From 71b57a2e5617fa81e52171906abaaba9b42723cb Mon Sep 17 00:00:00 2001
From: MaxThevenet <mthevenet@lbl.gov>
Date: Mon, 8 Jul 2019 08:27:44 -0700
Subject: add comments

---
 Source/Particles/WarpXParticleContainer.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'Source/Particles/WarpXParticleContainer.cpp')

diff --git a/Source/Particles/WarpXParticleContainer.cpp b/Source/Particles/WarpXParticleContainer.cpp
index a02c9cfcd..20d4049a2 100644
--- a/Source/Particles/WarpXParticleContainer.cpp
+++ b/Source/Particles/WarpXParticleContainer.cpp
@@ -316,7 +316,9 @@ WarpXParticleContainer::DepositCurrent(WarpXParIter& pti,
     BL_PROFILE_VAR_NS("PICSAR::CurrentDeposition", blp_pxr_cd);
     BL_PROFILE_VAR_NS("PPC::Evolve::Accumulate", blp_accumulate);
 
-    // Get tile box where current is deposited
+    // Get tile box where current is deposited.
+    // The tile box is different when depositing in the buffers (depos_lev<lev)
+    // or when depositing inside the level (depos_lev=lev)
     Box tilebox;
     if (lev == depos_lev) {
         tilebox = pti.tilebox();
@@ -391,6 +393,7 @@ WarpXParticleContainer::DepositCurrent(WarpXParIter& pti,
         &lvect,&WarpX::current_deposition_algo);
 
 #ifdef WARPX_RZ
+    // Rescale current in r-z mode
     warpx_current_deposition_rz_volume_scaling(
         jx_ptr, &ngJ, jxntot.getVect(),
         jy_ptr, &ngJ, jyntot.getVect(),
-- 
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