/// <summary>
/// Update all cell's visibility and CUBE's alpha.
/// </summary>
private void UpdateGrid()
{
if (!enabled) return;
Vector3 cursorLayer = cursor.Multipy(viewAxis).Round();
// update cells
for (int y = 0; y < grid.Length; y++)
{
for (int z = 0; z < grid.Length; z++)
{
for (int x = 0; x < grid.Length; x++)
{
var index = new Vector3(x, y, z);
Vector3 currentLayer = index.Multipy(viewAxis).Round();
if (currentLayer == cursorLayer && (grid[y][z][x] == null || cursor == index))
{
cells[y][z][x].SetActive(true);
}
else
{
cells[y][z][x].SetActive(false);
}
}
}
}
// get direction of camera
float direction = (viewAxis == Vector3.right || viewAxis == Vector3.up || viewAxis == Vector3.forward ? 1f : -1f);
// update CUBEs
foreach (var cube in currentBuild)
{
Vector3 depth = (CUBE.AllCUBES[cube.Key.ID].size - Vector3.one).Multipy(viewAxis).Round() * direction;
Vector3 cubePosition = cube.Value.position.Multipy(viewAxis).Round();
Vector3 difference = (cubePosition - depth) - cursorLayer;
// if difference vector is facing down camera forward
foreach (Material mat in cube.Key.renderer.materials) mat.SetFloat(AlphaName, difference.normalized * direction == viewAxis ? nearAlpha : 1f);
}
}
