"Thorsten Froehlich" wrote:
>It is by design for _this_ beta and part of the changes to the 
>output that have been in progress for several weeks now until a 
>final solution can be found.  The previous beta versions' output 
>was incorrect, the current change only disables the incorrect 
>output without providing the correct output yet.

If you want to change the output of 'evaluate' more helpful, 
please add "maximum gradient variation" between neighboring rays. 
[grad_var = abs(max_grad(Nth ray)-max_grad((N-1)th ray) ) ]

Then, the parameters of 'evaluate' for dynamic max_gradient estimation 
should be as follows,
  1st parameter < max_grad
  1 <  2nd parameter < max_grad/(max_grad - max_grad_var) 
  1 > 3rd parameter > 1/(2nd parameter) 

R. Suzuki

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