From 87763d80d0ea2cabd0f33923dba88c9eb1642f58 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Thu, 12 Apr 2018 14:26:12 +0200
Subject: Initial commit.

---
 revive.py | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100755 revive.py

diff --git a/revive.py b/revive.py
new file mode 100755
index 0000000..dbc3658
--- /dev/null
+++ b/revive.py
@@ -0,0 +1,81 @@
+#!/usr/bin/python
+
+import argparse
+import sys
+
+import numpy as np
+from scipy import interpolate
+
+from cactus_utils import simdata
+
+metric_str = {
+    'gxx' : '11', 'gyy' : '22', 'gzz' : '33',
+    'gxy' : '12', 'gxz' : '13', 'gyz' : '23',
+}
+curv_str = {
+    'kxx' : '11', 'kyy' : '22', 'kzz' : '33',
+    'kxy' : '12', 'kxz' : '13', 'kyz' : '23',
+}
+shift_str = {
+    'betax' : 'beta1', 'betay' : 'beta2', 'betaz' : 'beta3',
+}
+
+parser = argparse.ArgumentParser(description = 'Revive cactus simulation data')
+
+parser.add_argument('simdata_path')
+parser.add_argument('load_time', type = float)
+parser.add_argument('load_iteration', type = int)
+parser.add_argument('varname')
+parser.add_argument('x0', type = float)
+parser.add_argument('z0', type = float)
+parser.add_argument('dx', type = float)
+parser.add_argument('dz', type = float)
+parser.add_argument('gridsize_x', type = int)
+parser.add_argument('gridsize_z', type = int)
+
+args = parser.parse_args(sys.argv[1:])
+
+sd = simdata.SimulationData(args.simdata_path)
+
+if args.load_iteration < 0:
+    s = sd.rl[-1].slice(time = args.load_time)
+    load_iteration = s.it
+else:
+    load_iteration = args.load_iteration
+
+varname = args.varname
+if '::' in varname:
+    varname = varname.split('::', 1)[1]
+
+load_rl = None
+for rl in sd.rl[::-1]:
+    s = rl.slice(load_iteration)
+    if (s.x[0] <= args.x0 and s.z[0] <= args.z0 and
+        s.x[-1] >= (args.x0 + args.dx * (args.gridsize_x - 1)) and
+        s.z[-1] >= (args.z0 + args.dz * (args.gridsize_z - 1))):
+        load_rl = rl
+        break
+
+if load_rl is None:
+    sys.stderr.write('No refinement level contains all the data required\n')
+    sys.exit(1)
+
+s = load_rl.slice(load_iteration)
+if varname in metric_str:
+    src = s['gt' + metric_str[varname]][:] / (s['phi'][:] ** 2)
+elif varname in curv_str:
+    src = (s['At' + curv_str[varname]][:] + (1.0 / 3.0) * s['gt' + curv_str[varname]][:] * s['trK'][:]) / (s['phi'][:] ** 2)
+elif varname in shift_str:
+    src = s[shift_str[varname]][:]
+elif varname == 'alp':
+    src = s['alpha'][:]
+
+src = src.squeeze()
+
+src_interp = interpolate.RectBivariateSpline(s.z, s.x, src)
+
+x = np.linspace(args.x0, args.x0 + args.dx * (args.gridsize_x - 1), args.gridsize_x)
+z = np.linspace(args.z0, args.z0 + args.dz * (args.gridsize_z - 1), args.gridsize_z)
+
+res = src_interp(z, x)
+res.tofile(sys.stdout)
-- 
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