diff --git a/geometry.lua b/geometry.lua
index 060f3ee..7a35b0a 100644
--- a/geometry.lua
+++ b/geometry.lua
@@ -28,18 +28,7 @@ local function transform_quadri(X, Y, x, y)
 	return xc, yc
 end
 
-local function area(X, Y) -- Signed area of polygon, in function of direction of rotation. Clockwise = positive.
-	local n = #X
-	local sum = X[1]*Y[n] - X[n]*Y[1]
-	for i=2, n do
-		sum = sum + X[i]*Y[i-1] - X[i-1]*Y[i]
-	end
-
-	return sum/2
-end
-
 return {
 	distance_to_segment = distance_to_segment,
 	transform_quadri = transform_quadri,
-	area = area,
 }
diff --git a/init.lua b/init.lua
index 2c03e8b..5ae0e98 100644
--- a/init.lua
+++ b/init.lua
@@ -49,11 +49,6 @@ local function index(x, z)
 	return z*X+x+1
 end
 
-local function get_point_location(x, z)
-	local i = index(x, z)
-	return x+offset_x[i], z+offset_z[i]
-end
-
 local function interp(v00, v01, v11, v10, xf, zf)
 	local v0 = v01*xf + v00*(1-xf)
 	local v1 = v11*xf + v10*(1-xf)