Add textured OBJ model rendering

build.rs

@@ -0,0 +1,33 @@
+use std::{env, fs, path::PathBuf};
+
+use anyhow::Result;
+use fs_extra::{copy_items, dir::CopyOptions};
+
+fn main() -> Result<()> {
+    let manifest_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR")?);
+    let source_dir = manifest_dir.join("res");
+    let out_dir = PathBuf::from(env::var("OUT_DIR")?);
+    let resource_dir = out_dir.join("res");
+
+    let mut copy_options = CopyOptions::new();
+    copy_options.overwrite = true;
+
+    println!("cargo:rerun-if-changed={}", source_dir.display());
+
+    if resource_dir.exists() {
+        fs::remove_dir_all(&resource_dir)?;
+    }
+
+    if source_dir.exists() {
+        let items = fs::read_dir(&source_dir)?
+            .map(|entry| entry.map(|entry| entry.path()))
+            .collect::<Result<Vec<_>, _>>()?;
+
+        fs::create_dir_all(&resource_dir)?;
+        copy_items(&items, &resource_dir, &copy_options)?;
+    }
+
+    println!("cargo:rustc-env=RESOURCE_DIR={}", resource_dir.display());
+
+    Ok(())
+}