gioser

2026-05-12 18:55:29 +00:00
parent 6596c81271
commit 52acaabcf4
23 changed files with 1774 additions and 0 deletions
@@ -0,0 +1,149 @@
+//! Entrypoint WASM de la landing GioSer.
+//!
+//! Monta el canvas, instala listeners de mouse y resize, corre el loop
+//! con `requestAnimationFrame`, y reposiciona los 4 botones DOM
+//! `#tip-{aire|fuego|tierra|agua}` sobre las puntas proyectadas
+//! de la chacana cada frame.
+
+use std::cell::RefCell;
+use std::rc::Rc;
+
+use gioser_canvas_web::{tips, Renderer};
+use wasm_bindgen::prelude::*;
+use wasm_bindgen::JsCast;
+use web_sys::{Document, HtmlCanvasElement, HtmlElement, MouseEvent, Window};
+
+#[wasm_bindgen(start)]
+pub fn boot() -> Result<(), JsValue> {
+    install_panic_hook();
+    let window = web_sys::window().ok_or_else(|| JsValue::from_str("no window"))?;
+    let document = window
+        .document()
+        .ok_or_else(|| JsValue::from_str("no document"))?;
+
+    let canvas: HtmlCanvasElement = document
+        .get_element_by_id("gioser-canvas")
+        .ok_or_else(|| JsValue::from_str("no canvas#gioser-canvas"))?
+        .dyn_into()?;
+
+    fit_canvas(&canvas, &window);
+    let renderer = Rc::new(RefCell::new(Renderer::new(&canvas)?));
+    renderer
+        .borrow_mut()
+        .resize(canvas.width(), canvas.height());
+
+    install_resize(&window, &canvas, &renderer)?;
+    install_mouse(&document, &canvas, &renderer)?;
+    install_raf(&window, &document, &canvas, &renderer);
+
+    Ok(())
+}
+
+fn install_resize(
+    window: &Window,
+    canvas: &HtmlCanvasElement,
+    renderer: &Rc<RefCell<Renderer>>,
+) -> Result<(), JsValue> {
+    let canvas = canvas.clone();
+    let win2 = window.clone();
+    let r = renderer.clone();
+    let cb = Closure::<dyn FnMut()>::new(move || {
+        fit_canvas(&canvas, &win2);
+        r.borrow_mut().resize(canvas.width(), canvas.height());
+    });
+    window.add_event_listener_with_callback("resize", cb.as_ref().unchecked_ref())?;
+    cb.forget();
+    Ok(())
+}
+
+fn install_mouse(
+    document: &Document,
+    canvas: &HtmlCanvasElement,
+    renderer: &Rc<RefCell<Renderer>>,
+) -> Result<(), JsValue> {
+    let canvas = canvas.clone();
+    let r = renderer.clone();
+    let cb = Closure::<dyn FnMut(MouseEvent)>::new(move |e: MouseEvent| {
+        let w = canvas.client_width().max(1) as f32;
+        let h = canvas.client_height().max(1) as f32;
+        // Origen en el centro del canvas, +y arriba.
+        let x = e.client_x() as f32 - w * 0.5;
+        let y = h * 0.5 - e.client_y() as f32;
+        r.borrow_mut().set_mouse_px(x, y);
+    });
+    document.add_event_listener_with_callback("mousemove", cb.as_ref().unchecked_ref())?;
+    cb.forget();
+    Ok(())
+}
+
+fn install_raf(
+    window: &Window,
+    document: &Document,
+    canvas: &HtmlCanvasElement,
+    renderer: &Rc<RefCell<Renderer>>,
+) {
+    let f = Rc::new(RefCell::new(None::<Closure<dyn FnMut(f64)>>));
+    let g = f.clone();
+    let renderer = renderer.clone();
+    let canvas = canvas.clone();
+    let document = document.clone();
+    let window2 = window.clone();
+    *g.borrow_mut() = Some(Closure::<dyn FnMut(f64)>::new(move |time_ms: f64| {
+        renderer.borrow_mut().render(time_ms);
+        position_tips(&document, &canvas, &renderer.borrow());
+        if let Some(cb) = f.borrow().as_ref() {
+            let _ = window2.request_animation_frame(cb.as_ref().unchecked_ref());
+        }
+    }));
+    let _ = window.request_animation_frame(g.borrow().as_ref().unwrap().as_ref().unchecked_ref());
+}
+
+fn fit_canvas(canvas: &HtmlCanvasElement, window: &Window) {
+    let dpr = window.device_pixel_ratio() as f32;
+    let w = window
+        .inner_width()
+        .ok()
+        .and_then(|v| v.as_f64())
+        .unwrap_or(1280.0) as f32;
+    let h = window
+        .inner_height()
+        .ok()
+        .and_then(|v| v.as_f64())
+        .unwrap_or(720.0) as f32;
+    canvas.set_width((w * dpr) as u32);
+    canvas.set_height((h * dpr) as u32);
+    let el: &HtmlElement = canvas.unchecked_ref();
+    let style = el.style();
+    let _ = style.set_property("width", &format!("{}px", w));
+    let _ = style.set_property("height", &format!("{}px", h));
+}
+
+fn position_tips(document: &Document, canvas: &HtmlCanvasElement, renderer: &Renderer) {
+    let clips = renderer.tips_ndc();
+    let cw = canvas.client_width().max(1) as f32;
+    let ch = canvas.client_height().max(1) as f32;
+    for (i, (id, _color, _label)) in tips::ORDER.iter().enumerate() {
+        let (nx, ny) = clips[i];
+        let px = (nx + 1.0) * 0.5 * cw;
+        let py = (1.0 - (ny + 1.0) * 0.5) * ch;
+        let sel = format!("tip-{}", id);
+        if let Some(el) = document.get_element_by_id(&sel) {
+            if let Ok(el) = el.dyn_into::<HtmlElement>() {
+                let _ = el.style().set_property(
+                    "transform",
+                    &format!("translate({:.2}px, {:.2}px) translate(-50%, -50%)", px, py),
+                );
+            }
+        }
+    }
+}
+
+fn install_panic_hook() {
+    static SET: std::sync::Once = std::sync::Once::new();
+    SET.call_once(|| {
+        std::panic::set_hook(Box::new(|info| {
+            let msg = format!("{}", info);
+            web_sys::console::error_1(&JsValue::from_str(&msg));
+        }));
+    });
+}