[pstricks] Need help with pst-3d

[Alan Ristow]

Never mind, Herbert -- I think I just answered my own questions. Thanks
again for your help!

alan


> -----Original Message-----
> From: pstricks-bounces at tug.org [mailto:pstricks-bounces at tug.org]On
> Behalf Of Alan Ristow
> Sent: Thursday, February 06, 2003 5:09 PM
> To: pstricks at tug.org
> Subject: RE: [pstricks] Need help with pst-3d
>
>
> Wow! That was quick -- thanks! That is very much like what I'm
> after, though
> I have to admit that I'm still having a hard time understanding *why* it
> works. There are also a couple of other things I'd like to do but have no
> idea how to handle. (Comments below, I've left the code completely intact
> for clarity.)
>
> > \documentclass[10pt]{article}
> > \usepackage{pst-3d}
> >
> > \newcommand{\orthovectors}{%
> > \begin{pspicture}(1in,1in)
> >     \psset{linewidth=2pt,linecolor=red}%
> > 	\ThreeDput[normal=0 0 1](0,0,0){%
> >      		\psline{->}(0,0)(1,0)
> >      		\uput[90](1,0){$x$}
> > 	}
>
> I don't think I fully understand the syntax of \ThreeDput. What is the
> function of the (0,0,0) after the bracketed part of the command?
>
> > 	\ThreeDput[normal=1 0 0](0,0,0){%
> >      		\psline{->}(0,0)(1,0)
> >      		\uput[90](1,0){$y$}
> >      		\psline{->}(0,0)(0,1)
> >      		\uput[180](0,1){$z$}
> > 	}
> > \end{pspicture}
> > }
> > \begin{document}
> > \begin{pspicture}[-0.2](-2in,-1in)(2in,2in)
> > 	\psset{viewpoint=1 1 1}%
> > 	\ThreeDput[normal=1.5 2.5 0](0,0,0){%
> > 		\orthovectors%
> > 	}
>
> Here I'm still trying to convince myself that the origin of
> \orthovectors is
> at (1.5,2.5,0). It doesn't really look right, but I might be able
> to figure
> it out myself if I knew what the  values in round parentheses
> mean. How did
> you determine that [normal=1.5 2.5 0](0,0,0) would put the origin of
> \orthovectors at (1.5,2.5,0)?
>
> > 	% Draw coordinate axes
> > 	\ThreeDput[normal=0 0 1](0,0,0){%
> >      		\psline{->}(0,0)(3,0)
> >      		\uput[90](3,0){$x$}
> > 	}
> > 	\ThreeDput[normal=1 0 0](0,0,0){%
> >      		\psline{->}(0,0)(3,0)
> >      		\uput[90](3,0){$y$}
> >      		\psline{->}(0,0)(0,3)
> >      		\uput[180](0,3){$z$}
> > 	}
> > 	% Draw orthogonal vectors
> > %--------------------------------------------------
> > 	\ThreeDput[normal=1.5 2.5 0](0,0,0){%
> > 		\orthovectors%
> > 	}
> > 	\ThreeDput[normal=1.5 2.5 0](0,0,2){%
> > 		\orthovectors%
> > 	}
>
> Let me guess: This offsets \orthovectors two units in the z direction?
>
> > %--------------------------------------------------
> > 	\ThreeDput[normal=0 0 1]{%
> >          \psline[linewidth=1.5pt]{->}(1.5,2.5)(1,2.1)%
> >          \psline[linewidth=1.5pt]{->}(1.5,2.5)(1.9,2)%
> > 	}%
> > 	\ThreeDput[normal=0 1 0]{%
> >          \psline[linewidth=1.5pt]{->}(1.5,2.5)(0,1)%
> > 	}%
> >      \end{pspicture}
> > \end{document}
>
> One more thing: If I wish to rotate \orthovectors, is there a PSTricks
> command that will do it or do I need to add arguements via the usual
> \newcommand route?
>
> Thanks so much for your help!
>
> alan
>
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