<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">While what you say may be true for some 3d pictures (although "hidden lines" can make even such a picture easier to understand visually),<div>my need for this has to do with labels: I have a surface, I mark a specific point on it, and I want to label that point. Since the label needs</div><div>to visually connect to the point, I have two choices: either I put the label near the point, in which case it may be unreadable if the surface</div><div>covers the field of view (in my case, it is a hyperboloid of one sheet) unless I block it out, or I need to place the label away from the point and</div><div>connect the label to the point with a line (or perhaps an arrow).</div><div>The easiest way to construct the latter kind of connection is a \pstThreeDLine joining the coordinates of the \pstThreeDPut command placing</div><div>the label to the coordinates of the point itself. However, in this case the line starts in the middle of the label, and obscures part of it. If the label</div><div>were in a box of the kind created by \rput* in 2d, then the line would emerge from behind that box, and would look just right.<br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; "><br class="Apple-interchange-newline">Zbigniew Nitecki</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Department of Mathematics</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Tufts University</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Medford, MA 02155</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><br></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">telephones:</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Office<span class="Apple-converted-space"><span class="Apple-converted-tab"> <span class="Apple-converted-space"> </span></span></span>(617)627-3843</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Dept.<span class="Apple-converted-space"><span class="Apple-converted-tab"> <span class="Apple-converted-space"> </span></span></span>(617)627-3234</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Dept. fax<span class="Apple-converted-space"><span class="Apple-converted-tab"> <span class="Apple-converted-space"> </span></span></span>(617)627-3966</font></p><a href="http://www.tufts.edu/~znitecki/">http://www.tufts.edu/~znitecki/</a></span>
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<br><div><div>On Jul 13, 2010, at 16:31, Hernando Diaz Morales wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
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El 13/07/2010 14:32, Zbigniew Nitecki escribió:
<blockquote cite="mid:613BFC7B-FD91-4587-A0D0-E3D7AEFDEDEE@tufts.edu" type="cite">1. Is there a "starred" version of \pstThreeDPut, similar
in effect to \rput* (that is, it overwrites anything crossing the box
being "put")?
<div>I know from trying that if so, it isn't \pstThreeDPut*; tried
that and got weird error messages.</div>
<div>Lacking that, is there another way to get this effect?</div>
<div><br>
</div>
<div>2. Is there a way to attach an arrow to the end of a
\pstThreeDLine? (again, putting arrows=-> seems to cause trouble).<br>
<div><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font style="font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-stretch: normal; -x-system-font: none;" face="Helvetica" size="3"></font><br>
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</blockquote>
Hello:<br>
Come to think about it: Does it really make sense to overwrite
something in a 3D graph? What for?<br>
I may be wrong, but it seems to me that overwritting only makes sense
in a 2D graph. <br>
In 3D, you should be able to see what is being crossed out from the
opposite direction.<br>
I'd like to see your comments.<br>
<br>
Hernando Diaz<br>
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<span><hdiazmo.vcf></span>_______________________________________________<br>PSTricks mailing list<br><a href="mailto:PSTricks@tug.org">PSTricks@tug.org</a><br>http://tug.org/mailman/listinfo/pstricks<br>archive: http://www.tug.org/pipermail/pstricks/</blockquote></div><br></div></body></html>