show selected point also in solution scene

libsrc/visualization/mvdraw.cpp

@@ -71,6 +71,7 @@ namespace netgen
   int VisualScene :: seledge;
 
   int VisualScene :: selecttimestamp;
+  optional<Point<3>> VisualScene :: marker = nullopt;
 
   int VisualScene :: viewport[4];
 
@@ -708,6 +709,27 @@ namespace netgen
   }
 
 
+  void VisualScene :: DrawMarker()
+  {
+    static constexpr GLubyte cross[] = { 0xc6, 0xee, 0x7c, 0x38, 0x7c, 0xee, 0xc6 };
+
+    if(!marker)
+        return;
+
+    glColor3d (0, 0, 1);
+
+    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+    glDisable (GL_COLOR_MATERIAL);
+    glDisable (GL_LIGHTING);
+    glDisable (GL_CLIP_PLANE0);
+
+    auto & p = *marker;
+    glRasterPos3d (p[0], p[1], p[2]);
+    glBitmap (7, 7, 3, 3, 0, 0, &cross[0]);
+  }
+
+
   void VisualScene :: DrawNetgenLogo ()
   {
     if (!vispar.drawnetgenlogo) return;

libsrc/visualization/mvdraw.hpp

@@ -32,6 +32,7 @@ namespace netgen
     static int DLL_HEADER seledge;
 
     static int selecttimestamp;
+    static optional<Point<3>> marker;
 
   public:
     static int viewport[4];
@@ -70,6 +71,7 @@ namespace netgen
     DLL_HEADER void CreateTexture (int ncols, int linear, double alpha, int typ);
     DLL_HEADER void DrawColorBar (double minval, double maxval, int logscale = 0, bool linear = 1);
     DLL_HEADER void DrawCoordinateCross ();
+    DLL_HEADER void DrawMarker();
     DLL_HEADER void DrawNetgenLogo ();
     DLL_HEADER void SetOpenGlColor(double val, double valmin, double valmax, int logscale = 0);
 	

libsrc/visualization/vsmesh.cpp

@@ -256,36 +256,7 @@ namespace netgen
 	glCallList (edgelist);
       }
 
-    if (selpoint > 0 && selpoint <= mesh->GetNP())
+    DrawMarker();
-      {
-	/*
-	  glPointSize (3.0);
-	  glColor3d (0, 0, 1);
-	  glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, matcolblue);
-	  glBegin (GL_POINTS);
-
-	  const Point3d p = mesh->Point(selpoint);
-	  glVertex3f (p.X(), p.Y(), p.Z());
-	  glEnd();
-	*/
-
-	glColor3d (0, 0, 1);
-
-	static GLubyte cross[] =
-	  {
-            0xc6, 0xee, 0x7c, 0x38, 0x7c, 0xee, 0xc6
-	  };
-	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-
-	glDisable (GL_COLOR_MATERIAL);
-	glDisable (GL_LIGHTING);
-	glDisable (GL_CLIP_PLANE0);
-
-	const Point3d p = mesh->Point(selpoint);
-	glRasterPos3d (p.X(), p.Y(), p.Z());
-	glBitmap (7, 7, 3, 3, 0, 0, &cross[0]);
-      }
-
 
     glDisable(GL_CLIP_PLANE0);
 
@@ -3133,6 +3104,7 @@ namespace netgen
 
     BuildFilledList (true);
 
+    marker = nullopt;
     MouseDblClickSelect(px,py,clipplane,backcolor,transformationmat,center,rad,
 			filledlist,selelement,selface,seledge,selpoint,selpoint2,locpi);
 
@@ -3168,6 +3140,7 @@ namespace netgen
                  &result[0], &result[1], &result[2]);
 
     p = Point<3>{result[0], result[1], result[2]};
+    marker = p;
     return true;
   }
 

libsrc/visualization/vssolution.cpp

@@ -635,6 +635,8 @@ namespace netgen
     for (int i = 0; i < user_vis.Size(); i++)
       user_vis[i] -> Draw();
 
+    DrawMarker();
+
     glPopMatrix();
     
     glDisable(GL_CLIP_PLANE0);
@@ -4757,6 +4759,7 @@ namespace netgen
   {
     auto mesh = GetMesh();
     auto dim = mesh->GetDimension();
+    marker = nullopt;
 
     auto formatComplex = [](double real, double imag)
     {
@@ -4832,6 +4835,7 @@ namespace netgen
             if(auto el3d = mesh->GetElementOfPoint( p_clipping_plane, lami ))
               {
                 cout << endl << "Selected point " << p_clipping_plane << " on clipping plane" << endl;
+                marker = p_clipping_plane;
 
                 bool have_scal_func = scalfunction!=-1 && soldata[scalfunction]->draw_volume;
                 bool have_vec_func = vecfunction!=-1 && soldata[vecfunction]->draw_volume;
@@ -4872,6 +4876,8 @@ namespace netgen
     if(!found_point)
         return;
 
+    marker = p;
+
     if(selelement==0)
         return;