ft (wip): deserialization

src/scenes/raw_camera.rs

@@ -0,0 +1,61 @@
+use serde::Deserialize;
+
+use crate::{camera::Camera, vec3::Vec3};
+
+#[derive(Deserialize)]
+pub struct RawCamera {
+    // output
+    image_width: u32, // TODO: test these are now explicitly required (and that default impl does
+    // not make these optional)
+    image_height: u32,
+
+    // raytracing
+    #[serde(default)]
+    anti_alias_rate: u32,
+    #[serde(default)]
+    max_depth: u32,
+
+    // camera
+    #[serde(default)]
+    fov: f32,
+    #[serde(default)]
+    look_from: Vec3,
+    #[serde(default)]
+    look_at: Vec3,
+    #[serde(default)]
+    vup: Vec3,
+}
+
+impl Default for RawCamera {
+    fn default() -> Self {
+        Self {
+            image_width: 400,
+            image_height: 300,
+            anti_alias_rate: 1,
+            max_depth: 10,
+            fov: 70.,
+            look_from: Vec3::new(0., 0., 0.),
+            look_at: Vec3::new(0., 0., -1.),
+            vup: Vec3::new(0., 1., 0.),
+        }
+    }
+}
+
+impl TryFrom<RawCamera> for Camera {
+    type Error = String;
+
+    fn try_from(raw: RawCamera) -> Result<Self, Self::Error> {
+        let c = Camera::new_full(
+            raw.image_width,
+            raw.image_height,
+            raw.anti_alias_rate,
+            raw.max_depth,
+            raw.fov,
+            raw.look_from,
+            raw.look_at,
+            raw.vup,
+        );
+
+        Ok(c)
+    }
+}