private void InitSystem()
{
dsim = false;
dump_frames = false;
drawables = new List <IDrawable>();
particles = new List <Particle>();
_solverEnvironment = new SolverEnvironment();
_solverEnvironment.Solver = new EulerSolver();
liqSystem = new LiquidSystem();
liqSystem.AllocateData();
liqSystem.Visualization = Visualization.Both;
Add(liqSystem);
_uField = new ContinuousField(liqSystem.N + 2, liqSystem.N + 2);
_vField = new ContinuousField(liqSystem.N + 2, liqSystem.N + 2);
_dField = new ContinuousField(liqSystem.N + 2, liqSystem.N + 2);
mouseForce = new MouseSpringForce(0, new HyperPoint <float>(1f, 1f), 0.02f, 2f, 1f, false);
Add(mouseForce);
AddParticle(new Particle(new HyperPoint <float>(0.5f, 0.5f), 1, new List <HyperPoint <float> >()
{
new HyperPoint <float>(0.02f, 0.2f),
new HyperPoint <float>(-0.02f, 0.2f),
new HyperPoint <float>(-0.02f, -0.2f),
new HyperPoint <float>(0.02f, -0.2f),
}));
_solverEnvironment.Forces.Add(new VelocityFieldForce(particles.ConvertAll(x => x.Index), _uField, _vField, _dField, liqSystem.N + 2));
_solverEnvironment.Forces.Add(new ViscousDragForce(particles.ConvertAll(x => x.Index), 0.8f));
_solverEnvironment.Forces.Add(mouseForce);
mousePointer = new MousePointer();
Add(mousePointer);
ClearData();
UpdateHeader();
}
public void ResetSimulation()
{
m_HasMouseSelection = false;
m_CurrentMouseForce = null;
if (m_SpeedSliderText != null)
{
m_SpeedSliderText.text = Math.Round(m_Speed, 4) + "x";
}
m_ReversedTime = false;
if (m_SimulationFlowToggle != null)
{
m_SimulationFlowToggle.isOn = false;
}
m_TouchForces.Clear();
m_ParticleSystem.Clear();
m_Scenario.CreateScenario(m_ParticleSystem);
m_ParticleSystem.Initialize();
m_Integrator.Initialize(m_ParticleSystem);
SetupDebugGameObjects();
}
private void HandleUserInteraction()
{
if (Input.touchSupported)
{
if (Input.touchCount > 0)
{
Touch[] touches = Input.touches;
for (int i = 0; i < touches.Length; ++i)
{
Touch touch = touches[i];
int id = touch.fingerId;
Vector3 touchPos3D = Camera.main.ScreenToWorldPoint(touch.position);
Vector2 touchPos = new Vector2(touchPos3D.x, touchPos3D.y);
if (touch.phase == TouchPhase.Began)
{
Particle closestParticle;
if (GetClosestParticle(touchPos, m_ParticleSelectThreshold, out closestParticle))
{
MouseSpringForce touchForce = new MouseSpringForce(closestParticle, touchPos, m_MouseSelectRestLength, m_MouseSelectSpringConstant, m_MouseSelectDampingConstant);
// This should never happen, but adding anyway for robustness:
MouseSpringForce existingForce;
if (m_TouchForces.TryGetValue(id, out existingForce))
{
m_ParticleSystem.RemoveForce(existingForce);
}
m_TouchForces[id] = touchForce;
m_ParticleSystem.AddForce(touchForce);
}
}
else if (touch.phase == TouchPhase.Moved)
{
MouseSpringForce existingForce;
if (m_TouchForces.TryGetValue(id, out existingForce))
{
existingForce.UpdateMousePosition(touchPos);
}
}
else if (touch.phase == TouchPhase.Canceled || touch.phase == TouchPhase.Ended)
{
MouseSpringForce existingForce;
if (m_TouchForces.TryGetValue(id, out existingForce))
{
m_ParticleSystem.RemoveForce(existingForce);
m_TouchForces.Remove(id);
}
}
}
}
}
if (Input.mousePresent && Input.touchCount == 0)
{
Vector3 mousePos3D = Camera.main.ScreenToWorldPoint(Input.mousePosition);
Vector2 mousePos = new Vector2(mousePos3D.x, mousePos3D.y);
if (!m_HasMouseSelection && Input.GetMouseButtonDown(0))
{
Particle closestParticle;
if (GetClosestParticle(mousePos, m_ParticleSelectThreshold, out closestParticle))
{
m_CurrentMouseForce = new MouseSpringForce(closestParticle, mousePos, m_MouseSelectRestLength,
m_MouseSelectSpringConstant, m_MouseSelectDampingConstant);
m_ParticleSystem.AddForce(m_CurrentMouseForce);
m_HasMouseSelection = true;
}
}
else if (m_HasMouseSelection && Input.GetMouseButtonDown(1))
{
m_ParticleSystem.RemoveForce(m_CurrentMouseForce);
m_CurrentMouseForce = null;
m_HasMouseSelection = false;
}
else if (m_HasMouseSelection)
{
m_CurrentMouseForce.UpdateMousePosition(mousePos);
}
}
}