add grid options
This commit is contained in:
Magnus Ulimoen
parent
cd72ce3477
commit
4c40acbb1f
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@ -10,8 +10,9 @@
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<script async type="module" src="main.js"></script>
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</head>
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<body>
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<div class="canvas">
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<canvas id="glCanvas"></canvas>
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</body>
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</div>
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<div class="vertical-menu" id="menu">
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<div class="menu-item">
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<p class="menu-header">Choose an equation set</p>
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@ -25,14 +26,28 @@
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</p>
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</div>
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<div class="grid menu-item">
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<p class="menu-header">Grid settings:</p>
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x: x0, yn, n<br/>
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y: y0, yn, n<br/>
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Curvilinear? Diamond shaped domain?
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<p class="menu-header">Grid</p>
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<div class="horizontal-flex">
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x:
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<label for="x0">x0:</label><input type="number" name="x0" id="x0" step="any" placeholder="0.0" value="0.0">
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<label for="xn">xn:</label><input type="number" name="xn" id="xn" step="any" placeholder="1.0" value="1.0">
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<label for="xN">N:</label><input type="number" name="xN" id="xN" placeholder="25" value="25" min="2">
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</div>
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<div class="horizontal-flex">
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y:
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<label for="y0">y0:</label><input type="number" name="y0" id="y0" step="any" placeholder="0.0" value="0.0">
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<label for="yn">yn:</label><input type="number" name="yn" id="yn" step="any" placeholder="1.0" value="1.0">
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<label for="yN">N:</label><input type="number" name="yN" id="yN" placeholder="25" value="25" min="2">
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</div>
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<div>
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<label for="diamond">Tilt grid </label><input type="checkbox" name="diamond" id="diamond">
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</div>
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<!--
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Curvilinear? Inputting some random json?
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-->
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</div>
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<div class="gen_set menu-item">
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<p class="menu-header">General settings</p>
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<p class="menu-header">Settings</p>
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</div>
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<div class="about menu-item">
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<p class="menu-header">About</p>
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@ -44,4 +59,5 @@
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<button title="Play/pause" class="control-item" id="toggle-playing">▶️/⏸️</button>
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<button title="Reset" class="control-item" id="reset">🔄️</button>
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</div>
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</body>
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</html>
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@ -1,3 +1,6 @@
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import { default as init, set_panic_hook as setPanicHook,
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MaxwellUniverse, EulerUniverse, ShallowWaterUniverse } from "./sbp_web.js";
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function compile_and_link(ctx, vsource, fsource) {
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const program = ctx.createProgram();
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const vsShader = ctx.createShader(ctx.VERTEX_SHADER);
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@ -139,6 +142,8 @@ class LineDrawer {
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}
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(async function run() {
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const wasm = await init("./sbp_web_bg.wasm");
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setPanicHook();
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const canvas = document.getElementById("glCanvas");
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const gl = canvas.getContext("webgl");
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@ -149,26 +154,10 @@ class LineDrawer {
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console.info("Successfully opened webgl canvas");
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const width = 23;
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const height = 21;
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const x = new Float32Array(width * height);
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const y = new Float32Array(width * height);
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for (let j = 0; j < height; j += 1) {
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for (let i = 0; i < width; i += 1) {
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const n = width*j + i;
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x[n] = i / (width - 1.0);
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y[n] = j / (height - 1.0);
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}
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}
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const bbox = [+Number(Infinity), -Number(Infinity), +Number(Infinity), -Number(Infinity)];
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for (let i = 0; i < width*height; i += 1) {
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bbox[0] = Math.min(bbox[0], x[i]);
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bbox[1] = Math.max(bbox[1], x[i]);
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bbox[2] = Math.min(bbox[2], y[i]);
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bbox[3] = Math.max(bbox[3], y[i]);
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}
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let x;
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let y;
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let width;
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let height;
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// A nice pink to show missing values
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gl.clearColor(1.0, 0.753, 0.796, 1.0);
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@ -180,22 +169,64 @@ class LineDrawer {
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const xBuffer = gl.createBuffer();
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const yBuffer = gl.createBuffer();
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const lineDrawer = new LineDrawer(gl);
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function setup() {
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width = parseInt(document.getElementById("xN").value);
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height = parseInt(document.getElementById("yN").value);
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const x0 = parseFloat(document.getElementById("x0").value);
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const xn = parseFloat(document.getElementById("xn").value);
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const y0 = parseFloat(document.getElementById("y0").value);
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const yn = parseFloat(document.getElementById("yn").value);
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const diamond = document.getElementById("diamond").checked;
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console.log(diamond);
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x = new Float32Array(width * height);
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y = new Float32Array(width * height);
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const dx = (xn - x0) / (width - 1)
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const dy = (yn - y0) / (height - 1)
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for (let j = 0; j < height; j += 1) {
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for (let i = 0; i < width; i += 1) {
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const n = width*j + i;
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x[n] = dx*i;
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y[n] = dy*j;
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if (diamond) {
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const xn = x[n];
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const yn = y[n];
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x[n] = xn - yn;
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y[n] = xn + yn;
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}
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}
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}
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const bbox = [+Number(Infinity), -Number(Infinity), +Number(Infinity), -Number(Infinity)];
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for (let i = 0; i < width*height; i += 1) {
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bbox[0] = Math.min(bbox[0], x[i]);
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bbox[1] = Math.max(bbox[1], x[i]);
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bbox[2] = Math.min(bbox[2], y[i]);
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bbox[3] = Math.max(bbox[3], y[i]);
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}
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gl.bindBuffer(gl.ARRAY_BUFFER, xBuffer);
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gl.bufferData(gl.ARRAY_BUFFER, x, gl.STATIC_DRAW);
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gl.bindBuffer(gl.ARRAY_BUFFER, yBuffer);
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gl.bufferData(gl.ARRAY_BUFFER, y, gl.STATIC_DRAW);
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const lineDrawer = new LineDrawer(gl);
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lineDrawer.set_xy(width, height, xBuffer, yBuffer, bbox);
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}
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function drawMe() {
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function draw() {
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gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
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lineDrawer.draw();
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}
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window.requestAnimationFrame(drawMe);
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function drawMe() {
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draw();
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animation = window.requestAnimationFrame(drawMe);
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}
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function resizeCanvas() {
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@ -208,7 +239,8 @@ class LineDrawer {
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resizeCanvas();
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window.addEventListener("resize", resizeCanvas, false);
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window.requestAnimationFrame(drawMe);
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// window.requestAnimationFrame(drawMe);
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const menu = document.getElementById("menu");
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const menu_toggle = document.getElementById("toggle-menu");
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@ -225,6 +257,27 @@ class LineDrawer {
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console.log("equation changed, wants: ", e.target.value);
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});
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let animation = null;
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let is_setup = false;
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const play_button = document.getElementById("toggle-playing");
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play_button.addEventListener("click", (_e) => {
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console.log("play/pause pressed");
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if (!animation) {
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if (!is_setup) {
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setup();
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}
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animation = window.requestAnimationFrame(drawMe);
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} else {
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window.cancelAnimationFrame(animation);
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animation = null;
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}
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});
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const reset_button = document.getElementById("reset");
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reset_button.addEventListener("click", (_e) => {
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window.cancelAnimationFrame(animation);
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animation = null;
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is_setup = false;
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setup();
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draw();
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});
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}());
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@ -1,9 +1,10 @@
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* { margin: 0; padding: 0; overflow: hidden; }
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html, body { width:100%; height:100%; }
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canvas { display:block; position: fixed; z-index: 1; }
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.canvas { display:block; position: fixed; z-index: -1; width: 100%; height: 100%; }
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select#eq-set { width: 100%; }
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.vertical-menu { position: fixed; width: 30%; min-width: 200px; top: 0; bottom: 30px; z-index: 2; background-color: #eee; display: flex; flex-direction: column; justify-content: space-between; padding: 0.5em; overflow-y: auto; }
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.menu-header { font-weight: bold; }
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.controls { position: relative; z-index: 3; top: calc(100% - 30px); height: 30px; display: flex; align-items: center; width: 175px; justify-content: space-around; opacity: 0.5; }
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.controls:hover { opacity: 1.0; }
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.menu-item { flex-shrink: 0; }
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.horizontal-flex { display: flex; flex-direction: row; align-items: center; justify-content: space-between; }
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