Changeset 1714:66c89fe52d4e in lemon-0.x

Timestamp:

10/06/05 14:32:06 (19 years ago)

Author:

Hegyi Péter

Branch:

default

Phase:

public

Convert:

svn:c9d7d8f5-90d6-0310-b91f-818b3a526b0e/lemon/trunk@2241

Message:

Shape keeping movement is implemented, at last. Many thanks to Alpar.

File:

• gui/broken_edge.cc (modified) (1 diff)

gui/broken_edge.cc

@@ -47 +47 @@
       //arrow keeps its position-left button
 
+//       if(p.size()==2)
+//              {
+//                Gnome::Canvas::Points points;
+//                my_points[0]=p[0];
+//                my_points[2]=p[1];
+//                for(int i=0;i<3;i++)
+//                  {
+//                    points.push_back(my_points[i]);
+//                  }
+//                property_points().set_value(points);
+//              }
+      set_arrow=true;
+
+      //////////////////////////////////////////////////////////////////////////////////////////////////////
+      /////////// keeps shape-with scalar multiplication - version 2.
+      //////////////////////////////////////////////////////////////////////////////////////////////////////
+
       if(p.size()==2)
         {
-          Gnome::Canvas::Points points;
+          //old vector from one to the other node - a
+          xy<double> a_v(my_points[2].get_x()-my_points[0].get_x(),my_points[2].get_y()-my_points[0].get_y());
+          //new vector from one to the other node - b
+          xy<double> b_v(p[1].get_x()-p[0].get_x(),p[1].get_y()-p[0].get_y());
+
+          double absa=sqrt(a_v.normSquare());
+          double absb=sqrt(b_v.normSquare());
+
+          //old vector from one node to the breakpoint - c
+          xy<double> c_v(my_points[1].get_x()-my_points[0].get_x(),my_points[1].get_y()-my_points[0].get_y());
+
+          //unit vector with the same direction to a_v
+          xy<double> a_v_u(a_v.x/absa,a_v.y/absa);
+
+          //normal vector of unit vector with the same direction to a_v
+          xy<double> a_v_u_n(((-1)*a_v_u.y),a_v_u.x);
+
+          //unit vector with the same direction to b_v
+          xy<double> b_v_u(b_v.x/absb,b_v.y/absb);
+
+          //normal vector of unit vector with the same direction to b_v
+          xy<double> b_v_u_n(((-1)*b_v_u.y),b_v_u.x);
+
+          //vector c in a_v_u and a_v_u_n co-ordinate system
+          xy<double> c_a(c_v*a_v_u,c_v*a_v_u_n);
+
+          //new vector from one node to the breakpoint - d - we have to calculate this one
+          xy<double> d_v=absb/absa*(c_a.x*b_v_u+c_a.y*b_v_u_n);
+
+          my_points[1]=Gnome::Art::Point(d_v.x+p[0].get_x(),d_v.y+p[0].get_y());
+
           my_points[0]=p[0];
           my_points[2]=p[1];
-          for(int i=0;i<3;i++)
-            {
-              points.push_back(my_points[i]);
-            }
-          property_points().set_value(points);
-        }
-      set_arrow=true;
-
-      //////////////////////////////////////////////////////////////////////////////////////////////////////
-      /////////// kepps shape-with angles
-      //////////////////////////////////////////////////////////////////////////////////////////////////////
-
-
-//       //old vector from one to the other node
-//       xy<double> o_p2p(my_points[2].get_x()-my_points[0].get_x(),my_points[2].get_y()-my_points[0].get_y());
-//       //projection of the old vector to positive x axis
-//       xy<double> o_x_p2p(fabs(o_p2p.x),0);
-//       //length of p2p vector
-//       double o_l_p2p=sqrt( o_p2p.normSquare() );
-//       if(o_p2p.x<0)
-//      {
-//        o_l_p2p*=-1;
-//      }
-//       //length of projection of p2p vector
-//       double o_l_x_p2p=sqrt( o_x_p2p.normSquare() );
-//       //old angle of p2p vector to the x axis
-//       double o_a_p2p=acos(o_l_x_p2p/o_l_p2p);
-//       if(o_p2p.y>0)
-//      {
-//        o_a_p2p=2*M_PI-o_a_p2p;
-//      }
-
-//       //old vector from first node to the breakpoint
-//       xy<double> o_1b((my_points[1].get_x()-my_points[0].get_x()),(my_points[1].get_y()-my_points[0].get_y()));
-//       //projection of the old node-breakpoint vector to positive x axis
-//       xy<double> o_x_1b(fabs(o_1b.x),0);
-//       //length of 1b vector
-//       double o_l_1b=sqrt( o_1b.normSquare() );
-//       if(o_1b.x<0)
-//      {
-//        o_l_1b*=-1;
-//      }
-//       //length of projection of 1b vector
-//       double o_l_x_1b=sqrt( o_x_1b.normSquare() );
-//       //old angle of 1b vector to the x axis
-//       double o_a_1b=acos(o_l_x_1b/o_l_1b);
-//       if(o_1b.y>0)
-//      {
-//        o_a_1b=2*M_PI-o_a_1b;
-//      }
-
-//       if(p.size()==2)
-//              {
-//        set_arrow=true;
-
-//                my_points[0]=p[0];
-//                my_points[2]=p[1];
-
-//        //new vector from one to the other node
-//        xy<double> n_p2p(my_points[2].get_x()-my_points[0].get_x(),my_points[2].get_y()-my_points[0].get_y());
-//        //projection of the new vector to positive x axis
-//        xy<double> n_x_p2p(fabs(n_p2p.x),0);
-//        //length of p2p vector
-//        double n_l_p2p=sqrt( n_p2p.normSquare() );
-//        if(n_p2p.x<0)
-//          {
-//            n_l_p2p*=-1;
-//          }
-//        //length of projection of p2p vector
-//        double n_l_x_p2p=sqrt( n_x_p2p.normSquare() );
-//        //new angle of p2p vector to the x axis
-//        double n_a_p2p=acos(n_l_x_p2p/n_l_p2p);
-//        if(n_p2p.y>0)
-//          {
-//            n_a_p2p=2*M_PI-n_a_p2p;
-//          }
-
-//        //new angle of 1b vector to the x axis
-//        double n_a_1b=o_a_1b+n_a_p2p-o_a_p2p;
-
-//        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;
-//        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;
-
-// //     std::cout << o_p2p << " " << n_p2p << std::endl;
-
-//        if((n_a_1b>M_PI*3/2)||(n_a_1b<M_PI/2))
-//          {
-//            std::cout << "jobb terfel" << std::endl;
-//            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);
-//          }
-//        else if((n_a_1b<M_PI*3/2)&&(n_a_1b>M_PI/2))
-//          {
-//            std::cout << "bal terfel" << std::endl;
-//            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);
-//          }
-//        else
-//          {
-//            std::cout << "y tengely" << std::endl;
-//            double new_y=my_points[1].get_y();
-//            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);
-//          }
-
-//        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;
-
-
-// //     if(o_1b.x*o_1b.y>0)
-// //       {
-// //         if(n_p2p.x>0)
-// //           {
-// //             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);
-// //           }
-// //         else
-// //           {
-// //             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);
-// //           }
-// //       }
-// //     else if(o_1b.x*o_1b.y<0)
-// //       {
-// //         if(n_p2p.x>0)
-// //           {
-// //             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);
-// //           }
-// //         else
-// //           {
-// //             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);
-// //           }
-// //       }
-// //     else
-// //       {
-// //       }
-
-      //////////////////////////////////////////////////////////////////////////////////////////////////////
-      /////////// kepps shape-with scalar multiplication
-      //////////////////////////////////////////////////////////////////////////////////////////////////////
-
-//       if(p.size()==2)
-//              {
-//        //old vector from one to the other node - a
-//        xy<double> a_v(my_points[2].get_x()-my_points[0].get_x(),my_points[2].get_y()-my_points[0].get_y());
-//        //new vector from one to the other node - b
-//        xy<double> b_v(p[1].get_x()-p[0].get_x(),p[1].get_y()-p[0].get_y());
-
-//        //old vector from one node to the breakpoint - c
-//        xy<double> c_v(my_points[1].get_x()-my_points[0].get_x(),my_points[1].get_y()-my_points[0].get_y());
-
-//        //new vector from one node to the breakpoint - d - we have to calculate this one
-//        xy<double> d_v;
-
-//        //scalar product of a and b (old and new vector from first point to the other)
-//        double sab=a_v*b_v;
-//        //scalar product of c and d (old and new vector from first point to breakpoint)
-//        double scd=sab*c_v.normSquare()/a_v.normSquare();
-
-//        std::cout<<" a " << a_v<<" b " <<b_v<<" c " <<c_v<<" sab " <<sab<<" scd "<<scd<<std::endl;
-
-//        double a=c_v.normSquare();
-//        double b=2*scd*c_v.y;
-//        double c=scd*scd-b_v.normSquare()/a_v.normSquare()*c_v.normSquare()*c_v.x*c_v.x;
-
-//        std::cout<<" a " << a<<" b " <<b<<" c " <<c<<std::endl;
-
-//        d_v.y=(-b-sqrt(b*b-4*a*c))/2/a;
-
-//        if(c_v.x!=0)
-//          {
-//            d_v.x=(scd-c_v.y*d_v.y)/c_v.x;
-//          }
-//        else
-//          {
-//            d_v.x=my_points[1].get_x();
-//          }
-
-//        std::cout<<" d " << d_v<<std::endl;
-
-//        my_points[1]=Gnome::Art::Point(d_v.x+p[0].get_x(),d_v.y+p[0].get_y());
-
-//        Gnome::Canvas::Points points;
-//        for(int i=0;i<3;i++)
-//          {
-//            points.push_back(my_points[i]);
-//          }
-//        property_points().set_value(points);
-//      }
+
+          Gnome::Canvas::Points points;
+          for(int i=0;i<3;i++)
+            {
+              points.push_back(my_points[i]);
+            }
+          property_points().set_value(points);
+        }
     }
   if(set_arrow)