pretty print

speedup view removal (only call UpdateViewsInGUI once per group of
deletions)

- the main menu is now scrollable when there are more than 25
buttons and it can handle an arbitrary number of buttons (this removes
the "100 views max in the GUI" limitation)

- the view number is now also displayed in the menu (to make it easier
to find the view when one has many many views)

- added "Remove empty views" menu item

A function was bugging gcc 3.3.3

missing case

added W coordinate for light sources (so that we can have "spot sources")

For all our mechanical engineering friends out there, I just cleaned up the stuff
I did with Sean last year, i.e., allow to draw a vector field as a displacement
map, with another scalar field displayed instead of the displacement norm.

It's basically the same as Plugin(DisplacementRaise), but it does not modify the
actual data inside the view (so e.g. you cannot save it). Instead, it's implemented
as an alternative "Vector display" mode. This allows to easily animate deformed meshed
with arbitrary scalar fields drawn on them. (The GUI for this is kinda lame, but
it works: just select Vector display->Raised scalar view, select the scalar view
number, et voila.)

I also generalized the smooth normal code path a little, so that we can have smooth
normals for vector-as-displacement and tensor-as-von-mises plots, too.

fix spelling

fix support for multiple light sources (+ add a couple of options to set
the light color and specular reflection exponent)

added vertex arrays in volumes to store the boundary of the cuts
when we draw them "as surfaces" (for Philou, not tested yet)

airplane work: reorganized the option panels in the GUI (more descriptive
labels, same categories for geo/mesh/post, etc.)

draw the clipping/cut plane dynamically when we change the coefficients

added an option to cut only volume elements

- added an option to draw the bounding boxes

- simplified the color_scheme options

- added tooltips to make the discovery of shortcuts easier

generalized + added GUI for clipping planes

make depend

remove debug message

- moved the smooth normals stuff into a separate file
- added smooth normal support for surface meshes (very nice!)

removed the bool hacks

put missing GPL license block

- fixed seg fault in Plugin(Triangulate)
- added BBox computation in plugins when the coordinates are changed

fix crash when saving options and all views have been removed

update command line help

added optimization hooks in the interface (GUI + comamnd line)

Merged Netgen 4.3.1: a Delaunay/Frontal 2D/3D mesh generator.

Thanks a lot to Nicolas Tardieu for this!

- mesh.algo -> algo2d and algo3d
- replaced most of the remaining radio buttons with Fl_Choices (requires
  less screen real estate)

create the default project file in the home directory if no "current"
directory is defined (e.g. when double-clicking on the icon on Windows/MacOS)

Do a default List_Create in List_CreateFromFile instead of returning NULL.
(This fixes the problems in Plugins that assume that the element lists
are all ready to be added into.)

replace CutCircle/CutCurve with CutParametric

forgot to deal with quadrangles here

- couple of aesthetic changes in Options->General

- tentative fix of home directory problem on Windows95/98

- made Layer's region numbeing behaviour consistent between
  lines/surfaces/volumes

- force mesh.changed when we modify surface_edges/faces display

quick hack to implement "fake transparency" as in xpost

disable the perspective button for now

added small button to switch between perspective and orthographic
projection modes

fix for the "per time step" min/max

removed old unused options

- don't call glNormal unnecessarily

- do The Right Thing (TM) with the light position, i.e., set it
  *before* we multiply by the modelview matrix. It's much easier
  to achieve predictable lighting results like this: (-1,0,0)
  simply means "light from the left", (0,1,0) means "light from
  the top", (0,0,1) means "light from the front", etc.

- fixed orientation of boundary of post tet

- added new LightTwoSide option: with this turned off, we achieve
  roughly the same performance as SceneViewer on large data sets, i.e.,
  around 1 million triangles (SceneViwer is the "industry standard"
  OpenGL viewer from SGI). Nice... ;-)