Changes between Version 74 and Version 75 of VisIt

Timestamp:

07/20/11 14:45:38 (14 years ago)

Author:

Jonathan

Comment:

—

VisIt

@@ -271 +271 @@
 
 
+[[CollapsibleStart(More complicated movie tracking a particle)]]
+I first had to use some linux-fu to get the particle's xy location that I wanted to track into xloc.dat.  I then used {{{d=f.readline}}} to read each line and {{{c=d.split}}} to parse the line.  I then used {{{c[3]}}} and {{{c[5]}}} as the x and y position of the particle which I then used to set the window coords etc...  Here is the [sinkzoom.gif movie]
+{{{
+movie_name="sinkzoom"
+framestart_mesh=130
+framestart_zoom=160
+frameend_zoom=190
+frameadd_v=220
+frameend=300
+zoom_factor=12
+zf=zoom_factor**(1.0/(frameend_zoom-framestart_zoom))
+print zf
+f=open('xloc.dat')
+SaveWindowAtts = SaveWindowAttributes()
+SaveWindowAtts.fileName = movie_name
+SaveWindowAtts.family = 0
+for i in range(0,framestart_mesh):
+  f.readline()
+  SetTimeSliderState(i)
+  SaveWindowAtts.fileName = movie_name + "%(frame)04d" % {'frame':i}
+  SetSaveWindowAttributes(SaveWindowAtts)
+  SaveWindow()
+  ClearCache("localhost")
+a=GetView2D()
+b=GetView2D()
+AddPlot("Mesh","Mesh")
+DrawPlots()
+for i in range(framestart_mesh, framestart_zoom):
+  f.readline()
+  SetTimeSliderState(i)
+  SaveWindowAtts.fileName = movie_name + "%(frame)04d" % {'frame':i}
+  SetSaveWindowAttributes(SaveWindowAtts)
+  SaveWindow()
+  ClearCache("localhost")
+for i in range(framestart_zoom, frameend_zoom):
+  d=f.readline()
+  c=d.split()
+  x=float(c[3])
+  y=float(c[5])
+  print x,y
+  viewsizex=(b.windowCoords[1]-b.windowCoords[0])/(zf**(i-framestart_zoom+1))
+  viewsizey=(b.windowCoords[3]-b.windowCoords[2])/(zf**(i-framestart_zoom+1))
+  xlower = max(b.windowCoords[0], x-viewsizex/2)
+  ylower = max(b.windowCoords[2], y-viewsizey/2)
+  xupper = min(b.windowCoords[1], xlower+viewsizex)
+  yupper=min(b.windowCoords[3], ylower+viewsizey)
+  xlower=xupper-viewsizex
+  ylower=yupper-viewsizey
+  a.windowCoords=(xlower,xupper,ylower,yupper)
+  SetView2D(a)
+  SetTimeSliderState(i)
+  SaveWindowAtts.fileName = movie_name + "%(frame)04d" % {'frame':i}
+  SetSaveWindowAttributes(SaveWindowAtts)
+  SaveWindow()
+  ClearCache("localhost")
+SetActivePlots(2)
+HideActivePlots()
+for i in range (frameend_zoom,frameadd_v):
+  d=f.readline()
+  c=d.split()
+  x=float(c[3])
+  y=float(c[5])
+  print x,y
+  viewsizex=(b.windowCoords[1]-b.windowCoords[0])/zoom_factor
+  viewsizey=(b.windowCoords[3]-b.windowCoords[2])/zoom_factor
+  xlower = max(b.windowCoords[0], x-viewsizex/2)
+  ylower = max(b.windowCoords[2], y-viewsizey/2)
+  xupper = min(b.windowCoords[1], xlower+viewsizex)
+  yupper=min(b.windowCoords[3], ylower+viewsizey)
+  xlower=xupper-viewsizex
+  ylower=yupper-viewsizey
+  a.windowCoords=(xlower,xupper,ylower,yupper)
+  SetView2D(a)
+  SetTimeSliderState(i)
+  SaveWindowAtts.fileName = movie_name + "%(frame)04d" % {'frame':i}
+  SetSaveWindowAttributes(SaveWindowAtts)
+  SaveWindow()
+  ClearCache("localhost")
+AddPlot("Vector","v")
+DrawPlots()
+for i in range (frameadd_v,frameend):
+  d=f.readline()
+  c=d.split()
+  x=float(c[3])
+  y=float(c[5])
+  print x,y
+  viewsizex=(b.windowCoords[1]-b.windowCoords[0])/zoom_factor
+  viewsizey=(b.windowCoords[3]-b.windowCoords[2])/zoom_factor
+  xlower = max(b.windowCoords[0], x-viewsizex/2)
+  ylower = max(b.windowCoords[2], y-viewsizey/2)
+  xupper = min(b.windowCoords[1], xlower+viewsizex)
+  yupper=min(b.windowCoords[3], ylower+viewsizey)
+  xlower=xupper-viewsizex
+  ylower=yupper-viewsizey
+  a.windowCoords=(xlower,xupper,ylower,yupper)
+  SetView2D(a)
+  SetTimeSliderState(i)
+  SaveWindowAtts.fileName = movie_name + "%(frame)04d" % {'frame':i}
+  SetSaveWindowAttributes(SaveWindowAtts)
+  SaveWindow()
+  ClearCache("localhost")
+f.close()
+
+
+}}}
+[[CollapsibleEnd]]
 
 = Derived Expressions =