Initial revision

[netvis.git] / source / host.cpp

diff --git a/source/host.cpp b/source/host.cpp
new file mode 100644 (file)
index 0000000..be24f05
--- /dev/null
+++ b/source/host.cpp
@@ -0,0 +1,95 @@
+#include <cmath>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <msp/gl/immediate.h>
+#include <msp/gl/matrix.h>
+#include <msp/gl/texture.h>
+#include <msp/gl/transform.h>
+#include <msp/time/units.h>
+#include "host.h"
+#include "netvis.h"
+
+using namespace std;
+using namespace Msp;
+
+Host::Host(NetVis &nv, unsigned a):
+       netvis(nv),
+       addr(a)
+{
+       in_addr ina;
+       ina.s_addr=htonl(addr);
+       name=inet_ntoa(ina);
+}
+
+void Host::set_position(const Vector2 &p)
+{
+       pos=p;
+}
+
+void Host::add_connection(Connection &)
+{
+}
+
+Connection *Host::get_connection(Host &)
+{
+       return 0;
+}
+
+void Host::tick(const Msp::Time::TimeDelta &td)
+{
+       float dt=td/Msp::Time::sec;
+
+       const map<unsigned, Host *> &hosts=netvis.get_hosts();
+       float fx=-pos.x*0.1;
+       float fy=-pos.y*0.1;
+       for(map<unsigned, Host *>::const_iterator i=hosts.begin(); i!=hosts.end(); ++i)
+       {
+               if(i->second!=this)
+               {
+                       const Vector2 &other_pos=i->second->get_position();
+                       float dx=other_pos.x-pos.x;
+                       float dy=other_pos.y-pos.y;
+                       float d2=dx*dx+dy*dy;
+                       float d=sqrt(d2);
+
+                       unsigned other_addr=i->second->get_address();
+                       unsigned matching_bits=0;
+                       for(unsigned j=32; (j-- && !((addr^other_addr)>>j));)
+                               ++matching_bits;
+
+                       float nearness=24-min(matching_bits, 24U);
+                       float f=10000.0*(1.0/(60+nearness*15)-1.0/d);
+
+                       fx+=dx/d*f;
+                       fy+=dy/d*f;
+               }
+       }
+
+       if(fx<-4 || fx>4)
+               pos.x+=fx*dt;
+       if(fy<-4 || fy>4)
+               pos.y+=fy*dt;
+}
+
+void Host::render() const
+{
+       GL::push_matrix();
+       GL::translate(static_cast<int>(pos.x), static_cast<int>(pos.y), 0);
+
+       GL::Immediate imm((GL::COLOR4_UBYTE, GL::VERTEX2));
+       imm.begin(GL::QUADS);
+       imm.color(1.0f, 1.0f, 1.0f, 1.0f);
+       imm.vertex(-5, -5);
+       imm.vertex(5, -5);
+       imm.vertex(5, 5);
+       imm.vertex(-5, 5);
+       imm.end();
+
+       const GL::Font &font=netvis.get_font();
+       GL::translate(-static_cast<int>(font.get_string_width(name)*5), 6, 0);
+       GL::scale_uniform(10);
+       font.draw_string(name);
+       GL::Texture::unbind();
+
+       GL::pop_matrix();
+}