Test the two-box geometry. More...

#include <GeoTests.hh>

Public Member Functions
	TwoBoxesGeoTest (GenericGeoTestInterface *geo_test)
	Construct with a reference to the GoogleTest.

void	test_accessors () const
	Test geometry accessors.

void	test_detailed_tracking () const

void	test_reentrant () const
	Cross into a new volume and then reflect into the old.

void	test_reentrant_undo () const
	Emulate an edge case with field propagation plus MSC.

void	test_substep_retry () const
	Emulate the geometry calls of the field propagator's substep loop.

void	test_substep_retry_backscatter () const
	Approach a boundary like the field propagator, then scatter back inside.

void	test_tangent () const
	Instead of crossing into a new volume, reflect without exiting.

void	test_trace () const

Static Public Member Functions
static std::string_view	gdml_basename ()

Detailed Description

Test the two-box geometry.

Inner box inner enclosed in an outer box world . The box's half-width is 5 cm.

Member Function Documentation

◆ test_reentrant()

void celeritas::test::TwoBoxesGeoTest::test_reentrant ( ) const

Cross into a new volume and then reflect into the old.

This is how optical physics is performed: we enter the new volume to determine its characteristics, then apply the optical surface crossing, which might reflect back into the original.

◆ test_reentrant_undo()

void celeritas::test::TwoBoxesGeoTest::test_reentrant_undo ( ) const

Emulate an edge case with field propagation plus MSC.

Propagation moves to the boundary
Field momentum update points the direction back inside
MSC update points the direction back out

◆ test_substep_retry()

void celeritas::test::TwoBoxesGeoTest::test_substep_retry ( ) const

Emulate the geometry calls of the field propagator's substep loop.

The field propagator intersects the straight chord of each curved substep, searching a little past its end, and only moves to a boundary that is close to the end of the substep. Otherwise it discards the intersection, changes direction along the chord of a shorter substep, and searches again. It moves internally to the end of an accepted substep, including when the boundary lies just past the end of the step.

After crossing, a track whose chords curve back toward the surface it is on finds it at (nearly) zero distance, which is also discarded; if no substep can move, the track is bumped along its final direction.

◆ test_substep_retry_backscatter()

void celeritas::test::TwoBoxesGeoTest::test_substep_retry_backscatter ( ) const

Approach a boundary like the field propagator, then scatter back inside.

This is the same approach as test_substep_retry , but the final direction after moving to the boundary points back into the original volume, so crossing should not change volumes.

◆ test_tangent()

void celeritas::test::TwoBoxesGeoTest::test_tangent ( ) const

Instead of crossing into a new volume, reflect without exiting.

This simulates a looping track almost tangent to a geometry boundary. The end-of-step direction is changed to account for the momentum vector's end-of-step state, and the boundary isn't actually exited when we call cross boundary.

The documentation for this class was generated from the following files:

Public Member Functions