A karst cave model is constructed from the point cloud data

Signed-off-by: 刘明宏 <liuminghong@mail.sdu.edu.cn>

3DIrregularBodyTest/cave_test.m

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+%A karst cave model is constructed from the point cloud data
+
+%Extract the contour of point cloud data
+ptCloud2Curve;
+
+%3D model initialization
+Comsol_with_Matlab_Start;
+import com.comsol.model.util.*
+model = ModelUtil.create('Model1');% ModelUtil.remove('Model');
+model.modelNode.create('mod1');
+model.geom.create('geom1', 3);
+model.mesh.create('mesh1', 'geom1');
+data_dir = pwd ;
+
+%Constructed Irregular 3D volumes from 2D contour curves
+model = lofting(model,data_dir);
+mphsave(model,'cave');