[pstricks] Calculations & parametricplotThreeD - Change in Behavior

[Hensh, Richard]

Dear All,

Has there been a change in the behavior of pst-3dplot? Specifically, it appears that one can use calculated values on the t-coordinate interval but not the u interval.

The code below (minimal example) illustrates the problem. 

%%%%%%%%%%%%%%%
\documentclass[10pt]{article}%
\usepackage{pst-3dplot}%

\begin{document}

%%Works just fine.  
\parametricplotThreeD[linecolor=blue](0,3.1415 2 div){%
    t %
    t %
    0}%
    
%%Doesn't compile.
\parametricplotThreeD[linecolor=blue](0,1.57)(0,3.1415 2 div){%
    t %
    t %
    0}%

\end{document}
%%%%%%%%%%%%%

FWIW, the example above used to work.

regards
rick