glemon-0.x: broken_edge.cc@eedecee61922

     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       // 	}

    60       //////////////////////////////////////////////////////////////////////////////////////////////////////

    61       /////////// kepps shape-with angles

    62       //////////////////////////////////////////////////////////////////////////////////////////////////////

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

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

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

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

    69 //       //length of p2p vector

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

    71 //       if(o_p2p.x<0)

    72 // 	{

    73 // 	  o_l_p2p*=-1;

    74 // 	}

    75 //       //length of projection of p2p vector

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

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

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

    79 //       if(o_p2p.y>0)

    80 // 	{

    81 // 	  o_a_p2p=2*M_PI-o_a_p2p;

    82 // 	}

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

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

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

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

    88 //       //length of 1b vector

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

    90 //       if(o_1b.x<0)

    91 // 	{

    92 // 	  o_l_1b*=-1;

    93 // 	}

    94 //       //length of projection of 1b vector

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

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

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

    98 //       if(o_1b.y>0)

    99 // 	{

   100 // 	  o_a_1b=2*M_PI-o_a_1b;

   101 // 	}

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

   104 //       	{

   105 // 	  set_arrow=true;

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

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

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

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

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

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

   114 // 	  //length of p2p vector

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

   116 // 	  if(n_p2p.x<0)

   117 // 	    {

   118 // 	      n_l_p2p*=-1;

   119 // 	    }

   120 // 	  //length of projection of p2p vector

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

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

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

   124 // 	  if(n_p2p.y>0)

   125 // 	    {

   126 // 	      n_a_p2p=2*M_PI-n_a_p2p;

   127 // 	    }

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

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

   132 // 	  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;

   133 // 	  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;

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

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

   138 // 	    {

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

   140 // 	      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);

   141 // 	    }

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

   143 // 	    {

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

   145 // 	      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);

   146 // 	    }

   147 // 	  else

   148 // 	    {

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

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

   151 // 	      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);

   152 // 	    }

   154 // 	  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;

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

   158 // // 	    {

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

   160 // // 		{

   161 // // 		  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);

   162 // // 		}

   163 // // 	      else

   164 // // 		{

   165 // // 		  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);

   166 // // 		}

   167 // // 	    }

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

   169 // // 	    {

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

   171 // // 		{

   172 // // 		  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);

   173 // // 		}

   174 // // 	      else

   175 // // 		{

   176 // // 		  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);

   177 // // 		}

   178 // // 	    }

   179 // // 	  else

   180 // // 	    {

   181 // // 	    }

   183       //////////////////////////////////////////////////////////////////////////////////////////////////////

   184       /////////// kepps shape-with scalar multiplication

   185       //////////////////////////////////////////////////////////////////////////////////////////////////////

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

   188       	{

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

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

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

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

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

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

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

   198 	  xy<double> d_v;

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

   201 	  double sab=a_v*b_v;

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

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

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

   207 	  double a=c_v.normSquare();

   208 	  double b=2*scd*c_v.y;

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

   211 	  std::cout<<" a " << a<<" b " <<b<<" c " <<c<<std::endl;

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

   215 	  if(c_v.x!=0)

   216 	    {

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

   218 	    }

   219 	  else

   220 	    {

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

   222 	    }

   224 	  std::cout<<" d " << d_v<<std::endl;

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

   228 	  Gnome::Canvas::Points points;

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

   230 	    {

   231 	      points.push_back(my_points[i]);

   232 	    }

   233 	  property_points().set_value(points);

   234 	}

   235     }

   236   if(set_arrow)

   237     {

   238       //calculating coordinates of the direction indicator arrow

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

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

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

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

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

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

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

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

   251       {

   252 	//       /\       // top

   253 	//      /  \      //

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

   255 	//       ||       //

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

   257       }

   259       double size=3;

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

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

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

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

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

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

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

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

   271       Gnome::Canvas::Points arrow_points;

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

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

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

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

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

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

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

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

   281     }

   282 }

   284 bool BrokenEdge::edgeFormerEventHandler(GdkEvent* e)

   285 {

   286   switch(e->type)

   287     {

   288     case GDK_BUTTON_PRESS:

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

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

   291 	{

   292 	  gdc.toggleEdgeActivity(this, true);

   293 	  clicked_x=e->button.x;

   294 	  clicked_y=e->button.y;

   295 	  isbutton=true;

   296 	}

   297       break;

   298     case GDK_BUTTON_RELEASE:

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

   300 	{

   301 	  gdc.toggleEdgeActivity(this, false);

   302 	  isbutton=false;

   303 	}

   304       break;

   305     case GDK_MOTION_NOTIFY:

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

   307       if(isbutton)

   308 	{

   309 	  //new coordinates will be the old values,

   310 	  //because the item will be moved to the

   311 	  //new coordinate therefore the new movement

   312 	  //has to be calculated from here

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

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

   317 	  Gnome::Canvas::Points points_new;

   319 	  points_new.push_back(my_points[0]);

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

   321 	  points_new.push_back(my_points[2]);

   323 	  setPoints(points_new);

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

   326 	  clicked_x=e->motion.x;

   327 	  clicked_y=e->motion.y;

   329 	}

   330     default: break;

   331     }

   333   return true;

   334 }

   336 xy<double> BrokenEdge::getArrowPos()

   337 {

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

   339   return ret_val;

   340 }

author	hegyi
	Thu, 28 Jul 2005 17:01:40 +0000
branch	gui
changeset 50	eedecee61922
parent 30	f70bbee5350a
child 51	25405e400292
permissions	-rw-r--r--