Multiple objects

src/example_client.rs

@@ -8,7 +8,7 @@ use cgmath::{perspective, vec3, Deg, Matrix4, Point3};
 use imgui_glfw_rs::glfw;
 
 pub struct ExampleClient {
-    model: ModelComponent,
+    models: Vec<ModelComponent>,
     camera: Camera,
     shader: shader::Shader,
     show_object_info: bool,
@@ -17,14 +17,42 @@ pub struct ExampleClient {
 
 impl ExampleClient {
     pub fn create() -> ExampleClient {
-        let model = ModelComponent {
+        let tree = ModelComponent {
+            transform: Transform{ position: vec3(10.0,0.0,26.0),
+                scale: vec3(2.5, 2.5, 2.5),
+                ..Transform::default()},
+            model: model::Model::new_ext("resources/objects/tree/tree_6_d.obj",
+            Some("tree_e.png")),
+        };
+        let tree2 = ModelComponent {
+            transform: Transform{ position: vec3(-9.0,0.0,-15.0),
+                scale: vec3(2.5, 2.5, 2.5),
+                ..Transform::default()},
+            model: model::Model::new_ext("resources/objects/tree/tree_6_c.obj",
+            Some("tree_e.png")),
+        };
+        let tree3 = ModelComponent {
+            transform: Transform{ position: vec3(15.0,0.0,-7.0),
+                scale: vec3(2.5, 2.5, 2.5),
+                ..Transform::default()},
+            model: model::Model::new_ext("resources/objects/tree/tree_6_c.obj",
+            Some("tree_e.png")),
+        };
+        let ground = ModelComponent {
+            transform: Transform {
+                scale: vec3(0.5, 0.5, 0.5),
+                ..Transform::default()
+            },
+            model: model::Model::new("resources/objects/ground/ground.obj"),
+        };
+        let robot = ModelComponent {
             transform: Transform::default(),
             model: model::Model::new("resources/objects/robot/robot.obj"),
         };
         ExampleClient {
             show_camera_info: true,
             show_object_info: false,
-            model: model,
+            models: vec!(tree,tree2,tree3,ground, robot),
             camera: Camera {
                 position: Point3::new(0.0, 8.0, 13.0),
                 front: vec3(0.0, -0.4, -1.0),
@@ -57,7 +85,9 @@ impl Client for ExampleClient {
         self.shader.set_mat4(c_str!("projection"), &projection);
         self.shader.set_mat4(c_str!("view"), &view);
 
-        self.model.draw(&self.shader);
+        for model in self.models.iter() {
+            model.draw(&self.shader);
+        }
     }
     fn update(&mut self, _engine: &mut Engine) {}
 
@@ -125,13 +155,14 @@ impl Client for ExampleClient {
             menu_bar.end(ui);
         }
         if self.show_camera_info {
-            let text = format!("{:?}", self.camera).replace("{","{\n").replace("}","\n}").replace("],","],\n");
+            let text = format!("{:?}", self.camera)
+                .replace("{", "{\n")
+                .replace("}", "\n}")
+                .replace("],", "],\n");
             Window::new(im_str!("CameraInfo"))
                 .size([300.0, 300.0], Condition::Always)
-                    .position(
-                        [50.0, 50.0],
-                        Condition::Always,
-                    ).title_bar(false)
+                .position([50.0, 50.0], Condition::Always)
+                .title_bar(false)
                 .scroll_bar(false)
                 .collapsible(false)
                 .build(&ui, || {
@@ -146,7 +177,7 @@ impl Client for ExampleClient {
                 .size([250.0, 250.0], Condition::FirstUseEver)
                 .opened(&mut show_window)
                 .build(&ui, || {
-                    let mut selected_mut = vec![&mut self.model.transform];
+                    let mut selected_mut = vec![&mut self.models[0].transform];
                     <Transform as imgui_inspect::InspectRenderStruct<Transform>>::render_mut(
                         &mut selected_mut,
                         "Object info",

src/gaia/components.rs

@@ -1,6 +1,6 @@
 use crate::gaia::model::Model;
 use crate::gaia::shader::Shader;
-use cgmath::{vec3, Matrix4, Vector3, Rad};
+use cgmath::{vec3, Matrix4, Rad, Vector3};
 use imgui_glfw_rs::imgui;
 use imgui_inspect::InspectArgsDefault;
 use imgui_inspect::InspectRenderDefault;
@@ -89,7 +89,7 @@ pub struct ModelComponent {
 }
 
 impl ModelComponent {
-    pub unsafe fn draw(&mut self, shader: &Shader) {
+    pub unsafe fn draw(&self, shader: &Shader) {
         let matrix = self.transform.get_matrix();
 
         shader.set_mat4(c_str!("model"), &matrix);

src/gaia/engine.rs

@@ -70,7 +70,10 @@ impl Engine {
                 Window::new(im_str!("EngineInfo"))
                     .size(size, Condition::Always)
                     .position(
-                        [self.window_size.0 - size[0] - offset, self.window_size.1 - size[1] - offset],
+                        [
+                            self.window_size.0 - size[0] - offset,
+                            self.window_size.1 - size[1] - offset,
+                        ],
                         Condition::Always,
                     )
                     .no_decoration()

src/gaia/model.rs

@@ -18,7 +18,7 @@ pub struct Model {
 
 impl Model {
     /// constructor, expects a filepath to a 3D model.
-    pub fn new(path: &str) -> Model {
+    pub fn new_ext(path: &str, diff_texture: Option<&str>) -> Model {
         let pathObj = Path::new(path);
         let mut model = Model {
             meshes: Vec::<Mesh>::new(),
@@ -30,10 +30,14 @@ impl Model {
                 .unwrap()
                 .into(),
         };
-        model.load_model(path);
+        model.load_model(path, diff_texture);
         model
     }
 
+    pub fn new(path: &str) -> Model {
+        Model::new_ext(path, None)
+    }
+
     pub fn Draw(&self, shader: &Shader) {
         for mesh in &self.meshes {
             unsafe {
@@ -43,7 +47,7 @@ impl Model {
     }
 
     // loads a model from file and stores the resulting meshes in the meshes vector.
-    fn load_model(&mut self, path: &str) {
+    fn load_model(&mut self, path: &str, diffuse_path: Option<&str>) {
         let path = Path::new(path);
         println!("Started loading model from path: {}", path.display());
 
@@ -99,6 +103,16 @@ impl Model {
                     textures.push(texture);
                 }
             // NOTE: no height maps
+            } else if diffuse_path.is_some() {
+                println!("Loading {}", &diffuse_path.unwrap());
+                let texture = self.load_material_texture(&diffuse_path.unwrap(), "texture_diffuse");
+                textures.push(texture);
+            } else {
+                println!(
+                    "There are no materials with id {} for: {}",
+                    mesh.material_id.unwrap_or(404usize),
+                    path.display()
+                );
             }
 
             self.meshes.push(Mesh::new(vertices, indices, textures));