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<p class="MsoNormal"><span lang="EN-GB">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Sorry to bother everybody again.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I’m a beginner and I seem to run in on one error after another. I’m using GMSH 4.7.0 (I came across GMSH trough the onelab website) on Windows 10.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">See the script below (from a bigger 3D project where I try to narrow down the errors I get).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I get a good 3D mesh but at the curve where the two objects meet, the mesh is not aligned.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Using the coherence command I get a large list of errors of the type:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Error : could not find extruded vertex (0.08443279255020152, -0.053826794978966, 0).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Yet, if I change the point y-coordinates to a positive number:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> Point(23) = {0, 0.1, 0};<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-GB">Point(24) = {0, 0.05, 0};<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-GB">Point(25) = {0, 0.05, WanD};<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-GB">Point(26) = {0, 0.1, WanD};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">All works as expected.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Thanks for the help.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Bart<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">-----------------------<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">KanR = DefineNumber[ 0.1, Name "Parameters/KanR" ];<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">WanD = DefineNumber[ 0.2, Name "Parameters/WanD" ];<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">KanMeshsize = DefineNumber[ 0.01, Name "Parameters/KanMeshsize" ];<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">SetFactory("OpenCASCADE");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Rectangle(1) = {-2.5, -2.5, 0, 5, 5, 0};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Circle(5) = {0, 0, 0, KanR, 0, 2*Pi};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Curve Loop(2) = {5};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Plane Surface(2) = {2};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">BooleanDifference{ Surface{1}; Delete; }{ Surface{2}; Delete; }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Extrude {0, 0, WanD } {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> Surface{1}; <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">}<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Point(23) = {0, -0.1, 0};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Point(24) = {0, -0.05, 0};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Point(25) = {0, -0.05, WanD};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Point(26) = {0, -0.1, WanD};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Line(32) = {23, 24};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Line(33) = {24, 25};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Line(34) = {25, 26};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Line(35) = {26, 23};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Curve Loop(30) = {34, 35, 32, 33};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Plane Surface(14) = {30};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Extrude {{0, 0, 1}, {0, 0, 0}, Pi} {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> Surface{14}; Layers{25}; <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">}<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Field[1] = Distance;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Field[1].EdgesList = {5};<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Field[1].NNodesByEdge = 50;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Field[2] = Threshold;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Field[2].DistMax = 2.5;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Field[2].DistMin = 0;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Field[2].IField = 1;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Field[2].LcMax = 0.25;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Field[2].LcMin = KanMeshsize ;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Background Field = 2;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Mesh.CharacteristicLengthExtendFromBoundary = 0;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Mesh.CharacteristicLengthFromPoints = 0;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Mesh.CharacteristicLengthFromCurvature = 0;<o:p></o:p></span></p>
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