I have attached the new files and all modifications done by Mihaela to
include the new shape TGeoXtru representing the old TXTRU shape.
Currently she implemented the Contains() method. The shape can be also
visualized in the pad or x3d (see atached macro). The only limitation in
x3d is that the end-polygons are not decomposed into convex polygons, so
in case the section of the TGeoXtru is concave the drawing is not well
handled.
  I also included a minor modification in TGeoManager.h needed by FLUKA
(that now can perform tracking and completers gAlice->Run() with TGeo!!!)


git-svn-id: http://root.cern.ch/svn/root/trunk@8163 27541ba8-7e3a-0410-8455-c3a389f83636

  kBig removed, accessible via inline : TGeoShape::Big()
  kDegRad, kRadDeg changed everywhere with TMath::RadToDeg(),
TMath::DegToRad()


git-svn-id: http://root.cern.ch/svn/root/trunk@7724 27541ba8-7e3a-0410-8455-c3a389f83636

several fixes in safety algorithms


git-svn-id: http://root.cern.ch/svn/root/trunk@7671 27541ba8-7e3a-0410-8455-c3a389f83636

Protection in SetColors in case the user application does not define a TApplication.


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git-svn-id: http://root.cern.ch/svn/root/trunk@7570 27541ba8-7e3a-0410-8455-c3a389f83636

  - safety implemented in TGeoCompositeShape following the general scheme
  - memory usage optimization in TGeoPainter


git-svn-id: http://root.cern.ch/svn/root/trunk@7212 27541ba8-7e3a-0410-8455-c3a389f83636

Alice can be drawn in 14.5s instead of 1400s.

-Add bit kVisOnScreen in TGeoAtt.
-Replace calls to TGeoPainter::IsOnScreen by calls to TGeoAtt::TestBit(TGeoAtt::kVisOnScreen)
-delete function TVirtualGeoPainter::IsOnScreen and TGeoPainter::IsOnScreen
-In TGeoNode replace call to TGeoPainter::IsOnScreen by TGeoAtt::TestBit(TGeoAtt::kVisOnScreen)


git-svn-id: http://root.cern.ch/svn/root/trunk@7172 27541ba8-7e3a-0410-8455-c3a389f83636

TFormula::TFormula(TFormula const &) was indirecly accessing uninitialized memory.
This is fixed by initializing the value in it.

TF1::Copy was leaking memory (not deleting existing arrays), once this was fixed,
this required to add the proper initialization in TF1::TF1(TF1 const &).


git-svn-id: http://root.cern.ch/svn/root/trunk@7170 27541ba8-7e3a-0410-8455-c3a389f83636

loop on all array elements. This gives a factor 10 when drawing Alice in ray-tracing mode.
Yet a better solution would be to build a sorted table of pointers to visible volumes
followed by a binary search.


git-svn-id: http://root.cern.ch/svn/root/trunk@7168 27541ba8-7e3a-0410-8455-c3a389f83636

In TGeoPainter::ShapeDistancetoPrimitive fix to avoid warnings with gcc3.4 when calling TMath::Sqrt.
explicit cast is required.


git-svn-id: http://root.cern.ch/svn/root/trunk@7141 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@7123 27541ba8-7e3a-0410-8455-c3a389f83636

- computation of normals to all primitive shapes, except TGeoCompositeShape
- improved TGeoTorus algorithms
- ray tracing feature : works as TGeoVolume::Draw() except that the
volume is ray-traced according to current visualization settings. All
features from a normal drawing are preserved : picking, zooming,
rotating,... The time for producing the ray-traced image scales with the
surface of the current pad (in pixels) and to the number of visible
nodes on screen. The current image can be clipped with any other shape,
defined in the reference frame of the current drawn volume. It works like:
    TGeoTubeSeg *clip = new TGeoTubeSeg(params...);
    gGeoManager->SetClippingShape(clip);
    someVolume->Raytrace();
    ...
    gGeoManager->SetClipping(kFALSE/kTRUE); to disable/enable clipping.
  If the clipping shape is changed, the old one is automatically deleted.


git-svn-id: http://root.cern.ch/svn/root/trunk@7121 27541ba8-7e3a-0410-8455-c3a389f83636

- TGeoManager::FindNormal(Bool_t forward=kTRUE)  = global algorithm for
finding the normal to the next/previous crossed surface, from the
current global point/direction. The current point does not necessary
need to be close to the surface, and the normal direction is always
returned so that its dot product with the current direction is positive
defined. One can get the normal after its computation with:
    Double_t *TGeoManager::GetNormal()

- Normal computation algorithms for box, arb8, trap, gtra, cone in the
corresponding shape classes.

- New primitive shape fully implemented, from visualization to
computation of distances (except the normal computation, missing also
for several other shapes). Class name: TGeoTorus, representing a torus
segment with :
    - R - radius of the circle representing the torus axis
    - Rmin - inner radius    (like a donut having a hole in the middle)
    - Rmax - outer radius (Rmin < Rmax < R)
    - Phi1 - start phi
    - Dphi - phi range

- Some unused obsolete methods removed from the TGeoShape class.
- modifications in TGeoIdentity default ctor to initialize gGeoIdentity
- TGeoMaterial::IsMixture(),
   TGeoMaterial::FindDuplicateMaterial(const TGeoMaterial *mat)

- several other minor changes


git-svn-id: http://root.cern.ch/svn/root/trunk@7022 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@6850 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@6834 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@6732 27541ba8-7e3a-0410-8455-c3a389f83636

TGeoArb8 - pictures added
TGeoBBox - doc, pictures
TGeoCache - id array for physical nodes
TGeoCompositeShape - doc added
TGeoCone - pictures, bug fiz in Z divisions, correction in 'safety'
TGeoEltu - pict. added
TGeoManager - registration of matrices, unique volume id's
TGeoMatrix - copy ctors., = and * operators, improvements, extensive doc.
TGeoNode - doc added
TGeoPara - pictures
TGeoPatternFinder - registration of pattern matrices
TGeoPcon - fix in Z divisions, fix in 'safety', pictures
TGeoPgon - same as Pcon
TGeoShape - doc added
TGeoSphere, Trd1,2, Tube - pictures added
TGeoVolume - doc updated

TGeoChecker - doc., improvement of extrusions checker by Mihaela
TGeoPainter - does not create polygons array in X3dBuffers when drawing
in pad
TGeoTrack - compilation warnings fixed


git-svn-id: http://root.cern.ch/svn/root/trunk@6725 27541ba8-7e3a-0410-8455-c3a389f83636

4 new files:
  geom/inc/TVirtualGeoTrack.h
  geom/src/TVirtualGeoTrack.cxx
  geompainter/inc/TGeoTrack.h
  geompainter/src/TGeoTrack.cxx

This new version adds support for track visualization. Adding tracks is a user task
and can be done using :
  TGeoManager::AddTrack() for primary tracks. The manager class knows
about the current primary and provides utility methods to
retreive/change this. Users has to handle only TVirtualGeoTracks.
Secondaries can be added to their primary :
  TVirtualGeoTrack::AddDaughter()
Points (x,y,z,tof) can be associated with a track :
  TVirtualGeoTrack::AddPoint()

  Providing tracks to the modeller and adding points are users tasks.
Track names should be supplied by users after creation :
    TVirtualGeoTrack::SetName() - note that tracks are not tnamed
objects, but their names are globally handled by the TGeoManager. The
usage of ROOT default particle names are recommended for tracks since it
triggers special colors/line attributes.
Tracks are drawable/pickable objects. Drawing options are :
  - default - only current track drawn
  - /D      - track and first level daughters
  - /*      - track and all descendents
  - /N<name> - only tracks from particles with given <name>

If points with time of flight are supplied, the drawing range tmin,tmax
can be specified :
  TGeoManager::SetTminTmax() (if no arguments time cut is supressed)

Tracks can be animated individually or global :
  TVirtualGeoTrack::AnimateTrack(tmin,tmax,nframes,option)
  TGeoManager::AnimateTrack(tmin,tmax,nframes,option)

Animation otions are :
  /G - animate also geometry in the given time interval
  /S - save all frames as .gif files
  drawing options act as well in animation. Options can be concatenated
and should be upper case (due to /N<name>)

If tracks are defined, the geometry I/O takes them into account.
However, when loading a geometry file containing tracks, libGeomPainter
has to be loaded since it contains the class implementation definition :
    gSystem->Load("libGeom")
    gSystem->Load("libGeomPainter")
    TGeoManager::Import("mygeom.root")


git-svn-id: http://root.cern.ch/svn/root/trunk@6563 27541ba8-7e3a-0410-8455-c3a389f83636

TGeoManager :
 - Safety() fully implemented using voxelization
 - FindNextBoundary() modified in order to compute safety only when
needed (when a value MAXSTEP representing the physical step is given as
input).
TGeoBBox :
  - correction for points exactly on box boundary for DistToIn()
TGeoVoxelFinder :
- fast check if distance to the voxel corresponding to a given node is
smaller than a input value - used in computing safety and distance to
next boundary;
TGeoChecker:
- CheckPoint() changed to use new Safety().


git-svn-id: http://root.cern.ch/svn/root/trunk@6144 27541ba8-7e3a-0410-8455-c3a389f83636

m andrei;
TGeoManager :
 - added TGeoManager::Safety() that computes the global safety for the
current point. This is just the first implementation, since it does not
use yet voxelization. This will be needed for the VMC because for the
time being safety is computed just for the crossed volumes along the
current direction plus the current volume, which of course is not enough
- finding the closest neighbour for a given point has to use a different
algorithm.
 - added weight estimation for the top volume

TGeoMaterial :
 - material index in the list of materials added as data member (as for
volumes) - I needed this for weight computation, but it will be helpfull
for any other analysis based on material indexing.

TGeoVolume :
 - weight estimation method in the context menu of volumes : can be
verbose (default) or not and takes as argument the desired precision.
Prints error (1 x SIGMA)

TGeoChecker:
 - implementation of weight estimation based on sampling random points
in the bounding box of a volume. Materials with rho<0.01 g/cm3 (mostly
gases) ignored due to the fact that we generally do not want to weight
the air in the top volume container (it can have quite significant mass)

other modified classes just provide redirection of Weight() method to
the geopainter package.


git-svn-id: http://root.cern.ch/svn/root/trunk@6136 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@6122 27541ba8-7e3a-0410-8455-c3a389f83636

"I managed to change completely the way to draw overlaps. Now class
TGeoOverlap has line and 3D attributes and paints by itself without
affecting the geometry at all. It prints the object stats when activated
in the pad."


git-svn-id: http://root.cern.ch/svn/root/trunk@6114 27541ba8-7e3a-0410-8455-c3a389f83636

add method TGeoManager::PrintOverlaps
fix compilation warnings


git-svn-id: http://root.cern.ch/svn/root/trunk@6085 27541ba8-7e3a-0410-8455-c3a389f83636

- new files TGeoOverlap.h/cxx in geompainter directory. Contains one
base class and 2 derived, describing overlaps. The CheckOverlaps()
methods in TGeoManager and TGeoVolume fills a list of these objects
which is held by TGeoManager class and appears in the browser as
"Illegal overlaps". The elements in this list are ordered according the
overlapping distance, big comes first and extrusions before node
overlaps. Double-clicking triggers drawing. Points in the
overlapping/extruding region are paint in red, while the 2 candidates in
bleu/green. The list of overlaps is dynamic and changes whenever a check
is done per volume.
- volumes with invalid shapes post a warning (see ATLAS)


git-svn-id: http://root.cern.ch/svn/root/trunk@6083 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@6080 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@6079 27541ba8-7e3a-0410-8455-c3a389f83636

 - several implementations of method Safety for shapes
 - few bug fixes in safety computation (phi segmented shapes)
 - volumes have now an unique ID that you can get with GetNumber()
 - Mihaela implemented an overlap checker that can be called either for
all geometry :
    TGeoManager::CheckOverlaps(Double_t ovlp=0.1) or just for a given
volume. OVLP is the lower overlapping limit. The checker looks for the
following errors in the geometry definition :
  1 - nodes extruding their mother - can be visualised with
TGeoManager::DrawExtrusion(char *mother, char *node) which draws mother
in blue and extruding daughter in red
  2 - ONLY brothers overlapping to each other - can be  visualized with
TGeoManager::DrawOverlap(char *volume, char *node1, char *node2) - node1
will appear in red and node2 in blue.
  These methods can be called only after CheckOverlaps() that prints the
list of overlaps. They are all in the context menu of both TGeoVolume
and TGeoManager.


git-svn-id: http://root.cern.ch/svn/root/trunk@6068 27541ba8-7e3a-0410-8455-c3a389f83636

 - new algorithms for computing safety for tubes, cones, pcon
 - TGeoChecker::CheckPoint() modified so that a "safety ball" is drawn
when one uses it. - global tracking modified such that the distances for most of the
shapes (except pgon and arb8) are computed only if the safety to these
shapes is smaller than a refference value.

 There is one limitation in case global safety is computed : the value
fSafety hold by TGeoManager does not represent the real safety, but the
minimum safety value among those calculated for the checked nodes.
Therefore if some node is "backwards" w.r.t the current direction, it
will be ignored in safety computation. I do not know if this affects
tracking, but I guess not. In short words, the global safety depends on
the current direction - for instance after just exiting a volume it
might happen that safety is not a very small value.


git-svn-id: http://root.cern.ch/svn/root/trunk@6038 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@5913 27541ba8-7e3a-0410-8455-c3a389f83636

Addition of the new class TGeoMedium


git-svn-id: http://root.cern.ch/svn/root/trunk@5848 27541ba8-7e3a-0410-8455-c3a389f83636

attached the last version, with bug fixes in tracking. Now you can do
lego plots for everything in alice. It does not do extra steps (except
very seldom in ITS in som very thin tubes - 1 extra step to cross). Much
more stable. I temporarly disabled TGeoVolume::CheckGeometry from the
context menu of volumes since it seems to have a bug that I need to fix.
 Much better version in computing distances.


git-svn-id: http://root.cern.ch/svn/root/trunk@5798 27541ba8-7e3a-0410-8455-c3a389f83636

solved some extra bugs so that all lego plots in non-MANY volumes
looks fine.


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git-svn-id: http://root.cern.ch/svn/root/trunk@5780 27541ba8-7e3a-0410-8455-c3a389f83636

New patch for shape algorithms, including :
- bug fixes in TGeoPgon::DistToIn()
- new algorithm by Mihaela for computing distances to a sphere (it was
missing).

So, now all algorithms per shape for computing distances should be "in
shape", at least as far as we have tested. Clearly some problems still
remain with the global algorithm including MANY's. At least now the lego
plot seem to work for the rootgeom example (shooting in /TOP/Replica
produces a nice plot). Obviously we will eventually find other bugs, but
the version as it is now seems to work reasonably good.


git-svn-id: http://root.cern.ch/svn/root/trunk@5758 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@5724 27541ba8-7e3a-0410-8455-c3a389f83636

Fixes to compile with no warnings with the option -ansi -pedantic
It also includes bug fixes for Trd1,2,  cone and pcon DistToIn/Out
algorithms.


git-svn-id: http://root.cern.ch/svn/root/trunk@5723 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@5690 27541ba8-7e3a-0410-8455-c3a389f83636

1. gpad - containing a modified src/TPad.cxx (notification to TView
class when resizing the pad and having perspective view)
2. base - containing modified TView.h/.cxx
3. geom, geompainter - modifications to geometry classes (perspective
view support + some bug fixes in shape algorithms)

 New features :
 - First implementation of TGeoChecker::CheckGeometry() by Mihaela : it
can be called from the volume context menu and for the time being just
draws the boundary intersections not matching on the way back and forth
(no histogram generated). Anyway, we discovered by using it that we have
to correct several bugs in the shapes DistToIn/Out algorithms ... :-(
- Perspective view fully implemented. Activated with TView(11) - this is
the default now for the new geometry classes. For all other views
(instantiated usually with TView(1)) one can switch parralel/perspective
from TView context menu.
- Navigation inside geometries based on perspective view : just draw
some geometry, then double-click on volumes in the pad - you will get a
nice grab-focus effect (specially if the number of volumes on screen is
relatively small)
- navigation keys : zoom in/out, move left/right/up/down exactly like in x3d
- resizing of pad and drawing of axes in TView supported - aspect ratio
always kept.


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