From 9447bd5e078944df080b75e054cd4dc95c6c9303 Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@fe.uni-lj.si>
Date: Wed, 22 Jun 2016 13:06:50 +0000
Subject: [PATCH] Merge with paraview's branch. Added triangles as cells for visualization

---
 python/trisurf/trisurf.py |   52 ++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 50 insertions(+), 2 deletions(-)

diff --git a/python/trisurf/trisurf.py b/python/trisurf/trisurf.py
index 8b36d27..ddcb7f9 100644
--- a/python/trisurf/trisurf.py
+++ b/python/trisurf/trisurf.py
@@ -212,8 +212,40 @@
 			lines=0
 			f.close()
 		return lines
-		
+
+	def tail(self,filename,n=2):
+		with open(filename,'r') as myfile:
+			lines=myfile.readlines()
+		return [lines[len(lines)-2].replace('\n',''),lines[len(lines)-1].replace('\n','')]
+
 	def read(self):
+		try:
+			lines=self.tail(self.fullname)
+		except:
+			return(False)
+		if len(lines)<2:
+			return(False)
+		#print (line)
+		fields=shlex.split(lines[0])
+		epoch1=fields[0]
+		n1=fields[1]
+		
+		fields=shlex.split(lines[1])
+		epoch2=fields[0]
+		n2=fields[1]
+		try:
+			self.dT=int(epoch2)-int(epoch1)
+			self.last=n2
+			#print(epoch1)
+			#print(epoch2)
+			#print(self.dT)
+			#print(self.last)
+			self.startDate=os.path.getmtime(os.path.join(self.path,'.lock'))
+		except:
+			return(False)
+		return(True)
+
+	def read_old(self):
 		'''
 		Method read() reads the statistics if it exists. It sets local variable dT storing the time differential between two intervals of simulation (outer loops). It also stores last simulation loop and the start of the run.
 		'''
@@ -382,10 +414,18 @@
 				return
 
 			cwd=Directory(maindir=os.getcwd())
+			lastVTU=self.getLastVTU() #we get last VTU file in case we need to continue the simulation from last snapshot. Need to be done before the Dir.goto() call.
 			self.Dir.goto()
 			print("Starting trisurf-ng executable in "+self.Dir.fullpath())
 			if(self.fromSnapshot==True):
-				params=["trisurf", "--restore-from-vtk","initial_snapshot.vtu"]+self.runArgs
+				#here we try to determine whether we should continue the simulation or start from last known VTU snapshot.
+				if(lastVTU==None):
+					initSnap="initial_snapshot.vtu"
+				else:
+					initSnap=lastVTU
+					print("WARNING: Not using initial snapshot as starting point, but selecting "+initSnap+" as a starting vesicle")
+				params=["trisurf", "--restore-from-vtk",initSnap]+self.runArgs
+				print("InitSnap is: "+initSnap)
 			else:
 				#veify if dump exists. If not it is a first run and shoud be run with --force-from-tape
 				if(os.path.isfile("dump.bin")==False):
@@ -451,6 +491,14 @@
 		self.Comment=FileContent(os.path.join(self.Dir.fullpath(),".comment"))
 		self.Comment.writefile(data,mode=mode)
 
+
+	def getLastVTU(self):
+		vtuidx=self.getLastIteration()
+		if vtuidx<0:
+			return None
+		else:
+			return  'timestep_{:06d}.vtu'.format(vtuidx)
+
 	def __str__(self):
 		if(self.getStatus()==0):
 			str=" not running."

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