/// <summary>
/// Creates a new Gray-Scott Diffusion Reaction with the given parameters
/// </summary>
public GrayScottDiffusionReaction(Grid grid, double feedA, double killB, LaplacianFunction lap)
{
Grid = grid;
FeedA = feedA;
KillB = killB;
Lap = lap;
iterations = 0;
}
public Form1()
{
InitializeComponent();
Cell prefabCell = new Cell
{
{ GrayScottDiffusionReaction.CHEMICAL_A, 0 },
{ GrayScottDiffusionReaction.CHEMICAL_B, 0 }
};
Grid grid = new Grid(GRID_SIZE, prefabCell);
grid.Seed(grid.Size / 2, grid.Size / 2, 2, 2, GrayScottDiffusionReaction.CHEMICAL_B, 1); // Seed central area with B = 1
reaction = new GrayScottDiffusionReaction(grid, FEED_A, KILL_B, new PerpendicularNeighboursLaplacianFunction());
renderer = new NETGridRenderer(grid, new GreyscaleShader())
{
CellWidth = 4,
CellHeight = 4
};
}
/// <summary>
/// A grid renderer that draws each cell in the grid with the given dimensions
/// </summary>
public GridRenderer(Grid grid, IShader shader)
{
Grid = grid;
Shader = shader;
}
/// <summary>
/// Creates a renderer object that uses the .NET graphics library to renderer the given grid. A graphics object must be passed to
/// this renderer prior to any draw calls or a null reference exception will be raised.
/// </summary>
public NETGridRenderer(Grid grid, IShader shader)
: base(grid, shader)
{
/* Nothing */
}
public void Update()
{
// Create new array of cells so as to not overwrite old values while still performing calculations
Grid grid = new Grid(Grid.Size);
// Iterate through entire grid of cells
for (int column = 0; column < Grid.Size; column++)
{
for (int row = 0; row < Grid.Size; row++)
{
// Calculate next iteration of A and B
double A = NextA(column, row);
double B = NextB(column, row);
// Create new cell containing new A and B concentrations
grid[column, row] = new Cell
{
{ CHEMICAL_A, A },
{ CHEMICAL_B, B }
};
}
}
// Assign new array of cells to grid object, overwritting old array
Grid.Overwrite(grid);
// Keep track of the number of iterations this reaction has been running for
iterations++;
}
/// <summary>
/// Overwrites the concentrations stored in this grid's cells with the concentrations from the cells in the given grid.
/// </summary>
public void Overwrite(Grid grid)
{
Cells = grid.Cells;
}
public void GrayScottDiffusionReactionTest()
{
// New grid with concentrations set to 0
Grid grid = new Grid(3);
}