fix various issues in snap to road

Cargo.toml

@@ -31,7 +31,7 @@ yakui-wgpu    = { git = "https://github.com/Uriopass/yakui", branch = "dev" }
 yakui-winit   = { git = "https://github.com/Uriopass/yakui", branch = "dev" }
 yakui-core    = { git = "https://github.com/Uriopass/yakui", branch = "dev" }
 yakui-widgets = { git = "https://github.com/Uriopass/yakui", branch = "dev" }
-
+itertools     = { version = "0.13.0", default-features = false }
 mlua          = { version = "0.9.4", features = ["luau"] }
 
 # Set the settings for build scripts and proc-macros.

engine/Cargo.toml

@@ -24,7 +24,7 @@ bytemuck      = "1.7.2"
 image         = { version = "0.25.1", default-features = false, features = ["png"] }
 log           = "0.4.11"
 gltf          = { version = "1.2.0", default-features=false, features=["import", "utils", "names", "extensions", "extras"] }
-itertools     = { version = "0.12.0", default-features = false }
+itertools     = { workspace = true }
 profiling     = { version = "1.0.1", default-features = false  }
 rayon         = "1.6"
 beul          = "1.0.0"

geom/src/line.rs

@@ -15,6 +15,13 @@ impl Line {
         Self { src, dst }
     }
 
+    pub fn new_dir(src: Vec2, dir: Vec2) -> Self {
+        Self {
+            src,
+            dst: src + dir,
+        }
+    }
+
     pub fn intersection_point(&self, other: &Self) -> Option<Vec2> {
         // see https://stackoverflow.com/a/565282
         let r = self.vec();

geom/src/polyline3.rs

@@ -282,6 +282,7 @@ impl PolyLine3 {
     }
 
     #[inline]
+    /// Gives the direction pointing inward the polyline at the first point
     pub fn first_dir(&self) -> Option<Vec3> {
         if self.points.len() >= 2 {
             (self[1] - self[0]).try_normalize()
@@ -291,6 +292,7 @@ impl PolyLine3 {
     }
 
     #[inline]
+    /// Gives the direction pointing outward the polyline at the last point
     pub fn last_dir(&self) -> Option<Vec3> {
         let l = self.points.len();
         if l >= 2 {

native_app/Cargo.toml

@@ -28,6 +28,7 @@ slotmapd      = { version = "1.0", default-features = false }
 rayon         = "1.6"
 profiling     = { version = "1.0.8", default-features = false }
 include_dir   = "0.7.2"
+itertools     = { workspace = true }
 
 [features]
 default = []