//-----------------------------------------------------------------------------
public static void CreateGrid(GridSettings grid,
NativeArray <float> heightmap,
NativeArray <float3> colormap,
NativeArray <float3> normalmap,
NativeArray <float3> flowMap,
Func <float2, int2, CellData> func)
{
var entityManager = World.Active.GetOrCreateManager <EntityManager>();
var entities = new NativeArray <Entity>(grid.cellCount.x * grid.cellCount.y, Allocator.Temp);
entityManager.CreateEntity(Archetypes.Tile, entities);
var cells = new CellData[entities.Length];
for (int ii = 0; ii < entities.Length; ii++)
{
var coord = GridUtilties.Index2Grid(grid, ii);
float2 per = new float2(coord) / grid.cellCount;
cells[ii] = func(per, coord);
}
float inv255 = 1f / 255f;
for (int ii = 0; ii < entities.Length; ii++)
{
int2 coord = GridUtilties.Index2Grid(grid, ii);
var cd = cells[ii];
colormap[ii] = cd.color;
heightmap[ii] = cd.height;
float[] s = new float[8];
for (int i = 0; i < GridUtilties.Offset.Length; ++i)
{
var index = GridUtilties.Grid2Index(grid, coord + GridUtilties.Offset[i]);
if (index != -1)
{
s[i] = cells[index].height;
}
else
{
s[i] = 0.5f;
}
}
var normal = new float3(
-(s[4] - s[6] + 2 * (s[2] - s[3]) + s[5] - s[7]),
cd.height, //.2f,
-(s[7] - s[6] + 2 * (s[1] - s[0]) + s[5] - s[4]));
normalmap[ii] = math.normalize(normal);
normal.y = 0;
normal = math.normalize(normal);
var flow = normal * cd.cost * inv255;
flowMap[ii] = flow;
Archetypes.SetupTile(entityManager, entities[ii], Main.ActiveInitParams.TileDirectionMesh, Main.ActiveInitParams.TileDirectionMaterial, coord, cd.cost, new float3(), grid);
}
entities.Dispose();
}
