# 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