Textures are now shared between materials

src/model/mod.rs

@@ -136,10 +136,12 @@ impl Model {
         let normal_offset = self.normals.len();
         let face_offset = self.faces.len();
 
+        // Merge the elements
         self.vertices.append(&mut other.vertices);
         self.texture_coordinates.append(&mut other.texture_coordinates);
         self.normals.append(&mut other.normals);
 
+        // Merge the parts and faces
         for part in &mut other.parts {
             let mut new_part = Part::new(part.material_name.clone());
             for face in &mut part.faces {
@@ -161,6 +163,7 @@ impl Model {
             self.parts.push(new_part);
         }
 
+        // Merge the materials
         for (name, material) in other.materials {
             let entry = self.materials.entry(name);
             if let Entry::Occupied(_) = entry {
@@ -169,6 +172,16 @@ impl Model {
                 entry.or_insert(material);
             }
         }
+
+        // Merge the textures
+        for (name, texture) in other.textures {
+            let entry = self.textures.entry(name);
+            if let Entry::Occupied(_) = entry {
+                // return Error;
+            } else {
+                entry.or_insert(texture);
+            }
+        }
     }
 
     /// Creates a model from a file.

src/programs/viewer.rs

@@ -11,10 +11,7 @@ use clap::{App, Arg};
 
 use glium::Display;
 use glium::glutin;
-use glium::glutin::{
-    EventsLoop,
-    WindowBuilder,
-};
+use glium::glutin::{EventsLoop, WindowBuilder};
 
 use glium::glutin::Event;
 use glium::glutin::WindowEvent;
@@ -25,8 +22,7 @@ use model_converter::math::bounding_box::BoundingBox3;
 use model_converter::math::vector::Vector3;
 use model_converter::parser::parse;
 use model_converter::renderer::Renderer;
-use model_converter::controls::OrbitControls;
-use model_converter::controls::FirstPersonControls;
+use model_converter::controls::{OrbitControls, FirstPersonControls};
 use model_converter::camera::Camera;
 
 fn as_millis(duration: Duration) -> u64 {