X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fhost.cpp;fp=source%2Fhost.cpp;h=be24f05360d05060455228e66b6492dbb2160397;hb=229e1d6ab66a9e987ffe3cd4a8de7c7f874f6de1;hp=0000000000000000000000000000000000000000;hpb=d60114dae1afaba8269e0cf65c9375a7380f5807;p=netvis.git

diff --git a/source/host.cpp b/source/host.cpp
new file mode 100644
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();
+}