[Core] Add Voxel Mesh Generation Modeler

kratos/includes/kratos_application.h

@@ -76,6 +76,7 @@
 #include "modeler/serial_model_part_combinator_modeler.h"
 #include "modeler/combine_model_part_modeler.h"
 #include "modeler/connectivity_preserve_modeler.h"
+#include "modeler/voxel_mesh_generator_modeler.h"
 
 namespace Kratos {
 ///@name Kratos Classes
@@ -495,6 +496,7 @@ class KRATOS_API(KRATOS_CORE) KratosApplication {
     const SerialModelPartCombinatorModeler mSerialModelPartCombinatorModeler;
     const CombineModelPartModeler mCombineModelPartModeler;
     const ConnectivityPreserveModeler mConnectivityPreserveModeler;
+    const VoxelMeshGeneratorModeler mVoxelMeshGeneratorModeler;
 
     // Base constitutive law definition
     const ConstitutiveLaw mConstitutiveLaw;

kratos/modeler/coloring/color_and_intersect_with_cells_in_touch.cpp

@@ -0,0 +1,99 @@
+//    |  /           |
+//    ' /   __| _` | __|  _ \   __|
+//    . \  |   (   | |   (   |\__ `
+//   _|\_\_|  \__,_|\__|\___/ ____/
+//                   Multi-Physics
+//
+//  License:         BSD License
+//                   Kratos default license: kratos/license.txt
+//
+//  Main authors:    Pooyan Dadvand
+//
+
+// System includes
+
+// External includes
+
+// Project includes
+#include "geometries/geometry.h"
+#include "color_and_intersect_with_cells_in_touch.h"
+
+namespace Kratos {
+
+ColorAndIntersectWithCellsInTouch::ColorAndIntersectWithCellsInTouch(VoxelMeshGeneratorModeler& rModeler, Parameters ColoringParameters):
+    VoxelMesherColoring(rModeler, ColoringParameters)
+{}
+
+
+void ColorAndIntersectWithCellsInTouch::Apply() const
+{
+    auto parameters = GetParameters();
+    auto& r_model_part = GetModelPart(parameters["model_part_name"].GetString());
+
+    const int inside_color = parameters["color"].GetInt();
+    const std::string input_entities = parameters["input_entities"].GetString();
+
+    auto& r_skin_intersections = GetIntersections(inside_color);
+
+    if (input_entities == "elements") {
+        for(auto& r_geometrical_object : r_model_part.Elements()) {
+            auto& r_geometry = r_geometrical_object.GetGeometry();
+            CheckGeometryType(r_geometry.GetGeometryType());
+            ApplyColorToCellsInTouchWithGeometryAndComputeIntersection(r_geometry, inside_color, r_skin_intersections);
+        }
+    } else if(input_entities == "conditions") {
+        for(auto& r_geometrical_object : r_model_part.Conditions()) {
+            auto& r_geometry = r_geometrical_object.GetGeometry();
+            CheckGeometryType(r_geometry.GetGeometryType());
+            ApplyColorToCellsInTouchWithGeometryAndComputeIntersection(r_geometry, inside_color, r_skin_intersections);
+        }
+    } else if(input_entities == "geometries") {
+        for(auto& r_geometry : r_model_part.Geometries()) {
+            CheckGeometryType(r_geometry.GetGeometryType());
+            ApplyColorToCellsInTouchWithGeometryAndComputeIntersection(r_geometry, inside_color, r_skin_intersections);
+        }
+    } else {
+        KRATOS_ERROR << "The input_entities  " << parameters["input_entities"] << " is not supported. The supported input_entities are  elements and conditions" << std::endl;
+    }
+}
+
+
+Parameters ColorAndIntersectWithCellsInTouch::GetDefaultParameters() const {
+    return Parameters(R"({
+        "type" : "Undefined_coloring_type",
+        "model_part_name": "Undefined",
+        "color": -1,
+        "cell_color": -1,
+        "input_entities": "elements",
+        "outside_color": 0
+    })");
+}
+
+
+void ColorAndIntersectWithCellsInTouch::ApplyColorToCellsInTouchWithGeometryAndComputeIntersection(
+    const Element::GeometryType& rGeometry,
+    int InsideColor,
+    Internals::SkinIntersection& rSkinIntersection) const
+{
+    auto& r_colors = GetMeshColors();
+
+    auto p_work_geometry = rSkinIntersection.ConvertToWorkGeometry(rGeometry);
+    array_1d<std::size_t, 3> min_position(3,0);
+    array_1d<std::size_t, 3> max_position(3,0);
+    r_colors.CalculateOuterMinMaxNodePositions(rGeometry, min_position, max_position);
+    for(std::size_t k = min_position[2] ; k < max_position[2] ; k++){
+        for(std::size_t j = min_position[1] ; j < max_position[1] ; j++){
+            for(std::size_t i = min_position[0] ; i < max_position[0] ; i++){
+                Point cell_min_point = r_colors.GetPoint(i,j,k);
+                Point cell_max_point = r_colors.GetPoint(i+1,j+1,k+1);
+                if(rGeometry.HasIntersection(cell_min_point,cell_max_point)){
+                    r_colors.GetElementalColor(i,j,k) = InsideColor;
+
+                    rSkinIntersection.ComputeCutInsideCell(p_work_geometry, cell_min_point, cell_max_point, i, j, k);
+                }
+            }
+        }
+    }
+}
+
+}

kratos/modeler/coloring/color_and_intersect_with_cells_in_touch.h

@@ -0,0 +1,45 @@
+//    |  /           |
+//    ' /   __| _` | __|  _ \   __|
+//    . \  |   (   | |   (   |\__ `
+//   _|\_\_|  \__,_|\__|\___/ ____/
+//                   Multi-Physics
+//
+//  License:         BSD License
+//                   Kratos default license: kratos/license.txt
+//
+//  Main authors:    Pooyan Dadvand
+//
+
+#pragma once
+
+// System includes
+
+// External includes
+
+// Project includes
+#include "geometries/geometry.h"
+#include "voxel_mesher_coloring.h"
+
+namespace Kratos {
+
+class ColorAndIntersectWithCellsInTouch: public VoxelMesherColoring {
+
+public:
+    ColorAndIntersectWithCellsInTouch(VoxelMeshGeneratorModeler& rModeler, Parameters ColoringParameters);
+
+    ~ColorAndIntersectWithCellsInTouch() override = default;
+
+    void Apply() const override;
+
+    Parameters GetDefaultParameters() const override;
+
+private:
+
+    void ApplyColorToCellsInTouchWithGeometryAndComputeIntersection(
+        const Geometry<Node>& rGeometry,
+        int InsideColor,
+        Internals::SkinIntersection& rSkinIntersection) const;
+
+};
+
+}

kratos/modeler/coloring/color_cell_faces.cpp

@@ -0,0 +1,67 @@
+//    |  /           |
+//    ' /   __| _` | __|  _ \   __|
+//    . \  |   (   | |   (   |\__ `
+//   _|\_\_|  \__,_|\__|\___/ ____/
+//                   Multi-Physics
+//
+//  License:         BSD License
+//                   Kratos default license: kratos/license.txt
+//
+//  Main authors:    Pooyan Dadvand
+//
+
+// System includes
+
+// External includes
+
+// Project includes
+#include "geometries/geometry.h"
+#include "color_cell_faces.h"
+
+namespace Kratos {
+
+ColorCellFaces::ColorCellFaces(VoxelMeshGeneratorModeler& rModeler, Parameters ColoringParameters):
+    VoxelMesherColoring(rModeler, ColoringParameters)
+{}
+
+
+void ColorCellFaces::Apply() const
+{
+    auto parameters = GetParameters();
+    auto& r_model_part = GetModelPart(parameters["model_part_name"].GetString());
+    CartesianMeshColors& r_colors = GetMeshColors();
+
+    const int outside_color = parameters["outside_color"].GetInt();
+    const int interface_color = parameters["color"].GetInt();
+    const int cell_color = parameters["cell_color"].GetInt();
+    const std::string input_entities = parameters["input_entities"].GetString();
+
+    array_1d< std::size_t, 3 > min_ray_position{0, 0, 0};
+    array_1d< std::size_t, 3 > max_ray_position{0, 0, 0};
+
+    r_colors.CalculateMinMaxCenterOfElementPositions(r_model_part.Nodes(), min_ray_position, max_ray_position);
+    r_colors.InitializeRays(min_ray_position, max_ray_position, "center_of_elements");
+
+    if(input_entities == "elements") {
+        for(auto& element : r_model_part.Elements()) {
+            Element::GeometryType& r_geometry = element.GetGeometry();
+            CheckGeometryType(r_geometry.GetGeometryType());
+            r_colors.AddGeometry(r_geometry, false);
+        }
+    } else if(input_entities == "conditions") {
+        for(auto& condition : r_model_part.Conditions()) {
+            auto& r_geometry = condition.GetGeometry();
+            CheckGeometryType(r_geometry.GetGeometryType());
+            r_colors.AddGeometry(r_geometry, false);
+        }
+    } else if(input_entities == "geometries") {
+        for(auto& r_geometry : r_model_part.Geometries()) {
+            CheckGeometryType(r_geometry.GetGeometryType());
+            r_colors.AddGeometry(r_geometry, false);
+        }
+    }
+
+    r_colors.CalculateElementalFaceColors(min_ray_position, max_ray_position, interface_color, outside_color, cell_color);
+}
+
+}

kratos/modeler/coloring/color_cell_faces.h

@@ -0,0 +1,35 @@
+//    |  /           |
+//    ' /   __| _` | __|  _ \   __|
+//    . \  |   (   | |   (   |\__ `
+//   _|\_\_|  \__,_|\__|\___/ ____/
+//                   Multi-Physics
+//
+//  License:         BSD License
+//                   Kratos default license: kratos/license.txt
+//
+//  Main authors:    Pooyan Dadvand
+//
+
+#pragma once
+
+// System includes
+
+// External includes
+
+// Project includes
+#include "voxel_mesher_coloring.h"
+
+namespace Kratos {
+
+class ColorCellFaces: public VoxelMesherColoring {
+
+public:
+    ColorCellFaces(VoxelMeshGeneratorModeler& rModeler, Parameters ColoringParameters);
+
+    ~ColorCellFaces() override = default;
+
+    void Apply() const override;
+
+};
+
+}

kratos/modeler/coloring/color_cell_faces_between_colors.cpp

@@ -0,0 +1,38 @@
+//    |  /           |
+//    ' /   __| _` | __|  _ \   __|
+//    . \  |   (   | |   (   |\__ `
+//   _|\_\_|  \__,_|\__|\___/ ____/
+//                   Multi-Physics
+//
+//  License:         BSD License
+//                   Kratos default license: kratos/license.txt
+//
+//  Main authors:    Pooyan Dadvand
+//
+
+// System includes
+
+// External includes
+
+// Project includes
+#include "geometries/geometry.h"
+#include "color_cell_faces_between_colors.h"
+
+namespace Kratos {
+
+ColorCellFacesBetweenColors::ColorCellFacesBetweenColors(VoxelMeshGeneratorModeler& rModeler, Parameters ColoringParameters):
+    VoxelMesherColoring(rModeler, ColoringParameters)
+{}
+
+
+void ColorCellFacesBetweenColors::Apply() const
+{
+    Parameters parameters = GetParameters();
+    const int outside_color = parameters["outside_color"].GetInt();
+    const int interface_color = parameters["color"].GetInt();
+    const int cell_color = parameters["cell_color"].GetInt();
+
+    GetMeshColors().CalculateElementalFaceColorsBetweenColors(interface_color, outside_color, cell_color);
+}
+
+}

kratos/modeler/coloring/color_cell_faces_between_colors.h

@@ -0,0 +1,34 @@
+//    |  /           |
+//    ' /   __| _` | __|  _ \   __|
+//    . \  |   (   | |   (   |\__ `
+//   _|\_\_|  \__,_|\__|\___/ ____/
+//                   Multi-Physics
+//
+//  License:         BSD License
+//                   Kratos default license: kratos/license.txt
+//
+//  Main authors:    Pooyan Dadvand
+//
+
+#pragma once
+
+// System includes
+
+// External includes
+
+// Project includes
+#include "voxel_mesher_coloring.h"
+
+namespace Kratos {
+
+class ColorCellFacesBetweenColors: public VoxelMesherColoring {
+
+public:
+    ColorCellFacesBetweenColors(VoxelMeshGeneratorModeler& rModeler, Parameters ColoringParameters);
+
+    ~ColorCellFacesBetweenColors() override = default;
+
+    void Apply() const override;
+};
+
+}