From c238eab6e20f732facdef32909f368b9436fb964 Mon Sep 17 00:00:00 2001
From: MaxThevenet <mthevenet@lbl.gov>
Date: Thu, 16 May 2019 17:46:58 -0700
Subject: Photons are derived class from PhysicalParticleContainer

---
 Source/Particles/PhotonParticleContainer.cpp | 87 ++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 Source/Particles/PhotonParticleContainer.cpp

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

diff --git a/Source/Particles/PhotonParticleContainer.cpp b/Source/Particles/PhotonParticleContainer.cpp
new file mode 100644
index 000000000..14af6c0d9
--- /dev/null
+++ b/Source/Particles/PhotonParticleContainer.cpp
@@ -0,0 +1,87 @@
+#include <limits>
+#include <sstream>
+#include <algorithm>
+
+#ifdef _OPENMP
+#include <omp.h>
+#endif
+
+#include <PhotonParticleContainer.H>
+#include <WarpX_f.H>
+#include <WarpX.H>
+#include <WarpXConst.H>
+
+using namespace amrex;
+
+PhotonParticleContainer::PhotonParticleContainer (AmrCore* amr_core, int ispecies,
+                                                  const std::string& name)
+    : PhysicalParticleContainer(amr_core, ispecies, name)
+{
+
+    // This will read <species>.[...] from the inputs file
+    // where <species> is the name of your species
+    ParmParse pp(species_name);
+
+    // read <species>.size_in_inches in the input file, and 
+    // store it into member data.
+    pp.query("size_in_inches", size_in_inches);
+
+}
+
+void PhotonParticleContainer::InitData()
+{
+    AddParticles(0); // Note - add on level 0
+    if (maxLevel() > 0) {
+        Redistribute();  // We then redistribute
+    }
+}
+
+void
+PhotonParticleContainer::PushPX(WarpXParIter& pti,
+                                Cuda::ManagedDeviceVector<Real>& xp,
+                                Cuda::ManagedDeviceVector<Real>& yp,
+                                Cuda::ManagedDeviceVector<Real>& zp,
+                                Cuda::ManagedDeviceVector<Real>& giv,
+                                Real dt)
+{
+    // This wraps the call to warpx_particle_pusher so that inheritors can modify the call.
+    auto& attribs = pti.GetAttribs();
+    auto& uxp = attribs[PIdx::ux];
+    auto& uyp = attribs[PIdx::uy];
+    auto& uzp = attribs[PIdx::uz];
+    auto& Exp = attribs[PIdx::Ex];
+    auto& Eyp = attribs[PIdx::Ey];
+    auto& Ezp = attribs[PIdx::Ez];
+    auto& Bxp = attribs[PIdx::Bx];
+    auto& Byp = attribs[PIdx::By];
+    auto& Bzp = attribs[PIdx::Bz];
+    const long np  = pti.numParticles();
+    
+    // Probably want to push photons in some way here.
+    // WarpXParticleContainer::PushX(int lev, Real dt) is probably
+    // a good start.
+    // In particular grep ParallelFor thing if you want 
+    // to write GPU-compatible code.
+}
+
+void
+PhotonParticleContainer::Evolve (int lev,
+                                        const MultiFab& Ex, const MultiFab& Ey, const MultiFab& Ez,
+                                        const MultiFab& Bx, const MultiFab& By, const MultiFab& Bz,
+                                        MultiFab& jx, MultiFab& jy, MultiFab& jz,
+                                        MultiFab* cjx, MultiFab* cjy, MultiFab* cjz,
+                                        MultiFab* rho, MultiFab* crho,
+                                        const MultiFab* cEx, const MultiFab* cEy, const MultiFab* cEz,
+                                        const MultiFab* cBx, const MultiFab* cBy, const MultiFab* cBz,
+                                        Real t, Real dt)
+{
+    PhysicalParticleContainer::Evolve (lev,
+                                       Ex, Ey, Ez,
+                                       Bx, By, Bz,
+                                       jx, jy, jz,
+                                       cjx, cjy, cjz,
+                                       rho, crho,
+                                       cEx, cEy, cEz,
+                                       cBx, cBy, cBz,
+                                       t, dt);
+}
-- 
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