class TGeoPainter: public TVirtualGeoPainter

-*-*Geometry painter default constructor
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-*-*Geometry painter default destructor
*-*                  ===================================

--- Add numpoints, numsegs, numpolys to the global 3D size.

 Create a primary TGeoTrack.

 Average center of view of all painted tracklets and compute view box.

 get the new 'bombed' translation vector according current exploded view mode

 Geometry checking method (see TGeoChecker).

Check overlaps for the top volume of the geometry, within a limit OVLP.

 check current point in the geometry

Clear the list of visible volumes
reset the kVisOnScreen bit for volumes previously in the list

 Define 100 colors with increasing light intensities for each basic color (1-7)
 Register these colors at indexes starting with 1000.

 Get index of a base color with given light intensity (0,1)

 Get currently drawn volume.

compute the closest distance of approach from point px,py to a volume

 Set default angles for the current view.

 Set default volume colors according to tracking media

 Count number of visible nodes down to a given level.

 Count total number of visible nodes.

 Check if Ged library is loaded and load geometry editor classe.

 Start the geometry editor.

 Draw method.

 Draw the time evolution of a radionuclide.

 Draw method.

 Draw a shape.

 Draw an overlap.

 Draw only one volume.

 Draw current point in the same view.

 Draw all volumes for a given path.

 Estimate camera movement between tmin and tmax for best track display

 Execute mouse actions on a given volume.

 Execute mouse actions on a given shape.

 Execute mouse actions on a given volume.

 Get some info about the current selected volume.

 Create/return geometry checker.

 Get the current view angles.

 Move focus to current volume

 Generate a lego plot fot the top volume, according to option.

 Convert a local vector according view rotation matrix

 Check if a pad and view are present and send signal "Modified" to pad.

 Paint current geometry according to option.

 Paint an overlap.

 Paint recursively a node and its content accordind to visualization options.

 Paint recursively a node and its content accordind to visualization options.

 Paint the supplied shape into the current 3D viewer

 Paint an overlap.

 Paints a physical node associated with a path.

 Print overlaps (see TGeoChecker::PrintOverlaps())

 Draw random points in the bounding box of a volume.

 Shoot nrays in the current drawn geometry

 Raytrace current drawn geometry

 shoot npoints randomly in a box of 1E-5 arround current point.
 return minimum distance to points outside

--- Set cartesian and radial bomb factors for translations

 set type of exploding view

 Set number of segments to approximate circles

 Set default level down to which visualization is performed

 Set top geometry volume as visible.

 set drawing mode :
 option=0 (default) all nodes drawn down to vislevel
 option=1           leaves and nodes at vislevel drawn
 option=2           path is drawn

  Returns distance between point px,py on the pad an a shape.

 Check time of finding "Where am I" for n points.

--- Geometry overlap checker based on sampling. 

 Check voxels efficiency per volume.

 get the new 'unbombed' translation vector according current exploded view mode

 Compute weight [kg] of the current volume.