[Octaviz-cvsupdate] octaviz/Scripts vtk_axis.m,1.7,1.8

[Jonathan S. <jjs...@us...>]

Update of /cvsroot/octaviz/octaviz/Scripts
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv11512

Modified Files:
	vtk_axis.m 
Log Message:
progress on axis function

Index: vtk_axis.m
===================================================================
RCS file: /cvsroot/octaviz/octaviz/Scripts/vtk_axis.m,v
retrieving revision 1.7
retrieving revision 1.8
diff -u -d -r1.7 -r1.8
--- vtk_axis.m	29 Apr 2005 16:45:58 -0000	1.7
+++ vtk_axis.m	8 May 2005 00:47:32 -0000	1.8
@@ -75,25 +75,19 @@
 	f.renderer.GetProps.GetLastProp.SetScale(1/span(1),1/span(2),1/span(3))
       endif
 
-    else
-      disp("manual setting of axis bounds not implemented yet")
-#       ## attempt at clipping (only one Actor for now)
-#       plane = vtkPlane();
-#       plane.SetOrigin(0, 0, 0);  # trial case for now, will recode to use input values
-#       plane.SetNormal(1, 0, 0);
-#       clippoly = vtkClipPolyData;
-#       clippoly.SetClipFunction(plane);
-#       clippoly.GenerateClipScalarsOn();
-#       clippoly.GenerateClippedOutputOn();
-#       ##clippoly.SetValue(0.5); ??
-#       clippoly.SetInput(f.renderer.GetActors.GetLastActor.GetMapper.GetInput);
-#       ##f.renderer.GetActors.GetLastActor.GetMapper.SetInput(clippoly.GetOutput);  # this doesn't work because you can't recover original!
-#       clipmapper = vtkPolyDataMapper;
-#       clipmapper.SetInput(clippoly.GetOutput);
-#       clipactor = vtkActor;
-#       clipactor.SetMapper(clipmapper);
-#       f.renderer.GetActors.GetLastActor.VisibilityOff;  # turn unclipped actor off
-#       f.renderer.AddActor(clipactor);
+    else  ## clip everything to desired axes limits
+      ##disp("manual setting of axis bounds not implemented yet")
+      ## attempt at clipping (only one Actor for now)
+      limits = arg;
+      clippd = clipaxes(f.renderer.GetActors.GetLastActor.GetMapper.GetInput,limits);
+      ## this doesn't work because you can't recover original!
+      ##f.renderer.GetActors.GetLastActor.GetMapper.SetInput(clippoly.GetOutput);
+      clipmapper = vtkPolyDataMapper;
+      clipmapper.SetInput(clippd);
+      clipactor = vtkActor;
+      clipactor.SetMapper(clipmapper);
+      f.renderer.GetActors.GetLastActor.VisibilityOff;  # turn unclipped actor off
+      f.renderer.AddActor(clipactor);
     endif
   endfor
   
@@ -102,6 +96,54 @@
 endfunction
 
 
+function clippd = clipaxes(polydata,limits)
+  plane = vtkPlane();
+  clippoly = vtkClipPolyData;
+  clippoly.SetClipFunction(plane);
+  clippd = vtkPolyData;
+  ##clippoly.GenerateClipScalarsOff();
+  clippoly.GenerateClippedOutputOn();
+
+  ## clip xlow
+  plane.SetOrigin(limits(1), 0, 0);
+  plane.SetNormal(1, 0, 0);
+  clippoly.SetInput(polydata);
+  clippoly.Update;
+  clippd.DeepCopy(clippoly.GetOutput);
+  ## clip xhigh
+  plane.SetOrigin(limits(2), 0, 0);
+  plane.SetNormal(-1, 0, 0);
+  clippoly.SetInput(clippd)
+  clippoly.Update;
+  clippd.DeepCopy(clippoly.GetOutput);
+  ## clip ylow
+  plane.SetOrigin(0, limits(3), 0);
+  plane.SetNormal(0, 1, 0);
+  clippoly.SetInput(clippd)
+  clippoly.Update;
+  clippd.DeepCopy(clippoly.GetOutput);
+  ## clip yhigh
+  plane.SetOrigin(0, limits(4), 0);
+  plane.SetNormal(0, -1, 0);
+  clippoly.SetInput(clippd)
+  clippoly.Update;
+  clippd.DeepCopy(clippoly.GetOutput);
+  ## clip zlow
+  plane.SetOrigin(0, 0, limits(5));
+  plane.SetNormal(0, 0, 1);
+  clippoly.SetInput(clippd)
+  clippoly.Update;
+  clippd.DeepCopy(clippoly.GetOutput);
+  ## clip zhigh
+  plane.SetOrigin(0, 0, limits(6));
+  plane.SetNormal(0, 0, -1);
+  clippoly.SetInput(clippd)
+  clippoly.Update;
+  clippd.DeepCopy(clippoly.GetOutput);
+endfunction
+
+
+##   notes:
 ## to set arbitrary ranges on the axes
 ##f.axes.UseRangesOn
 ##f.axes.SetRanges(xl,xh,yl,yh,zl,zh)
@@ -111,3 +153,5 @@
 
 ## to get at the polydata input of the last actor; hopefully I can then clip it
 #f.renderer.GetActors.GetLastActor.GetMapper.GetInput
+
+## can add more inputs (i.e. from other actors) to vtkClipPolyData with AddInput command?
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