--- a/grid.jl	Mon Dec 17 16:30:39 2018 +0100
+++ b/grid.jl	Mon Dec 17 16:35:08 2018 +0100
@@ -1,1 +1,54 @@
-abstract type BoundaryID end
+module grid
+
+abstract type Grid end
+
+function numberOfDimensions(grid::Grid)
+    error("Not yet implemented")
+end
+
+function numberOfPoints(grid::Grid)
+    error("Not yet implemented")
+end
+
+function points(grid::Grid)
+    error("Not yet implemented")
+end
+
+abstract type BoundaryId end
+
+# Move to seperate file.
+struct EquidistantGrid <: Grid
+    nPointsPerDim::Vector{Int}
+    limits::Vector{Pair{Real, Real}}
+    function EquidistantGrid(nPointsPerDim, lims)
+        @assert length(lims) == length(nPointsPerDim)
+        return new(nPointsPerDim, lims)
+    end
+end
+
+function numberOfDimensions(grid::EquidistantGrid)
+    return length(grid.nPointsPerDim)
+end
+
+function numberOfPoints(grid::EquidistantGrid)
+    numberOfPoints = grid.nPointsPerDim[1];
+    for i = 2:length(grid.nPointsPerDim);
+        numberOfPoints = numberOfPoints*grid.nPointsPerDim[i]
+    end
+    return numberOfPoints
+end
+
+function points(grid::EquidistantGrid)
+    points = Vector{Real}(undef, numberOfPoints(grid))
+    for i = 1:numberOfDimensions(grid)
+        lims = limitsForDimension(grid,i)
+        points = range(lims.first, stop=lims.second, length=grid.nPointsPerDim[i])
+    end
+    return points
+end
+
+function limitsForDimension(grid::EquidistantGrid, dim::Int)
+    return grid.limits[dim]
+end
+
+end