Oops, now it can run.

data/CSG.obj

@@ -0,0 +1,41 @@
+# File produced by Open Asset Import Library (http://www.assimp.sf.net)
+# (assimp v3.1.187496374)
+
+mtllib CSG.obj.mtl
+
+# 8 vertex positions
+v  0 1 3
+v  1 0 3
+v  1 1 3
+v  0 0 3
+v  0 0 0
+v  1 1 0
+v  1 0 0
+v  0 1 0
+
+# 0 UV coordinates
+
+# 6 vertex normals
+vn 0 0 1
+vn 0 0 -1
+vn 0 -1 0
+vn 1 0 0
+vn 0 1 0
+vn -1 0 0
+
+# Mesh 'OpenSCAD_Model' with 12 faces
+g OpenSCAD_Model
+usemtl DefaultMaterial
+f  1//1 2//1 3//1
+f  2//1 1//1 4//1
+f  5//2 6//2 7//2
+f  6//2 5//2 8//2
+f  5//3 2//3 4//3
+f  2//3 5//3 7//3
+f  2//4 6//4 3//4
+f  6//4 2//4 7//4
+f  6//5 1//5 3//5
+f  1//5 6//5 8//5
+f  5//6 1//6 8//6
+f  1//6 5//6 4//6
+

data/test.obj

@@ -0,0 +1,61 @@
+# File produced by Open Asset Import Library (http://www.assimp.sf.net)
+# (assimp v3.1.187496374)
+
+mtllib test.obj.mtl
+
+# 16 vertex positions
+v  0 0 0
+v  0 1 3
+v  0 1 0
+v  0 0 3
+v  1 0 3
+v  1 1 3
+v  1 1 0
+v  1 0 0
+v  2 0 0
+v  2 1 3
+v  2 1 0
+v  2 0 3
+v  3 0 3
+v  3 1 3
+v  3 1 0
+v  3 0 0
+
+# 0 UV coordinates
+
+# 6 vertex normals
+vn -1 0 0
+vn 0 0 1
+vn 1 0 0
+vn 0 1 0
+vn 0 0 -1
+vn 0 -1 0
+
+# Mesh 'OpenSCAD_Model' with 24 faces
+g OpenSCAD_Model
+usemtl DefaultMaterial
+f  1//1 2//1 3//1
+f  2//1 1//1 4//1
+f  2//2 5//2 6//2
+f  5//2 2//2 4//2
+f  5//3 7//3 6//3
+f  7//3 5//3 8//3
+f  7//4 2//4 6//4
+f  2//4 7//4 3//4
+f  1//5 7//5 8//5
+f  7//5 1//5 3//5
+f  1//6 5//6 4//6
+f  5//6 1//6 8//6
+f  9//1 10//1 11//1
+f  10//1 9//1 12//1
+f  10//2 13//2 14//2
+f  13//2 10//2 12//2
+f  13//3 15//3 14//3
+f  15//3 13//3 16//3
+f  15//4 10//4 14//4
+f  10//4 15//4 11//4
+f  9//5 15//5 16//5
+f  15//5 9//5 11//5
+f  9//6 13//6 12//6
+f  13//6 9//6 16//6
+

data/test.stl

@@ -0,0 +1,170 @@
+solid OpenSCAD_Model
+  facet normal -1 0 0
+    outer loop
+      vertex 0 0 0
+      vertex 0 1 3
+      vertex 0 1 0
+    endloop
+  endfacet
+  facet normal -1 -0 0
+    outer loop
+      vertex 0 1 3
+      vertex 0 0 0
+      vertex 0 0 3
+    endloop
+  endfacet
+  facet normal -0 0 1
+    outer loop
+      vertex 0 1 3
+      vertex 1 0 3
+      vertex 1 1 3
+    endloop
+  endfacet
+  facet normal 0 0 1
+    outer loop
+      vertex 1 0 3
+      vertex 0 1 3
+      vertex 0 0 3
+    endloop
+  endfacet
+  facet normal 1 -0 0
+    outer loop
+      vertex 1 0 3
+      vertex 1 1 0
+      vertex 1 1 3
+    endloop
+  endfacet
+  facet normal 1 0 0
+    outer loop
+      vertex 1 1 0
+      vertex 1 0 3
+      vertex 1 0 0
+    endloop
+  endfacet
+  facet normal 0 1 -0
+    outer loop
+      vertex 1 1 0
+      vertex 0 1 3
+      vertex 1 1 3
+    endloop
+  endfacet
+  facet normal 0 1 0
+    outer loop
+      vertex 0 1 3
+      vertex 1 1 0
+      vertex 0 1 0
+    endloop
+  endfacet
+  facet normal 0 0 -1
+    outer loop
+      vertex 0 0 0
+      vertex 1 1 0
+      vertex 1 0 0
+    endloop
+  endfacet
+  facet normal -0 0 -1
+    outer loop
+      vertex 1 1 0
+      vertex 0 0 0
+      vertex 0 1 0
+    endloop
+  endfacet
+  facet normal 0 -1 0
+    outer loop
+      vertex 0 0 0
+      vertex 1 0 3
+      vertex 0 0 3
+    endloop
+  endfacet
+  facet normal 0 -1 -0
+    outer loop
+      vertex 1 0 3
+      vertex 0 0 0
+      vertex 1 0 0
+    endloop
+  endfacet
+  facet normal -1 0 0
+    outer loop
+      vertex 2 0 0
+      vertex 2 1 3
+      vertex 2 1 0
+    endloop
+  endfacet
+  facet normal -1 -0 0
+    outer loop
+      vertex 2 1 3
+      vertex 2 0 0
+      vertex 2 0 3
+    endloop
+  endfacet
+  facet normal -0 0 1
+    outer loop
+      vertex 2 1 3
+      vertex 3 0 3
+      vertex 3 1 3
+    endloop
+  endfacet
+  facet normal 0 0 1
+    outer loop
+      vertex 3 0 3
+      vertex 2 1 3
+      vertex 2 0 3
+    endloop
+  endfacet
+  facet normal 1 -0 0
+    outer loop
+      vertex 3 0 3
+      vertex 3 1 0
+      vertex 3 1 3
+    endloop
+  endfacet
+  facet normal 1 0 0
+    outer loop
+      vertex 3 1 0
+      vertex 3 0 3
+      vertex 3 0 0
+    endloop
+  endfacet
+  facet normal 0 1 -0
+    outer loop
+      vertex 3 1 0
+      vertex 2 1 3
+      vertex 3 1 3
+    endloop
+  endfacet
+  facet normal 0 1 0
+    outer loop
+      vertex 2 1 3
+      vertex 3 1 0
+      vertex 2 1 0
+    endloop
+  endfacet
+  facet normal 0 0 -1
+    outer loop
+      vertex 2 0 0
+      vertex 3 1 0
+      vertex 3 0 0
+    endloop
+  endfacet
+  facet normal -0 0 -1
+    outer loop
+      vertex 3 1 0
+      vertex 2 0 0
+      vertex 2 1 0
+    endloop
+  endfacet
+  facet normal 0 -1 0
+    outer loop
+      vertex 2 0 0
+      vertex 3 0 3
+      vertex 2 0 3
+    endloop
+  endfacet
+  facet normal 0 -1 -0
+    outer loop
+      vertex 3 0 3
+      vertex 2 0 0
+      vertex 3 0 0
+    endloop
+  endfacet
+endsolid OpenSCAD_Model

src/main.rs

@@ -1,10 +1,43 @@
 extern crate obj;
 extern crate noise;
 
+use std::io::Result;
 use std::path::Path;
+use obj::{Obj, SimplePolygon};
+
+// A function called test that takes in 1 32-bit integer
+// and returns a 32-bit integer.
+/*
+fn test(x: i32) -> i32 {
+    // Yay conditions.
+    if x > 4 {
+        return x;
+    }
+
+    // Normally, we could do this to return.
+    return x + 4;
+    // Where we would need a semicolon because
+    // we are passing the return to the return keyword
+    // rather than just ending the function.
+
+    // This doesn't need a semicolon because it will be
+    // inplicitly returned since it is as the end of the
+    // function definition.
+    x + 4
+}
+*/
 
 fn main() {
-    let obj = obj::Obj::load("data/test.obj").unwrap();
 
-    println!("Postiion: {}", obj.position);
+    let path = Path::new("data/teapot.obj");
+    let maybe_obj: Result<Obj<SimplePolygon>> = Obj::load(&path);
+
+    if let Ok(obj) = maybe_obj {
+        println!("Postiion: {:?}", obj.position);
+    }
+    /*
+    else if Err(error) = maybe_obj {
+
+    }
+    */
 }