From c1504d4d71afcd0764bfbb51578ebed556f36aec Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@gmail.com>
Date: Tue, 21 Feb 2017 08:54:27 +0000
Subject: [PATCH] Added analysis options and analysis decorator

---
 trisurf/VTKRendering.py |   67 ++++++++++++++++++++++++---------
 1 files changed, 48 insertions(+), 19 deletions(-)

diff --git a/trisurf/VTKRendering.py b/trisurf/VTKRendering.py
index 76ff9e7..9080a9a 100644
--- a/trisurf/VTKRendering.py
+++ b/trisurf/VTKRendering.py
@@ -1,9 +1,10 @@
 import os,sys
 from . import trisurf
-if sys.version_info<(3,0):
+try:
 	from vtk import *
-
-
+except:
+	print("Vtk rendering works if you manually install vtk7 for python3")
+	exit(1)
 
 class MultiRender:
 	def __init__(self,args,host):
@@ -51,7 +52,7 @@
 		output = reader.GetOutput()
 		scalar_range = output.GetScalarRange()
 		mapper = vtkDataSetMapper()
-		mapper.SetInput(output)
+		mapper.SetInputData(output)
 		mapper.SetScalarRange(scalar_range)
 
 		# Create the Actor
@@ -79,39 +80,44 @@
 
 
 class Renderer:
-	def __init__(self,args,host):
+	def __init__(self,args,host,run, timestep=-1, scalar_field='vertices_idx'):
 		self.host=host
 		self.args=args
+		self.run=run
+		self.timestep=timestep
+		self.scalar_field=scalar_field
 		self.renderer = vtkRenderer()
 		self.actor=self.lastActor()
 		self.textactor=self.textActor()
 		self.renderer.AddActor(self.actor)
 		self.renderer.AddActor(self.textactor)
-		self.renderer.SetBackground(0, 0, 0) # Set background to white
+		self.renderer.SetBackground(81/255, 87/255, 110/255) # Set background to nicely grey
 		# Create the RendererWindow
 		self.renderer_window = vtkRenderWindow()
 		self.renderer_window.AddRenderer(self.renderer)
-		self.renderer_window.SetSize(1200,600)
+		self.renderer_window.SetSize(800,800)
 	
-		self.renderer.SetViewport(0.0,0.0,0.5,1.0)
-		rend=vtk.vtkRenderer()
-		rend.AddActor(self.actor)
-		rend.SetViewport(0.5,0.0,1.0,1.0)
-		self.renderer_window.AddRenderer(rend)	
+#		self.renderer.SetViewport(0.0,0.0,0.5,1.0)
+#		rend=vtk.vtkRenderer()
+#		rend.AddActor(self.actor)
+#		rend.SetViewport(0.5,0.0,1.0,1.0)
+#		self.renderer_window.AddRenderer(rend)	
 # Set up a check for aborting rendering.
 		# Create the RendererWindowInteractor and display the vtk_file
 		interactor = vtkRenderWindowInteractor()
 		interactor.SetRenderWindow(self.renderer_window)
 		interactor.Initialize()
- 		interactor.AddObserver("TimerEvent", self.RenderUpdate)
-		timerIDR = interactor.CreateRepeatingTimer(1000)
+		interactor.AddObserver("TimerEvent", self.RenderUpdate)
+		timerIDR = interactor.CreateRepeatingTimer(10000)
 		interactor.Start()
-
 		return
 
 	def lastVTU(self):
-		Dir=trisurf.Directory(maindir=self.host['runs'][0].maindir,simdir=self.host['runs'][0].subdir)
-		filename=os.path.join("./",Dir.fullpath(),self.host['runs'][0].getLastVTU())
+		#Dir=trisurf.Directory(maindir=self.host['runs'][self.run].maindir,simdir=self.host['runs'][self.run].subdir)
+		Dir=self.run.Dir
+		#print(self.run.getLastVTU())
+		filename=os.path.join("./",Dir.fullpath(),self.run.getLastVTU())
+		#filename=os.path.join("./",Dir.fullpath(),self.host['runs'][self.run].getLastVTU())
 		return filename
 
 	def textActor(self):
@@ -124,16 +130,39 @@
 		return textactor
 
 	def lastActor(self):
-		self.filename=self.lastVTU()
+		if(self.timestep<0):
+			self.filename=self.lastVTU()
+		else:
+			self.filename=os.path.join("./",self.run.Dir.fullpath(),'timestep_{:06d}.vtu'.format(self.timestep))
 		reader=vtkXMLUnstructuredGridReader()
 		reader.SetFileName(self.filename)
 		reader.Update() # Needed because of GetScalarRange
 		output = reader.GetOutput()
+		output.GetPointData().SetActiveScalars(self.scalar_field)
 		scalar_range = output.GetScalarRange()
 		mapper = vtkDataSetMapper()
-		mapper.SetInput(output)
+		mapper.SetInputData(output)
 		mapper.SetScalarRange(scalar_range)
+		
+		#color lookuptables
+		#lut = vtk.vtkLookupTable()
+		#lut.SetHueRange(0.5, 0.6)
+		#lut.SetSaturationRange(0, 1)
+		#lut.SetValueRange(0, 1)
+		#mapper.SetLookupTable(lut)
 
+		#advanced lookuptables...
+		lut = vtk.vtkLookupTable()
+		lutNum = 256
+		lut.SetNumberOfTableValues(lutNum)
+		ctf = vtk.vtkColorTransferFunction()
+		ctf.SetColorSpaceToDiverging()
+		ctf.AddRGBPoint(0.0, 0.230, 0.299, 0.754)
+		ctf.AddRGBPoint(1.0, 0.706, 0.016, 0.150)
+		for ii,ss in enumerate([float(xx)/float(lutNum) for xx in range(lutNum)]):
+			cc = ctf.GetColor(ss)
+			lut.SetTableValue(ii,cc[0],cc[1],cc[2],1.0)
+		mapper.SetLookupTable(lut)
 		# Create the Actor
 		actor = vtkActor()
 		actor.SetMapper(mapper)

--
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