void FluidCubeAddVelocity(FluidCube cube, int x, int y, float amountX, float amountY)
{
int index = ArrayIndex(x, y);
cube.Vx[index] += amountX;
cube.Vy[index] += amountY;
}
void FluidCubeStep(FluidCube cube)
{
float visc = cube.visc;
float diff = cube.diff;
float dt = cube.dt;
float[] Vx = cube.Vx;
float[] Vy = cube.Vy;
float[] Vx0 = cube.Vx0;
float[] Vy0 = cube.Vy0;
float[] s = cube.s;
float[] density = cube.density;
Diffuse(1, Vx0, Vx, visc, dt);
Diffuse(2, Vy0, Vy, visc, dt);
Projection(Vx0, Vy0, Vx, Vy);
Advect(1, Vx, Vx0, Vx0, Vy0, dt);
Advect(2, Vy, Vy0, Vx0, Vy0, dt);
Projection(Vx, Vy, Vx0, Vy0);
Diffuse(0, s, density, diff, dt);
Advect(0, density, s, Vx, Vy, dt);
}
private void Start()
{
fluid = FluidCubeCreate(0, 0, 0.1f);
rt = new RenderTexture(N, N, 1);
rt.enableRandomWrite = true;
rt.Create();
rend = GetComponent <Renderer>();
rend.enabled = true;
texture = new Texture2D(rt.width, rt.height);
rend.material.mainTexture = texture;
grid = GetComponent <Grid>();
}
public FluidCube FluidCubeCreate(int diffusion, int viscosity, float dt)
{
FluidCube cube = new FluidCube();
cube.size = N;
cube.dt = dt;
cube.diff = diffusion;
cube.visc = viscosity;
cube.s = new float[N * N];
cube.density = new float[N * N];
cube.Vx = new float[N * N];
cube.Vy = new float[N * N];
cube.Vx0 = new float[N * N];
cube.Vy0 = new float[N * N];
return(cube);
}
void FluidCubeAddDensity(FluidCube cube, int x, int y, float amount)
{
N = cube.size;
cube.density[ArrayIndex(x, y)] += amount;
}
