[IgaApplication] Second PR Gap-Sbm: nurbs modeler and snake process

applications/IgaApplication/custom_modelers/nurbs_geometry_modeler_gap_sbm.h

@@ -0,0 +1,140 @@
+//    |  /           |
+//    ' /   __| _` | __|  _ \   __|
+//    . \  |   (   | |   (   |\__ `
+//   _|\_\_|  \__,_|\__|\___/ ____/
+//                   Multi-Physics
+//
+//  License:         BSD License
+//                   Kratos default license: kratos/license.txt
+//
+//  Main authors:    Nicolo' Antonelli
+//                   Andrea Gorgi
+//
+
+# pragma once
+
+// System includes
+
+// External includes
+
+// Project includes
+#include "nurbs_geometry_modeler.h"
+
+namespace Kratos {
+
+class KRATOS_API(IGA_APPLICATION) NurbsGeometryModelerGapSbm
+    : public NurbsGeometryModeler
+{
+public:
+    ///@name Type Definitions
+    ///@{
+    KRATOS_CLASS_POINTER_DEFINITION( NurbsGeometryModelerGapSbm );
+
+    using IndexType = NurbsGeometryModeler::IndexType;
+    using NodeType = NurbsGeometryModeler::NodeType;
+
+    using GeometryType = NurbsGeometryModeler::GeometryType;
+    using GeometryPointerType = NurbsGeometryModeler::GeometryPointerType;
+
+    ///@}
+    ///@name Life Cycle
+    ///@{
+
+    /// Default constructor.
+    NurbsGeometryModelerGapSbm()
+        : NurbsGeometryModeler() {}
+
+    /// Constructor.
+    NurbsGeometryModelerGapSbm(
+        Model & rModel,
+        const Parameters ModelerParameters = Parameters())
+        : NurbsGeometryModeler(rModel, ModelerParameters)
+    {
+        mParameters.ValidateDefaults(this->GetValidParameters());
+        mParameters.AddMissingParameters(this->GetDefaultParameters());
+
+        KRATOS_ERROR_IF_NOT(mParameters.Has("gap_element_name"))
+            << "NurbsGeometryModelerGapSbm: Missing \"gap_element_name\" section." << std::endl;
+
+        KRATOS_ERROR_IF_NOT(mParameters["gap_interface_condition_name"].IsString())
+            << "NurbsGeometryModelerGapSbm: Missing \"gap_interface_condition_name\" section." << std::endl;
+
+    }
+
+    /// Destructor.
+    ~NurbsGeometryModelerGapSbm() = default;
+
+    /// Creates the Modeler Pointer
+    Modeler::Pointer Create(
+        Model& rModel, 
+        const Parameters ModelParameters) const override
+    {
+        return Kratos::make_shared<NurbsGeometryModelerGapSbm>(rModel, ModelParameters);
+    }
+
+    // Get the default parameters
+    const Parameters GetDefaultParameters() const override;
+    const Parameters GetValidParameters() const;
+
+    ///@}
+    ///@name Stages
+    ///@{
+
+    ///@}
+
+protected:
+
+    /**
+     * @brief Creates a regular grid composed out of bivariant B-splines.
+     * @param PointA Lower point of bounding box.
+     * @param PointB Upper point of bounding box.
+     * @param Order  Polynomial degree in each direction u,v.
+     * @param NumKnotSpans Number of equidistant elements/knot spans in each direction u,v.
+     * @note The CP'S are defined as nodes and added to the rModelPart.
+     **/
+    void CreateAndAddRegularGrid2D(
+        ModelPart& rModelPart, 
+        const Point& rPointAXyz, 
+        const Point& rPointBXyz, 
+        const Point& rPointAUvw, 
+        const Point& rPointBUvw,
+        const std::size_t OrderU, 
+        const std::size_t OrderV, 
+        const std::size_t NumKnotSpansU, 
+        const std::size_t NumKnotSpansV, 
+        const bool AddSurfaceToModelPart) override;
+
+    /**
+     * @brief Creates a regular grid composed out of bivariant B-splines.
+     * @param PointA Lower point of bounding 3D box.
+     * @param PointB Upper point of bounding 3D box.
+     * @param Order  Polynomial degree in each direction u,v,w.
+     * @param NumKnotSpans Number of equidistant elements/knot spans in each direction u,v,w.
+     * @note The CP'S are defined as nodes and added to the rModelPart.
+     **/
+    void CreateAndAddRegularGrid3D(
+        ModelPart& rModelPart, 
+        const Point& rPointAXyz, 
+        const Point& rPointBXyz, 
+        const Point& rPointAUvw, 
+        const Point& rPointBUvw,
+        const std::size_t OrderU, 
+        const std::size_t OrderV, 
+        const std::size_t OrderW, 
+        const std::size_t NumKnotSpansU, 
+        const std::size_t NumKnotSpansV, 
+        const std::size_t NumKnotSpansW, 
+        const bool AddVolumeToModelPart) override;
+
+private:
+
+    ///@name Private Member Variables
+    ///@{
+
+    ///@}
+    ///@name Private Operations
+    ///@{
+
+};
+
+} // End namesapce Kratos