Added -s mtl option

src/model/material.rs

@@ -14,7 +14,7 @@ pub struct Material {
     pub diffuse: Vector3<f32>,
 
     /// Map linking each texture map to its file path.
-    pub textures: HashMap<String, String>,
+    pub textures: HashMap<String, (String, Vector3<f32>)>,
 
     /// Instructions that are unknown.
     ///

src/model/mod.rs

@@ -102,7 +102,7 @@ pub struct Model {
     pub materials: HashMap<String, Material>,
 
     /// Map associating the name of a texture and the real texture.
-    pub textures: HashMap<String, Rc<SrgbTexture2d>>,
+    pub textures: HashMap<String, (Rc<SrgbTexture2d>, Vector3<f32>)>,
 
     /// The list of parts of the model.
     pub parts: Vec<Part>,
@@ -544,15 +544,15 @@ impl Model {
 
     /// Builds the SrgbTextures for rendering.
     pub fn build_texture_for_material(&mut self, material: &Material, renderer: &Renderer) {
-        if let Some(path) = material.textures.get("map_Kd") {
+        if let Some((path, size)) = material.textures.get("map_Kd") {
             let texture = renderer.make_texture(path);
             // Don't need to insert multiple times the same texture
-            self.textures.entry(path.to_owned()).or_insert(Rc::new(texture));
+            self.textures.entry(path.to_owned()).or_insert((Rc::new(texture), *size));
         };
     }
 
     /// Returns the rendering texture.
-    pub fn get_texture_by_name(&self, name: &str) -> Option<&Rc<SrgbTexture2d>> {
+    pub fn get_texture_by_name(&self, name: &str) -> Option<&(Rc<SrgbTexture2d>, Vector3<f32>)> {
         self.textures.get(name)
     }
 
@@ -562,7 +562,7 @@ impl Model {
     }
 
     /// Returns a ref mut to the table of textures.
-    pub fn textures_mut(&mut self) -> &mut HashMap<String, Rc<SrgbTexture2d>> {
+    pub fn textures_mut(&mut self) -> &mut HashMap<String, (Rc<SrgbTexture2d>, Vector3<f32>)> {
         &mut self.textures
     }
 }