<html><body><div>1. That is the main condition for good 3D model. Therion is based on theory of oriented graphs and to ignore this fact is direct way to hell.<br></div><div><br></div><div>2. The problem is not in MeshLab, the wire model was from ParaView and anybody may see that there are several very strange objects inside the model.<br></div><div><br></div><div>There is very easy way to solve it - check and correct all 65 km of your drawing. Not any joke.<br></div><div><br></div><div>BTW, my model has fixed point too.<br></div><div><br></div><div>m.s.<br></div><div><br>On Oct 22, 2015, at 03:09 PM, Pavel Herich <herich@speleodd.sk> wrote:<br><br><div><blockquote type="cite"><div class="msg-quote"><div class="_stretch"><span class="body-text-content">Well, finally i get the (part of) conclusion, why it doesn´t work <br>properly:<br>1. there is no importance of line:wall orientation in th2 as Martin <br>suggested<br>2. but it is because i have used FIXED POSITIONED 3d model. It has the <br>result in destroyed 3d in Meshlab and prevents proper computation of <br>volume and surface. CS IJTSK and UTM33 as well i have tried with no <br>succes (even there can be seen small difference). Since there is need to <br>compute all my data which consist 65 km of cave passages and thousands <br>fixed stations, I do not see any solution on the horizont, but there <br>should be something to solve it..?.<br>Palo<br><br>Dňa 2015-10-22 11:58 Martin Sluka napísal(a):<br><blockquote class="quoted-plain-text" type="cite">The same cave but after new explorations:</blockquote><blockquote class="quoted-plain-text" type="cite"><br></blockquote><blockquote class="quoted-plain-text" type="cite">Loch:</blockquote><blockquote class="quoted-plain-text" type="cite"><br></blockquote><blockquote class="quoted-plain-text" type="cite">ParaView</blockquote><blockquote class="quoted-plain-text" type="cite"><br></blockquote><blockquote class="quoted-plain-text" type="cite">MeshLab</blockquote><blockquote class="quoted-plain-text" type="cite"><br></blockquote><blockquote class="quoted-plain-text" type="cite">Mesh Bounding Box Size 68.374199 153.150894 62.903999</blockquote><blockquote class="quoted-plain-text" type="cite">Mesh Bounding Box Diag 179.128845</blockquote><blockquote class="quoted-plain-text" type="cite">Mesh Volume is 43708.933594</blockquote><blockquote class="quoted-plain-text" type="cite">Mesh Surface is 21756.070312</blockquote><blockquote class="quoted-plain-text" type="cite">Thin shell barycenter -14.023410 -37.206078 -14.819854</blockquote><blockquote class="quoted-plain-text" type="cite">Center of Mass is -15.087652 -42.666534 -16.276274</blockquote><blockquote class="quoted-plain-text" type="cite">Inertia Tensor is :</blockquote><blockquote class="quoted-plain-text" type="cite">| 20330152.000000 -3620606.750000 -1168910.625000 |</blockquote><blockquote class="quoted-plain-text" type="cite">| -3620606.750000 6608607.000000 -4662930.000000 |</blockquote><blockquote class="quoted-plain-text" type="cite">| -1168910.625000 -4662930.000000 21506810.000000 |</blockquote><blockquote class="quoted-plain-text" type="cite">Principal axes are :</blockquote><blockquote class="quoted-plain-text" type="cite">| 0.231695 0.934567 0.270003 |</blockquote><blockquote class="quoted-plain-text" type="cite">| 0.970067 -0.242716 0.007686 |</blockquote><blockquote class="quoted-plain-text" type="cite">| -0.072717 -0.260140 0.962829 |</blockquote><blockquote class="quoted-plain-text" type="cite">axis momenta are :</blockquote><blockquote class="quoted-plain-text" type="cite">| 4363844.500000 21226780.000000 22854932.000000 |</blockquote></span></div></div></blockquote></div></div></body></html>