app-proto/inversive-display/src/main.rs

@@ -10,7 +10,7 @@
 extern crate js_sys;
 use core::array;
 use nalgebra::DVector;
-use sycamore::{prelude::*, rt::{JsCast, JsValue}};
+use sycamore::{prelude::*, motion::create_raf, rt::{JsCast, JsValue}};
 use web_sys::{console, WebGl2RenderingContext, WebGlProgram, WebGlShader, WebGlUniformLocation};
 
 mod engine;
@@ -207,7 +207,7 @@ fn main() {
             bind_vertex_attrib(&ctx, position_index, 3, &positions);
             
             // set up a repainting routine
-            create_effect(move || {
+            let (_, start_updating_display, _) = create_raf(move || {
                 // update the construction
                 sphere_vec.clear();
                 sphere_vec.push(engine::sphere(0.5, 0.5, -5.0 + ctrl_x.get(), radius_x.get()));
@@ -249,6 +249,14 @@ fn main() {
                 // draw the scene
                 ctx.draw_arrays(WebGl2RenderingContext::TRIANGLES, 0, VERTEX_CNT as i32);
             });
+            
+            /*
+            this wastes CPU time by running an animation loop, which updates the
+            display even when nothing has changed. there should be a way to make
+            Sycamore do single-frame updates in response to changes, but i
+            haven't found it yet
+            */
+            start_updating_display();
         });
         
         view! {