[root] Log of /trunk/geom/geom/inc/TGeoTube.h

Revision 44507 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Jun 4 12:30:41 2012 UTC (2 years, 7 months ago) by axel
File length: 13191 byte(s)
Diff to previous 24870

Remove
  using namespace std;
from Riostream.h, which has huge consequences for all of ROOT.
Riostream.h is now a simple wrapper for fstream, iostream, iomanip for backward compatibility; Riosfwd.h simply wraps iosfwd.

Because of templates and their inline functions, Riostream.h needed to be included in headers, too (e.g. TParameter.h), which violated the assumption that Riostream.h is not exposing its using namespace std to headers.
ROOT now requires R__ANSISTREAM, R__SSTREAM, which does not change the set of supported compilers.

Without "using namespace std", several identifiers are now prefixed by std::; e.g. roofit/* source files now have a using namespace std to keep their coding style.
TFile::MakeProject() now generates "using namespace std" to convert the CINT-style class names into C++ ones.

Revision 24870 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Jul 17 16:30:58 2008 UTC (6 years, 6 months ago) by brun
File length: 13176 byte(s)
Diff to previous 22923

From Andrei:
new development related to overlap checking. This generates not only the shape mesh vertices but some 1000 points on the shape outline/surface. This is implemented for all important shapes except TGeoPcon (which works using the old method).

Revision 20882 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Nov 19 11:31:26 2007 UTC (7 years, 2 months ago) by rdm
Original Path: trunk/geom/inc/TGeoTube.h
File length: 12054 byte(s)
Diff to previous 19826

Set property svn:eol-style LF on all source and Makefiles. This should avoid
problems with Win32 line endings ending up in the repository. All MS tools
support LF eols fine.

Revision 18553 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Apr 23 08:58:53 2007 UTC (7 years, 9 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 12113 byte(s)
Diff to previous 15672

From Andrei:
- new method  TGeoShape::GetMeshNumbers() that allows getting the number of points, segments and polygons in the mesh of any shape - to be used by an upgrade of the overlap checker
- addition in the overlap checker to use the above info
- modifications in TGeoManager for improving performance for tracking geantinos with G4root interface

Revision 15672 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Jul 3 16:10:46 2006 UTC (8 years, 6 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 11846 byte(s)
Diff to previous 13282

from Axel:
Change the signature of SavePrimitive from

  void SavePrimitive(ofstream &out, Option_t *option);
to
  void SavePrimitive(ostream &out, Option_t *option = "");

With this change one can do, eg
   myhist.SavePrimitive(std::cout);

WARNING: do rm -f tree/src/*.o

Revision 13271 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Nov 17 13:17:55 2005 UTC (9 years, 2 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 11831 byte(s)
Diff to previous 11272

From Andrei & Mihaela:
a diff containing the implementation of TGeoShape::Capacity. There are also
few other fixes (see below):

Mihaela:

New method:
  Double_t TGeoShape::Capacity() const;
implemented for all supported shapes. The algorithms provide analytical computation of
shape capacity in [cm^3]. All algorithms are accurate with 2 exceptions:
- TGeoCtub : the formula is just an approximation due to the difficulties to integrate
over the phi angle in the general case.
- TGeoCompositeShape: the computation of the capacity is done by sampling, with an
accuracy of 1%.

Based on this method I extended the implementation of TGeoVolume::Weight(Double_t
precision, Option_t *option). The default value of option is now "va" meaning: verbose
+ analytical. Removing "a" from the default option performs computation of volume
weight using the old algorithm of sampling. I have checked the 2 ways of computing the
weight one against the other and they are consistent.

Andrei:

- fixed a memory leak related to TGeoShapeAssembly ownership
- fixed some tracking problems for assemblies (when the top volume was an assembly)

Revision 11272 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Wed Mar 9 18:19:27 2005 UTC (9 years, 10 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 11516 byte(s)
Diff to previous 11028

From Richard Maunder:

Changes to viewer infrastructure (TBuffer3D,TVirtualViewer3D) to
support:

i) Proper shape specific (sphere, tube, etc) descriptions in TBuffer3D
derived classes - c.f. abuse of raw tesselation blocks before.
ii) On demand filling of buffer sections as required by viewer.
iii) Support for local/master frame shapes descriptions & child object
rejection.
iv) Template/placed shapes ids - enabling viewer to detect/receive
common shapes once and just obtain the new position and id of the
duplicate.

Cleans up all producer (g3d/geom) code so no longer has an viewer
specific knowledge - Paint() methods replaced with
GetBuffer3D/FillBuffer3D methods which complete requested sections of
the buffer.

All viewer specific code now sits on the viewer implementation side of
TVirtualViewer3D. Added a TViewer3DPad class for performing the 3D draws
into pad. In future this should be merged with TView/TView3D possibly.

TBuffer3D is now stripped of functional code (aside from memory
management) and various viewer passback options there previously.
Enforced one way passing a const & to viewer.

Buffers (various types) are held as single static inside producer
function e.g. TGeoShape::GetBuffer3D (c.f. single generic buffer type
fetched from pad previously).

For g3d and geom shapes the top level geometry painter (TNode /
TGeoPainter) controlls painting process, requesting shapes to fill
buffer and passing to 3D viewer.

Exceptions are g3d's TPolyLine3D, TPolyMarker3D & TMarker3DBox. These
are 'standalone' shapes - no controlling 'painter' object. They still
implement Paint(), fill buffer and add to viewer directly.

3D viewer still held / created by pad - and pad has it's own viewer
object (TViewer3DPad).

NOTE:

1. Current scheme supports one 3D viewer only - pad, x3d or OpenGL. This
means that pad goes blank when x3d/OGL is spawned, and is updated again
when it is closed. To be revisited - need to support multiple viewers,
of multiple types - which implies explicit naming or pad controlling
enumeration.

2. OGL viewer now responds correct to modifications in pad, without
having to be reinvoked (as previously). x3d is still decoupled (as
previously) so does not rebuild - too difficult to get working.

Revision 11028 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Feb 3 11:40:39 2005 UTC (9 years, 11 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 11403 byte(s)
Diff to previous 11002

From Andrei Gheata:
The diffs for the changes from Mihaela. They implement the SavePrimitive method for:
- all shapes
- materials, mixtures and media
- matrices
- TGeoVolume - just a first version

What is missing:
Divisions + manager metod to save:
- all geometry
- just the branch corresponding to one volume

The differences compared to g2root are that:
- when saving just a a branch just materials/media/matrices for that branch are created (module encapsulation)
- instead of creating objects with numerical arguments, the coresponding variables are defined and used.
 e.g. instead of :
   new TGeoBBox("name", 10.,20.,30); the generated code is:

   dx = 10.;
   dy = 20.;
   dz = 30.;
   pShape = new TGeoBBox("name", dx,dy,dz);


The diffs contain also 2 shapes with boundary-safe algorithms: TGeoPara and TGeoTrap

Revision 11002 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Fri Jan 28 10:01:04 2005 UTC (9 years, 11 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 11184 byte(s)
Diff to previous 10952

From Andrei:
I attached the first big chunk of changes.
The methods changed are mostly the implementations of  TGeoShape::DistFromInside/DistFromOutside for some specific shapes. The new algorithms are boundary error tolerant, giving the correct distance even if the point is on the wrong side of the boundary. The calling sequence remains un-changed. The affected shapes for now are: box, trd1, trd2, tube, tube seg, cone, cone seg, pcon, pgon. I will complete few remaining for the full description of ALICE next week (para + arb8 family: trap,gtra).

Revision 10952 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Wed Jan 19 13:19:34 2005 UTC (10 years ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 11459 byte(s)
Diff to previous 10699

From Timur:
1. TGLTube replaced by TGLCylinder - generic class for tubes, cones,
segments and cuts (in theory, for polycones too). Tubes are drawn now as
strips (quad and triangle), real normals for tubes are calculated.
gl vertex arrays are used.
2. For each type of tube, I know the exact size of vertices arrays I need
- I don't need to use nsegments (because of real normals, we don't need
large tube segmentation to get smooth surfaces).

Revision 10699 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Tue Dec 7 14:24:57 2004 UTC (10 years, 1 month ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 11309 byte(s)
Diff to previous 10621

From Andrei Gheata:
I attached some diffs as proposed by Matevz and Alja which made their
own GL-based TGeo viewer in GLED. The changes are just structural:

 - lines/polygons filling splitted out from TGeoShape::Paint() as
TGeoShape::SetLinesAndPols(TBuffer3D *buff).
 - Shapes can create and fill a new TBuffer3D with the new method:
TGeoShape::Make3DBuffer() in the local frame

They need this since they have their own geometry tree parsing algorithm
(not the same as in TGeoPainter::PaintNode()) with another
structure/matrix handling system. Basically they just need one buffer
per volume, reusing them since they attach them to TGeoVolume as user
data. Not quite bad idea: they create only once a limited number of
buffers that they re-use without re-filling...

Revision 10621 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Nov 25 12:10:01 2004 UTC (10 years, 2 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 11087 byte(s)
Diff to previous 10498

From Andrei and Mihaela Gheata:
New shape TGeoHype from Mihaela.
This patch contains all modifications in TGeo, additions in
g2root to adjust format of MakeHype(...) and a fix in TBuffer3D.cxx
(Paint("SAME")). Also Mihaela modified geodemo.C

 The modifications (made by Timur probably) TGeoTube::Paint() for making
GL-like tubes are wrong so I temporary disabled them. The global matrix
filled to GL is wrongly retreived (+ it may come from other sources in
case of overlap drawing).

Revision 10498 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Nov 8 09:56:24 2004 UTC (10 years, 2 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 11149 byte(s)
Diff to previous 9311

From Andrei Gheata:
Change names of TGeo functions with confusing names
DistToIn    ->   DistFromOutside
DistToOut ->   DistFromInside
It should be much less confusing since it specifies where the starting
point is supposed to be.

Revision 9311 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Fri Jun 25 11:59:56 2004 UTC (10 years, 7 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 11089 byte(s)
Diff to previous 8648

From Andrei Gheata:
- TGeoShape::PaintNext() removed from all shapes (for the new
visualization system to be introduced shortly).
The new mechanism is implemented in
TGeoPainter::PaintShape (uses gGeoManager as we discussed), but it also
affect some shapes (TGeoCompositeShape at least)


- New  files: TGeoElement.h /.cxx representing a chemical element. This
is very helpful for the implementation of TFluka. Materials/mixtures can
be now built also based on this new class. An element table is kept
always transient in memory.

- Mihaela implemented the TGeoParaboloid shape: new files:
TGeoParaboloid.h/cxx.

Revision 8648 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Apr 22 14:07:15 2004 UTC (10 years, 9 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 11237 byte(s)
Diff to previous 7724

From Andrei Gheata:
- TGeoXtru navigation now fully implemented by Mihaela
- Improvements in the ray-tracing algorithm
- Added TGeoShape::GetNmeshVertices() to be used by visualization and by
the overlap checker in case of composite shapes (currently the checker
does not work with composites)
- I have created a new demo macro (see /tutorials/geodemo.C in the
attachment) to replace /tutorials/geoshapes.C. Functionality:

  - all previous functionality of geoshapes.C
  - new shapes examples added: TGeoTorus, TGeoXtru, TGeoCompositeShape
  - can call rootgeom.C
  - ray-tracing can be switched on/off
  - comments can be switched on/off
  - demonstrates alignment

Revision 7713 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Wed Dec 10 15:31:23 2003 UTC (11 years, 1 month ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 11012 byte(s)
Diff to previous 7671

From Andrei Gheata:

some changed files in TGeo improving the performance of
TGeant3 WITHROOT:

- safety was computed twice (both by TGeoManager::Safety() as well as
the shape algorithms called by TGeoManager->FindNextBoundary()). The
speed now with WITHROOT improves.

- few fixes in some shape algorithms related to boundary treatment (few
others to be done)
- Improved computation of normals
- Improved non-recursive algorithm of TGeoPgon::DistToOut()

- fix of some default value in all shape headers (0 replaced by kBig) to
allow range limited computation of DistToIn/Out - now working just for pgon.

Revision 7121 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Aug 21 08:27:34 2003 UTC (11 years, 5 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 11016 byte(s)
Diff to previous 7022

From Andrei Gheata:
- 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.

Revision 7022 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Jul 31 20:19:33 2003 UTC (11 years, 5 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 10580 byte(s)
Diff to previous 6304

From Andrei GHeata:

- 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

Revision 6068 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Fri Feb 7 13:46:48 2003 UTC (11 years, 11 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 10732 byte(s)
Diff to previous 6038

New version from Andrei and Mihaela:
 - 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.

Revision 6038 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Fri Jan 31 16:38:23 2003 UTC (11 years, 11 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 10596 byte(s)
Diff to previous 5972

New version of the geometry package from Andrei:
 - 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.

Revision 5972 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Jan 23 14:25:37 2003 UTC (12 years ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 10346 byte(s)
Diff to previous 5894

From Andrei:
- all shape classes : changed the prototype for Safety() method.
Eliminated validity checking in Divide() methods that are now globally
handled by TGeoVolume::Divide(). Added methods
TGeoShape::GetAxisName/Range(Int_t iaxis) which are used by the new
global division mechanism.
- safety for TGeoTrap now computed (pcon, pgon not yet)
- TGeoVolume : eliminated unnecesarry Divide() prototypes. The new
Divide() prototype is backwards compatible (old macros works with it)
but supports an option in order to allow all G3 division types. More
description in TGeoVolume::Divide().
- TGeoManager : Only one prototype for G3-like divisions left,
supporting all G3 options and also being able to assign to the division
volumes a medium different than the one of the divided volume. New
FindNode(x,y,z) implemented. New IsSameLocation(x,y,z) with the same
functionality as GINVOL.

Revision 5406 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Tue Oct 8 16:17:49 2002 UTC (12 years, 3 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 10260 byte(s)
Diff to previous 5354

new version of the geometry package from Andrei:
- bug fix in the destructor of TGeoPatternCylPhi
- several modifications in the default constructors of shapes.
- several corrections and "v" feature added to I/O
- removed base class for finders

 Now you can save voxels and retreive them with no problem. You can use :
  gGeoManager->Export("filename", "", "v") to do that. The size of files
without/with voxelization are :
    Exp           no voxels saved             voxels saved
ALICE            404227                        719703
CMS               550440                       1275590
ATLAS         1858198                      3335166

Be careful, the files TGeoFinder.h and TGeoFinder.cxx have been removed.
Suggest doing:

rm geom/src/*.o geom/src/G__*

Revision 5354 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Fri Sep 27 16:16:06 2002 UTC (12 years, 3 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 10248 byte(s)
Diff to previous 4918

New version of the geometry package by Andrea & Mihaela Gheata
New features:
 -I/O for all geometry classes. For example, to save/restore a geometry structure,
   TFile f("mygeom.root","recreate");
   gGeoManager->Write("mygeom");
  and to read it back;
   TFile f("mygeom.root");
   f.Get("myGeom");
   gGeoManager->CloseGeometry();

 -Composite shapes fully implemented (no visualisation yet).
  A composite shape is built out of basic shapes and transformations via
  a simple formula mechanism, eg assuming a TGeoTube "tub1" and a TGeoMatrix "r1",
  we can build a composite shape with:
    TGeoCompositeShape *comp = new TGeoCompositeShape("comp",formula); where
    char* formula="tub1+tub1:r1"
  This will create the union of a tube with itself rotated.
  The operators recognized by the geometry formula parser are "+","-","*"
  for union, subtraction and intersection respectively. The colon ":" can be
  used to specify a transformation for a given component.

 -The voxelisation in cylindrical coordinates added as an optional optimisation
  algorithm.

 -Some bug fixes and several improvements in the tracking-related algorithms.

Revision 4874 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Wed Jul 10 19:24:17 2002 UTC (12 years, 6 months ago) by brun
Original Path: trunk/geom/inc/TGeoTube.h
File length: 8875 byte(s)
Diff to previous 4841

A new iteration to port the geometry package on different systems.
Progress towards ROOT naming and style conventions
Add constness in most classes (work not yet completed).

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