support coloring of mesh segments

src/Mod/Mesh/Gui/ViewProvider.cpp

@@ -1913,6 +1913,37 @@ void ViewProviderMesh::highlightComponents()
     pcShapeMaterial->diffuseColor.finishEditing();
 }
 
+void ViewProviderMesh::highlightSegments(const std::vector<App::Color>& colors)
+{
+    const Mesh::MeshObject& rMesh = static_cast<Mesh::Feature*>(pcObject)->Mesh.getValue();
+    unsigned long numSegm = rMesh.countSegments();
+    if (numSegm == colors.size()) {
+        // Colorize the components
+        pcMatBinding->value = SoMaterialBinding::PER_FACE;
+        int uCtFacets = (int)rMesh.countFacets();
+
+        pcShapeMaterial->diffuseColor.setNum(uCtFacets);
+        SbColor* cols = pcShapeMaterial->diffuseColor.startEditing();
+        for (unsigned long i=0; i<numSegm; i++) {
+            std::vector<unsigned long> segm = rMesh.getSegment(i).getIndices();
+            float fRed = colors[i].r;
+            float fGrn = colors[i].g;
+            float fBlu = colors[i].b;
+            for (std::vector<unsigned long>::iterator it = segm.begin(); it != segm.end(); ++it) {
+                cols[*it].setValue(fRed,fGrn,fBlu);
+            }
+        }
+        pcShapeMaterial->diffuseColor.finishEditing();
+    }
+    else if (colors.size() == 1) {
+        pcMatBinding->value = SoMaterialBinding::OVERALL;
+        float fRed = colors[0].r;
+        float fGrn = colors[0].g;
+        float fBlu = colors[0].b;
+        pcShapeMaterial->diffuseColor.setValue(fRed,fGrn,fBlu);
+    }
+}
+
 // ------------------------------------------------------
 
 PROPERTY_SOURCE(MeshGui::ViewProviderIndexedFaceSet, MeshGui::ViewProviderMesh)

src/Mod/Mesh/Gui/ViewProvider.h

@@ -160,6 +160,7 @@ public:
     /*! The size of the array must be equal to the number of facets. */
     void setFacetTransparency(const std::vector<float>&);
     void resetFacetTransparency();
+    void highlightSegments(const std::vector<App::Color>&);
     //@}
 
 protected:

src/Mod/MeshPart/Gui/CMakeLists.txt

@@ -28,6 +28,8 @@ link_directories(${OCC_LIBRARY_DIR})
 
 set(MeshPartGui_LIBS
     MeshPart
+    PartGui
+    MeshGui
     FreeCADGui
 )
 

src/Mod/MeshPart/Gui/PreCompiled.h

@@ -30,11 +30,15 @@
 #ifdef FC_OS_WIN32
 # define MeshExport        __declspec(dllimport)
 # define PartExport        __declspec(dllimport)
+# define MeshGuiExport     __declspec(dllimport)
+# define PartGuiExport     __declspec(dllimport)
 # define MeshPartAppExport __declspec(dllimport)
 # define MeshPartGuiExport __declspec(dllexport)
 #else // for Linux
 # define MeshExport
 # define PartExport
+# define MeshGuiExport
+# define PartGuiExport
 # define MeshPartAppExport
 # define MeshPartGuiExport
 #endif
@@ -45,8 +49,8 @@
 #endif
 
 #ifdef _PreComp_
-
-// Python
+
+// Python
 #include <Python.h>
 
 // standard
@@ -74,7 +78,7 @@
 #ifndef __Qt4All__
 # include <Gui/Qt4All.h>
 #endif
-
+
 #endif //_PreComp_
 
 #endif // __PRECOMPILED_GUI__

src/Mod/MeshPart/Gui/Tessellation.cpp

@@ -41,6 +41,8 @@
 #include <Gui/ViewProvider.h>
 #include <Gui/WaitCursor.h>
 #include <Mod/Part/App/PartFeature.h>
+#include <Mod/Mesh/Gui/ViewProvider.h>
+#include <Mod/Part/Gui/ViewProvider.h>
 
 using namespace MeshPartGui;
 
@@ -327,6 +329,21 @@ bool Tessellation::accept()
                 }
             }
             Gui::Command::doCommand(Gui::Command::Doc, (const char*)cmd.toUtf8());
+
+            // if Standard mesher is used and face colors should be applied
+            if (method == 0) { // Standard
+                if (ui->meshShapeColors->isChecked()) {
+                    Gui::ViewProvider* vpm = Gui::Application::Instance->getViewProvider
+                            (activeDoc->getActiveObject());
+                    Gui::ViewProvider* vpp = Gui::Application::Instance->getViewProvider
+                            (activeDoc->getObject(shape.toLatin1()));
+                    MeshGui::ViewProviderMesh* vpmesh = dynamic_cast<MeshGui::ViewProviderMesh*>(vpm);
+                    PartGui::ViewProviderPart* vppart = dynamic_cast<PartGui::ViewProviderPart*>(vpp);
+                    if (vpmesh && vppart) {
+                        vpmesh->highlightSegments(vppart->DiffuseColor.getValues());
+                    }
+                }
+            }
         }
         activeDoc->commitTransaction();
     }