Rewrite double-click selection in GUI

libsrc/visualization/mvdraw.cpp

@@ -77,9 +77,11 @@ namespace netgen
   int VisualScene :: locpi;
   int VisualScene :: seledge;
 
-  int VisualScene :: selecttimestamp;
   optional<Point<3>> VisualScene :: marker = nullopt;
 
+  int VisualScene :: subdivision_timestamp = -1;
+  int VisualScene :: subdivisions = 2;
+
   int VisualScene :: viewport[4];
 
   VisualizationParameters :: VisualizationParameters()

libsrc/visualization/mvdraw.hpp

@@ -31,9 +31,10 @@ namespace netgen
     static int locpi;
     static int NGGUI_API seledge;
 
-    static int selecttimestamp;
     static optional<Point<3>> marker;
 
+    static int subdivision_timestamp;
+    static int subdivisions;
   public:
     static int viewport[4];
     static GLuint coltexname;
@@ -126,35 +127,47 @@ namespace netgen
 
   class VisualSceneMesh : public VisualScene
   {
-    int filledlist;
+    int filledlist = 0;
-    int linelist;
+    int linelist = 0;
-    int edgelist;
+    int edgelist = 0;
-    int pointnumberlist;
+    int pointnumberlist = 0;
 
-    int tetlist;
+    int tetlist = 0;
-    int prismlist;
+    int prismlist = 0;
-    int pyramidlist;
+    int pyramidlist = 0;
-    int hexlist;
+    int hexlist = 0;
 
-    int badellist;
+    int badellist = 0;
-    int identifiedlist;
+    int identifiedlist = 0;
-    int domainsurflist;
+    int domainsurflist = 0;
 
-    int vstimestamp;//, selecttimestamp;
+    int vstimestamp = -1;
-    int filledtimestamp;
+    int filledtimestamp = -1;
-    int linetimestamp;
+    int linetimestamp = -1;
-    int edgetimestamp;
+    int edgetimestamp = -1;
-    int pointnumbertimestamp;
+    int pointnumbertimestamp = -1;
 
-    int tettimestamp;
+    int tettimestamp = -1;
-    int prismtimestamp;
+    int prismtimestamp = -1;
-    int pyramidtimestamp;
+    int pyramidtimestamp = -1;
-    int hextimestamp;
+    int hextimestamp = -1;
 
-    int badeltimestamp;
+    int badeltimestamp = -1;
-    int identifiedtimestamp;
+    int identifiedtimestamp = -1;
-    int domainsurftimestamp;
+    int domainsurftimestamp = -1;
 
+    struct {
+      unsigned framebuffer = 0;
+      unsigned render_buffers[2];
+      unsigned width = 0;
+      unsigned height = 0;
+      unsigned x = 0;
+      unsigned y = 0;
+      int list = 0;
+      int list_timestamp = -1;
+      double projmat[16];
+      int viewport[4];
+    } select;
 
 #ifdef PARALLELGL
     NgArray<int> par_linelists;
@@ -200,7 +213,7 @@ namespace netgen
     { return selelement; }
 	NGGUI_API int SelectedPoint () const
     { return selpoint; }
-    void BuildFilledList (bool names);
+    void BuildFilledList (bool select);
     // private:
     void BuildLineList();
     void BuildEdgeList();
@@ -215,7 +228,9 @@ namespace netgen
     void BuildIdentifiedList();
     void BuildDomainSurfList();
 
-    bool Unproject (int px, int py, Point<3> &p);
+    bool SelectSurfaceElement (int px, int py, Point<3> &p, bool select_on_clipping_plane);
+    bool Unproject(int px, int py, Point<3> &p);
+    ngcore::INT<2> Project(Point<3> p);
   };
 
   NGGUI_API extern VisualSceneMesh vsmesh;

libsrc/visualization/vsmesh.cpp

@@ -23,38 +23,9 @@ namespace netgen
   VisualSceneMesh :: VisualSceneMesh ()
     : VisualScene()
   {
-    filledlist = 0;
-    linelist = 0;
-    edgelist = 0;
-    badellist = 0;
-    tetlist = 0;
-    prismlist = 0;
-    hexlist = 0;
-    pyramidlist = 0;
-    identifiedlist = 0;
-    pointnumberlist = 0;
-    domainsurflist = 0;
-
-    vstimestamp = -1; // GetTimeStamp();
-    selecttimestamp = -1; // GetTimeStamp();
-    filledtimestamp = -1; // GetTimeStamp();
-    linetimestamp = -1; // GetTimeStamp();
-    edgetimestamp = -1; // GetTimeStamp();
-    pointnumbertimestamp = -1; // GetTimeStamp();
-
-    tettimestamp = -1; // GetTimeStamp();
-    prismtimestamp = -1; // GetTimeStamp();
-    hextimestamp = -1; // GetTimeStamp();
-    pyramidtimestamp = -1; // GetTimeStamp();
-
-    badeltimestamp = -1; // GetTimeStamp();
-    identifiedtimestamp = -1; // GetTimeStamp();
-    domainsurftimestamp = -1; // GetTimeStamp();
-
-
     selface = -1;
     selelement = -1;
-    locpi = 1;
+    locpi = -2;
     selpoint = PointIndex::INVALID;
     selpoint2 = PointIndex::INVALID;
     seledge = -1;
@@ -62,7 +33,6 @@ namespace netgen
     minh = 0.0;
     maxh = 0.0;
     user_me_handler = NULL;
-
   }
 
   VisualSceneMesh :: ~VisualSceneMesh ()
@@ -149,12 +119,8 @@ namespace netgen
     SetClippingPlane ();
 
     if (vispar.drawfilledtrigs)
-      {
-	if (filledtimestamp < mesh->GetTimeStamp () ||
-            filledtimestamp < selecttimestamp)
       {
         BuildFilledList (false);
-	  }
 
 
 #ifdef PARALLELGL
@@ -883,12 +849,17 @@ namespace netgen
 
 
 
-  void VisualSceneMesh :: BuildFilledList (bool names)
+  void VisualSceneMesh :: BuildFilledList (bool build_select)
   {
     shared_ptr<Mesh> mesh = GetMesh();
     
     static int timer = NgProfiler::CreateTimer ("Mesh::BuildFilledList");
     NgProfiler::RegionTimer reg (timer);
+    auto & list = build_select ? select.list : filledlist;
+    auto & timestamp = build_select ? select.list_timestamp : filledtimestamp;
+    if (list && timestamp > max(mesh->GetTimeStamp(), subdivision_timestamp))
+      return;
+
 
 #ifdef PARALLELGL
     if (id == 0 && ntasks > 1)
@@ -901,18 +872,18 @@ namespace netgen
 	for ( int dest = 1; dest < ntasks; dest++ )
 	  MyMPI_Recv (par_filledlists[dest], dest, MPI_TAG_VIS);
 
-	if (filledlist)
+	if (list)
-	  glDeleteLists (filledlist, 1);
+	  glDeleteLists (list, 1);
 
-	filledlist = glGenLists (1);
+	list = glGenLists (1);
-	glNewList (filledlist, GL_COMPILE);
+	glNewList (list, GL_COMPILE);
 
 	for ( int dest = 1; dest < ntasks; dest++ )
 	  glCallList (par_filledlists[dest]);
 
 	glEndList();
 
-	filledtimestamp = NextTimeStamp();
+	timestamp = NextTimeStamp();
 	return;
       }
 
@@ -925,13 +896,13 @@ namespace netgen
 	lock -> Lock();
       }
 
-    filledtimestamp = NextTimeStamp();
+    timestamp = NextTimeStamp();
 
-    if (filledlist)
+    if (list)
-      glDeleteLists (filledlist, 1);
+      glDeleteLists (list, 1);
 
-    filledlist = glGenLists (1);
+    list = glGenLists (1);
-    glNewList (filledlist, GL_COMPILE);
+    glNewList (list, GL_COMPILE);
 
       
 #ifdef STLGEOM
@@ -967,6 +938,14 @@ namespace netgen
     else
       glDisable (GL_COLOR_MATERIAL);
 
+    if(build_select)
+    {
+      glDisable(GL_TEXTURE_2D);
+      glDisable(GL_FOG);
+      glDisable(GL_LIGHTING);
+      glDisable (GL_COLOR_MATERIAL);
+    }
+
 
     GLfloat matcol[] = { 0, 1, 0, 1 };
     GLfloat matcolsel[] = { 1, 0, 0, 1 };
@@ -976,7 +955,7 @@ namespace netgen
 
     CurvedElements & curv = mesh->GetCurvedElements();
 
-    int hoplotn = 1 << vispar.subdivisions;
+    int hoplotn = 1 << subdivisions;
     
     Array<SurfaceElementIndex> seia;
 
@@ -993,10 +972,13 @@ namespace netgen
         for (auto i : Range(4))
             matcol[i] = mesh->GetFaceDescriptor(faceindex).SurfColour()[i];
 
+        if(!build_select)
+        {
           if (faceindex == selface)
             glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, matcolsel);
           else
             glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, matcol);
+        }
 	
         static Point<3> xa[129];
         static Vec<3> na[129];
@@ -1020,8 +1002,14 @@ namespace netgen
             if (!drawel)
 	      continue;
 	    
-	    if (names)
+	    if (build_select)
-	      glLoadName (sei+1);
+            {
+              GLushort r,g,b;
+              r = (sei+1) % (1<<16);
+              g = (sei+1) >> 16;
+              b = 0;
+              glColor3us(r,g,b);
+            }
 
             switch (el.GetType())
 	      {
@@ -1267,7 +1255,7 @@ namespace netgen
 #ifdef PARALLELGL
     glFinish();
     if (id > 0)
-      MyMPI_Send (filledlist, 0, MPI_TAG_VIS);
+      MyMPI_Send (list, 0, MPI_TAG_VIS);
 #endif
   }
 
@@ -1335,7 +1323,7 @@ namespace netgen
     glLineWidth (1.0f);
 
 
-    int hoplotn = 1 << vispar.subdivisions;
+    int hoplotn = 1 << subdivisions;
 
     // PrintMessage (3, "nse = ", mesh->GetNSE());
     for (SurfaceElementIndex sei = 0; sei < mesh->GetNSE(); sei++)
@@ -1621,7 +1609,7 @@ namespace netgen
 
 	if (mesh->GetCurvedElements().IsHighOrder())
 	  {
-            int hoplotn = 1 << vispar.subdivisions;
+            int hoplotn = 1 << subdivisions;
             // mesh->GetCurvedElements().GetNVisualSubsecs();
 
             Point<3> x;
@@ -1832,7 +1820,7 @@ namespace netgen
     else
       glShadeModel (GL_SMOOTH);
 
-    int hoplotn = max (2, 1 << vispar.subdivisions);
+    int hoplotn = max (2, 1 << subdivisions);
 
 
 
@@ -2134,7 +2122,7 @@ namespace netgen
 
 		Point<3> grid[11][11];
 		Point<3> fpts[4];
-		int order = vispar.subdivisions+1;
+		int order = subdivisions+1;
 
 		for (int trig = 0; trig < 2; trig++)
 		  {
@@ -2233,7 +2221,7 @@ namespace netgen
 
 
 		/*
-		  int hoplotn = 1 << vispar.subdivisions;
+		  int hoplotn = 1 << subdivisions;
 		  // int hoplotn = curv.GetNVisualSubsecs();
 
 		  const Point3d * facepoint = MeshTopology :: GetVertices (TRIG);
@@ -2521,7 +2509,7 @@ namespace netgen
 
 		Point<3> grid[11][11];
 		Point<3> fpts[4];
-		int order = vispar.subdivisions+1;
+		int order = subdivisions+1;
 
 		for (int quad = 0; quad<6; quad++)
 		  {
@@ -2672,7 +2660,7 @@ namespace netgen
 
 		Point<3> grid[11][11];
 		Point<3> fpts[4];
-		int order = vispar.subdivisions+1;
+		int order = subdivisions+1;
 
 		for (int trig = 0; trig < 4; trig++)
 		  {
@@ -3097,28 +3085,105 @@ namespace netgen
 
 
 
-
+  bool VisualSceneMesh :: SelectSurfaceElement (int px, int py, Point<3> &p, bool select_on_clipping_plane)
-  bool VisualSceneMesh :: Unproject (int px, int py, Point<3> &p)
   {
+    selelement = -1;
+    marker = nullopt;
     shared_ptr<Mesh> mesh = GetMesh();
+    if(px != select.x || py != select.y)
+    {
+      select.x = px;
+      select.y = py;
+      locpi = -2;
+    }
 
+    glGetIntegerv (GL_VIEWPORT, select.viewport);
+    GLenum err;
+    if(select.framebuffer == 0 || select.viewport[2] != select.width || select.viewport[3] != select.height)
+    {
+      select.width = select.viewport[2];
+      select.height = select.viewport[3];
+      if(select.framebuffer != 0)
+      {
+        glDeleteRenderbuffers(2, select.render_buffers);
+        glDeleteFramebuffers(1, &select.framebuffer);
+      }
+
+      glGenFramebuffers(1, &select.framebuffer);
+      glBindFramebuffer(GL_FRAMEBUFFER, select.framebuffer);
+
+      // create, reserve and attach color and depth renderbuffer
+      glGenRenderbuffers(2, select.render_buffers);
+      glBindRenderbuffer(GL_RENDERBUFFER, select.render_buffers[0]);
+      glRenderbufferStorage(GL_RENDERBUFFER, GL_RGB16, select.width, select.height);
+      glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, select.render_buffers[0]);
+
+      glBindRenderbuffer(GL_RENDERBUFFER, select.render_buffers[1]);
+      glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, select.width, select.height);
+      glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, select.render_buffers[1]);
+
+      // check if framebuffer status is complete
+      if(int fbstatus; (fbstatus = glCheckFramebufferStatus(GL_FRAMEBUFFER)) != GL_FRAMEBUFFER_COMPLETE)
+        cerr << "no frame buffer " << fbstatus << endl;
+
+    }
+      glFlush();
+
+      glBindFramebuffer(GL_FRAMEBUFFER, select.framebuffer);
       BuildFilledList (true);
 
-    marker = nullopt;
+      glEnable(GL_DEPTH_TEST);
-    MouseDblClickSelect(px,py,clipplane,backcolor,transformationmat,center,rad,
+      glClearColor(0, 0, 0, 1.0);
-			filledlist,selelement,selface,seledge,selpoint,selpoint2,locpi);
+      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
+      glMatrixMode (GL_MODELVIEW);
+      glPushMatrix();
+      glLoadIdentity();
+      glMultMatrixd (transformationmat);
 
-    GLdouble /* modelview[16], */ projection[16];
+      glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
-    GLint viewport[4];
+      auto hy = select.viewport[3] - py;
-    GLdouble result[3];
 
-    glGetDoublev(GL_PROJECTION_MATRIX, &projection[0]); 
+      SetClippingPlane();
-    glGetIntegerv(GL_VIEWPORT, &viewport[0]);
+      if (vispar.clipping.enable)
+      {
+        Vec<3> n(clipplane[0], clipplane[1], clipplane[2]);
+        double len = Abs(n);
+        double mu = -clipplane[3] / (len*len);
+        Point<3> p (mu * n);
+        n /= len;
+        Vec<3> t1 = n.GetNormal ();
+        Vec<3> t2 = Cross (n, t1);
 
-    int hy = viewport[3]-py;
+        double xi1mid = (center - p) * t1;
+        double xi2mid = (center - p) * t2;
 
-    GLfloat pz;
+        if(select_on_clipping_plane)
+        {
+          glColor3us(0,0,0);
+          glBegin (GL_QUADS);
+          glVertex3dv (p + (xi1mid-rad) * t1 + (xi2mid-rad) * t2);
+          glVertex3dv (p + (xi1mid+rad) * t1 + (xi2mid-rad) * t2);
+          glVertex3dv (p + (xi1mid+rad) * t1 + (xi2mid+rad) * t2);
+          glVertex3dv (p + (xi1mid-rad) * t1 + (xi2mid+rad) * t2);
+          glEnd ();
+        }
+      }
+      glCallList (select.list);
+      glFinish();
+
+      glGetDoublev (GL_PROJECTION_MATRIX, select.projmat);
+      auto found = Unproject(px, py, p);
+      if(found)
+      {
+        marker = p;
+        GLushort numbers[3];
+        glReadPixels (px, hy, 1, 1, GL_RGB, GL_UNSIGNED_SHORT, numbers);
+        selelement = numbers[0] + numbers[1]*(1<<16);
+        locpi++;
+      }
+      glBindFramebuffer(GL_FRAMEBUFFER, 0);
+      glPopMatrix();
 
     if(lock)
       {
@@ -3127,47 +3192,78 @@ namespace netgen
 	lock = NULL;
       }
 
-    // cout << "x, y = " << px << ", " << hy << endl;
+    return found;
+  }
+
+  bool VisualSceneMesh :: Unproject(int px, int py, Point<3> &p)
+  {
+    auto hy = select.viewport[3] - py;
+    float pz;
     glReadPixels (px, hy, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &pz);
+    if(pz<1 && pz>0)
+      gluUnProject(px, hy, pz, transformationmat, select.projmat, select.viewport,
+          &p[0], &p[1], &p[2]);
+    return pz<1 && pz>0;
+  }
 
-    if(pz>=1.0)
+  ngcore::INT<2> VisualSceneMesh :: Project(Point<3> p)
-        return false;
+  {
-    if(pz<=0.0)
+    Point<3> pwin;
-        return false;
+    gluProject(p[0], p[1], p[2], transformationmat, select.projmat, select.viewport,
+        &pwin[0], &pwin[1], &pwin[2]);
 
-    // cout << "pz = " << pz << endl;    
+    return ngcore::INT<2>(pwin[0]+0.5, select.viewport[3]-pwin[1]+0.5);
-    gluUnProject(px, hy, pz, transformationmat, projection, viewport,
-                 &result[0], &result[1], &result[2]);
-
-    p = Point<3>{result[0], result[1], result[2]};
-    marker = p;
-    return true;
   }
 
 
   void VisualSceneMesh :: MouseDblClick (int px, int py)
   {
     Point<3> p;
-    bool found_point = Unproject(px, py, p);
+    bool found_point = SelectSurfaceElement(px, py, p, false);
+    int sel_face = 0;
 
-    if(selelement!=-1)
+    if(selelement>0)
       {
         const Element2d & sel = GetMesh()->SurfaceElement(selelement);
 
+        auto pi_nearest = sel[0];
+        double min_dist = 1e99;
+        for(auto pi : sel.PNums())
+          if(Dist2(GetMesh()->Point(pi), p) < min_dist)
+          {
+            min_dist = Dist2(GetMesh()->Point(pi), p);
+            pi_nearest = pi;
+          }
+        auto p_win = Project(GetMesh()->Point(pi_nearest));
+        cout << endl;
+        if(abs(p_win[0]-px) < 5 && abs(p_win[1]-py) < 5)
+        {
+          cout << "select point " << pi_nearest << endl;
+          marker = GetMesh()->Point(pi_nearest);
+          sel_face = sel.GetIndex();
+          locpi = -2;
+        }
+        else
+        {
+          if(locpi < 0)
+          {
             cout << "select element " << selelement
               << " on face " << sel.GetIndex() << endl;
             cout << "Nodes: ";
             for (int i = 1; i <= sel.GetNP(); i++)
               cout << sel.PNum(i) << " ";
             cout << endl;
-
-	cout << "selected point " << selpoint
-	     << ", pos = " << GetMesh()->Point (selpoint)
-	     << endl;
-
-        cout << "seledge = " << seledge << endl;
-
           }
+          else {
+            auto pi = sel[locpi%sel.GetNP()];
+            auto p = GetMesh()->Points()[pi];
+            marker = p;
+            cout << "selected point " << pi << endl;
+          }
+        }
+      }
+
+    SetSelectedFace(sel_face);
 
     if(found_point)
       {
@@ -3179,353 +3275,21 @@ namespace netgen
           }
       }
 
-    selecttimestamp = NextTimeStamp();
-
     if(lock)
       {
 	lock->UnLock();
 	delete lock;
 	lock = NULL;
       }
-
-    /*
-      int i, hits;
-
-      // select surface triangle by mouse click
-
-      GLuint selbuf[10000];
-      glSelectBuffer (10000, selbuf);
-
-
-      glRenderMode (GL_SELECT);
-
-      GLint viewport[4];
-      glGetIntegerv (GL_VIEWPORT, viewport);
-
-
-      glMatrixMode (GL_PROJECTION);
-      glPushMatrix();
-
-      GLdouble projmat[16];
-      glGetDoublev (GL_PROJECTION_MATRIX, projmat);
-
-      glLoadIdentity();
-      gluPickMatrix (px, viewport[3] - py, 1, 1, viewport);
-      glMultMatrixd (projmat);
-
-
-
-      glClearColor(backcolor, backcolor, backcolor, 1.0);
-      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-      glMatrixMode (GL_MODELVIEW);
-
-      glPushMatrix();
-      glMultMatrixf (transformationmat);
-
-
-      //  SetClippingPlane();
-
-      glInitNames();
-      glPushName (1);
-
-      glPolygonOffset (1, 1);
-      glEnable (GL_POLYGON_OFFSET_FILL);
-
-      glDisable(GL_CLIP_PLANE0);
-
-      if (vispar.clipenable)
-      {
-      Vec<3> n(clipplane[0], clipplane[1], clipplane[2]);
-      double len = Abs(n);
-      double mu = -clipplane[3] / (len*len);
-      Point<3> p (mu * n);
-      n /= len;
-      Vec<3> t1 = n.GetNormal ();
-      Vec<3> t2 = Cross (n, t1);
-
-      double xi1mid = (center - p) * t1;
-      double xi2mid = (center - p) * t2;
-
-      glLoadName (0);
-      glBegin (GL_QUADS);
-      glVertex3dv (p + (xi1mid-rad) * t1 + (xi2mid-rad) * t2);
-      glVertex3dv (p + (xi1mid+rad) * t1 + (xi2mid-rad) * t2);
-      glVertex3dv (p + (xi1mid+rad) * t1 + (xi2mid+rad) * t2);
-      glVertex3dv (p + (xi1mid-rad) * t1 + (xi2mid+rad) * t2);
-      glEnd ();
   }
 
-      //  SetClippingPlane();
-
-      glCallList (filledlist);
-
-      glDisable (GL_POLYGON_OFFSET_FILL);
-
-      glPopName();
-
-      glMatrixMode (GL_PROJECTION);
-      glPopMatrix();
-
-      glMatrixMode (GL_MODELVIEW);
-      glPopMatrix();
-
-      glFlush();
-
-
-      hits = glRenderMode (GL_RENDER);
-
-      //  cout << "hits = " << hits << endl;
-
-      int minname = 0;
-      GLuint mindepth = 0;
-
-      // find clippingplane
-      GLuint clipdepth = 0; // GLuint(-1);
-
-      for (i = 0; i < hits; i++)
-      {
-      int curname = selbuf[4*i+3];
-      if (!curname) clipdepth = selbuf[4*i+1];
-      }
-
-      for (i = 0; i < hits; i++)
-      {
-      int curname = selbuf[4*i+3];
-      GLuint curdepth = selbuf[4*i+1];
-
-      if (curname && (curdepth > clipdepth) &&
-      (curdepth < mindepth || !minname))
-      {
-      mindepth = curdepth;
-      minname = curname;
-      }
-      }
-
-      seledge = -1;
-      if (minname)
-      {
-      const Element2d & sel = mesh->SurfaceElement(minname);
-
-
-      cout << "select element " << minname
-      << " on face " << sel.GetIndex() << endl;
-      cout << "Nodes: ";
-      for (i = 1; i <= sel.GetNP(); i++)
-      cout << sel.PNum(i) << " ";
-      cout << endl;
-
-      selelement = minname;
-      selface = mesh->SurfaceElement(minname).GetIndex();
-
-      locpi = (locpi % sel.GetNP()) + 1;
-      selpoint2 = selpoint;
-      selpoint = sel.PNum(locpi);
-      cout << "selected point " << selpoint
-      << ", pos = " << mesh->Point (selpoint)
-      << endl;
-
-      for (i = 1; i <= mesh->GetNSeg(); i++)
-      {
-      const Segment & seg = mesh->LineSegment(i);
-      if (seg[0] == selpoint && seg[1] == selpoint2 ||
-      seg[1] == selpoint && seg[0] == selpoint2)
-      {
-      seledge = seg.edgenr;
-      cout << "seledge = " << seledge << endl;
-      }
-      }
-
-      }
-      else
-      {
-      selface = -1;
-      selelement = -1;
-      selpoint = -1;
-      selpoint2 = -1;
-      }
-
-      glDisable(GL_CLIP_PLANE0);
-
-      selecttimestamp = NextTimeStamp();
-    */
-
-  }
-
-
-
-
-
-  void MouseDblClickSelect (const int px, const int py,
-			    const GLdouble * clipplane, const GLdouble backcolor,
-			    const double * transformationmat,
-			    const Point3d & center,
-			    const double rad,
-			    const int displaylist,
-			    int & selelement, int & selface, int & seledge, PointIndex & selpoint,
-			    PointIndex & selpoint2, int & locpi)
-  {
-    auto mesh = vsmesh.GetMesh();
-
-    int i, hits;
-
-    // select surface triangle by mouse click
-
-    GLuint selbuf[10000];
-    glSelectBuffer (10000, selbuf);
-
-
-    glRenderMode (GL_SELECT);
-
-    GLint viewport[4];
-    glGetIntegerv (GL_VIEWPORT, viewport);
-
-
-    glMatrixMode (GL_PROJECTION);
-    glPushMatrix();
-
-    GLdouble projmat[16];
-    glGetDoublev (GL_PROJECTION_MATRIX, projmat);
-
-    glLoadIdentity();
-    gluPickMatrix (px, viewport[3] - py, 1, 1, viewport);
-    glMultMatrixd (projmat);
-
-
-
-    glClearColor(backcolor, backcolor, backcolor, 1.0);
-    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-    glMatrixMode (GL_MODELVIEW);
-
-    glPushMatrix();
-    glMultMatrixd (transformationmat);
-
-
-    //  SetClippingPlane();
-
-    glInitNames();
-    glPushName (1);
-
-    glPolygonOffset (1, 1);
-    glEnable (GL_POLYGON_OFFSET_FILL);
-
-    glDisable(GL_CLIP_PLANE0);
-
-    if (vispar.clipping.enable)
-      {
-        glEnable(GL_CLIP_PLANE0);
-	Vec<3> n(clipplane[0], clipplane[1], clipplane[2]);
-	double len = Abs(n);
-	double mu = -clipplane[3] / (len*len);
-	Point<3> p (mu * n);
-	n /= len;
-	Vec<3> t1 = n.GetNormal ();
-	Vec<3> t2 = Cross (n, t1);
-
-	double xi1mid = (center - p) * t1;
-	double xi2mid = (center - p) * t2;
-
-	glLoadName (0);
-	glBegin (GL_QUADS);
-	glVertex3dv (p + (xi1mid-rad) * t1 + (xi2mid-rad) * t2);
-	glVertex3dv (p + (xi1mid+rad) * t1 + (xi2mid-rad) * t2);
-	glVertex3dv (p + (xi1mid+rad) * t1 + (xi2mid+rad) * t2);
-	glVertex3dv (p + (xi1mid-rad) * t1 + (xi2mid+rad) * t2);
-	glEnd ();
-      }
-
-    //  SetClippingPlane();
-    glCallList (displaylist);
-
-    glDisable (GL_POLYGON_OFFSET_FILL);
-
-    glPopName();
-
-    glMatrixMode (GL_PROJECTION);
-    glPopMatrix();
-
-    glMatrixMode (GL_MODELVIEW);
-    glPopMatrix();
-
-    glFlush();
-
-
-    hits = glRenderMode (GL_RENDER);
-    //cout << "hits = " << hits << endl;
-
-    int minname = 0;
-    GLuint mindepth = 0;
-
-    // find clippingplane
-    GLuint clipdepth = 0; // GLuint(-1);
-
-    for (i = 0; i < hits; i++)
-      {
-	int curname = selbuf[4*i+3];
-	if (!curname) clipdepth = selbuf[4*i+1];
-      }
-
-    for (i = 0; i < hits; i++)
-      {
-	int curname = selbuf[4*i+3];
-	GLuint curdepth = selbuf[4*i+1];
-	/*
-	  cout << selbuf[4*i] << " " << selbuf[4*i+1] << " "
-	  << selbuf[4*i+2] << " " << selbuf[4*i+3] << endl;
-	*/
-	if (curname && (curdepth > clipdepth) &&
-            (curdepth < mindepth || !minname))
-	  {
-            mindepth = curdepth;
-            minname = curname;
-	  }
-      }
-
-    seledge = -1;
-    if (minname)
-      {
-	const Element2d & sel = mesh->SurfaceElement(minname);
-
-	selelement = minname;
-	selface = mesh->SurfaceElement(minname).GetIndex();
-
-	locpi = (locpi % sel.GetNP()) + 1;
-	selpoint2 = selpoint;
-	selpoint = sel.PNum(locpi);
-
-	for (i = 1; i <= mesh->GetNSeg(); i++)
-	  {
-            const Segment & seg = mesh->LineSegment(i);
-            if ( (seg[0] == selpoint && seg[1] == selpoint2) ||
-		 (seg[1] == selpoint && seg[0] == selpoint2) )
-	      {
-		seledge = seg.edgenr;
-	      }
-	  }
-      }
-    else
-      {
-	selface = -1;
-	selelement = -1;
-	selpoint = -1;
-	selpoint2 = -1;
-      }
-
-    glDisable(GL_CLIP_PLANE0);
-
-
-
-#ifdef PARALLELGL
-    vsmesh.Broadcast ();
-#endif
-  }
 
 
   void VisualSceneMesh :: SetSelectedFace (int asf)
   {
+    if(selface != asf)
+      filledlist = 0;
     selface = asf;
-    selecttimestamp = NextTimeStamp();
   }
 
 

libsrc/visualization/vssolution.cpp

@@ -4806,8 +4806,15 @@ namespace netgen
           }
       };
 
-    // Check if clipping plane is drawn at current mouse cursor position
+    Point<3> p;
-    if(dim==3 && clipsolution && vispar.clipping.enable)
+    bool found_point = vsmesh.SelectSurfaceElement(px, py, p, showclipsolution && clipsolution);
+    if(!found_point)
+        return;
+
+    // marker = p;
+
+    // found point on clipping plane
+    if(selelement==0)
     {
       GLint viewport[4];
       GLdouble projection[16];
@@ -4815,33 +4822,26 @@ namespace netgen
 
       glGetIntegerv(GL_VIEWPORT, &viewport[0]);
 
-        int hy = viewport[3]-py;
-
-        // manually intersect the view vector with the clipping plane (also working if clipping vectors are shown)
-        Point<3> p_clipping_plane;
-        gluUnProject(px, hy, 1.0, transformationmat, projection, viewport,
-            &p_clipping_plane[0], &p_clipping_plane[1], &p_clipping_plane[2]);
-
       Point<3> eye;
       gluUnProject( (viewport[2]-viewport[0])/2 , (viewport[3]-viewport[1])/2,
           0.0, transformationmat, projection, viewport, &eye[0], &eye[1], &eye[2]);
 
       Vec<3> n{vispar.clipping.normal};
       n.Normalize();
-        Vec<3> view = p_clipping_plane-eye;
+      Vec<3> view = p-eye;
 
       // check if we look at the clipping plane from the right direction
       if(n*view > 1e-8)
       {
         double lam = vispar.clipping.dist - Vec<3>{eye}*n;
         lam /= n*view;
-            p_clipping_plane = eye + lam*view;
+        p = eye + lam*view;
 
         double lami[3];
-            if(auto el3d = mesh->GetElementOfPoint( p_clipping_plane, lami ))
+        if(auto el3d = mesh->GetElementOfPoint( p, lami ))
         {
-                cout << endl << "Selected point " << p_clipping_plane << " on clipping plane" << endl;
+          cout << endl << "Selected point " << p << " on clipping plane" << endl;
-                marker = p_clipping_plane;
+          // marker = p;
 
           bool have_scal_func = scalfunction!=-1 && soldata[scalfunction]->draw_volume;
           bool have_vec_func = vecfunction!=-1 && soldata[vecfunction]->draw_volume;
@@ -4875,22 +4875,10 @@ namespace netgen
       }
     }
 
-    // no point on clipping plane found -> continue searching for surface element
-
-    Point<3> p;
-    bool found_point = vsmesh.Unproject(px, py, p);
-    if(!found_point)
-        return;
-
-    marker = p;
-
-    if(selelement<=0)
-        return;
-
     double lami[3] = {0.0, 0.0, 0.0};
     // Check if unprojected Point is close to surface element (eps of 1e-3 due to z-Buffer accuracy)
     bool found_2del = false;
-    if(mesh->PointContainedIn2DElement(p, lami, selelement, false && fabs(lami[2])<1e-3))
+    if(selelement>0 && mesh->PointContainedIn2DElement(p, lami, selelement, false && fabs(lami[2])<1e-3))
       {
         // Found it, use coordinates of point projected to surface element
         mesh->GetCurvedElements().CalcSurfaceTransformation({1.0-lami[0]-lami[1], lami[0]}, selelement-1, p);

libsrc/visualization/vssolution.hpp

@@ -94,7 +94,6 @@ class NGGUI_API VisualSceneSolution : public VisualScene
   int fieldlinestimestamp, surface_vector_timestamp;
   int pointcurve_timestamp;
   int isosurface_timestamp;
-  int subdivision_timestamp;
   int timetimestamp;
   double minval, maxval;
 
@@ -174,7 +173,6 @@ public:
   int autoscale, logscale;
   double mminval, mmaxval;
   int numisolines;
-  int subdivisions;
 
   bool showclipsolution;
   bool showsurfacesolution;