public void CalculateVelocityField()
{
VelocityField.Clear();
Vector3 prevPos = P0.transform.position;
for (int c = 1; c <= Resolution; c++)
{
float t = (float)c / Resolution;
Vector3 currPos = CurveMath.CalculateBezierPoint(t, P0.transform.position, P0_Tangent.transform.position, P1_Tangent.transform.position, P1.transform.position);
Vector3 currTan = (currPos - prevPos).normalized;
float mag = VelocityMagCurve.Evaluate(t);
VelocityFieldNode ti = new VelocityFieldNode();
ti.TargetPosition = prevPos;
ti.TargetVelocity = currTan;
ti.Mag = mag;
VelocityField.Add(ti);
prevPos = currPos;
}
}
public void TestVelocityField()
{
///Shear Flow
///(-U(y - height) ,0)
VelocityField stream = CommonVelocityFields.UniformStream;
CommonVelocityFields.FlowStrength = 3;
Particle p = new Particle(5, new Vector(5, 5));
p.ApplyVelocityField(stream);
p.Move(5);
Vector result = p.Position;
//flow strength 3, so should move 15 in x direction
Vector expected = new Vector(20, 5);
Assert.AreEqual(expected, result);
}
private void FlowPicker_SelectedIndexChanged(object sender, EventArgs e)
{
Picker picker = (Picker)sender;
int selectedIndex = picker.SelectedIndex;
if (selectedIndex != -1)
{
VelocityField field = (picker.ItemsSource[selectedIndex] as VelocityFieldListItem)?.Field;
foreach (FluidSimParticle p in _particles)
{
p.Particle.ApplyVelocityField(field);
}
foreach (FluidSimParticle p in _touchParticles)
{
p.Particle.ApplyVelocityField(field);
}
this.SelectedVelocityField = field;
SetUserControls();
}
}
public void ClearVelocityField()
{
VelocityField = new VelocityField();
}
public void ApplyVelocityField(VelocityField f)
{
VelocityField = f;
}
public VelocityFieldListItem(string name, VelocityField v)
{
this.Name = name;
this.Field = v;
}
