} //trajectory update
public static void Vertical_Trajectory(int nr)
{
g = Graphics.FromImage(map);
//speed = (float.Parse(tb2.Text) / 100) * 1.5f;
if (toinit)
{
ps.Clear();
speed = float.Parse(tb2.Text);
grav = (float.Parse(tb4.Text) / 100) * 1.5f;
tempx = new float[nr];
tempy = new float[nr];
acceleration = new float[nr];
for (int i = 0; i < nr; i++)
{
ps.Add(new ColorPoint(rand.Next(10, drawspace.Width - 9), drawspace.Height - 200, Color.FromArgb(rand.Next(256), rand.Next(256), rand.Next(256))));
tempy[i] = (rand.Next((int)speed / 2, (int)speed + 1) / 100) * 1.5f;
acceleration[i] = grav;
toinit = false;
}
}
else
{
for (int i = 0; i < nr; i++)
{
ps[i] = new ColorPoint(ps[i].x, drawspace.Height - 200, ps[i].color);
tempy[i] = (rand.Next((int)speed / 3, (int)speed + 1) / 100) * 1.5f;
acceleration[i] = grav;
}
}
time.Interval = 30;
Update_func[Search_tag("vtrajectory")].torun = true;
} //throwing ball in the air and falling simulation
} //throwing ball in the air and falling simulation
public static void Vertical_Trajectory_Update()
{
g.Clear(Color.White);
bool ok = true;
for (int i = 0; i < ps.Count; i++)
{
float py = ps[i].y + (-tempy[i] + acceleration[i]);
if (py < drawspace.Height - 200)
{
g.DrawLine(Pens.Black, 0, drawspace.Height - 200, drawspace.Width, drawspace.Height - 200);
acceleration[i] += grav;
g.FillEllipse(new SolidBrush(ps[i].color), ps[i].x - 4, py - 4, 8, 8);
ps[i] = new ColorPoint(ps[i].x, (int)py, ps[i].color);
ok = false;
}
else
{
g.DrawLine(Pens.Black, 0, drawspace.Height - 200, drawspace.Width, drawspace.Height - 200);
PointF p1 = new PointF(ps[i].x - 4, py - (-tempy[i] + acceleration[i]) - 4);
PointF p2 = new PointF(ps[i].x - 4, py - 4);
PointF p3 = new PointF(0, drawspace.Height - 200);
PointF p4 = new PointF(drawspace.Width, drawspace.Height - 200);
PointF itr = Intersectionof2lines(p1, p2, p3, p4);
g.FillEllipse(new SolidBrush(ps[i].color), itr.X, itr.Y - 8, 8, 8);
}
//tempx[i] = tempx[i] - acceleration[i];
//tempy[i] = tempy[i] + tempx[i];
}
/* bool ok = true;
* for (int i = 0; i < ps.Count; i++)
* if (!isok[i])
* ok = false;*/
if (ok)
{
Update_func[Search_tag("vtrajectory")].torun = false;
}
Updatebackground(drawspace, map);
} //update for vertical trajectory
