private void SetupParticles()
{
for (int i = 0; i < _particlesAmount; i++)
{
Vector pos = new Vector(this.Rand.Next(0, _viewResolution.Width), this.Rand.Next(0, _viewResolution.Height));
Particle point = new Particle(1, pos);
point.ApplyVelocityField(this.SelectedVelocityField);
_particles.Add(new FluidSimParticle
{
Id = i,
Node = new CCDrawNode {
Position = new CCPoint((float)pos.X, (float)pos.Y)
},
Particle = point,
LifeTime = GetNewLifeTime()
});
_layer.AddChild(_particles[i].Node);
_particles[i].Node.DrawSolidCircle(new CCPoint(0, 0), 0.3f, CCColor4B.White);
}
for (int i = 0; i < _touchParticlesAmount; i++)
{
Particle point = new Particle(1, new Vector());
point.ApplyVelocityField(this.SelectedVelocityField);
_touchParticles.Add(new FluidSimParticle
{
Id = i,
Node = new CCDrawNode {
Position = new CCPoint(0, 0), Visible = false
},
Particle = point,
LifeTime = 0
});
_layer.AddChild(_touchParticles[i].Node);
_touchParticles[i].Node.DrawSolidCircle(new CCPoint(0, 0), 0.8f, CCColor4B.Yellow);
}
_centreWheelNode.Position = new CCPoint(_viewResolution.Width / 2, _viewResolution.Height / 2);
_spinningWheelNode.Position = new CCPoint(_centreWheelNode.Position.X, _centreWheelNode.Position.Y + (float)RadiusSlider.Value);
_layer.AddChild(_centreWheelNode);
_layer.AddChild(_spinningWheelNode);
}
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);
}