public NBodySystem()
{
bodies = new Body[] {
Body.Sun(),
Body.Jupiter(),
Body.Saturn(),
Body.Uranus(),
Body.Neptune()
};
double px = 0.0;
double py = 0.0;
double pz = 0.0;
foreach (Body _body in bodies) // body is a reserved keyword in D
{
px += _body.vx * _body.mass;
py += _body.vy * _body.mass;
pz += _body.vz * _body.mass;
}
bodies[0].OffsetMomentum(px, py, pz);
}
public NBodySystem()
{
bodies = new Body[] {
Body.Sun(),
Body.Jupiter(),
Body.Saturn(),
Body.Uranus(),
Body.Neptune()
};
double px = 0.0;
double py = 0.0;
double pz = 0.0;
foreach (Body body in bodies)
{
px += body.vx * body.mass;
py += body.vy * body.mass;
pz += body.vz * body.mass;
}
bodies[0].OffsetMomentum(px, py, pz);
}
public NBodySystem()
{
bodies = new Body[]{
Body.Sun(),
Body.Jupiter(),
Body.Saturn(),
Body.Uranus(),
Body.Neptune()
};
Body xx = Body.Saturn();
double xxXX = xx.vx + xx.vy;
Body yy = bodies[2];
double yyYY = yy.vx + yy.vy;
double px = 0.0;
double py = 0.0;
double pz = 0.0;
foreach (Body body in bodies)
{
double test = body.mass; // this is OK. but the ones below fail because there is an EXPRESSION.
/* px += ( body.vx * body.mass ) / 1.0; THE DIVISION IS JUST A TEST...
py += body.vy * body.mass;
pz += body.vz * body.mass; */
double tmpM = body.mass;
double tmpX = body.vx;
double tmpY = body.vy;
double tmpZ = body.vz;
px += tmpX * tmpM;
py += tmpY * tmpM;
pz += tmpZ * tmpM;
}
bodies[0].OffsetMomentum(px, py, pz);
}
