TEveBoxSet classes:
Introduce new structure to draw cone set. 

tutorials/eve/boxset_test.C
Add function cone_test() to test cone set.

TEveDigitSet, TEveQuadSet:
Fix member in ERenderMode_e, to draw properly in wire-frame rendering mode.


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  Fix creation of TGLWidget so that it also works with software
  rendering where few visuals are available.
  This means that we have to break TGLWidget construction into three
  phases (required for software rendering on X11):
  1. find appropriate visual and create window;
  2. create widget using the above window;
  3. create gl-context binding them together.
  To avoid unexpected behaviour the construction is now done via
  static constructor 'TGLWidget* TGLWidget::Create()' and the
  actual constructor has been made protected.

- TGLEmbeddedViewer, TGLSAViewer
  Use new TGLWidget construction syntax.

- TGLPShapeObjEditor
  Use new TGLWidget construction syntax.
  Fix rendering and update of color-sphere.


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TEveCaloLegoGL:
Fix a crash when going from 3D to 2D lego view.

SmallFixes:

- CaloLegoGL, CaloLego
Change offset of XY axis titles.
Check gap between projected bin lines around average eta and phi values.

- cms_calo.C
Change color of towers to make towers more visible in 2D view.


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them when setting camera rotation.


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  Use tower-size as default representation for projected view.

- TEveGeoNode
  Use default constructor of TGeoManager so that it does not attempt to
  register itselg to gROOT which might not be initialized yet.
  (Thanks to Bertrand for tracing this down.)


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- Solve uninitialized variable in TGLWidget
  (thanks to Timur for the report)


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TEveGValuators:
Sub-class from TGWidget and add optional widget-id argument in
constructors.

TEveCalo-classes, cms_calo.C:
Add nested structure SliceInfo_t to hold data for each slice in
histogram stack: name, threshold and color.


git-svn-id: http://root.cern.ch/svn/root/trunk@24173 27541ba8-7e3a-0410-8455-c3a389f83636

Remove TGLWidgetContainer class and change inheritance of
TGLWidget as following:
before: class TGLWidget : public TGCanvas, public TGLPaintDevice
now:    class TGLWidget : public TGFrame,  public TGLPaintDevice
 
Now TGFrame base class is used directly to tie with the GL Context,
instead of creating an external window and registering it in TVirtualX
window list.


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TEveCaloData:
Change GetCellData() to const.

TEveCalo:
Set threshold in SetData().

TEveCaloLegoGL:
Fix tick-marks and change rendering order of cells and plane.

TGLCamera:

Coordinate-system conversion functions ViewportDeltaToWorld(),
ViewportToWorld() and WorldToViewport now take an optional argument
specifying model-view matrix to be used in calculation.


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  Added member 'Bool_t fImportEmpty' - this forces the projection manager
  to also import sub-trees without any projectable elements.
  Useful if one expects a completely parallel element structure in
  projected replica.

- TEveSelection:
  Added method 'void RemoveImpliedSelected(TEveElement* el)' needed for
  deregistration of implied-selected elements during their destruction.

- TEveManager:
  - In PreDeleteElement() check if the element is implied selected or
    highlighted and deregister it from there.
  - In function InsertVizDBEntry():
    a) added argument 'Bool_t update';
    b) when replacing the model-element copy its children to the new
       model and optionally update their viz-params.

- TEveElement:
  - Add methods to simplify propagation of visualization-parameters
    between model-elements and their clients
  - Add members 'Int_t fParentIgnoreCnt, fTopItemCnt' that allow
    better tracking of references in view of automatic destruction.
  - Consolidate Has/Num|Children/Parents() methods.

- TEveGeoNode:
  Use TEveElement::HasChildren() instead of checking container size.


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  Add possibility to plot E/Et values and enable absolute/relative
  scaling.

- TEveUtil:
  Add utility functions to check if a phi interval lies within or
  overlaps with another interval taking into account the U(1)
  wrap-around.


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destructor and check it in TGLViewer destructor.


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- TEveCalo, TEveCaloLegoGL, TEveCalo2DGL, TEveCaloVizEditor:
  Add possibility to auto scale calorimeters.
  In class TEveCaloViz rename member fPhiRng to fPhiOffset.

- cms_calo.C:
  Demonstrate auto scale and eta/phi range.


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  Add static data-member holding a pointer to a default geo-manager
  that allows us to capture dangling geo-shapes as they are created for
  or imported into TEveGeoShape.

- TGLCamera
  Fix AdjustAndClampVal() fix poorly implementd logarithmic scaling of
  the value step.

- TGLOrthoCamera
  Add get/set methods for fZoomMin/Max.

- TGLViewer, TGLSAViewer
  Move SavePicture() from TGLSAViewer to TGLViewer and improve
  structure of the code. This allows also images from TGLEmbedded
  viewer to be saved to a file.

- projection_test.C
  Set min/max-zoom of the camera.


git-svn-id: http://root.cern.ch/svn/root/trunk@24059 27541ba8-7e3a-0410-8455-c3a389f83636

- TEveCaloVizEditor:
  Read eta limits from data.

- TEveCaloData, TEveCalo, TEveCalo3DGL, TEveCaloLegoGL, TEveCalo2DGL:
  Enable variable eta and phi range.

- TEveLegoOverlay:
  Draw axis using THLimits finder.


git-svn-id: http://root.cern.ch/svn/root/trunk@24052 27541ba8-7e3a-0410-8455-c3a389f83636

  Add member 'TEveElement *fVizModel' that points to VizDB entry used
  for determination of element's visual properties.
  When setting the VizModel add it as a child to the model-element.
  This will allow for two-way communication between client and model
  elements.

- TEveManager
  When adding a model-element into VizDB increase its deny-destroy
  count. Use Destroy() not direct delete when removing it.

- TEvePolygonSetProjected
  - Override TEveElement::SetMainColor() so that we can keep line and
    fill colors in sync if this is desired.
  - Remove SetLine/FillColor(Pixel_t).

- TEveGeoNode
  Add some info and warning messages for unexpected conditions (which
  I now suspect might actually happen in some rare cases).


git-svn-id: http://root.cern.ch/svn/root/trunk@24047 27541ba8-7e3a-0410-8455-c3a389f83636

----------

Implement basic visual-parameter database management using TMap
(load/save not supported yet).

Use TMap instead of std::map for geometry management.

TEveElement
-----------

Implement CopyVizParamsFromDB().

test_compound.C
---------------

Add minimal example showing usage of visual-parameter database.


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some efffc++ fixes


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following classes: TEvePointSet, TEveLine, TEveTrack, TEveTrackList
and TEveStraightLineSet.

Implemented TEveProjectable::PropagateVizParams().

In TEveGedEditor::Update() call PropagateVizParamsToProjecteds() so
that all representation of given element receive the potential
updates.


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and preprocessing the changed elements in TEveManager::DoRedraw3D().

Make TEveElement::AddStamp() virtual. This allows sub-classes to react
to different changes within the element.
This also simplifes handling of visibility for TEveGeoNode and
TEveSceneInfo.

TEveProjection manager properly maintains compound-element relation.

Finalize propagation of visibility and color from compounds to
compound elements and from projectables to projecteds.

Add three new selection propagation modes (compound, compound and
projectable, master).

Remove obsolete method TEveElement::UpdateItems() and all its
incarnations.

Replace asserts in TEveTrackPropagator::HelixToBounds() with a warning
as this case can actually occur due to numerical errors for tracks with
pZ close to zero.


git-svn-id: http://root.cern.ch/svn/root/trunk@24001 27541ba8-7e3a-0410-8455-c3a389f83636

a) compounds to compound-members;
b) projectables to projected elements.

New tutorial to test/demonstrate compounds (not complete).


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TEveCalo2DGL, EveCalo3DGL - fix quad normals.

TEveCalo, TEveCaloLegoGL - use THLimitFider for XY axis. 

TEveCaloData - simplify CellData_t handling.


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From Alja: TEveCaloLegoGL - Set z-coordinate of 2D cells to the same
value as in 3d case to allow for thresholding with a transparent plane.


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to Color_t is not needed.


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TEveCalo,TEveCaloLegoEditor:
Add interface for horizontal plane color and transparency.

TEveCaloLegoGL:
Structural improvements.


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TGLFontManager:
Add utility function GetFontSize().

TEveCaloData:
Fix wrong usage of THStack.

TEveCalo, TEveCaloLegoEditor:
Remove obsolete memeber.

TEveLegoOverlay, LinkDef:
New class.

TEveCaloLegoGL:
Draw a semi-transparent plane parallel to the grid and have an
interactive marker on the scale which a user can drag to cause the
plane to move.

cms_calo.C:
Add overlay to the GL scene.


git-svn-id: http://root.cern.ch/svn/root/trunk@23868 27541ba8-7e3a-0410-8455-c3a389f83636

- Add class TEveVector4.

- Add new type of path-mark - a 2D-cluster.


2. TEveTrack, TEveTrackPropagator

- Properly handle 2D-cluster path-marks.

- Use TEveVector4 for propagation instead of inner struct Vertex4D_t
(now removed).


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Rename the name of the canvas used in the example macro from c1 to cV3D
to avoid a clash between two concurrent canvases with the same name.


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