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 #!/bin/bash -l
 usage(){ cat << EOU
 cxr_geochain.sh : 3D renders using CSGOptiXRenderTest
 ==========================================================
 
 Rendering CSGFoundry geometry created from
 Geant4 C++ solid specification by GeoChain 
 executable. 
 
 Usage:
 
 1. create a CSGFoundry geometry folder by conversion from a Geant4 geometry using GeoChain::
 
     cd ~/opticks/GeoChain   # gc 
     ./translate.sh                # create geometry CF folder
 
 2. alternatively some geometry is only implemnented at CSG level, create CSGFoundry with::
 
     cd ~/opticks/CSG   # c 
     ./CSGMakerTest.sh 
 
 3. run the render, this works with OptiX 7 (needs manual b7 build) and also by virtue of CSGOptiX/Six.cc with OptiX 5 or 6:: 
  
     cd ~/opticks/CSGOptiX    # cx
 
     ./cxr_geochain.sh                 # render jpg 
     EYE=0,0,1,1 ./cxr_geochain.sh     # change viewpoint 
 
 The EYE, LOOK, UP envvars set the okc/View::home defaults 
 
 DONE: avoid outdir having -1 elem in the path, as thats tedious to handle from shell 
 DONE: add PUB=1 sensitivity to copy renders into standardized publication dirs based on the outdir 
       with the front of the path replaced 
 
 Taking a look inside, hunting speckle::
 
     EYE=0,-0.7,0. UP=0,0,1 TMIN=0. CAM=0  ./cxr_geochain.sh 
 
 
 Debugging unexpected renders
 ------------------------------
 
 1. force recompile the kernels by touching .cu 
 
    * have observed that changes to CSG headers do not automatically 
      trigger rebuilds of the .cu kernels : so touch the .cu to 
      make sure get the latest CSG headers
 
 
 Debugging blank renders
 ------------------------
 
 Arrange a viewpoint from the inside of a shape such that every pixel should intersect. 
 Thence can trace whats happening with any pixel. 
 
 ::
 
      EYE=0.1,0.1,0.1 ./cxr_geochain.sh 
           shoot from inside so every pixel should intersect 
           add debug to trace whats happening 
 
 
 EYE=1,1,1 GEOM=DifferenceBoxSphere TMIN=0.5 ./cxr_geochain.sh 
 
 
 EOU
 }
 
 msg="=== $BASH_SOURCE :"
 
 #geom=default
 #geom=AdditionAcrylicConstruction
 
 #geom=pmt_solid
 #geom=1_3
 
 #geom=UnionOfHemiEllipsoids        # looks fine, like full ellipsoid
 #geom=UnionOfHemiEllipsoids-50    # lower hemi-ellipsoid is smaller than upper : looks like the translation transform stomps on the scale transform
 
 #geom=body_solid
 #geom=inner_solid
 #geom=inner1_solid
 #geom=inner2_solid
 
 #geom=body_phys
 #geom=inner1_phys
 #geom=inner2_phys
 
 #geom=SphereWithPhiSegment
 #geom=Orb
 #geom=PolyconeWithMultipleRmin
 
 #geom=hmsk_solidMask
 #geom=hmsk_solidMaskTail
 
 #geom=nmsk_solidMask
 #geom=nmsk_solidMaskTail
 
 #geom=XJfixtureConstruction
 #geom=AltXJfixtureConstruction
 #geom=XJanchorConstruction
 #geom=AnnulusBoxUnion
 #geom=AnnulusTwoBoxUnion
 #geom=AnnulusFourBoxUnion
 #geom=AnnulusOtherTwoBoxUnion
 
 #geom=BoxFourBoxUnion
 #geom=BoxFourBoxContiguous
 
 #geom=SphereWithPhiCutDEV
 #geom=GeneralSphereDEV
 #geom=OverlapBoxSphere
 #geom=ContiguousBoxSphere
 #geom=DiscontiguousBoxSphere
 
 #geom=ContiguousThreeSphere
 #geom=OverlapThreeSphere
 #geom=parade
 # export GEOM=${GEOM:-$geom}
 
 source $PWD/../bin/GEOM.sh trim   ## sets GEOM envvar 
 
 # cfname picks the CSGFoundry geometry to load
 if [ "$(uname)" == "Linux" ]; then
     cfname=GeoChain/$GEOM            
 else
     cfname=GeoChain_Darwin/$GEOM            
 fi
 
 
 moi=ALL
 zoom=1
 
 if [ "$GEOM" == "default" ]; then  
    eye=-1,0,1,1 
    tmin=0.5
    icam=0         
 elif [ "$GEOM" == "XJfixtureConstruction" ]; then  
    eye=1,1,1
    tmin=0.1 
    icam=1
    zoom=2
 else
    eye=-2,0,0,1        
    tmin=1
    icam=1     # 0:perspective  1:ortho        
 fi 
 
 emm=t0    # default to no solid skips with GeoChain, which is typically single solid geometry 
 
 stamp=$(date +"%Y-%m-%d %H:%M")
 version=$(CSGOptiXVersion 2>/dev/null)
 export MOI=${1:-$moi}
 export CFNAME=${CFNAME:-$cfname}
 export EMM=${EMM:-$emm}
 export TMIN=${TMIN:-$tmin}
 export EYE=${EYE:-$eye}
 export ICAM=${ICAM:-$icam}    # 0:perspective 1:ortho  
 export ZOOM=${ZOOM:-$zoom}
 
 
 export Camera=INFO
 
 export NAMEPREFIX=cxr_geochain_${GEOM}_   # MOI is appended by tests/CSGOptiXRender.cc when --solid_label yields no solids
 export RELDIR=cxr_geochain/cam_${ICAM}
 export TOPLINE="./cxr_geochain.sh $MOI      # EYE $EYE  $stamp  $version $GEOM   " 
 
 vars="GEOM MOI CFNAME EMM TMIN EYE ICAM NAMEPREFIX RELDIR TOPLINE"
 echo $msg 
 for var in $vars ; do printf "%-20s : %s \n" $var "${!var}" ; done  
 
 echo $msg invoke ./cxr.sh 
 ./cxr.sh 
 
 exit 0
 

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