> On 12 Feb 2018, at 20:16, Sathyanarayan Rao <sathyanarayan....@uclouvain.be> > wrote: > > Dear Gmsh team, > > I am following the same syntax as > https://gitlab.onelab.info/gmsh/gmsh/blob/master/demos/boolean/boolean.geo > <https://gitlab.onelab.info/gmsh/gmsh/blob/master/demos/boolean/boolean.geo> > > for generating boolean unioun of surfaces. But however it gives me error as > in the subject line. Can you please > help me to correctly combine surfaces 1:3 into one surface by a boolean > unioun ? >
You can only use the declarative syntax BooleanUnion(7) = { Surface {1}; Delete; }{ Surface {2:3}; Delete; }; If the operation results in the creation of a single shape. If not, use BooleanUnion { Surface {1}; Delete; }{ Surface {2:3}; Delete; } or out() = BooleanUnion { Surface {1}; Delete; }{ Surface {2:3}; Delete; }; If you need the result. > SetFactory("OpenCASCADE"); > > // mesh size description > > cl_1 = 5; > cl_2 = 0.01; > > Geometry.NumSubEdges = 100; // nicer display of curve > > var1 = 0.02; > var2 = 0.1; > > > // Define Segment coordinates > > X1 > ={0,0.000811,0.001097,0.001233,0.00129,0.001325,0.001335,0.001343,0.001346,0.001347,0.001348,0.001348,0.001349,0.001349,0.001349,0.001349,0.001349,0.001349,0.001349,0.0013487}; > Y1 > ={0,-2.4,-4,-5.6,-7.2,-8.8,-10.4,-12,-13.6,-15.2,-16.8,-18.4,-20,-21.6,-23.2,-24.8,-26.4,-28,-28.96,-29.118}; > > Point(newp) = {X1[1], Y1[1], 0, cl_2}; > > // Line 1 > Extrude {var1, var1, 0} { > Point{newp-1}; > } > > // Line 2 > Extrude {var2, var2, 0} { > Point{newp-1}; > } > > // Line 3 > Extrude {var1, var1, 0} { > Point{newp-1}; > } > > > // Define 1 segment > > l0 = newl; > l = l0; > nR = #X1[]; > p0 = newp; > p = p0; > For i In {0:nR-1} > Point(newp) = {X1[i], Y1[i], 0, cl_2}; > EndFor > p2 = newp-1; > Spline(l0) = {p:p2}; > > Wire(l0) = {l0}; > Extrude { Line{l0-3}; } Using Wire {l0} //left > Extrude { Line{l0-2}; } Using Wire {l0} // center > Extrude { Line{l0-1}; } Using Wire {l0} // right > > BooleanUnion(7) = { Surface {1}; Delete; }{ Surface {2:3}; Delete; }; > > > > > > Best Regards, > > Sathyanarayan Rao, PhD student > Earth and Life Institute/Environmental Sciences (ELI-e) > Université catholique de Louvain > c.037, Croix du Sud 2, Louvain-la-Neuve, Belgium > Phone: 010473827 ( intercom 73827) > _______________________________________________ > gmsh mailing list > gmsh@onelab.info <mailto:gmsh@onelab.info> > http://onelab.info/mailman/listinfo/gmsh > <http://onelab.info/mailman/listinfo/gmsh> — Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine Free software: http://gmsh.info | http://getdp.info | http://onelab.info
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