Problem 402

Summary:	Invalid enum in G4Sphere::DistanceToOut
Product:	Geant4	Reporter:	shtol
Component:	geometry/solids	Assignee:	Vladimir.Grichine
Status:	RESOLVED WORKSFORME
Severity:	normal
Priority:	P2
Version:	4.1
Hardware:	PC
OS:	Linux

Description shtol 2002-08-22 07:19:36 CEST

When running a simulation I get a line: Invalid enum in G4Sphere::DistanceToOut
  and then the program crashed. This is the end of log-file:
 21      472     51.7      5.6      1.16    0.168    0.575       137
supp1           msc
   22      472       52     5.94      0.99    0.172    0.575       138
supp1           msc

Sphere parameters:

fRmin = 475 mm
fRmax = 480 mm
fSPhi = 0 degree
fDPhi = 360 degree
fSTheta = 17.8 degree
fDTheta = 144.4 degree

Position:

p.x() = 471.7356120367253 mm
p.y() = 51.95081450791341 mm
p.z() = 5.938043020529463 mm

Direction:

v.x() = -0.519985502840818
v.y() = 0.2521089719986221
v.z() = 0.8161226274728446

Proposed distance :

snxt = 9e+99 mm

Invalid enum in G4Sphere::DistanceToOut

*** G4Exception: Aborting execution ***

Comment 1 Vladimir.Grichine 2002-08-23 04:10:59 CEST

The problem is not in G4Sphere. The point is located outside, therefore the call
of DistanceToOut is not valid, and the function can not find the proper
intersection with surrounding surfaces, showing this exception.

Comment 2 Vladimir.Grichine 2002-08-26 04:55:59 CEST

I would add the following:
1. Check your geometry, especially in terms of contacting sphere surfaces.
2. Don't forget that the thickness of theta/phi G4Sphere surfaces has varing
   value in terms of cartesian dimensions.
3. Try to avoid direct coincidence of theta/phi surfaces in G4Sphere volume
   tree.
If you can provide us with a simplified application showing this behaviour,
it would be extremely useful for us to understand the source of the problem.