rtiow: new data.json format to support better debugging.

rtiow/src/output.rs

@@ -24,6 +24,23 @@ lazy_static! {
     static ref DEBUGGER: Arc<Mutex<Debugger>> = Arc::new(Mutex::new(Debugger::new()));
 }
 
+#[derive(Serialize)]
+struct ImageMetadata {
+    name: String,
+    image: String,
+    binary: String,
+    ratio: f32,
+    size: (usize, usize),
+    format: ImageType,
+}
+#[derive(Serialize)]
+#[serde(rename_all = "camelCase")]
+struct Data {
+    timestamp: i64,
+    image_metadata: Vec<ImageMetadata>,
+}
+
+#[derive(Clone, Copy, Serialize)]
 pub enum ImageType {
     RGB01,
     Grey01,
@@ -103,13 +120,24 @@ pub fn write_images<P: AsRef<Path>>(output_dir: P) -> std::io::Result<()> {
     // Write out images in consistent order.
     let mut names = debugger.images.keys().collect::<Vec<_>>();
     names.sort();
-    let mut ratio = 1.;
-    let mut size = (0, 0);
+    let mut image_metadata = Vec::new();
     for name in &names {
         let (it, img) = debugger.images.get(*name).unwrap();
-        let filename = format!("{}.png", name);
-        let path = output_dir.join(filename);
-        info!("Saving {}", path.to_string_lossy());
+        let image = format!("{}.png", name);
+        let binary = format!("{}.json", name);
+        let ratio = img.w as f32 / img.h as f32;
+        let size = (img.w, img.h);
+        let image_path = output_dir.join(&image);
+        let binary_path = output_dir.join(&binary);
+        image_metadata.push(ImageMetadata {
+            name: name.to_string(),
+            image,
+            binary,
+            ratio,
+            size,
+            format: *it,
+        });
+        info!("Saving {}", image_path.to_string_lossy());
         match it {
             ImageType::RGB01 => {
                 let mut out_img = image::RgbImage::new(img.w as u32, img.h as u32);
@@ -124,11 +152,7 @@ pub fn write_images<P: AsRef<Path>>(output_dir: P) -> std::io::Result<()> {
                             (pixel[2] * 255.).min(255.) as u8,
                         ])
                     });
-                if *name == MAIN_IMAGE {
-                    ratio = img.w as f32 / img.h as f32;
-                    size = (img.w, img.h);
-                }
-                out_img.save(path)?;
+                out_img.save(image_path)?;
             }
             ImageType::Grey01 => {
                 let mut out_img = image::GrayImage::new(img.w as u32, img.h as u32);
@@ -139,13 +163,12 @@ pub fn write_images<P: AsRef<Path>>(output_dir: P) -> std::io::Result<()> {
                         let pixel = img.pix[i];
                         *p = image::Luma([(pixel[0] * 255.).min(255.) as u8])
                     });
-                out_img.save(path)?;
+                out_img.save(image_path)?;
             }
             ImageType::GreyNormalized => {
                 let mut out_img = image::GrayImage::new(img.w as u32, img.h as u32);
 
                 let max_val = img.pix.iter().map(|v| v.x).fold(0., f32::max);
-                dbg!(&max_val);
                 out_img
                     .enumerate_pixels_mut()
                     .enumerate()
@@ -153,27 +176,33 @@ pub fn write_images<P: AsRef<Path>>(output_dir: P) -> std::io::Result<()> {
                         let pixel = img.pix[i];
                         *p = image::Luma([(pixel[0] / max_val * 255.).min(255.) as u8])
                     });
-                out_img.save(path)?;
+                out_img.save(image_path)?;
+            }
+        };
+        info!("Saving {}", binary_path.to_string_lossy());
+        let f = File::create(output_dir.join(binary_path))?;
+        match it {
+            ImageType::RGB01 => {
+                serde_json::ser::to_writer(
+                    f,
+                    &img.pix
+                        .iter()
+                        .map(|v| [v.x, v.y, v.z])
+                        .collect::<Vec<[f32; 3]>>(),
+                )?;
+            }
+            ImageType::Grey01 | ImageType::GreyNormalized => {
+                // TODO(wathiede): make grey scale
+                serde_json::ser::to_writer(f, &img.pix.iter().map(|v| v.x).collect::<Vec<f32>>())?;
             }
         };
     }
     let f = File::create(output_dir.join("data.json"))?;
-    #[derive(Serialize)]
-    struct Data {
-        timestamp: i64,
-        ratio: f32,
-        size: (usize, usize),
-        names: Vec<String>,
-        images: Vec<String>,
-    }
     serde_json::ser::to_writer(
         f,
         &Data {
             timestamp: now.timestamp(),
-            ratio,
-            size,
-            names: names.iter().map(|s| s.to_string()).collect(),
-            images: names.iter().map(|s| format!("{}.png", s)).collect(),
+            image_metadata,
         },
     )?;
     Ok(())