1.1 --- a/broken_edge.cc Thu Nov 17 15:34:18 2005 +0000
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,214 +0,0 @@
1.4 -#include "broken_edge.h"
1.5 -#include <cmath>
1.6 -
1.7 -BrokenEdge::BrokenEdge(Gnome::Canvas::Group & g, Gnome::Canvas::Points p, GraphDisplayerCanvas & gc) : Line(g), gdc(gc), isbutton(false)
1.8 -{
1.9 - my_points=new Gnome::Art::Point[3];
1.10 -
1.11 - arrow=new Gnome::Canvas::Polygon(g);
1.12 - *arrow << Gnome::Canvas::Properties::fill_color("red");
1.13 - arrow->signal_event().connect(sigc::mem_fun(*this, &BrokenEdge::edgeFormerEventHandler));
1.14 - arrow->lower_to_bottom();
1.15 - setPoints(p);
1.16 -}
1.17 -
1.18 -BrokenEdge::~BrokenEdge()
1.19 -{
1.20 - if(arrow)delete(arrow);
1.21 -}
1.22 -
1.23 -void BrokenEdge::setPoints(Gnome::Canvas::Points p, bool move)
1.24 -{
1.25 - bool set_arrow=false;
1.26 - //red arrow losts its position-right button
1.27 - if(!move)
1.28 - {
1.29 - if(p.size()==2)
1.30 - {
1.31 - set_arrow=true;
1.32 - Gnome::Canvas::Points points_with_center;
1.33 - points_with_center.push_back(my_points[0]=p[0]);
1.34 - 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 );
1.35 - points_with_center.push_back(my_points[2]=p[1]);
1.36 - property_points().set_value(points_with_center);
1.37 - }
1.38 - if(p.size()==3)
1.39 - {
1.40 - set_arrow=true;
1.41 - property_points().set_value(p);
1.42 - for(int i=0;i<3;i++)
1.43 - {
1.44 - my_points[i]=p[i];
1.45 - }
1.46 - }
1.47 - }
1.48 - else
1.49 - {
1.50 - //arrow keeps its position-left button
1.51 -
1.52 -// if(p.size()==2)
1.53 -// {
1.54 -// Gnome::Canvas::Points points;
1.55 -// my_points[0]=p[0];
1.56 -// my_points[2]=p[1];
1.57 -// for(int i=0;i<3;i++)
1.58 -// {
1.59 -// points.push_back(my_points[i]);
1.60 -// }
1.61 -// property_points().set_value(points);
1.62 -// }
1.63 - set_arrow=true;
1.64 -
1.65 - //////////////////////////////////////////////////////////////////////////////////////////////////////
1.66 - /////////// keeps shape-with scalar multiplication - version 2.
1.67 - //////////////////////////////////////////////////////////////////////////////////////////////////////
1.68 -
1.69 - if(p.size()==2)
1.70 - {
1.71 - //old vector from one to the other node - a
1.72 - xy<double> a_v(my_points[2].get_x()-my_points[0].get_x(),my_points[2].get_y()-my_points[0].get_y());
1.73 - //new vector from one to the other node - b
1.74 - xy<double> b_v(p[1].get_x()-p[0].get_x(),p[1].get_y()-p[0].get_y());
1.75 -
1.76 - double absa=sqrt(a_v.normSquare());
1.77 - double absb=sqrt(b_v.normSquare());
1.78 -
1.79 - //old vector from one node to the breakpoint - c
1.80 - xy<double> c_v(my_points[1].get_x()-my_points[0].get_x(),my_points[1].get_y()-my_points[0].get_y());
1.81 -
1.82 - //unit vector with the same direction to a_v
1.83 - xy<double> a_v_u(a_v.x/absa,a_v.y/absa);
1.84 -
1.85 - //normal vector of unit vector with the same direction to a_v
1.86 - xy<double> a_v_u_n(((-1)*a_v_u.y),a_v_u.x);
1.87 -
1.88 - //unit vector with the same direction to b_v
1.89 - xy<double> b_v_u(b_v.x/absb,b_v.y/absb);
1.90 -
1.91 - //normal vector of unit vector with the same direction to b_v
1.92 - xy<double> b_v_u_n(((-1)*b_v_u.y),b_v_u.x);
1.93 -
1.94 - //vector c in a_v_u and a_v_u_n co-ordinate system
1.95 - xy<double> c_a(c_v*a_v_u,c_v*a_v_u_n);
1.96 -
1.97 - //new vector from one node to the breakpoint - d - we have to calculate this one
1.98 - xy<double> d_v=absb/absa*(c_a.x*b_v_u+c_a.y*b_v_u_n);
1.99 -
1.100 - my_points[1]=Gnome::Art::Point(d_v.x+p[0].get_x(),d_v.y+p[0].get_y());
1.101 -
1.102 - my_points[0]=p[0];
1.103 - my_points[2]=p[1];
1.104 -
1.105 - Gnome::Canvas::Points points;
1.106 - for(int i=0;i<3;i++)
1.107 - {
1.108 - points.push_back(my_points[i]);
1.109 - }
1.110 - property_points().set_value(points);
1.111 - }
1.112 - }
1.113 - if(set_arrow)
1.114 - {
1.115 - //calculating coordinates of the direction indicator arrow
1.116 -
1.117 - xy<gdouble> target( my_points[2].get_x(), my_points[2].get_y() );
1.118 - xy<gdouble> center( my_points[1].get_x(), my_points[1].get_y() );
1.119 -
1.120 - xy<gdouble> unit_vector_in_dir(target-center);
1.121 - // std::cout << target << " - " << center << " = " << unit_vector_in_dir << " / " <<unit_vector_in_dir.normSquare() ;
1.122 - unit_vector_in_dir/=sqrt( unit_vector_in_dir.normSquare() );
1.123 - // std::cout << " = " << unit_vector_in_dir << std::endl;
1.124 -
1.125 - xy<gdouble> unit_norm_vector(0-unit_vector_in_dir.y, unit_vector_in_dir.x);
1.126 - // std::cout << unit_norm_vector << std::endl;
1.127 -
1.128 - {
1.129 - // /\ // top
1.130 - // / \ //
1.131 - // - - // c(enter)l(eft), ccl, ccr, cr
1.132 - // || //
1.133 - // || // b(ottom)l, br
1.134 - }
1.135 -
1.136 - double size=3;
1.137 -
1.138 - xy<gdouble> bl (center - unit_vector_in_dir * 3 * size + unit_norm_vector * size );
1.139 - xy<gdouble> br (center - unit_vector_in_dir * 3 * size - unit_norm_vector * size );
1.140 - xy<gdouble> ccl(center + unit_vector_in_dir * size + unit_norm_vector * size );
1.141 - xy<gdouble> ccr(center + unit_vector_in_dir * size - unit_norm_vector * size );
1.142 - xy<gdouble> cl (center + unit_vector_in_dir * size + unit_norm_vector * 2 * size );
1.143 - xy<gdouble> cr (center + unit_vector_in_dir * size - unit_norm_vector * 2 * size );
1.144 - xy<gdouble> top(center + unit_vector_in_dir * 3 * size);
1.145 -
1.146 - // std::cout << bl << " " << br << " " << ccl << " " << ccr << " " << cl << " " << cr << " " << top << std::endl;
1.147 -
1.148 - Gnome::Canvas::Points arrow_points;
1.149 - arrow_points.push_back(Gnome::Art::Point( bl.x , bl.y ) );
1.150 - arrow_points.push_back(Gnome::Art::Point( br.x , br.y ) );
1.151 - arrow_points.push_back(Gnome::Art::Point( ccr.x, ccr.y ) );
1.152 - arrow_points.push_back(Gnome::Art::Point( cr.x , cr.y ) );
1.153 - arrow_points.push_back(Gnome::Art::Point( top.x, top.y ) );
1.154 - arrow_points.push_back(Gnome::Art::Point( cl.x , cl.y ) );
1.155 - arrow_points.push_back(Gnome::Art::Point( ccl.x, ccl.y ) );
1.156 -
1.157 - arrow->property_points().set_value(arrow_points);
1.158 - }
1.159 -}
1.160 -
1.161 -bool BrokenEdge::edgeFormerEventHandler(GdkEvent* e)
1.162 -{
1.163 - switch(e->type)
1.164 - {
1.165 - case GDK_BUTTON_PRESS:
1.166 - //we mark the location of the event to be able to calculate parameters of dragging
1.167 - if(gdc.getActualTool()!=CREATE_NODE)
1.168 - {
1.169 - gdc.toggleEdgeActivity(this, true);
1.170 - clicked_x=e->button.x;
1.171 - clicked_y=e->button.y;
1.172 - isbutton=true;
1.173 - }
1.174 - break;
1.175 - case GDK_BUTTON_RELEASE:
1.176 - if(gdc.getActualTool()!=CREATE_NODE)
1.177 - {
1.178 - gdc.toggleEdgeActivity(this, false);
1.179 - isbutton=false;
1.180 - }
1.181 - break;
1.182 - case GDK_MOTION_NOTIFY:
1.183 - //we only have to do sg. if the mouse button is pressed
1.184 - if(isbutton)
1.185 - {
1.186 - //new coordinates will be the old values,
1.187 - //because the item will be moved to the
1.188 - //new coordinate therefore the new movement
1.189 - //has to be calculated from here
1.190 -
1.191 - double dx=e->motion.x-clicked_x;
1.192 - double dy=e->motion.y-clicked_y;
1.193 -
1.194 - Gnome::Canvas::Points points_new;
1.195 -
1.196 - points_new.push_back(my_points[0]);
1.197 - points_new.push_back(my_points[1]=Gnome::Art::Point(my_points[1].get_x()+dx,my_points[1].get_y()+dy));
1.198 - points_new.push_back(my_points[2]);
1.199 -
1.200 - setPoints(points_new);
1.201 - gdc.textReposition(xy<double>(my_points[1].get_x(),my_points[1].get_y()));
1.202 -
1.203 - clicked_x=e->motion.x;
1.204 - clicked_y=e->motion.y;
1.205 -
1.206 - }
1.207 - default: break;
1.208 - }
1.209 -
1.210 - return true;
1.211 -}
1.212 -
1.213 -xy<double> BrokenEdge::getArrowPos()
1.214 -{
1.215 - xy<double> ret_val(my_points[1].get_x(),my_points[1].get_y());
1.216 - return ret_val;
1.217 -}