Render with Opticks

[ggalgoczi]

In order to visualize with GPU we have the G4CXOpticks::render(). Need to explore this.

[ggalgoczi]

It seems there is an example:
G4CXRenderTest.cc

I tried to do the same calls:

SEventConfig::SetRGModeRender(); // before geom definition
gx->render();

And define the environment variables:

eye=-0.4,0,0
moi=-1
export EYE=${EYE:-$eye} 
export MOI=${MOI:-$moi}
export UP=0,0,1
export LOOK=0,0,0.5

Got segfault:
SEvt::beginPhoton FATAL not in_range idx 99

[ggalgoczi]

Let's create a separate executable just for rendering IMO as done in G4CXRenderTest.cc.

[ggalgoczi]

First successful rendering of the pfRICH drum:

[ggalgoczi]

Comparison of G4 GUI and Opticks rendering for esi-g4ox/geom/pfrich_min.gdml

$EYE = 0.00002,-0.00004,-0.11
$LOOK = 0,0,0.5

[ggalgoczi]

@plexoos I remember you played with the path of simulated rays. Do you happen to have an idea how to include them in these renders?

[plexoos]

My approach was outside Opticks, but there is a way to create an animation from a simulated event. You can see these instructions how to accomplish that: https://groups.io/g/opticks/message/526