# Generate texture coordinates on a "random" sphere.

# get the interactor ui
source vtkInt.tcl

# create some random points in a sphere
#
vtkPointSource sphere;
  sphere SetNumberOfPoints 25;

# triangulate the points
#
vtkDelaunay3D del
  del SetInput [sphere GetOutput];
  del SetTolerance 0.01;
  del DebugOn;
    
# texture map the sphere (using cylindrical coordinate system)
#
vtkTextureMapToCylinder tmapper;
  tmapper SetInput [del GetOutput];
  tmapper PreventSeamOn;

vtkTransformTextureCoords xform;
  xform SetInput [tmapper GetOutput];
  xform SetScale 4 4 1;

vtkDataSetMapper mapper;
  mapper SetInput [xform GetOutput];

# load in the texture map and assign to actor
#
vtkPNMReader pnmReader;
  pnmReader SetFilename "../../data/masonry.ppm";
vtkTexture atext;
  atext SetInput [pnmReader GetOutput];
  atext InterpolateOn;
vtkActor triangulation;
  triangulation SetMapper mapper;
  triangulation SetTexture atext;

# Create rendering stuff
vtkRenderMaster rm;
set renWin [rm MakeRenderWindow];
set ren1   [$renWin MakeRenderer];
set iren   [$renWin MakeRenderWindowInteractor];

# Add the actors to the renderer, set the background and size
#
$ren1 AddActors triangulation;
$ren1 SetBackground 1 1 1;
$renWin SetSize 500 500;
$renWin Render;

# render the image
#
$iren SetUserMethod {wm deiconify .vtkInteract};
$renWin Render;

# prevent the tk window from showing up then start the event loop
wm withdraw .



