private void RenderPanel_MouseMove(object sender, MouseEventArgs e)
{
if (selectedParticleIndex != -1)
{
mousePosition = new Vector(e.X, e.Y);
}
}
private void RenderPanel_MouseDown(object sender, MouseEventArgs e)
{
mousePosition = new Vector(e.X, e.Y);
for (int i = 0; i < _simulation.Particles.Count; ++i)
{
Vector temp = mousePosition - _simulation.Particles[i].Position;
if (Vector.Length(temp) <= _simulation.Particles[i].MetaData.Radius)
{
selectedParticleIndex = i;
break;
}
}
}
public static void MultiplyLength(ref Vector a,double multiple)
{
a.X *= multiple;
a.Y *= multiple;
}
public static void Normalize(ref Vector a)
{
double invLength = 1/Length(a);
a.X *= invLength;
a.Y *= invLength;
}
public static double Length(Vector a)
{
return Math.Sqrt(Math.Pow(a.X, 2) + Math.Pow(a.Y, 2));
}
