diff --git a/src/bin/flat.rs b/src/bin/flat.rs
index 3b374e0..6777c3d 100644
--- a/src/bin/flat.rs
+++ b/src/bin/flat.rs
@@ -93,7 +93,7 @@ mod riemann {
 
 		fn metric(&self, pos: Vec2) -> Mat2 {
 			let h = self.halfmetric(pos);
-			transpose(&h.ortho) * diagonal(h.diag * h.diag) * h.ortho
+			transpose(&h.ortho) * diagonal(pow2(h.diag)) * h.ortho
 		}
 
 		fn invmetric(&self, pos: Vec2) -> Mat2 {
@@ -112,6 +112,7 @@ mod riemann {
 		fn normalize(&self, at: Vec2, v: Vec2) -> Vec2 {
 			v / self.length(at, v)
 		}
+
 		fn globalize(&self, at: Vec2, v: Vec2) -> Vec2 {
 			let h = self.halfmetric(at);
 			transpose(&h.ortho) * diagonal(Vec2::from_s(1.0) / h.diag) * h.ortho * v
@@ -188,10 +189,6 @@ mod riemann {
 	}
 }
 
-fn sqr(x: f32) -> f32 {
-	return x * x;
-}
-
 fn smoothstep(x: f32) -> f32 {
 	return 3.0 * x * x - 2.0 * x * x * x;
 }