From cbf9206631fdff0053051b6317d1b6f70618e554 Mon Sep 17 00:00:00 2001
From: Fletcher Porter <me@fletcherporter.com>
Date: Tue, 17 Dec 2024 17:15:02 -0800
Subject: [PATCH] Provide feature parity for `Projection` with Godot

The only missing feature was indexing, which I did in a type-safe
manner.

This was a part of the December 2024 Mini Hackathon.
---
 godot-core/src/builtin/projection.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/godot-core/src/builtin/projection.rs b/godot-core/src/builtin/projection.rs
index ace645f0a..46bc74509 100644
--- a/godot-core/src/builtin/projection.rs
+++ b/godot-core/src/builtin/projection.rs
@@ -447,6 +447,7 @@ impl Projection {
     /// added to the first and second values of the final column respectively.
     ///
     /// _Godot equivalent: `Projection.jitter_offseted()`_
+    #[doc(alias = "jitter_offseted")]
     #[must_use]
     pub fn jitter_offset(&self, offset: Vector2) -> Self {
         Self::from_cols(
@@ -502,6 +503,19 @@ impl Mul<Vector4> for Projection {
     }
 }
 
+impl std::ops::Index<Vector4Axis> for Projection {
+    type Output = Vector4;
+
+    fn index(&self, index: Vector4Axis) -> &Self::Output {
+        match index {
+            Vector4Axis::X => &self.cols[0],
+            Vector4Axis::Y => &self.cols[1],
+            Vector4Axis::Z => &self.cols[2],
+            Vector4Axis::W => &self.cols[3],
+        }
+    }
+}
+
 impl ApproxEq for Projection {
     fn approx_eq(&self, other: &Self) -> bool {
         for i in 0..4 {