<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>Le 11 juil. 2014 à 08:19, Paragon Corporation a écrit :</div><div><br></div><div><br></div><div>Regina,</div><div><br></div><div><blockquote type="cite">Do we have a function for setting that bit or is it simply computed it if<br>determines the surface is closed?</blockquote></div><div><br></div><div>For now there's not way to set/get this bit from userland,</div><div>ant it's current internal usage is dedicated to SFCGAL stuff.</div><div><br></div><div>But you're right we could imagine accessors to this SOLID bit,</div><div><br></div><div><br></div><div><blockquote type="cite">I can see cases where people would have a closed surfce but would not want<br>it treated as a volume. (similar to closed linestring / polygon)</blockquote><br></div><div><br></div><div>Could you give us examples about this ?</div><div><br></div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Version 1.2.1 I see they do indeed have Polyhedron WKT on LXI (p. 61)</div></blockquote><blockquote type="cite"><div><br><br>Polyhedron Z<br>(<br>((0 0 0, 0 0 1, 0 1 1, 0 1 0, 0 0 0)),<br>((0 0 0, 0 1 0, 1 1 0, 1 0 0, 0 0 0)),<br>((0 0 0, 1 0 0, 1 0 1, 0 0 1, 0 0 0)),<br>((1 1 0, 1 1 1, 1 0 1, 1 0 0, 1 1 0)),<br>((0 1 0, 0 1 1, 1 1 1, 1 1 0, 0 1 0)),<br>((0 0 1, 1 0 1, 1 1 1, 0 1 1. 0 0 1))<br>)<br><br><br><br>Though oddly on p (63)<br><br>Where they give the Integer codes for geometric types, the PolyHedron seen<br>earlier seems to be mysteriously not present.<br></div></blockquote><div><br></div><div>Yeah looks definitely like a typo, (Polyhedron instead of PolyhedralSurface in p61)</div><div><div>as the related BNF in LIX refer to PolyhedralSurface,</div><div>and PolyhedrelSurface is also use for the integer codes in LXIII and LXIV.</div></div><br><blockquote type="cite"><div>Which makes me wonder if the earlier WKT was a mistake or the rest of the<br>doc was not updted to reflect this new type.</div></blockquote><br><blockquote type="cite"><div>I ask because Leo was asking why we don't have a Polyhedron type.<br></div></blockquote><div><br></div><div>We have somehow, it's a closed PolyhedralSurface</div></div><div><br></div><br><div>
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