<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Equivalent to Draw Point, yes. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> dotnet-bounces@lists.osgeo.org [mailto:dotnet-bounces@lists.osgeo.org] <b>On Behalf Of </b>Carsten Troelsgaard<br><b>Sent:</b> Tuesday, May 31, 2011 11:24 AM<br><b>To:</b> dotnet@lists.osgeo.org<br><b>Subject:</b> RE: [DotNet-OSGeo] RE: 3D display<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>I had to google TIN-algorithm to get a gist of what you talk about. It looks like the triangulation I've tried to figure out. I'm not getting passed the convex hull. I've writte a pile of code that hasn't been tested .. it's doomed. <br>I assume that you are working on the clouds that you collect with the lidar? <br> <br>The point 'painting' .. is that the Device.DrawPoints (or something eqvivalent, Draw.Point is not supported in Xna)<br> <br> <br>> One other thing-<br>> <br>> > <a href="http://cid-382e99b169b58267.photos.live.com/self.aspx/Billeder/ng%5E_2.jpg">http://cid-382e99b169b58267.photos.live.com/self.aspx/Billeder/ng%5E_2.jpg</a><br>> <br>> From this image, it looks like you are using gridded data, which makes the<br>> display issue a little simpler. I usually deal with point clouds, which are<br>> not gridded, so either I display just a set (cloud) of points, or I have to<br>> run a TINning algorithm to make a surface to display.<br>> <br>> One of the issues I like to complain/whine about a lot is the lack of a<br>> really good, standalone-portable, quality-scalable TIN construction library.<br>> Having something like that is a part of my dream 3D geo engine library...<br>> <br>> -mpg<br>> <br>> <br>> <o:p></o:p></span></p></div></div></body></html>