1 files changed, 169 insertions, 0 deletions
diff --git a/bindgen/rust/celeritas-sys/examples/scene.rs b/bindgen/rust/celeritas-sys/examples/scene.rs
new file mode 100644
index 0000000..f3ea135
--- /dev/null
+++ b/bindgen/rust/celeritas-sys/examples/scene.rs
@@ -0,0 +1,169 @@
+use std::{
+    ffi::CString,
+    fs::{self, File},
+    io::Write,
+    path::Path,
+    ptr::{self, addr_of_mut},
+};
+
+use serde::{Deserialize, Serialize};
+
+use celeritas_sys::*;
+use egui_backend::egui::{vec2, Pos2, Rect};
+use egui_glfw as egui_backend;
+use egui_glfw::glfw::{fail_on_errors, Context};
+
+use egui_glfw::glfw;
+
+// use celeritas_sys::{ffi::*, SerializableScene};
+use celeritas_sys::*;
+
+/// Wrapper around a string that is the path to a gltf model **relative** to the configured
+/// `ASSETS` folder
+#[derive(Debug, Serialize, Deserialize)]
+pub struct ModelPath(String);
+
+/// Scene that can be saved and loaded from disk
+#[derive(Debug, Serialize, Deserialize)]
+pub struct SerializableScene {
+    pub sun: DirectionalLight,
+    pub point_lights: [Option<PointLight>; 4],
+    pub camera_orientation: (Vec3, Vec3),
+    pub models: Vec<ModelPath>,
+}
+
+// Runtime Scene <-> Serialized Scene
+
+impl SerializableScene {
+    /// TODO: docs
+    pub fn store_to_file(&self, filepath: &Path) {
+        let mut file = File::create(filepath).expect("creation failed");
+        let json = serde_json::to_string(&self).expect("serialize failed");
+        file.write(&json.as_bytes()).expect("writing failed");
+    }
+    /// TODO: docs
+    pub fn load_from_file(filepath: &Path) -> Self {
+        let contents = fs::read_to_string(filepath).expect("Filepath should be open and read-able");
+
+        serde_json::from_str(&contents).expect("Should be deserializable")
+    }
+}
+
+fn main() {
+    unsafe {
+        let p: *mut GLFWwindow = ptr::null_mut();
+        Core_Bringup(p);
+
+        // let core = get_global_core();
+
+        let camera_pos = Vec3 {
+            x: 18.9,
+            y: 10.6,
+            z: 11.6,
+        };
+        let camera_front = Vec3 {
+            x: -0.6,
+            y: -0.2,
+            z: -0.7,
+        };
+        let mut camera = Camera_Create(
+            camera_pos,
+            camera_front,
+            Vec3 {
+                x: 0.0,
+                y: 1.0,
+                z: 0.0,
+            },
+            45.0,
+        );
+        SetCamera(camera);
+
+        let mut cube_geo = Geo_CreateCuboid(f32x3 {
+            x: 2.0,
+            y: 2.0,
+            z: 2.0,
+        });
+
+        let scene = SerializableScene {
+            sun: DirectionalLight {
+                direction: Vec3 {
+                    x: 0.0,
+                    y: 1.0,
+                    z: 0.0,
+                },
+                ambient: Vec3 {
+                    x: 1.0,
+                    y: 1.0,
+                    z: 1.0,
+                },
+                diffuse: Vec3 {
+                    x: 1.0,
+                    y: 1.0,
+                    z: 1.0,
+                },
+                specular: Vec3 {
+                    x: 0.0,
+                    y: 0.0,
+                    z: 0.0,
+                },
+            },
+            point_lights: [None, None, None, None],
+            camera_orientation: (camera_pos, camera_front),
+            models: vec![],
+        };
+
+        let scene_path = Path::new("default_scene.json");
+        scene.store_to_file(scene_path);
+
+        let rehydrated_scene = SerializableScene::load_from_file(scene_path);
+        dbg!(&rehydrated_scene);
+
+        // let mut crate_mesh = Mesh_Create(addr_of_mut!(cube_geo), false);
+        // let albedo_map = TextureLoadFromFile(
+        //     CString::new("assets/demo/crate/Wood_Crate_001_basecolor.jpg")
+        //         .unwrap()
+        //         .as_ptr() as *const i8,
+        // );
+        // let roughness_map = TextureLoadFromFile(
+        //     CString::new("assets/demo/crate/Wood_Crate_001_roughness.jpg")
+        //         .unwrap()
+        //         .as_ptr() as *const i8,
+        // );
+        // let normal_map = TextureLoadFromFile(
+        //     CString::new("assets/demo/crate/Wood_Crate_001_normal.jpg")
+        //         .unwrap()
+        //         .as_ptr() as *const i8,
+        // );
+        // let ao_map = TextureLoadFromFile(
+        //     CString::new("assets/demo/crate/Wood_Crate_001_ambientOcclusion.jpg")
+        //         .unwrap()
+        //         .as_ptr() as *const i8,
+        // );
+        // let name: [i8; 64] = [0; 64];
+        // let mut crate_mat = Material {
+        //     name: name,
+        //     kind: 0,
+        //     param_albedo: Vec3 {
+        //         x: 0.0,
+        //         y: 0.0,
+        //         z: 0.0,
+        //     },
+        //     param_metallic: 0.0,
+        //     param_roughness: 0.0,
+        //     param_ao: 0.0,
+        //     pbr_albedo_map: albedo_map,
+        //     pbr_normal_map: normal_map,
+        //     metal_roughness_combined: true,
+        //     pbr_metallic_map: TextureHandle { raw: 99999 },
+        //     pbr_roughness_map: roughness_map,
+        //     pbr_ao_map: ao_map,
+        // };
+        // let crate_renderent = RenderEnt {
+        //     mesh: addr_of_mut!(crate_mesh),
+        //     material: addr_of_mut!(crate_mat),
+        //     affine: mat4_ident(),
+        //     casts_shadows: true,
+        // };
+        // let mut render_ents: [RenderEnt; 1] = [crate_renderent];
+    }
+}