Transform

src/example_client.rs

@@ -1,29 +1,30 @@
 
 use crate::gaia::camera::*;
-use crate::gaia::consts;
+use crate::gaia::{consts,macros};
 use crate::gaia::*;
-#[macro_use]
 use imgui_glfw_rs::glfw;
-use crate::gaia::macros;
+use crate::gaia::components::{Transform,ModelComponent};
 use crate::gaia::engine::Engine;
 use crate::gaia::client::Client;
 use cgmath::{perspective, vec3, Deg, Matrix4, Point3, Rad, Vector3};
-macro_rules! c_str {
-    ($literal:expr) => {
-        std::ffi::CStr::from_bytes_with_nul_unchecked(concat!($literal, "\0").as_bytes())
-    };
-}
 
 pub struct ExampleClient {
-    model: model::Model,
+    model: ModelComponent,
     camera: Camera,
     shader: shader::Shader,
 }
 
 impl ExampleClient {
     pub fn create() -> ExampleClient {
-        ExampleClient {
+        let mut t = Transform::default();
+        t.position = vec3(3.0, -1.75, -1.25);
+        t.scale = vec3(0.2,0.1,0.2);
+        let model = ModelComponent {
+            transform: t,
             model: model::Model::new("resources/objects/nanosuit/nanosuit.obj"),
+        };
+        ExampleClient {
+            model: model,
             camera: Camera {
                 position: Point3::new(0.0, 0.0, 3.0),
                 ..Camera::default()
@@ -50,11 +51,8 @@ impl Client for ExampleClient {
         let view = self.camera.get_view_matrix();
         self.shader.setMat4(c_str!("projection"), &projection);
         self.shader.setMat4(c_str!("view"), &view);
-
+        
-        let mut m = Matrix4::<f32>::from_translation(vec3(3.0, -1.75, -1.25)); // translate it down so it's at the center of the scene
+        self.model.draw(&self.shader);
-        m = m * Matrix4::from_scale(0.2); // it's a bit too big for our scene, so scale it down
-        self.shader.setMat4(c_str!("model"), &m);
-        self.model.Draw(&self.shader);
     }
     fn update(&mut self, engine: &mut Engine) {
 

src/gaia/components.rs

@@ -0,0 +1,44 @@
+use crate::gaia::*;
+use crate::gaia::macros;
+use cgmath::{perspective, vec3, Deg, Matrix4, Point3, Rad, Vector3};
+use crate::gaia::model::Model;
+use crate::gaia::shader::Shader;
+
+pub struct Transform {
+    pub position: Vector3<f32>,
+    pub scale: Vector3<f32>,
+    pub rotation: Vector3<f32>,
+}
+
+impl Default for Transform {
+    fn default() -> Transform {
+        Transform {
+            position: vec3(0.0,0.0,0.0),
+            scale: vec3(1.0,1.0,1.0),
+            rotation: vec3(0.0,0.0,0.0),
+        }
+    }
+}
+
+impl Transform {
+    pub fn get_matrix(&self) -> Matrix4<f32> {
+        let mut m = Matrix4::<f32>::from_translation(self.position);
+        m = m * Matrix4::from_nonuniform_scale(self.scale.x,self.scale.y,self.scale.z);
+
+        m
+    }
+}
+
+pub struct ModelComponent {
+    pub model: Model,
+    pub transform: Transform,
+}
+
+impl ModelComponent {
+    pub unsafe fn draw(&mut self, shader: &Shader ) {
+        let matrix = self.transform.get_matrix();
+
+        shader.setMat4(c_str!("model"), &matrix);
+        self.model.Draw(&shader);
+    }
+}

src/gaia/engine.rs

@@ -65,12 +65,13 @@ impl Engine {
 
             {
                 use imgui::*;
+                let fps  = 1.0 / delta_time;
                 let mut info = self.bg_info;
                 Window::new(im_str!("Hello world"))
                     .size([300.0, 110.0], Condition::FirstUseEver)
                     .build(&ui, || {
                         ui.text(im_str!("Hello world!"));
-                        ui.text(im_str!("こんにちは世界！"));
+                        ui.text(format!("{:.0}", fps));
                         ui.text(im_str!("This...is...imgui-rs!"));
                         ui.separator();
                         ui.text(format!("Mouse position: ({:.1},{:.1})", last_x, last_y));

src/gaia/macros.rs

@@ -1,3 +1,5 @@
+#![macro_use]
+
 /// Macro to get c strings from literals without runtime overhead
 /// Literal must not contain any interior nul bytes!
 macro_rules! c_str {

src/gaia/mod.rs

@@ -1,9 +1,9 @@
+pub mod macros;
 pub mod camera;
+pub mod components;
 pub mod client;
 pub mod consts;
 pub mod utils;
-#[macro_use]
-pub mod macros;
 pub mod bg_info;
 pub mod engine;
 pub mod mesh;

src/main.rs

@@ -4,6 +4,7 @@ extern crate gl;
 extern crate image;
 extern crate imgui_glfw_rs;
 use human_panic::setup_panic;
+#[macro_use]
 mod gaia;
 mod example_client;
 use crate::gaia::engine::Engine;