COIN-OR::LEMON - Graph Library

Changeset 147:10ef59f6633c in glemon-0.x for gdc-broken_edge.cc


Ignore:
Timestamp:
09/13/06 11:16:29 (13 years ago)
Author:
Akos Ladanyi
Branch:
default
Phase:
public
Convert:
svn:c9d7d8f5-90d6-0310-b91f-818b3a526b0e/glemon/trunk@2943
Message:

Loop edges.

File:
1 edited

Legend:

Unmodified
Added
Removed
  • gdc-broken_edge.cc

    r98 r147  
    22#include <cmath>
    33
    4 GraphDisplayerCanvas::BrokenEdge::BrokenEdge(Gnome::Canvas::Group & g, Edge _edge, GraphDisplayerCanvas & gc) : Line(g), edge(_edge), gdc(gc), isbutton(false)
    5 {
    6   arrow=new Gnome::Canvas::Polygon(g);
    7   *arrow << Gnome::Canvas::Properties::fill_color("red");
    8   arrow->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::BrokenEdge::edgeFormerEventHandler));
    9   arrow->lower_to_bottom();
     4GraphDisplayerCanvas::EdgeBase::EdgeBase(Gnome::Canvas::Group& _group, Edge _edge, GraphDisplayerCanvas& _canvas) :
     5  Gnome::Canvas::Group(_group), edge(_edge), canvas(_canvas), arrow(*this)
     6{
     7  arrow.property_fill_color().set_value("red");
     8  arrow.lower_to_bottom();
     9}
     10
     11GraphDisplayerCanvas::EdgeBase::~EdgeBase()
     12{
     13}
     14
     15void GraphDisplayerCanvas::EdgeBase::drawArrow(XY unit_vector_in_dir)
     16{
     17  MapStorage& ms = canvas.mytab.mapstorage;
     18  XY center(ms.arrow_pos[edge]);
     19  XY unit_norm_vector(0-unit_vector_in_dir.y, unit_vector_in_dir.x);
     20
     21  //       /\       // top
     22  //      /  \      //
     23  //      -  -      // c(enter)l(eft), ccl, ccr, cr
     24  //       ||       //
     25  //       ||       // b(ottom)l, br
     26
     27  double size=3;
     28
     29  XY bl (center - unit_vector_in_dir * 3 * size + unit_norm_vector * size );
     30  XY br (center - unit_vector_in_dir * 3 * size - unit_norm_vector * size );
     31  XY ccl(center + unit_vector_in_dir *  size + unit_norm_vector * size );
     32  XY ccr(center + unit_vector_in_dir *  size - unit_norm_vector * size );
     33  XY cl (center + unit_vector_in_dir *  size + unit_norm_vector * 2 * size );
     34  XY cr (center + unit_vector_in_dir *  size - unit_norm_vector * 2 * size );
     35  XY top(center + unit_vector_in_dir * 3 * size);
     36
     37  Gnome::Canvas::Points arrow_points;
     38  arrow_points.push_back(Gnome::Art::Point( bl.x , bl.y  ) );
     39  arrow_points.push_back(Gnome::Art::Point( br.x , br.y  ) );
     40  arrow_points.push_back(Gnome::Art::Point( ccr.x, ccr.y ) );
     41  arrow_points.push_back(Gnome::Art::Point( cr.x , cr.y  ) );
     42  arrow_points.push_back(Gnome::Art::Point( top.x, top.y ) );
     43  arrow_points.push_back(Gnome::Art::Point( cl.x , cl.y  ) );
     44  arrow_points.push_back(Gnome::Art::Point( ccl.x, ccl.y ) );
     45
     46  arrow.property_points().set_value(arrow_points);
     47}
     48
     49GraphDisplayerCanvas::BrokenEdge::BrokenEdge(Gnome::Canvas::Group & g,
     50    Edge _edge, GraphDisplayerCanvas & gc) : EdgeBase(g, _edge, gc),
     51  isbutton(false), line(*this)
     52{
     53  arrow.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::BrokenEdge::edgeFormerEventHandler));
     54
     55  line.property_fill_color().set_value("green");
     56  line.property_width_units().set_value(10);   
     57  line.lower_to_bottom();
     58
    1059  draw();
    1160}
     
    1362GraphDisplayerCanvas::BrokenEdge::~BrokenEdge()
    1463{
    15   if(arrow)delete(arrow);
    1664}
    1765
    1866void GraphDisplayerCanvas::BrokenEdge::draw()
    1967{
    20   MapStorage& ms = gdc.mytab.mapstorage;
     68  MapStorage& ms = canvas.mytab.mapstorage;
     69
     70  //calculating coordinates of the direction indicator arrow
     71  XY head(ms.coords[ms.graph.target(edge)]);
     72  XY center(ms.arrow_pos[edge]);
     73
     74  XY unit_vector_in_dir(head-center);
     75  double length=sqrt( unit_vector_in_dir.normSquare() );
     76
     77  unit_vector_in_dir/=length;
     78
     79  // update the arrow
     80  drawArrow(unit_vector_in_dir);
    2181
    2282  // update the edge
     83  Gnome::Canvas::Points points;
     84  Node source = ms.graph.source(edge);
     85  Node target = ms.graph.target(edge);
     86  points.push_back(Gnome::Art::Point(ms.coords[source].x,
     87        ms.coords[source].y));
     88  points.push_back(Gnome::Art::Point(ms.arrow_pos[edge].x,
     89        ms.arrow_pos[edge].y));
     90  points.push_back(Gnome::Art::Point(ms.coords[target].x,
     91        ms.coords[target].y));
     92  line.property_points().set_value(points);
     93}
     94
     95bool GraphDisplayerCanvas::BrokenEdge::edgeFormerEventHandler(GdkEvent* e)
     96{
     97  switch(e->type)
    2398  {
    24     Gnome::Canvas::Points points;
    25     Node source = ms.graph.source(edge);
    26     Node target = ms.graph.target(edge);
    27     points.push_back(Gnome::Art::Point(ms.coords[source].x,
    28           ms.coords[source].y));
    29     points.push_back(Gnome::Art::Point(ms.arrow_pos[edge].x,
    30           ms.arrow_pos[edge].y));
    31     points.push_back(Gnome::Art::Point(ms.coords[target].x,
    32           ms.coords[target].y));
    33     property_points().set_value(points);
    34   }
    35 
    36   // update the arrow
    37   {
    38     //calculating coordinates of the direction indicator arrow
    39     XY target(ms.coords[ms.graph.target(edge)]);
    40     XY center(ms.arrow_pos[edge]);
    41 
    42     XY unit_vector_in_dir(target-center);
    43     double length=sqrt( unit_vector_in_dir.normSquare() );
    44 
    45     //       std::cout << target << " - " << center << " = " << unit_vector_in_dir << "    / " <<unit_vector_in_dir.normSquare() ;
    46     unit_vector_in_dir/=length;
    47     //       std::cout << " = " << unit_vector_in_dir << std::endl;
    48 
    49     XY unit_norm_vector(0-unit_vector_in_dir.y, unit_vector_in_dir.x);
    50     //       std::cout << unit_norm_vector << std::endl;
    51 
    52     {     
    53       //       /\       // top
    54       //      /  \      //
    55       //      -  -      // c(enter)l(eft), ccl, ccr, cr
    56       //       ||       //
    57       //       ||       // b(ottom)l, br
    58     }
    59 
    60     double size=3;
    61 
    62     XY bl (center - unit_vector_in_dir * 3 * size + unit_norm_vector * size );
    63     XY br (center - unit_vector_in_dir * 3 * size - unit_norm_vector * size );
    64     XY ccl(center + unit_vector_in_dir *  size + unit_norm_vector * size );
    65     XY ccr(center + unit_vector_in_dir *  size - unit_norm_vector * size );
    66     XY cl (center + unit_vector_in_dir *  size + unit_norm_vector * 2 * size );
    67     XY cr (center + unit_vector_in_dir *  size - unit_norm_vector * 2 * size );
    68     XY top(center + unit_vector_in_dir * 3 * size);
    69 
    70     //std::cout << bl << " " << br << " " << ccl << " "  << ccr << " " << cl << " " << cr << " " << top << std::endl;
    71 
    72     Gnome::Canvas::Points arrow_points;
    73     arrow_points.push_back(Gnome::Art::Point( bl.x , bl.y  ) );
    74     arrow_points.push_back(Gnome::Art::Point( br.x , br.y  ) );
    75     arrow_points.push_back(Gnome::Art::Point( ccr.x, ccr.y ) );
    76     arrow_points.push_back(Gnome::Art::Point( cr.x , cr.y  ) );
    77     arrow_points.push_back(Gnome::Art::Point( top.x, top.y ) );
    78     arrow_points.push_back(Gnome::Art::Point( cl.x , cl.y  ) );
    79     arrow_points.push_back(Gnome::Art::Point( ccl.x, ccl.y ) );
    80 
    81     arrow->property_points().set_value(arrow_points);
    82   }
    83 }
    84 
    85 bool GraphDisplayerCanvas::BrokenEdge::edgeFormerEventHandler(GdkEvent* e)
    86 {
    87   switch(e->type)
    88     {
    8999    case GDK_BUTTON_PRESS:
    90       //we mark the location of the event to be able to calculate parameters of dragging
    91       if(gdc.getActualTool()!=CREATE_NODE)
    92         {
    93           gdc.toggleEdgeActivity(this, true);
    94           clicked_x=e->button.x;
    95           clicked_y=e->button.y;
    96           isbutton=true;
    97         }
     100      //we mark the location of the event to be able to calculate parameters
     101      //of dragging
     102      if(canvas.getActualTool()!=CREATE_NODE)
     103      {
     104        canvas.toggleEdgeActivity(this, true);
     105        clicked_x=e->button.x;
     106        clicked_y=e->button.y;
     107        isbutton=true;
     108      }
    98109      break;
    99110    case GDK_BUTTON_RELEASE:
    100       if(gdc.getActualTool()!=CREATE_NODE)
    101         {
    102           gdc.toggleEdgeActivity(this, false);
    103           isbutton=false;
    104         }
     111      if(canvas.getActualTool()!=CREATE_NODE)
     112      {
     113        canvas.toggleEdgeActivity(this, false);
     114        isbutton=false;
     115      }
    105116      break;
    106117    case GDK_MOTION_NOTIFY:
    107118      //we only have to do sg. if the mouse button is pressed
    108119      if(isbutton)
    109         {
    110           //new coordinates will be the old values,
    111           //because the item will be moved to the
    112           //new coordinate therefore the new movement
    113           //has to be calculated from here
    114 
    115           double dx=e->motion.x-clicked_x;
    116           double dy=e->motion.y-clicked_y;
    117 
    118           Gnome::Canvas::Points points_new;
    119 
    120           gdc.mytab.mapstorage.arrow_pos.set(edge, gdc.mytab.mapstorage.arrow_pos[edge] + XY(dx, dy));
    121 
    122           draw();
    123           gdc.textReposition(gdc.mytab.mapstorage.arrow_pos[edge]);
    124 
    125           clicked_x=e->motion.x;
    126           clicked_y=e->motion.y;
    127 
    128         }
     120      {
     121        //new coordinates will be the old values,
     122        //because the item will be moved to the
     123        //new coordinate therefore the new movement
     124        //has to be calculated from here
     125
     126        double dx=e->motion.x-clicked_x;
     127        double dy=e->motion.y-clicked_y;
     128
     129        Gnome::Canvas::Points points_new;
     130
     131        canvas.mytab.mapstorage.arrow_pos.set(edge, canvas.mytab.mapstorage.arrow_pos[edge] + XY(dx, dy));
     132
     133        draw();
     134        canvas.textReposition(canvas.mytab.mapstorage.arrow_pos[edge]);
     135
     136        clicked_x=e->motion.x;
     137        clicked_y=e->motion.y;
     138
     139      }
    129140    default: break;
    130     }
     141  }
    131142
    132143  return true;
    133144}
     145
     146void GraphDisplayerCanvas::BrokenEdge::setLineWidth(int w)
     147{
     148  line.property_width_units().set_value(w);
     149}
     150
     151void GraphDisplayerCanvas::BrokenEdge::setFillColor(Gdk::Color c)
     152{
     153  line.property_fill_color_gdk().set_value(c);
     154}
     155
     156GraphDisplayerCanvas::LoopEdge::LoopEdge(Gnome::Canvas::Group& _group,
     157    Edge _edge, GraphDisplayerCanvas& _canvas) :
     158  EdgeBase(_group, _edge, _canvas), line(*this)
     159{
     160  line.property_fill_color().set_value("green");
     161  line.property_width_units().set_value(10);   
     162  line.lower_to_bottom();
     163
     164  draw();
     165}
     166
     167GraphDisplayerCanvas::LoopEdge::~LoopEdge()
     168{
     169}
     170
     171void GraphDisplayerCanvas::LoopEdge::draw()
     172{
     173  MapStorage& ms = canvas.mytab.mapstorage;
     174
     175  Node node = ms.graph.source(edge);
     176  XY center = (ms.coords[node] + ms.arrow_pos[edge]) / 2.0;
     177
     178  XY unit_vector_in_dir(rot90(center - ms.arrow_pos[edge]));
     179  double length = sqrt(unit_vector_in_dir.normSquare());
     180  unit_vector_in_dir /= length;
     181
     182  drawArrow(unit_vector_in_dir);
     183
     184  double radius =
     185    sqrt((ms.arrow_pos[edge] - ms.coords[node]).normSquare()) / 2.0;
     186
     187  XY p1 = center + XY(-radius,  radius);
     188  XY p2 = center + XY( radius, -radius);
     189  line.property_x1().set_value(p1.x);
     190  line.property_y1().set_value(p1.y);
     191  line.property_x2().set_value(p2.x);
     192  line.property_y2().set_value(p2.y);
     193}
     194
     195void GraphDisplayerCanvas::LoopEdge::setLineWidth(int w)
     196{
     197  line.property_width_units().set_value(w);
     198}
     199
     200void GraphDisplayerCanvas::LoopEdge::setFillColor(Gdk::Color c)
     201{
     202  line.property_fill_color_gdk().set_value(c);
     203}
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