protected override void Start()
{
this.grid = new PICGrid(-9.8f, this.gridSize.x, this.gridSize.y, 1);
this.particles = new PICParticles(grid, this.type);
this.AddParticle();
this.parameter.numberOfParticles.Value = this.gridSize.x * this.gridSize.y * 4;
this.ResizeBuffer(this.parameter.numberOfParticles.Value);
this.grid.solver = this.solver;
this.grid.dataUpdate = this.dataUpdate;
}
void AdvanceOneStep(PICGrid grid, PICParticles particles, float dt)
{
particles.TransferToGrid();
//grid.save_velocities();
grid.SolveGravity(dt);
grid.BuildSDF();
grid.ExternVelocity();
grid.ApplySolidSDF();
grid.SolveIncompressible(this.method == Method.CPU, this.linearSolver == LinearSolver.Jacobi);
grid.ExternVelocity();
//grid.get_velocity_update();
particles.GridToParticle();
for (int i = 0; i < 5; ++i)
{
particles.MoveParticle(0.2f * dt);
}
}
void AdvanceOneFrame(PICGrid grid, PICParticles particles, float frametime)
{
float t = 0;
float dt;
bool finished = false;
while (!finished)
{
dt = 2 * grid.GetCFL();
if (t + dt >= frametime)
{
dt = frametime - t;
finished = true;
}
else if (t + 1.5 * dt >= frametime)
{
dt = 0.5f * (frametime - t);
}
Debug.LogFormat("advancing {0} (to {1}% of frame)\n", dt, 100.0 * (t + dt) / frametime);
AdvanceOneStep(grid, particles, dt);
t += dt;
}
}