mesh fails for very thin regions

forgot to update help strings

The new "External data source" option makes the "Vector type->Raised
view" unnecessary. Just select "Vector type->Displacement" and choose
the data source from any other view in the list--including "Self"!

added small option to color the arrows representing a vector field
according to the data from another view

new option to draw the arrows with a fixed size

added a call to GUI::check() to make the GUI more responsive

add note on tensor field display

2nd order view example from JF

new solver options: SocketCommand and NameCommand (patch by
<C.Stott@surrey.ac.uk>)

fixed small syntax mistakes (missing semi-colons, etc.)

- added a couple of entries in the FAQ
- inluded the FAQ in the texinfo manual
- merged README.gui in the texinfo manual

shorter Draw_TensorElement routine

make displacement drawing code much shorter

Generalized "Raised scalar view" vector type: one can now also raise
vector and tensor views. (It's now simply called "Raised view".)

small fixes for last commit:

- only delete view.adaptive if we really delete the view (we might want to
  use the adaptive data in a duplicate view)

- add missing opt_view_global_zoom in update_view()

- don't even try to open StructuralSolver's data files if GMSHPLUGINSHOME
  is not defined

New high order interpolation.

JFR

minor fix: don't change xyzv::eps permanently in smooth()

fix minimum height of the solver window (was a bit too small)

Trying to fix Patrick's problems when launching getdp on Windows...

When gmsh is started from the command line on Windows, cygwin does
not (for some obscure reason) prepend '/cygdrive/x/' to the path. Since
we check for '/cygdrive/' in SystemCall() in order to sanitize the
path before passing it to CreateProcess(), the system call fails.

I think the right way to deal with this is to actually remove the
path change in SystemCall() (since we only change the leading part),
and use the official cygwin API to change the path of every piece
that will eventually end up in the argument of CreateProcess().
And that's what "FixWindowsPath()" now does...

added an option to specify the maximum delay Gmsh will wait for a
solver to respond

forgot to commit this

1.56

work around the "window in window in window" MacOS X FLTK bug (ColorBar_Window
not showing completely) by replacing the option sub-windows with groups.

complete WriteView in parsed format (print strings)

draw the labels a little bit closer to the entities