ENH: surfaceFeatureExtract: extract features

tutorials/mesh/cvMesh/flange/system/surfaceFeatureExtractDict

+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      surfaceFeatureExtractDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+flange.obj
+{
+    extractionMethod    extractFromSurface;
+
+    extractFromSurface
+    {
+        // Mark edges whose adjacent surface normals are at an angle less
+        // than includedAngle as features
+        // - 0  : selects no edges
+        // - 180: selects all edges
+        includedAngle   155;
+    }
+
+    // Write options
+    writeVTK                no;
+    writeObj                yes;
+    writeFeatureEdgeMesh    no;
+}
+
+
+// ************************************************************************* //