From 3331150162e34471bf0294bdb61a1a748cb94ee5 Mon Sep 17 00:00:00 2001
From: metamuffin <metamuffin@disroot.org>
Date: Tue, 28 Jan 2025 14:50:56 +0100
Subject: server+world: tangent handedness

---
 shared/src/helper.rs    | 38 +++++++++++++++++++++++++++++++++++++-
 shared/src/lib.rs       |  2 +-
 shared/src/resources.rs |  4 ++--
 3 files changed, 40 insertions(+), 4 deletions(-)

(limited to 'shared/src')

diff --git a/shared/src/helper.rs b/shared/src/helper.rs
index 366ea52..be7d929 100644
--- a/shared/src/helper.rs
+++ b/shared/src/helper.rs
@@ -16,7 +16,7 @@
 */
 use crate::packets::{Data, Message, Object, Resource};
 use anyhow::Result;
-use glam::{Affine3A, Vec2, Vec3, Vec3A};
+use glam::{Affine3A, Vec2, Vec3, Vec3A, Vec4};
 use std::{
     borrow::Cow,
     io::{Read, Write},
@@ -122,6 +122,25 @@ impl ReadWrite for Vec<Vec3> {
             .collect())
     }
 }
+impl ReadWrite for Vec<Vec4> {
+    fn write(&self, w: &mut dyn Write) -> Result<()> {
+        for e in self {
+            e.write(w)?;
+        }
+        Ok(())
+    }
+    fn read(r: &mut dyn Read) -> Result<Self> {
+        let mut buf = Vec::new();
+        r.read_to_end(&mut buf)?;
+        Ok(buf
+            .into_iter()
+            .array_chunks::<{ size_of::<f32>() }>()
+            .map(f32::from_be_bytes)
+            .array_chunks::<4>()
+            .map(Vec4::from_array)
+            .collect())
+    }
+}
 impl ReadWrite for Vec<Vec2> {
     fn write(&self, w: &mut dyn Write) -> Result<()> {
         for e in self {
@@ -382,6 +401,23 @@ impl ReadWrite for Vec3A {
         Ok(Self::new(f32::read(r)?, f32::read(r)?, f32::read(r)?))
     }
 }
+impl ReadWrite for Vec4 {
+    fn write(&self, w: &mut dyn Write) -> Result<()> {
+        self.x.write(w)?;
+        self.y.write(w)?;
+        self.z.write(w)?;
+        self.w.write(w)?;
+        Ok(())
+    }
+    fn read(r: &mut dyn Read) -> Result<Self> {
+        Ok(Self::new(
+            f32::read(r)?,
+            f32::read(r)?,
+            f32::read(r)?,
+            f32::read(r)?,
+        ))
+    }
+}
 impl ReadWrite for Vec3 {
     fn write(&self, w: &mut dyn Write) -> Result<()> {
         self.x.write(w)?;
diff --git a/shared/src/lib.rs b/shared/src/lib.rs
index e6b296e..9c3e863 100644
--- a/shared/src/lib.rs
+++ b/shared/src/lib.rs
@@ -28,4 +28,4 @@ pub mod resources;
 pub mod store;
 pub mod tree;
 
-pub use glam::{Affine3A, Mat3A, Vec2, Vec3A, vec2, vec3a};
+pub use glam::{Affine3A, Mat3A, Vec2, Vec3A, Vec4, vec2, vec3a, vec4};
diff --git a/shared/src/resources.rs b/shared/src/resources.rs
index 2c94d05..f2b7859 100644
--- a/shared/src/resources.rs
+++ b/shared/src/resources.rs
@@ -16,7 +16,7 @@
 */
 use crate::{helper::ReadWrite, packets::Resource};
 use anyhow::Result;
-use glam::{Affine3A, Vec2, Vec3A};
+use glam::{Affine3A, Vec2, Vec3A, Vec4};
 use log::warn;
 use std::{
     borrow::Cow,
@@ -65,7 +65,7 @@ pub struct MeshPart {
     pub g_double_sided: Option<()>,
     pub va_position: Option<Resource<Vec<Vec3A>>>,
     pub va_normal: Option<Resource<Vec<Vec3A>>>,
-    pub va_tangent: Option<Resource<Vec<Vec3A>>>,
+    pub va_tangent: Option<Resource<Vec<Vec4>>>,
     pub va_texcoord: Option<Resource<Vec<Vec2>>>,
     pub va_roughness: Option<Resource<Vec<f32>>>,
     pub va_metallic: Option<Resource<Vec<f32>>>,
-- 
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