glemon-0.x: broken_edge.cc@ddd2ee3406e6

     1 #include <broken_edge.h>

     2 #include <math.h>

     4 BrokenEdge::BrokenEdge(Gnome::Canvas::Group & g, Gnome::Canvas::Points p, GraphDisplayerCanvas & gc) : Line(g), gdc(gc), isbutton(false)

5 {

     6   my_points=new Gnome::Art::Point[3];

     8   arrow=new Gnome::Canvas::Polygon(g);

     9   *arrow << Gnome::Canvas::Properties::fill_color("red");

    10   arrow->signal_event().connect(sigc::mem_fun(*this, &BrokenEdge::edgeFormerEventHandler));

    11   setPoints(p);

    12 }

    14 BrokenEdge::~BrokenEdge()

    15 {

    16   if(arrow)delete(arrow);

    17 }

    19 void BrokenEdge::setPoints(Gnome::Canvas::Points p, bool move)

    20 {

    21   bool set_arrow=false;

    22   //red arrow losts its position-right button

    23   if(!move)

    24     {

    25       if(p.size()==2)

    26 	{

    27 	  set_arrow=true;

    28 	  Gnome::Canvas::Points points_with_center;

    29 	  points_with_center.push_back(my_points[0]=p[0]);

    30 	  points_with_center.push_back(my_points[1]=Gnome::Art::Point( (p[0].get_x()+p[1].get_x())/2+0 , (p[0].get_y()+p[1].get_y())/2 )+0 );

    31 	  points_with_center.push_back(my_points[2]=p[1]);

    32 	  property_points().set_value(points_with_center);

    33 	}

    34       if(p.size()==3)

    35 	{

    36 	  set_arrow=true;

    37 	  property_points().set_value(p);

    38 	  for(int i=0;i<3;i++)

    39 	    {

    40 	      my_points[i]=p[i];

    41 	    }

    42 	}

    43     }

    44   else

    45     {

    46       //arrow keeps its position-left button

    48       if(p.size()==2)

    49       	{

    50       	  Gnome::Canvas::Points points;

    51       	  my_points[0]=p[0];

    52       	  my_points[2]=p[1];

    53       	  for(int i=0;i<3;i++)

    54       	    {

    55       	      points.push_back(my_points[i]);

    56       	    }

    57       	  property_points().set_value(points);

    58       	}

    59       set_arrow=true;

    61       //////////////////////////////////////////////////////////////////////////////////////////////////////

    62       /////////// kepps shape-with angles

    63       //////////////////////////////////////////////////////////////////////////////////////////////////////

    66 //       //old vector from one to the other node

    67 //       xy<double> o_p2p(my_points[2].get_x()-my_points[0].get_x(),my_points[2].get_y()-my_points[0].get_y());

    68 //       //projection of the old vector to positive x axis

    69 //       xy<double> o_x_p2p(fabs(o_p2p.x),0);

    70 //       //length of p2p vector

    71 //       double o_l_p2p=sqrt( o_p2p.normSquare() );

    72 //       if(o_p2p.x<0)

    73 // 	{

    74 // 	  o_l_p2p*=-1;

    75 // 	}

    76 //       //length of projection of p2p vector

    77 //       double o_l_x_p2p=sqrt( o_x_p2p.normSquare() );

    78 //       //old angle of p2p vector to the x axis

    79 //       double o_a_p2p=acos(o_l_x_p2p/o_l_p2p);

    80 //       if(o_p2p.y>0)

    81 // 	{

    82 // 	  o_a_p2p=2*M_PI-o_a_p2p;

    83 // 	}

    85 //       //old vector from first node to the breakpoint

    86 //       xy<double> o_1b((my_points[1].get_x()-my_points[0].get_x()),(my_points[1].get_y()-my_points[0].get_y()));

    87 //       //projection of the old node-breakpoint vector to positive x axis

    88 //       xy<double> o_x_1b(fabs(o_1b.x),0);

    89 //       //length of 1b vector

    90 //       double o_l_1b=sqrt( o_1b.normSquare() );

    91 //       if(o_1b.x<0)

    92 // 	{

    93 // 	  o_l_1b*=-1;

    94 // 	}

    95 //       //length of projection of 1b vector

    96 //       double o_l_x_1b=sqrt( o_x_1b.normSquare() );

    97 //       //old angle of 1b vector to the x axis

    98 //       double o_a_1b=acos(o_l_x_1b/o_l_1b);

    99 //       if(o_1b.y>0)

   100 // 	{

   101 // 	  o_a_1b=2*M_PI-o_a_1b;

   102 // 	}

   104 //       if(p.size()==2)

   105 //       	{

   106 // 	  set_arrow=true;

   108 //       	  my_points[0]=p[0];

   109 //       	  my_points[2]=p[1];

   111 // 	  //new vector from one to the other node

   112 // 	  xy<double> n_p2p(my_points[2].get_x()-my_points[0].get_x(),my_points[2].get_y()-my_points[0].get_y());

   113 // 	  //projection of the new vector to positive x axis

   114 // 	  xy<double> n_x_p2p(fabs(n_p2p.x),0);

   115 // 	  //length of p2p vector

   116 // 	  double n_l_p2p=sqrt( n_p2p.normSquare() );

   117 // 	  if(n_p2p.x<0)

   118 // 	    {

   119 // 	      n_l_p2p*=-1;

   120 // 	    }

   121 // 	  //length of projection of p2p vector

   122 // 	  double n_l_x_p2p=sqrt( n_x_p2p.normSquare() );

   123 // 	  //new angle of p2p vector to the x axis

   124 // 	  double n_a_p2p=acos(n_l_x_p2p/n_l_p2p);

   125 // 	  if(n_p2p.y>0)

   126 // 	    {

   127 // 	      n_a_p2p=2*M_PI-n_a_p2p;

   128 // 	    }

   130 // 	  //new angle of 1b vector to the x axis

   131 // 	  double n_a_1b=o_a_1b+n_a_p2p-o_a_p2p;

   133 // 	  std::cout << " p2p regi: " << o_a_p2p/M_PI*180 << " uj: " << n_a_p2p/M_PI*180-(int)n_a_p2p/M_PI*180 << std::endl;

   134 // 	  std::cout << " 1b regi: " << o_a_1b/M_PI*180 << " uj: " << n_a_1b/M_PI*180-(int)n_a_1b/M_PI*180 << std::endl;

   136 // // 	  std::cout << o_p2p << " " << n_p2p << std::endl;

   138 // 	  if((n_a_1b>M_PI*3/2)||(n_a_1b<M_PI/2))

   139 // 	    {

   140 // 	      std::cout << "jobb terfel" << std::endl;

   141 // 	      my_points[1]=Gnome::Art::Point(p[0].get_x()+cos(n_a_1b)*o_l_1b*n_l_p2p/o_l_p2p,p[0].get_y()-sin(n_a_1b)*o_l_1b*n_l_p2p/o_l_p2p);

   142 // 	    }

   143 // 	  else if((n_a_1b<M_PI*3/2)&&(n_a_1b>M_PI/2))

   144 // 	    {

   145 // 	      std::cout << "bal terfel" << std::endl;

   146 // 	      my_points[1]=Gnome::Art::Point(p[0].get_x()-cos(n_a_1b)*o_l_1b*n_l_p2p/o_l_p2p,p[0].get_y()+sin(n_a_1b)*o_l_1b*n_l_p2p/o_l_p2p);

   147 // 	    }

   148 // 	  else

   149 // 	    {

   150 // 	      std::cout << "y tengely" << std::endl;

   151 // 	      double new_y=my_points[1].get_y();

   152 // 	      my_points[1]=Gnome::Art::Point(p[0].get_x()-cos(n_a_1b)*o_l_1b*n_l_p2p/o_l_p2p,new_y);

   153 // 	    }

   155 // 	  std::cout << "alap: " << p[0] << " eredeti hossz: " << o_l_1b << " nagy uj: " << n_l_p2p << " nagy regi: " << o_l_p2p << " a*b/c " << o_l_1b*n_l_p2p/o_l_p2p << " eredmeny: " << my_points[1] << std::endl;

   158 // // 	  if(o_1b.x*o_1b.y>0)

   159 // // 	    {

   160 // // 	      if(n_p2p.x>0)

   161 // // 		{

   162 // // 		  my_points[1]=Gnome::Art::Point(p[0].get_x()+cos(n_a_1b)*o_l_1b*n_l_p2p/o_l_p2p,p[0].get_y()+sin(n_a_1b)*o_l_1b*n_l_p2p/o_l_p2p);

   163 // // 		}

   164 // // 	      else

   165 // // 		{

   166 // // 		  my_points[1]=Gnome::Art::Point(p[0].get_x()-cos(n_a_1b)*o_l_1b*n_l_p2p/o_l_p2p,p[0].get_y()-sin(n_a_1b)*o_l_1b*n_l_p2p/o_l_p2p);

   167 // // 		}

   168 // // 	    }

   169 // // 	  else if(o_1b.x*o_1b.y<0)

   170 // // 	    {

   171 // // 	      if(n_p2p.x>0)

   172 // // 		{

   173 // // 		  my_points[1]=Gnome::Art::Point(p[0].get_x()+cos(n_a_1b)*o_l_1b*n_l_p2p/o_l_p2p,p[0].get_y()-sin(n_a_1b)*o_l_1b*n_l_p2p/o_l_p2p);

   174 // // 		}

   175 // // 	      else

   176 // // 		{

   177 // // 		  my_points[1]=Gnome::Art::Point(p[0].get_x()-cos(n_a_1b)*o_l_1b*n_l_p2p/o_l_p2p,p[0].get_y()+sin(n_a_1b)*o_l_1b*n_l_p2p/o_l_p2p);

   178 // // 		}

   179 // // 	    }

   180 // // 	  else

   181 // // 	    {

   182 // // 	    }

   184       //////////////////////////////////////////////////////////////////////////////////////////////////////

   185       /////////// kepps shape-with scalar multiplication

   186       //////////////////////////////////////////////////////////////////////////////////////////////////////

   188 //       if(p.size()==2)

   189 //       	{

   190 // 	  //old vector from one to the other node - a

   191 // 	  xy<double> a_v(my_points[2].get_x()-my_points[0].get_x(),my_points[2].get_y()-my_points[0].get_y());

   192 // 	  //new vector from one to the other node - b

   193 // 	  xy<double> b_v(p[1].get_x()-p[0].get_x(),p[1].get_y()-p[0].get_y());

   195 // 	  //old vector from one node to the breakpoint - c

   196 // 	  xy<double> c_v(my_points[1].get_x()-my_points[0].get_x(),my_points[1].get_y()-my_points[0].get_y());

   198 // 	  //new vector from one node to the breakpoint - d - we have to calculate this one

   199 // 	  xy<double> d_v;

   201 // 	  //scalar product of a and b (old and new vector from first point to the other)

   202 // 	  double sab=a_v*b_v;

   203 // 	  //scalar product of c and d (old and new vector from first point to breakpoint)

   204 // 	  double scd=sab*c_v.normSquare()/a_v.normSquare();

   206 // 	  std::cout<<" a " << a_v<<" b " <<b_v<<" c " <<c_v<<" sab " <<sab<<" scd "<<scd<<std::endl;

   208 // 	  double a=c_v.normSquare();

   209 // 	  double b=2*scd*c_v.y;

   210 // 	  double c=scd*scd-b_v.normSquare()/a_v.normSquare()*c_v.normSquare()*c_v.x*c_v.x;

   212 // 	  std::cout<<" a " << a<<" b " <<b<<" c " <<c<<std::endl;

   214 // 	  d_v.y=(-b-sqrt(b*b-4*a*c))/2/a;

   216 // 	  if(c_v.x!=0)

   217 // 	    {

   218 // 	      d_v.x=(scd-c_v.y*d_v.y)/c_v.x;

   219 // 	    }

   220 // 	  else

   221 // 	    {

   222 // 	      d_v.x=my_points[1].get_x();

   223 // 	    }

   225 // 	  std::cout<<" d " << d_v<<std::endl;

   227 // 	  my_points[1]=Gnome::Art::Point(d_v.x+p[0].get_x(),d_v.y+p[0].get_y());

   229 // 	  Gnome::Canvas::Points points;

   230 // 	  for(int i=0;i<3;i++)

   231 // 	    {

   232 // 	      points.push_back(my_points[i]);

   233 // 	    }

   234 // 	  property_points().set_value(points);

   235 // 	}

   236     }

   237   if(set_arrow)

   238     {

   239       //calculating coordinates of the direction indicator arrow

   241       xy<gdouble> target( my_points[2].get_x(), my_points[2].get_y() );

   242       xy<gdouble> center( my_points[1].get_x(), my_points[1].get_y() );

   244       xy<gdouble> unit_vector_in_dir(target-center);

   245       //       std::cout << target << " - " << center << " = " << unit_vector_in_dir << "    / " <<unit_vector_in_dir.normSquare() ;

   246       unit_vector_in_dir/=sqrt( unit_vector_in_dir.normSquare() );

   247       //       std::cout << " = " << unit_vector_in_dir << std::endl;

   249       xy<gdouble> unit_norm_vector(0-unit_vector_in_dir.y, unit_vector_in_dir.x);

   250       //       std::cout << unit_norm_vector << std::endl;

   252       {

   253 	//       /\       // top

   254 	//      /  \      //

   255 	//      -  -      // c(enter)l(eft), ccl, ccr, cr

   256 	//       ||       //

   257 	//       ||       // b(ottom)l, br

   258       }

   260       double size=3;

   262       xy<gdouble> bl (center - unit_vector_in_dir * 3 * size + unit_norm_vector * size );

   263       xy<gdouble> br (center - unit_vector_in_dir * 3 * size - unit_norm_vector * size );

   264       xy<gdouble> ccl(center + unit_vector_in_dir *  size + unit_norm_vector * size );

   265       xy<gdouble> ccr(center + unit_vector_in_dir *  size - unit_norm_vector * size );

   266       xy<gdouble> cl (center + unit_vector_in_dir *  size + unit_norm_vector * 2 * size );

   267       xy<gdouble> cr (center + unit_vector_in_dir *  size - unit_norm_vector * 2 * size );

   268       xy<gdouble> top(center + unit_vector_in_dir * 3 * size);

   270       //       std::cout << bl << " " << br << " " << ccl << " "  << ccr << " " << cl << " " << cr << " " << top << std::endl;

   272       Gnome::Canvas::Points arrow_points;

   273       arrow_points.push_back(Gnome::Art::Point( bl.x , bl.y  ) );

   274       arrow_points.push_back(Gnome::Art::Point( br.x , br.y  ) );

   275       arrow_points.push_back(Gnome::Art::Point( ccr.x, ccr.y ) );

   276       arrow_points.push_back(Gnome::Art::Point( cr.x , cr.y  ) );

   277       arrow_points.push_back(Gnome::Art::Point( top.x, top.y ) );

   278       arrow_points.push_back(Gnome::Art::Point( cl.x , cl.y  ) );

   279       arrow_points.push_back(Gnome::Art::Point( ccl.x, ccl.y ) );

   281       arrow->property_points().set_value(arrow_points);

   282     }

   283 }

   285 bool BrokenEdge::edgeFormerEventHandler(GdkEvent* e)

   286 {

   287   switch(e->type)

   288     {

   289     case GDK_BUTTON_PRESS:

   290       //we mark the location of the event to be able to calculate parameters of dragging

   291       if(gdc.getActualTool()!=CREATE_NODE)

   292 	{

   293 	  gdc.toggleEdgeActivity(this, true);

   294 	  clicked_x=e->button.x;

   295 	  clicked_y=e->button.y;

   296 	  isbutton=true;

   297 	}

   298       break;

   299     case GDK_BUTTON_RELEASE:

   300       if(gdc.getActualTool()!=CREATE_NODE)

   301 	{

   302 	  gdc.toggleEdgeActivity(this, false);

   303 	  isbutton=false;

   304 	}

   305       break;

   306     case GDK_MOTION_NOTIFY:

   307       //we only have to do sg. if the mouse button is pressed

   308       if(isbutton)

   309 	{

   310 	  //new coordinates will be the old values,

   311 	  //because the item will be moved to the

   312 	  //new coordinate therefore the new movement

   313 	  //has to be calculated from here

   315 	  double dx=e->motion.x-clicked_x;

   316 	  double dy=e->motion.y-clicked_y;

   318 	  Gnome::Canvas::Points points_new;

   320 	  points_new.push_back(my_points[0]);

   321 	  points_new.push_back(my_points[1]=Gnome::Art::Point(my_points[1].get_x()+dx,my_points[1].get_y()+dy));

   322 	  points_new.push_back(my_points[2]);

   324 	  setPoints(points_new);

   325 	  gdc.textReposition(xy<double>(my_points[1].get_x(),my_points[1].get_y()));

   327 	  clicked_x=e->motion.x;

   328 	  clicked_y=e->motion.y;

   330 	}

   331     default: break;

   332     }

   334   return true;

   335 }

   337 xy<double> BrokenEdge::getArrowPos()

   338 {

   339   xy<double> ret_val(my_points[1].get_x(),my_points[1].get_y());

   340   return ret_val;

   341 }

author	alpar
	Thu, 28 Jul 2005 19:09:39 +0000
branch	gui
changeset 52	ddd2ee3406e6
parent 50	eedecee61922
child 53	e73d7540bd24
permissions	-rw-r--r--