Minor edits

crates/render/src/ui/util/mod.rs

@@ -9,6 +9,7 @@ use nalgebra::{Point2, Vector2};
 use crate::{RenderInput, RenderState};
 
 /// Represents a rectangular region inside a sprite.
+#[derive(Debug, Clone, Copy)]
 pub(crate) struct SpriteRect {
 	/// The position of the top-left corner of this rectangle, in fractional units.
 	/// (0.0 is left edge of sprite, 1.0 is right edge)
@@ -19,6 +20,18 @@ pub(crate) struct SpriteRect {
 	pub dim: Vector2<f32>,
 }
 
+impl SpriteRect {
+	/// Northeast corner of this rect
+	pub fn ne_corner(&self) -> Point2<f32> {
+		self.pos + Vector2::new(-self.dim.x, self.dim.y) / 2.0
+	}
+
+	/// Southwest corner of this rect
+	pub fn sw_corner(&self) -> Point2<f32> {
+		self.pos + Vector2::new(self.dim.x, -self.dim.y) / 2.0
+	}
+}
+
 pub(super) trait UiElement {
 	fn push_to_buffer_child(
 		&self,