# A generic rotation routine for the gnuplot view.  In the commands

# that load this file, the following should be defined:

#

# iteration_count:  set iteration_count=0

#

# limit_iterations:  if set to a nonzero value, it'll stop after that

#     many iterations; if zero value, continues indefinitely

#

# xrot:  the initial x rotation of the view

#

# xrot_delta:  the amount to increment the x rotation for each new plot

#

# xview:  function for generating x view value; for example

#     xview(xrot)=(50.+30.*sin((xrot%180)/180.*pi))

#

# zrot:  the initial z rotation of the view

#

# zrot_delta:  the amount to increment the z rotation for each new plot

#

# zview:  function for generating z view value; for example

#     zview(zrot)=(60.+45.*sin(zrot/180.*pi))

#

# History:

#   - 1. 1. 2006 Dan Sebald:  Made more generic so other demos could use

#   - ?. ?. ?    Hans-Bernhard Broeker:  Used to just turn round and round

#                by somewhat large steps. Now, it tumbles back and forth

#                smoothly.

#   - ?. ?. ?    ?:  Initial recursive script

iteration_count=iteration_count+1

if ((!limit_iterations) || (iteration_count<=limit_iterations)) \

  set view xview(xrot),zview(zrot); \

  replot; \

  zrot=(zrot+zrot_delta)%360; \

  xrot=(xrot+xrot_delta)%360; \

  reread