lots of rendering work & the font pain begins

nexrad-browser/Cargo.toml

@@ -26,6 +26,7 @@ winit = { version = "0.29", features = ["rwh_05"], default-features = false }
 wgpu = { version = "0.18", features = ["webgl"] }
 raw-window-handle = "0.5"
 wasm-bindgen-futures = "0.4"
+glyphon = { git = "https://github.com/grovesNL/glyphon" }
 
 [dependencies.js-sys]
 version = "0.3"

nexrad-browser/src/colors.rs

@@ -1,5 +1,5 @@
-use nexrad2::message31::MOMENT_DATA_FOLDED;
 use crate::mode::Mode;
+use nexrad2::message31::MOMENT_DATA_FOLDED;
 
 pub fn correlation_coefficient(val: f32) -> &'static str {
     let gradient = [
@@ -24,7 +24,7 @@ pub fn correlation_coefficient(val: f32) -> &'static str {
         (1.02, "purple"),
         (1.03, "mediumvioletred"),
         (1.045, "pink"),
-        (1.05, "lavenderblush")
+        (1.05, "lavenderblush"),
     ];
 
     for (threshold, color) in gradient {
@@ -61,7 +61,7 @@ pub fn spectrum_width(val: f32) -> &'static str {
         (32.0, "white"),
         (35.0, "yellow"),
         (60.0, "lime"),
-        (1000.0, "purple")
+        (1000.0, "purple"),
     ];
 
     for (threshold, color) in gradient {
@@ -96,7 +96,7 @@ pub fn differential_reflectivity(val: f32) -> &'static str {
         (6.0, "maroon"),
         (7.0, "hotpink"),
         (10.0, "pink"),
-        (999.0, "white")
+        (999.0, "white"),
     ];
 
     for (threshold, color) in gradient {
@@ -183,7 +183,13 @@ pub fn velocity(vel: f32) -> &'static str {
         "#520106", // 140
     ];
 
-    let i = scale_int((vel.floor()) as i32, 140, -140, (colors.len() - 1) as i32, 0);
+    let i = scale_int(
+        (vel.floor()) as i32,
+        140,
+        -140,
+        (colors.len() - 1) as i32,
+        0,
+    );
 
     colors[i as usize]
 }
@@ -201,6 +207,6 @@ pub fn color_scheme(product: Mode, value: f32) -> &'static str {
         Mode::DifferentialPhase => correlation_coefficient(value),
         Mode::CorrelationCoefficient => correlation_coefficient(value),
         Mode::ClutterFilterPowerRemoved => dbz_noaa(value),
-        Mode::RadarInoperative => "#ff0000"
+        Mode::RadarInoperative => "#ff0000",
     }
 }

nexrad-browser/src/command.rs

@@ -1,11 +1,10 @@
-use web_sys::FileReader;
 use crate::loadar2;
 use crate::mode::Mode;
 use crate::scope::ScopeState;
+use web_sys::FileReader;
 
 pub fn should_newline(state: &mut ScopeState) -> bool {
-    state.command_buf.starts_with("MODE SET")
+    state.command_buf.starts_with("MODE SET") || state.command_buf.starts_with("ELEVATION SET")
-    || state.command_buf.starts_with("ELEVATION SET")
 }
 
 pub fn exec(state: &mut ScopeState, command: String) {
@@ -20,7 +19,7 @@ pub fn exec(state: &mut ScopeState, command: String) {
         if tokens.len() < 3 {
             state.command_buf = "ARGUMENT INVALID".to_string();
             state.command_buf_response_mode = true;
-            return
+            return;
         } else {
             let mode = tokens[2];
             if let Some(ar2) = &state.ar2 {
@@ -30,7 +29,7 @@ pub fn exec(state: &mut ScopeState, command: String) {
                 if !valid_modes.contains(&&mode.to_string()) {
                     state.command_buf = "ARGUMENT INVALID".to_string();
                     state.command_buf_response_mode = true;
-                    return
+                    return;
                 }
 
                 state.scope_mode = match mode {
@@ -41,19 +40,19 @@ pub fn exec(state: &mut ScopeState, command: String) {
                     "PHI" => Mode::DifferentialPhase,
                     "RHO" => Mode::CorrelationCoefficient,
                     "CFP" => Mode::ClutterFilterPowerRemoved,
-                    _ => unreachable!()
+                    _ => unreachable!(),
                 };
             } else {
                 state.command_buf = "CANNOT SET MODE\nRADAR INOPERATIVE".to_string();
                 state.command_buf_response_mode = true;
-                return
+                return;
             }
         }
     } else if command.starts_with("ELEVATION SET") {
         if tokens.len() < 3 {
             state.command_buf = "ARGUMENT INVALID".to_string();
             state.command_buf_response_mode = true;
-            return
+            return;
         } else {
             let elev = tokens[2].to_string();
             if let Some(ar2) = &state.ar2 {
@@ -64,7 +63,7 @@ pub fn exec(state: &mut ScopeState, command: String) {
                 if !valid_elevs.contains(&elev) {
                     state.command_buf = "ARGUMENT INVALID".to_string();
                     state.command_buf_response_mode = true;
-                    return
+                    return;
                 }
                 let number: usize = elev.parse().unwrap();
 
@@ -74,7 +73,7 @@ pub fn exec(state: &mut ScopeState, command: String) {
             } else {
                 state.command_buf = "CANNOT SET MODE\nRADAR INOPERATIVE".to_string();
                 state.command_buf_response_mode = true;
-                return
+                return;
             }
         }
     } else if command == "`T" {

nexrad-browser/src/equirectangular.rs

@@ -3,5 +3,8 @@ pub const EARTH_RADIUS_MILES: f64 = 3958.8;
 pub fn latlong_to_xy(lat: f64, long: f64) -> (f64, f64) {
     // x = r λ cos(φ0)
     // y = r φ
-    (EARTH_RADIUS_MILES * long * lat.cos(), EARTH_RADIUS_MILES * lat)
+    (
+        EARTH_RADIUS_MILES * long * lat.cos(),
+        EARTH_RADIUS_MILES * lat,
+    )
 }

nexrad-browser/src/lib.rs

@@ -1,31 +1,32 @@
-pub mod utils;
+pub mod colors;
+pub mod command;
+pub mod equirectangular;
 pub mod mode;
 pub mod scope;
-pub mod equirectangular;
 pub mod sites;
-pub mod command;
+pub mod text;
+pub mod utils;
 pub mod vcp;
-pub mod colors;
 
-use std::io::Cursor;
-use std::ops::{Deref, DerefMut};
-use js_sys::Uint8Array;
-use log::{debug, error, info};
-use wasm_bindgen::prelude::*;
-use web_sys::{CanvasRenderingContext2d, HtmlCanvasElement};
-use wgpu::SurfaceError;
-use winit::dpi::PhysicalSize;
-use winit::event::{ElementState, Event, WindowEvent};
-use winit::event::WindowEvent::KeyboardInput;
-use winit::event_loop::{EventLoop, EventLoopWindowTarget};
-use winit::keyboard::KeyCode;
-use winit::window::WindowBuilder;
-use winit::platform::web::{WindowExtWebSys, WindowBuilderExtWebSys, EventLoopExtWebSys};
 use crate::command::{exec, should_newline};
 use crate::mode::Mode;
 use crate::mode::Mode::Reflectivity;
 use crate::scope::{Preferences, ScopeState, WgpuState};
-
+use glyphon::{Metrics, TextBounds};
+use js_sys::Uint8Array;
+use log::{debug, error, info};
+use std::io::Cursor;
+use std::ops::{Deref, DerefMut};
+use wasm_bindgen::prelude::*;
+use web_sys::{CanvasRenderingContext2d, HtmlCanvasElement};
+use wgpu::SurfaceError;
+use winit::dpi::PhysicalSize;
+use winit::event::WindowEvent::KeyboardInput;
+use winit::event::{ElementState, Event, WindowEvent};
+use winit::event_loop::{EventLoop, EventLoopBuilder, EventLoopProxy, EventLoopWindowTarget};
+use winit::keyboard::KeyCode;
+use winit::platform::web::{EventLoopExtWebSys, WindowBuilderExtWebSys, WindowExtWebSys};
+use winit::window::WindowBuilder;
 
 #[wasm_bindgen]
 extern "C" {
@@ -33,22 +34,31 @@ extern "C" {
     fn loadar2(c: &str);
 }
 
-#[wasm_bindgen]
+#[derive(Debug, Clone, PartialEq)]
-pub struct AbiScopeState(ScopeState);
+pub enum RenderMessage {
+    Resize { new_w: u32, new_h: u32 },
+}
 
 #[wasm_bindgen]
-pub async fn __nxrd_browser_init(w: u32, h: u32) -> AbiScopeState {
+pub struct AbiProxy(EventLoopProxy<RenderMessage>);
+
+#[wasm_bindgen]
+pub async fn __nxrd_browser_init(w: u32, h: u32) -> AbiProxy {
     wasm_logger::init(wasm_logger::Config::new(log::Level::Debug));
     utils::set_panic_hook();
 
     info!("wgpu setup");
 
-    let event_loop = EventLoop::new().expect("event loop creation failed");
+    let event_loop = EventLoopBuilder::<RenderMessage>::with_user_event()
-    let window = WindowBuilder::new().with_prevent_default(false).build(&event_loop).unwrap();
+        .build()
+        .expect("event loop creation failed");
+    let window = WindowBuilder::new()
+        .with_prevent_default(false)
+        .build(&event_loop)
+        .unwrap();
 
     window.set_min_inner_size(Some(PhysicalSize::new(w, h)));
 
-
     web_sys::window()
         .and_then(|win| win.document())
         .and_then(|doc| {
@@ -62,70 +72,115 @@ pub async fn __nxrd_browser_init(w: u32, h: u32) -> AbiScopeState {
 
     let mut render_state = WgpuState::new(window, PhysicalSize::new(w, h)).await;
 
-
-    // If you see an error here, your IDE is not compiling for webassembly
-    event_loop.spawn(move |event: Event<_>, window: &EventLoopWindowTarget<_>| {
-        match event {
-            Event::WindowEvent { ref event, window_id} => {
-                match event {
-                    KeyboardInput { event, .. } => {
-                        debug!("{:?}", event.physical_key);
-                    },
-                    WindowEvent::CloseRequested => { window.exit(); },
-                    WindowEvent::Resized(physical_size) => {
-                        render_state.reconfigure(*physical_size);
-                    },
-                    WindowEvent::RedrawRequested => {
-                        render_state.update();
-                        match render_state.render() {
-                            Ok(_) => {},
-                            Err(SurfaceError::Lost) => render_state.reconfigure(render_state.size),
-                            Err(SurfaceError::OutOfMemory) => {
-                                error!("out of memory!");
-                                window.exit();
-                            },
-                            Err(e) => error!("transient rendering error: {}", e),
-                        }
-                    },
-                    _ => {}
-                }
-            },
-            Event::AboutToWait => {
-                render_state.window().request_redraw();
-            },
-            _ => {}
-        }
-    });
-
     info!("initializing the scope");
 
-    let document = web_sys::window().expect("window should exist").document().expect("document should exist");
+    let document = web_sys::window()
+        .expect("window should exist")
+        .document()
+        .expect("document should exist");
 
     info!("finding form input element");
 
-    let file = document.get_element_by_id("file").expect("file element should exist");
+    let file = document
-    let file: web_sys::HtmlInputElement = file.dyn_into::<web_sys::HtmlInputElement>().map_err(|_| ()).expect("file input is not an input");
+        .get_element_by_id("file")
+        .expect("file element should exist");
+    let file: web_sys::HtmlInputElement = file
+        .dyn_into::<web_sys::HtmlInputElement>()
+        .map_err(|_| ())
+        .expect("file input is not an input");
 
-    let scope_state = ScopeState {
+    let mut scope_state = ScopeState {
         ar2: None,
         scope_mode: Mode::RadarInoperative,
         file_input: file,
-        lat: 30.48500, // jacksonville
+        lat: 30.48500,   // jacksonville
         long: -81.70200, // jacksonville
-        prefs: Preferences {
+        prefs: Preferences { fcs: 20 },
-            fcs: 20
-        },
         command_buf: String::new(),
         command_buf_response_mode: false,
         new_data_available: false,
         selected_elevation: 1,
-        show_ui: false
+        show_ui: false,
+        wgpu: render_state,
     };
 
+    scope_state.wgpu.add_textarea(
+        "status_bar".to_string(),
+        Metrics::new(30.0, 42.0),
+        10.0,
+        10.0,
+        1.0,
+        TextBounds {
+            left: 0,
+            top: 0,
+            right: 600,
+            bottom: 160,
+        },
+        glyphon::Color::rgb(0x4a, 0xf6, 0x26),
+        "NEXRAD INOP 00:00:00Z",
+    );
+
+    let event_proxy: EventLoopProxy<RenderMessage> = event_loop.create_proxy();
+
+    // If you see an error here, your IDE is not compiling for webassembly
+    event_loop.spawn(
+        move |event: Event<_>, window: &EventLoopWindowTarget<_>| match event {
+            Event::UserEvent(e) => match e {
+                RenderMessage::Resize { new_w, new_h } => {
+                    scope_state
+                        .wgpu
+                        .reconfigure(PhysicalSize::new(new_w, new_h));
+                }
+            },
+            Event::WindowEvent {
+                ref event,
+                window_id,
+            } => match event {
+                KeyboardInput { event, .. } => {
+                    debug!("{:?}", event.physical_key);
+                }
+                WindowEvent::CloseRequested => {
+                    window.exit();
+                }
+                WindowEvent::Resized(physical_size) => {
+                    scope_state.wgpu.reconfigure(*physical_size);
+                }
+                WindowEvent::RedrawRequested => {
+                    scope_state.wgpu.update();
+                    match scope_state.wgpu.render() {
+                        Ok(_) => {}
+                        Err(SurfaceError::Lost) => {
+                            scope_state.wgpu.reconfigure(scope_state.wgpu.size)
+                        }
+                        Err(SurfaceError::OutOfMemory) => {
+                            error!("out of memory!");
+                            window.exit();
+                        }
+                        Err(e) => error!("transient rendering error: {}", e),
+                    }
+                }
+                _ => {}
+            },
+            Event::AboutToWait => {
+                scope_state.wgpu.window().request_redraw();
+            }
+            _ => {}
+        },
+    );
+
     info!("nexrad-browser initialized successfully");
 
-    AbiScopeState(scope_state)
+    AbiProxy(event_proxy)
 }
+
+#[wasm_bindgen]
+pub fn resize_abi(w: u32, h: u32, proxy: &mut AbiProxy) {
+    proxy
+        .0
+        .send_event(RenderMessage::Resize { new_w: w, new_h: h })
+        .unwrap();
+}
+
 /*
 #[wasm_bindgen]
 pub fn render_abi(state: &mut AbiScopeState) {
@@ -133,7 +188,7 @@ pub fn render_abi(state: &mut AbiScopeState) {
 }
 
  */
-
+/*
 #[wasm_bindgen]
 pub fn load_ar2(buf: &JsValue, scope: &mut AbiScopeState) {
     let array = Uint8Array::new(buf);
@@ -175,3 +230,5 @@ pub fn keydown(state: &mut AbiScopeState, key: String) {
         state.0.command_buf += &key.to_uppercase();
     }
 }
+
+ */

nexrad-browser/src/mode.rs

@@ -15,7 +15,7 @@ pub enum Mode {
     /// CFP
     ClutterFilterPowerRemoved,
     /// RADR INOP
-    RadarInoperative
+    RadarInoperative,
 }
 impl Mode {
     pub fn unselected(&self) -> &str {
@@ -27,7 +27,7 @@ impl Mode {
             Self::DifferentialPhase => " PHI ",
             Self::CorrelationCoefficient => " RHO ",
             Self::ClutterFilterPowerRemoved => " CFP ",
-            Self::RadarInoperative => " RADR INOP"
+            Self::RadarInoperative => " RADR INOP",
         }
     }
     pub fn selected(&self) -> &str {
@@ -39,7 +39,7 @@ impl Mode {
             Self::DifferentialPhase => ">PHI<",
             Self::CorrelationCoefficient => ">RHO<",
             Self::ClutterFilterPowerRemoved => ">CFP<",
-            Self::RadarInoperative => ">RADR INOP<"
+            Self::RadarInoperative => ">RADR INOP<",
         }
     }
 
@@ -52,7 +52,7 @@ impl Mode {
             Self::DifferentialPhase => "PHI",
             Self::CorrelationCoefficient => "RHO",
             Self::ClutterFilterPowerRemoved => "CFP",
-            Self::RadarInoperative => "NOP"
+            Self::RadarInoperative => "NOP",
         }
     }
 }

nexrad-browser/src/old_rendering.rs

@@ -1,16 +1,19 @@
-use std::f64::consts::PI;
-use chrono::{DateTime, Timelike, Utc};
-use itertools::Itertools;
-use log::{debug, info};
-use wasm_bindgen::JsValue;
-use nexrad2::message31::MOMENT_DATA_BELOW_THRESHOLD;
 use crate::colors::color_scheme;
 use crate::mode::Mode;
-use crate::mode::Mode::{ClutterFilterPowerRemoved, CorrelationCoefficient, DifferentialPhase, DifferentialReflectivity, RadarInoperative, Reflectivity, SpectrumWidth, Velocity};
+use crate::mode::Mode::{
+    ClutterFilterPowerRemoved, CorrelationCoefficient, DifferentialPhase, DifferentialReflectivity,
+    RadarInoperative, Reflectivity, SpectrumWidth, Velocity,
+};
 use crate::rescaleCanvas;
 use crate::scope::ScopeState;
 use crate::utils::parse_date;
 use crate::vcp::vcp_string;
+use chrono::{DateTime, Timelike, Utc};
+use itertools::Itertools;
+use log::{debug, info};
+use nexrad2::message31::MOMENT_DATA_BELOW_THRESHOLD;
+use std::f64::consts::PI;
+use wasm_bindgen::JsValue;
 
 pub const TEXT_COLOR_RED: &str = "#ef0000";
 pub const TEXT_COLOR_GREEN: &str = "#4af626";
@@ -52,24 +55,48 @@ pub fn render(state: &mut ScopeState) -> Result<(), JsValue> {
 
     // render out the scope id line
     if state.show_ui {
-        ctx.fill_text(&format!("NEXRAD {} {}", state.ar2.as_ref().map(|u| u.volume_header_record.icao.as_str()).unwrap_or("INOP"), zulu(time)), 50.0, 50.0)?;
+        ctx.fill_text(
+            &format!(
+                "NEXRAD {} {}",
+                state
+                    .ar2
+                    .as_ref()
+                    .map(|u| u.volume_header_record.icao.as_str())
+                    .unwrap_or("INOP"),
+                zulu(time)
+            ),
+            50.0,
+            50.0,
+        )?;
         if state.ar2.is_none() {
             // inop alert
             ctx.set_fill_style(&JsValue::from_str(TEXT_COLOR_RED));
-            ctx.fill_text("RADAR INOPERATIVE NO DATA LOADED", 50.0, 50.0 + (state.prefs.fcs as f64))?;
+            ctx.fill_text(
+                "RADAR INOPERATIVE NO DATA LOADED",
+                50.0,
+                50.0 + (state.prefs.fcs as f64),
+            )?;
             ctx.set_fill_style(&JsValue::from_str(TEXT_COLOR_GREEN));
         }
         if state.new_data_available {
             // inop alert
             ctx.set_fill_style(&JsValue::from_str(TEXT_COLOR_RED));
-            ctx.fill_text("NEW DATA AVAIL RLD RQD", 50.0, 50.0 + (state.prefs.fcs as f64) * 2.0)?;
+            ctx.fill_text(
+                "NEW DATA AVAIL RLD RQD",
+                50.0,
+                50.0 + (state.prefs.fcs as f64) * 2.0,
+            )?;
             ctx.set_fill_style(&JsValue::from_str(TEXT_COLOR_GREEN));
         }
     }
 
     // render the command buffer
     for (line_no, line) in state.command_buf.split('\n').enumerate() {
-        ctx.fill_text(line, 50.0, (canvas.height() / 3) as f64 + (state.prefs.fcs * line_no) as f64)?;
+        ctx.fill_text(
+            line,
+            50.0,
+            (canvas.height() / 3) as f64 + (state.prefs.fcs * line_no) as f64,
+        )?;
     }
 
     // render the radar site info
@@ -77,7 +104,16 @@ pub fn render(state: &mut ScopeState) -> Result<(), JsValue> {
         ctx.set_text_align("right");
         ctx.fill_text("RADAR SITE", (canvas.width() - 50) as f64, 50.0)?;
         if let Some(ar2) = &state.ar2 {
-            ctx.fill_text(&format!("{} VCP {} {}", ar2.volume_header_record.icao, ar2.meta_rda_status_data.vcp, vcp_string(ar2.meta_rda_status_data.vcp)), (canvas.width() - 50) as f64, 50.0 + (state.prefs.fcs as f64))?;
+            ctx.fill_text(
+                &format!(
+                    "{} VCP {} {}",
+                    ar2.volume_header_record.icao,
+                    ar2.meta_rda_status_data.vcp,
+                    vcp_string(ar2.meta_rda_status_data.vcp)
+                ),
+                (canvas.width() - 50) as f64,
+                50.0 + (state.prefs.fcs as f64),
+            )?;
             let recorded = parse_date(ar2.volume_header_record.date, ar2.volume_header_record.time);
             let delay = time - recorded;
 
@@ -85,18 +121,39 @@ pub fn render(state: &mut ScopeState) -> Result<(), JsValue> {
             let minutes = (delay.num_seconds() / 60) % 60;
             let hours = delay.num_seconds() / 3600;
 
-            ctx.fill_text(&format!("SITE DELAY {:0>2}:{:0>2}:{:0>2}", hours, minutes, seconds), (canvas.width() - 50) as f64, 50.0 + (state.prefs.fcs as f64 * 2.0))?;
+            ctx.fill_text(
+                &format!("SITE DELAY {:0>2}:{:0>2}:{:0>2}", hours, minutes, seconds),
+                (canvas.width() - 50) as f64,
+                50.0 + (state.prefs.fcs as f64 * 2.0),
+            )?;
         } else {
-            ctx.fill_text("SITE INFORMATION UNAVAILABLE", (canvas.width() - 50) as f64, 50.0 + state.prefs.fcs as f64)?;
+            ctx.fill_text(
-            ctx.fill_text("DELAY INFORMATION UNAVAILABLE", (canvas.width() - 50) as f64, 50.0 + (state.prefs.fcs * 2) as f64)?;
+                "SITE INFORMATION UNAVAILABLE",
+                (canvas.width() - 50) as f64,
+                50.0 + state.prefs.fcs as f64,
+            )?;
+            ctx.fill_text(
+                "DELAY INFORMATION UNAVAILABLE",
+                (canvas.width() - 50) as f64,
+                50.0 + (state.prefs.fcs * 2) as f64,
+            )?;
         }
 
         // mode info
-        ctx.fill_text("MODE", (canvas.width() - 50) as f64, (canvas.height() / 3) as f64)?;
+        ctx.fill_text(
+            "MODE",
+            (canvas.width() - 50) as f64,
+            (canvas.height() / 3) as f64,
+        )?;
         let modelines = [
             [Reflectivity, Velocity, SpectrumWidth].as_slice(),
-            [DifferentialReflectivity, DifferentialPhase, CorrelationCoefficient].as_slice(),
+            [
-            [ClutterFilterPowerRemoved, RadarInoperative].as_slice()
+                DifferentialReflectivity,
+                DifferentialPhase,
+                CorrelationCoefficient,
+            ]
+            .as_slice(),
+            [ClutterFilterPowerRemoved, RadarInoperative].as_slice(),
         ];
 
         let mut available_modes = vec![];
@@ -114,7 +171,11 @@ pub fn render(state: &mut ScopeState) -> Result<(), JsValue> {
                 let pad_end = 2 - item_no;
                 let pad_start = " ".repeat(pad_start * 6);
                 let pad_end = " ".repeat(pad_end * 6);
-                let middle = if state.scope_mode == *item { item.selected() } else { item.unselected() };
+                let middle = if state.scope_mode == *item {
+                    item.selected()
+                } else {
+                    item.unselected()
+                };
 
                 if state.scope_mode == *item {
                     // display selected color
@@ -130,7 +191,6 @@ pub fn render(state: &mut ScopeState) -> Result<(), JsValue> {
                     continue;
                 }
 
-
                 if available_modes.contains(&&item.rname().to_string()) {
                     ctx.fill_text(&format!(" {}{}{}", pad_start, middle, pad_end), x, y)?;
                 }
@@ -142,26 +202,56 @@ pub fn render(state: &mut ScopeState) -> Result<(), JsValue> {
             }
         }
 
-        ctx.fill_text("ELEVATIONS", (canvas.width() - 50) as f64, ((canvas.height() / 7) * 4) as f64)?;
+        ctx.fill_text(
+            "ELEVATIONS",
+            (canvas.width() - 50) as f64,
+            ((canvas.height() / 7) * 4) as f64,
+        )?;
         if let Some(ar2) = &state.ar2 {
             let mut line_no = 0;
 
-            for chunk in &ar2.elevations.iter().sorted_by(|a, b| {
+            for chunk in &ar2
-                Ord::cmp(&a.0, &b.0)
+                .elevations
-            }).enumerate().chunks(4) {
+                .iter()
+                .sorted_by(|a, b| Ord::cmp(&a.0, &b.0))
+                .enumerate()
+                .chunks(4)
+            {
                 for (no_in_line, (elevation_no, scans)) in chunk {
                     if state.selected_elevation != *elevation_no {
-                        ctx.fill_text(&format!(" {:0>3} {}", elevation_no, " ".repeat(5 * (3 - (no_in_line % 4)))), (canvas.width() - 50) as f64, ((canvas.height() / 7) * 4) as f64 + (state.prefs.fcs * (line_no + 1)) as f64)?;
+                        ctx.fill_text(
+                            &format!(
+                                " {:0>3} {}",
+                                elevation_no,
+                                " ".repeat(5 * (3 - (no_in_line % 4)))
+                            ),
+                            (canvas.width() - 50) as f64,
+                            ((canvas.height() / 7) * 4) as f64
+                                + (state.prefs.fcs * (line_no + 1)) as f64,
+                        )?;
                     } else {
                         ctx.set_fill_style(&JsValue::from_str(TEXT_COLOR_WHITE));
-                        ctx.fill_text(&format!(">{:0>3}<{}", elevation_no, " ".repeat(5 * (3 - (no_in_line % 4)))), (canvas.width() - 50) as f64, ((canvas.height() / 7) * 4) as f64 + (state.prefs.fcs * (line_no + 1)) as f64)?;
+                        ctx.fill_text(
+                            &format!(
+                                ">{:0>3}<{}",
+                                elevation_no,
+                                " ".repeat(5 * (3 - (no_in_line % 4)))
+                            ),
+                            (canvas.width() - 50) as f64,
+                            ((canvas.height() / 7) * 4) as f64
+                                + (state.prefs.fcs * (line_no + 1)) as f64,
+                        )?;
                         ctx.set_fill_style(&JsValue::from_str(TEXT_COLOR_GREEN));
                     }
                 }
                 line_no += 1;
             }
         } else {
-            ctx.fill_text("ELEVATION INFORMATION UNAVAILABLE", (canvas.width() - 50) as f64, ((canvas.height() / 7) * 4) as f64 + state.prefs.fcs as f64)?;
+            ctx.fill_text(
+                "ELEVATION INFORMATION UNAVAILABLE",
+                (canvas.width() - 50) as f64,
+                ((canvas.height() / 7) * 4) as f64 + state.prefs.fcs as f64,
+            )?;
         }
     }
 
@@ -173,8 +263,21 @@ pub fn render(state: &mut ScopeState) -> Result<(), JsValue> {
 
         let radials = ar2.elevations.get(&state.selected_elevation).unwrap();
 
-        let first_gate_px = (radials[0].available_data.get("REF").expect("reflectivity is missing!").gdm.data_moment_range) as f32 / 1000.0 * px_per_km;
+        let first_gate_px = (radials[0]
-        let gate_interval_km = (radials[0].available_data.get("REF").expect("reflectivity is missing!").gdm.data_moment_range_sample_interval) as f32 / 1000.0;
+            .available_data
+            .get("REF")
+            .expect("reflectivity is missing!")
+            .gdm
+            .data_moment_range) as f32
+            / 1000.0
+            * px_per_km;
+        let gate_interval_km = (radials[0]
+            .available_data
+            .get("REF")
+            .expect("reflectivity is missing!")
+            .gdm
+            .data_moment_range_sample_interval) as f32
+            / 1000.0;
         let gate_width_px = gate_interval_km * px_per_km;
 
         for radial in radials {
@@ -188,7 +291,7 @@ pub fn render(state: &mut ScopeState) -> Result<(), JsValue> {
 
             let azimuth_spacing = match radial.header.azimuth_resolution_spacing {
                 1 => 0.5,
-                _ => 1.0
+                _ => 1.0,
             };
             if (azimuth_angle + azimuth_spacing).floor() > azimuth {
                 azimuth += azimuth_spacing;
@@ -205,26 +308,60 @@ pub fn render(state: &mut ScopeState) -> Result<(), JsValue> {
             // line width
             // line cap
 
-            let gates = radial.available_data.get(state.scope_mode.rname()).expect("selected unavailable product").scaled_data();
+            let gates = radial
+                .available_data
+                .get(state.scope_mode.rname())
+                .expect("selected unavailable product")
+                .scaled_data();
 
             let num_gates = gates.len();
 
             for (num, value) in gates.iter().enumerate() {
                 if *value != MOMENT_DATA_BELOW_THRESHOLD {
-
+                    ctx.move_to(
-                    ctx.move_to(xc as f64 + start_angle.cos() * distance_x as f64, yc as f64 + start_angle.sin() * distance_y as f64);
+                        xc as f64 + start_angle.cos() * distance_x as f64,
+                        yc as f64 + start_angle.sin() * distance_y as f64,
+                    );
 
                     ctx.begin_path();
 
                     if num == 0 {
-                        ctx.ellipse(xc as f64, yc as f64, distance_x as f64, distance_y as f64, 0.0, start_angle - 0.001, end_angle + 0.001)?;
+                        ctx.ellipse(
+                            xc as f64,
+                            yc as f64,
+                            distance_x as f64,
+                            distance_y as f64,
+                            0.0,
+                            start_angle - 0.001,
+                            end_angle + 0.001,
+                        )?;
                     } else if num == num_gates - 1 {
-                        ctx.ellipse(xc as f64, yc as f64, distance_x as f64, distance_y as f64, 0.0, start_angle, end_angle)?;
+                        ctx.ellipse(
+                            xc as f64,
+                            yc as f64,
+                            distance_x as f64,
+                            distance_y as f64,
+                            0.0,
+                            start_angle,
+                            end_angle,
+                        )?;
                     } else {
-                        ctx.ellipse(xc as f64, yc as f64, distance_x as f64, distance_y as f64, 0.0, start_angle, end_angle + 0.001)?;
+                        ctx.ellipse(
+                            xc as f64,
+                            yc as f64,
+                            distance_x as f64,
+                            distance_y as f64,
+                            0.0,
+                            start_angle,
+                            end_angle + 0.001,
+                        )?;
                     }
 
-                    ctx.set_stroke_style(&JsValue::from_str(&format!("{}px {}", gate_width_px + 1.0, color_scheme(state.scope_mode, *value))));
+                    ctx.set_stroke_style(&JsValue::from_str(&format!(
+                        "{}px {}",
+                        gate_width_px + 1.0,
+                        color_scheme(state.scope_mode, *value)
+                    )));
                     ctx.stroke();
                 }
 

nexrad-browser/src/scope.rs

@@ -1,13 +1,26 @@
+use crate::mode::Mode;
+use crate::text::OTextArea;
+use glyphon::{
+    Attrs, Buffer, Family, FontSystem, Metrics, Resolution, Shaping, SwashCache, TextArea,
+    TextAtlas, TextBounds, TextRenderer,
+};
+use nexrad2::Nexrad2Chunk;
+use raw_window_handle::HasRawDisplayHandle;
+use std::collections::HashMap;
 use std::iter;
+use std::sync::Arc;
+use glyphon::fontdb::Source;
 use web_sys::{CanvasRenderingContext2d, HtmlCanvasElement, HtmlInputElement};
-use wgpu::{Backends, Color, CommandEncoderDescriptor, Device, Features, Instance, InstanceDescriptor, Limits, LoadOp, Operations, Queue, RenderPassColorAttachment, RenderPassDescriptor, StoreOp, Surface, SurfaceConfiguration, SurfaceError, TextureUsages, TextureViewDescriptor};
+use wgpu::DeviceDescriptor;
+use wgpu::{
+    Backends, Color, CommandEncoderDescriptor, Device, Features, Instance, InstanceDescriptor,
+    Limits, LoadOp, MultisampleState, Operations, Queue, RenderPassColorAttachment,
+    RenderPassDescriptor, StoreOp, Surface, SurfaceConfiguration, SurfaceError, TextureUsages,
+    TextureViewDescriptor,
+};
 use winit::dpi::PhysicalSize;
 use winit::event::WindowEvent;
-use raw_window_handle::HasRawDisplayHandle;
 use winit::window::Window;
-use nexrad2::Nexrad2Chunk;
-use crate::mode::Mode;
-use wgpu::DeviceDescriptor;
 
 pub struct ScopeState {
     pub ar2: Option<Nexrad2Chunk>,
@@ -20,7 +33,8 @@ pub struct ScopeState {
     pub command_buf_response_mode: bool,
     pub new_data_available: bool,
     pub selected_elevation: usize,
-    pub show_ui: bool
+    pub show_ui: bool,
+    pub wgpu: WgpuState,
 }
 
 pub struct WgpuState {
@@ -29,7 +43,12 @@ pub struct WgpuState {
     pub queue: Queue,
     pub surface_config: SurfaceConfiguration,
     pub size: PhysicalSize<u32>,
-    pub window: Window
+    pub window: Window,
+    pub font_system: FontSystem,
+    pub font_cache: SwashCache,
+    pub atlas: TextAtlas,
+    pub text_renderer: TextRenderer,
+    pub text_buffers: HashMap<String, OTextArea>,
 }
 
 impl WgpuState {
@@ -40,30 +59,34 @@ impl WgpuState {
             dx12_shader_compiler: Default::default(),
             gles_minor_version: Default::default(),
         });
-        let surface = unsafe {
+        let surface = unsafe { instance.create_surface(&window).unwrap() };
-            instance.create_surface(&window).unwrap()
-        };
 
-        let adapter = instance.request_adapter(
+        let adapter = instance
-            &wgpu::RequestAdapterOptions {
+            .request_adapter(&wgpu::RequestAdapterOptions {
                 power_preference: wgpu::PowerPreference::default(),
                 compatible_surface: Some(&surface),
                 force_fallback_adapter: false,
-            },
+            })
-        ).await.unwrap();
+            .await
+            .unwrap();
 
-        let (device, queue) = adapter.request_device(
+        let (device, queue) = adapter
-            &DeviceDescriptor {
+            .request_device(
-                features: Features::empty(),
+                &DeviceDescriptor {
-                limits: Limits::downlevel_webgl2_defaults(),
+                    features: Features::empty(),
-                label: None,
+                    limits: Limits::downlevel_webgl2_defaults(),
-            },
+                    label: None,
-            None, // Trace path
+                },
-        ).await.unwrap();
+                None, // Trace path
+            )
+            .await
+            .unwrap();
 
         let surface_capabilities = surface.get_capabilities(&adapter);
 
-        let surface_format = surface_capabilities.formats.iter()
+        let surface_format = surface_capabilities
+            .formats
+            .iter()
             .copied()
             .find(|f| f.is_srgb())
             .unwrap_or(surface_capabilities.formats[0]);
@@ -80,13 +103,27 @@ impl WgpuState {
 
         surface.configure(&device, &surface_config);
 
+        let mut fonts = vec![];
+        fonts.push(Source::Binary(Arc::new(include_bytes!("./VT323-Regular.ttf"))));
+
+        let mut font_system = FontSystem::new_with_fonts(fonts.into_iter());
+        let mut font_cache = SwashCache::new();
+        let mut atlas = TextAtlas::new(&device, &queue, surface_format);
+        let mut text_renderer =
+            TextRenderer::new(&mut atlas, &device, MultisampleState::default(), None);
+
         Self {
             window,
             surface,
             device,
             queue,
             surface_config,
-            size
+            size,
+            font_system,
+            font_cache,
+            atlas,
+            text_renderer,
+            text_buffers: HashMap::new(),
         }
     }
 
@@ -107,29 +144,70 @@ impl WgpuState {
         false
     }
 
-    pub fn update(&mut self) {
+    pub fn update(&mut self) {}
-
-    }
 
     pub fn render(&mut self) -> Result<(), SurfaceError> {
         let output = self.surface.get_current_texture()?;
-        let view = output.texture.create_view(&TextureViewDescriptor::default());
+        let view = output
-        let mut encoder = self.device.create_command_encoder(&CommandEncoderDescriptor {
+            .texture
-            label: Some("Render Encoder"),
+            .create_view(&TextureViewDescriptor::default());
-        });
+        let mut encoder = self
+            .device
+            .create_command_encoder(&CommandEncoderDescriptor {
+                label: Some("Render Encoder"),
+            });
+
+        let physical_width = (self.surface_config.width as f64 * self.window.scale_factor()) as f32;
+        let physical_height =
+            (self.surface_config.height as f64 * self.window.scale_factor()) as f32;
+
+        for textarea in self.text_buffers.values_mut() {
+            // resize the buf
+            textarea
+                .buffer
+                .set_size(&mut self.font_system, physical_width, physical_height);
+        }
+
+        let textareas = self
+            .text_buffers
+            .values()
+            .map(|u| TextArea {
+                buffer: &u.buffer,
+                left: u.left.clone() as f32,
+                top: u.top.clone() as f32,
+                scale: u.scale.clone() as f32,
+                bounds: u.bounds.clone(),
+                default_color: u.default_color.clone(),
+            })
+            .collect::<Vec<_>>();
+
+        self.text_renderer
+            .prepare(
+                &self.device,
+                &self.queue,
+                &mut self.font_system,
+                &mut self.atlas,
+                Resolution {
+                    width: self.surface_config.width,
+                    height: self.surface_config.height,
+                },
+                textareas,
+                &mut self.font_cache,
+            )
+            .unwrap();
 
         // LOCK BLOCK
         {
-            let render_pass = encoder.begin_render_pass(&RenderPassDescriptor {
+            let mut render_pass = encoder.begin_render_pass(&RenderPassDescriptor {
                 label: Some("Render Pass"),
                 color_attachments: &[Some(RenderPassColorAttachment {
                     view: &view,
                     resolve_target: None,
                     ops: Operations {
                         load: LoadOp::Clear(Color {
-                            r: 0.1,
+                            r: 0.0,
-                            g: 0.2,
+                            g: 0.0,
-                            b: 0.3,
+                            b: 0.0,
                             a: 1.0,
                         }),
                         store: StoreOp::Store,
@@ -139,16 +217,61 @@ impl WgpuState {
                 timestamp_writes: None,
                 occlusion_query_set: None,
             });
+
+            self.text_renderer
+                .render(&self.atlas, &mut render_pass)
+                .unwrap();
         }
 
         self.queue.submit(iter::once(encoder.finish()));
         output.present();
 
+        self.atlas.trim();
+
         Ok(())
     }
+
+    pub fn add_textarea(
+        &mut self,
+        id: String,
+        metrics: Metrics,
+        left: f64,
+        top: f64,
+        scale: f64,
+        bounds: TextBounds,
+        default_color: glyphon::Color,
+        start_text: &str,
+    ) -> &mut OTextArea {
+        let mut buffer = Buffer::new(&mut self.font_system, metrics);
+
+        let physical_width = (self.surface_config.width as f64 * self.window.scale_factor()) as f32;
+        let physical_height =
+            (self.surface_config.height as f64 * self.window.scale_factor()) as f32;
+
+        buffer.set_size(&mut self.font_system, physical_width, physical_height);
+        buffer.set_text(
+            &mut self.font_system,
+            start_text,
+            Attrs::new().family(Family::Monospace),
+            Shaping::Basic,
+        );
+        buffer.shape_until_scroll(&mut self.font_system);
+
+        let textarea = OTextArea {
+            left,
+            top,
+            scale,
+            bounds,
+            default_color,
+            buffer,
+        };
+
+        self.text_buffers.insert(id.clone(), textarea);
+
+        self.text_buffers.get_mut(&id).unwrap()
+    }
 }
 
-
 pub struct Preferences {
-    pub fcs: usize
+    pub fcs: usize,
 }

nexrad-browser/src/text.rs

@@ -0,0 +1,10 @@
+use glyphon::{Buffer, Color, TextArea, TextBounds};
+
+pub struct OTextArea {
+    pub left: f64,
+    pub top: f64,
+    pub scale: f64,
+    pub bounds: TextBounds,
+    pub default_color: Color,
+    pub buffer: Buffer,
+}

nexrad-browser/www/index.js

@@ -1,6 +1,12 @@
 import * as wasm from "./wasm/nexrad_browser.js";
 await wasm.default();
-let global_context = wasm.__nxrd_browser_init(window.innerWidth, window.innerHeight);
+let abi_proxy = await wasm.__nxrd_browser_init(window.innerWidth, window.innerHeight);
+
+window.onresize = async () => {
+    console.log("window resized!");
+    await wasm.resize_abi(window.innerWidth, window.innerHeight, abi_proxy);
+}
+
 /*
 function rescaleCanvas(canvas, ctx) {
     var dpr = window.devicePixelRatio || 1;