move all functionality to common js
This commit is contained in:
Magnus Ulimoen
parent
e1ed7ca083
commit
9261f1b239
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@ -135,24 +135,26 @@ pub struct ShallowWaterUniverse(shallow_water::System);
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impl ShallowWaterUniverse {
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impl ShallowWaterUniverse {
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#[wasm_bindgen(constructor)]
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#[wasm_bindgen(constructor)]
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pub fn new(height: usize, width: usize) -> Self {
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pub fn new(height: usize, width: usize) -> Self {
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let x = (0.0, 1.0, width);
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let x = (-0.5, 0.5, width);
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let y = (0.0, 1.0, height);
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let y = (-0.5, 0.5, height);
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Self(shallow_water::System::new(x, y))
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Self(shallow_water::System::new(x, y))
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}
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}
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pub fn init(&mut self, x0: f32, y0: f32) {
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pub fn init(&mut self, x0: f32, y0: f32) {
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let nx = self.0.nx();
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let nx = self.0.nx();
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let ny = self.0.ny();
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let ny = self.0.ny();
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let x = ndarray::Array1::linspace(0.0, 1.0, nx);
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let x = ndarray::Array1::linspace(-0.5, 0.5, nx);
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let y = ndarray::Array1::linspace(0.0, 1.0, ny);
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let y = ndarray::Array1::linspace(-0.5, 0.5, ny);
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let (mut eta, mut etau, mut etav) = self.0.components_mut();
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let (mut eta, mut etau, mut etav) = self.0.components_mut();
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let sigma = 0.1;
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let sigma = 0.1;
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for j in 0..ny {
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for j in 0..ny {
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let y = y[j];
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for i in 0..nx {
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for i in 0..nx {
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let r = f32::hypot(x[i] - x0, y[j] - y0);
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let x = x[i];
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let r = f32::hypot(x - x0, y - y0);
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let f = 1.0 / (sigma * (2.0 * sbp::consts::PI).sqrt())
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let f = 1.0 / (sigma * (2.0 * sbp::consts::PI).sqrt())
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* f32::exp(-0.5 * (r / sigma).powi(2));
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* f32::exp(-0.5 * (r / sigma).powi(2));
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@ -1,69 +0,0 @@
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<!doctype html>
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<!--https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API/Tutorial/Adding_2D_content_to_a_WebGL_context-->
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="">
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<head>
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<meta charset="utf-8" />
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<meta name="generator" content="by-hand" />
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<meta name="viewport" context="width=device-width, inital-scale=1.0, user-scalable=yes" />
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<title>ΣBP Solver</title>
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<link rel="stylesheet" type="text/css" href="style.css">
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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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</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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<select id="eq-set" name="eq-set">
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<option value="euler"> Euler</option>
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<option value="maxwell"> Maxwell</option>
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<option value="shallow"> Shallow Water</option>
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</select>
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<div class="eq-set-options" id="euler-options">
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The compressible Euler equations
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</div>
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<div class="eq-set-options" id="maxwell-options">
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The Maxwell equations in 2D
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</div>
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<div class="eq-set-options" id="shallow-options">
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The Shallow Water Equations describes the surface of a body of water
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</div>
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</div>
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<div class="grid menu-item">
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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">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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<p>More information can be found along with the <a href="https://ulimoen.dev/git/mulimoen/SBPonWEB">source code</a>.</p>
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</div>
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</div>
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<div class="controls">
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<button title="Menu" class="control-item" id="toggle-menu" type="button">☰</button>
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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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@ -1,301 +0,0 @@
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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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ctx.shaderSource(vsShader, vsource);
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const fsShader = ctx.createShader(ctx.FRAGMENT_SHADER);
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ctx.shaderSource(fsShader, fsource);
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ctx.compileShader(vsShader);
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ctx.compileShader(fsShader);
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ctx.attachShader(program, vsShader);
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ctx.attachShader(program, fsShader);
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ctx.linkProgram(program);
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ctx.validateProgram(program);
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if (!ctx.getProgramParameter(program, ctx.LINK_STATUS)) {
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console.error(`Linking of lineProgram failed: ${ctx.getProgramInfoLog(program)}`);
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console.error(`vertex shader infolog: ${ctx.getShaderInfoLog(vsShader)}`);
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console.error(`fragment shader infolog: ${ctx.getShaderInfoLog(fsShader)}`);
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return null;
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}
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ctx.deleteShader(vsShader);
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ctx.deleteShader(fsShader);
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return program;
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}
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class LineDrawer {
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constructor(ctx) {
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function lineProgram(ctx) {
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const LINE_VERTEX_SHADER = String.raw`
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#version 100
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attribute mediump float aX;
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attribute mediump float aY;
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uniform vec4 uBbox;
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void main() {
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mediump float x = (aX - uBbox.x)*uBbox.y;
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mediump float y = (aY - uBbox.z)*uBbox.w;
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gl_Position = vec4(2.0*x - 1.0, 2.0*y - 1.0, 1.0, 1.0);
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}
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`;
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const LINE_FRAGMENT_SHADER = String.raw`
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#version 100
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void main() {
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gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
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}
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`;
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const program = compile_and_link(ctx, LINE_VERTEX_SHADER, LINE_FRAGMENT_SHADER);
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const uBbox = ctx.getUniformLocation(program, "uBbox");
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return {inner: program, uniforms: {"uBbox": uBbox}};
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};
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this.program = lineProgram(ctx);
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this.ctx = ctx;
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}
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set_xy(width, height, xBuffer, yBuffer, bbox) {
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const ctx = this.ctx;
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ctx.useProgram(this.program.inner);
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{
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let loc = ctx.getAttribLocation(this.program.inner, "aX");
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ctx.bindBuffer(ctx.ARRAY_BUFFER, xBuffer);
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ctx.vertexAttribPointer(loc, 1, ctx.FLOAT, false, 0, 0);
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ctx.enableVertexAttribArray(loc);
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loc = ctx.getAttribLocation(this.program.inner, "aY");
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ctx.bindBuffer(ctx.ARRAY_BUFFER, yBuffer);
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ctx.vertexAttribPointer(loc, 1, ctx.FLOAT, false, 0, 0);
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ctx.enableVertexAttribArray(loc);
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}
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const lineIdxBuffer = new Uint16Array(2*width*height - 1);
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{
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let n = 0;
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for (let j = 0; j < height; j++) {
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for (let i = 0; i < width; i++) {
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if (j % 2 == 0) {
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lineIdxBuffer[n] = width*j + i;
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} else {
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lineIdxBuffer[n] = width*(j + 1) - i - 1;
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}
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n += 1;
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}
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}
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let m = lineIdxBuffer[n-1];
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let updown = "down";
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let lr;
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if (height % 2 === 0) {
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lr = "left";
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} else {
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lr = "right";
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}
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for (let i = 0; i < width; i++) {
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for (let j = 0; j < height-1; j++) {
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if (updown === "up") {
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m += width;
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} else {
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m -= width;
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}
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lineIdxBuffer[n] = m;
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n += 1;
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}
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if (n === 2*width*height - 1) {
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continue;
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}
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if (lr === "left") {
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m += 1;
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} else {
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m -= 1;
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}
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lineIdxBuffer[n] = m;
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n += 1;
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if (updown === "down") {
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updown = "up";
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} else {
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updown = "down";
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}
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}
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}
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this.indexBuffer = ctx.createBuffer();
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ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, this.indexBuffer);
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ctx.bufferData(ctx.ELEMENT_ARRAY_BUFFER, lineIdxBuffer, ctx.STATIC_DRAW);
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ctx.uniform4f(this.program.uniforms.uBbox, bbox[0], 1.0/(bbox[1] - bbox[0]), bbox[2], 1.0/(bbox[3] - bbox[2]));
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this.width = width;
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this.height = height;
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}
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draw() {
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const ctx = this.ctx;
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ctx.useProgram(this.program.inner);
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ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, this.indexBuffer);
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ctx.drawElements(ctx.LINE_STRIP, 2*this.width*this.height - 1, ctx.UNSIGNED_SHORT, 0);
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}
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}
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(async function run() {
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const eq_sel = document.getElementById("eq-set");
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display_eqset(eq_sel.value);
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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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if (gl === null) {
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console.error("Unable to initialise WebGL");
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return;
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}
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console.info("Successfully opened webgl canvas");
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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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gl.clearDepth(1.0);
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gl.enable(gl.DEPTH_TEST);
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gl.depthFunc(gl.LEQUAL);
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gl.disable(gl.CULL_FACE);
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gl.lineWidth(1.0);
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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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lineDrawer.set_xy(width, height, xBuffer, yBuffer, bbox);
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}
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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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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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canvas.width = window.innerWidth;
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canvas.height = window.innerHeight;
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gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
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}
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resizeCanvas();
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window.addEventListener("resize", resizeCanvas, false);
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const menu = document.getElementById("menu");
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const menu_toggle = document.getElementById("toggle-menu");
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menu_toggle.addEventListener("click", () => {
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if (menu.style.visibility === "") {
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menu.style.visibility = "hidden";
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} else {
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menu.style.visibility = "";
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}
|
|
||||||
});
|
|
||||||
|
|
||||||
eq_sel.addEventListener("change", (e) => {
|
|
||||||
console.log("equation changed, wants: ", e.target.value);
|
|
||||||
display_eqset(eq_sel.value);
|
|
||||||
});
|
|
||||||
function display_eqset(value) {
|
|
||||||
const euler_options = document.getElementById("euler-options");
|
|
||||||
euler_options.style.display = "none";
|
|
||||||
const maxwell_options = document.getElementById("maxwell-options");
|
|
||||||
maxwell_options.style.display = "none";
|
|
||||||
const shallow_options = document.getElementById("shallow-options");
|
|
||||||
shallow_options.style.display = "none";
|
|
||||||
if (value === "euler") {
|
|
||||||
euler_options.style.display = "block";
|
|
||||||
} else if (value === "maxwell") {
|
|
||||||
maxwell_options.style.display = "block";
|
|
||||||
} else if (value === "shallow") {
|
|
||||||
shallow_options.style.display = "block";
|
|
||||||
} else {
|
|
||||||
console.error(`Unknown value ${value}`);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
let animation = null;
|
|
||||||
let is_setup = false;
|
|
||||||
const play_button = document.getElementById("toggle-playing");
|
|
||||||
play_button.addEventListener("click", (_e) => {
|
|
||||||
console.log("play/pause pressed");
|
|
||||||
if (!animation) {
|
|
||||||
if (!is_setup) {
|
|
||||||
setup();
|
|
||||||
}
|
|
||||||
animation = window.requestAnimationFrame(drawMe);
|
|
||||||
} else {
|
|
||||||
window.cancelAnimationFrame(animation);
|
|
||||||
animation = null;
|
|
||||||
}
|
|
||||||
});
|
|
||||||
const reset_button = document.getElementById("reset");
|
|
||||||
reset_button.addEventListener("click", (_e) => {
|
|
||||||
window.cancelAnimationFrame(animation);
|
|
||||||
animation = null;
|
|
||||||
is_setup = false;
|
|
||||||
setup();
|
|
||||||
draw();
|
|
||||||
});
|
|
||||||
}());
|
|
||||||
|
|
@ -50,9 +50,11 @@
|
||||||
Curvilinear? Inputting some random json?
|
Curvilinear? Inputting some random json?
|
||||||
-->
|
-->
|
||||||
</div>
|
</div>
|
||||||
|
<!--
|
||||||
<div class="gen_set menu-item">
|
<div class="gen_set menu-item">
|
||||||
<p class="menu-header">Settings</p>
|
<p class="menu-header">Settings</p>
|
||||||
</div>
|
</div>
|
||||||
|
-->
|
||||||
<div class="about menu-item">
|
<div class="about menu-item">
|
||||||
<p class="menu-header">About</p>
|
<p class="menu-header">About</p>
|
||||||
<p>More information can be found along with the <a href="https://ulimoen.dev/git/mulimoen/SBPonWEB">source code</a>.</p>
|
<p>More information can be found along with the <a href="https://ulimoen.dev/git/mulimoen/SBPonWEB">source code</a>.</p>
|
||||||
|
|
@ -62,6 +64,7 @@
|
||||||
<button title="Menu" class="control-item" id="toggle-menu" type="button">☰</button>
|
<button title="Menu" class="control-item" id="toggle-menu" type="button">☰</button>
|
||||||
<button title="Play/pause" class="control-item" id="toggle-playing">▶️/⏸️</button>
|
<button title="Play/pause" class="control-item" id="toggle-playing">▶️/⏸️</button>
|
||||||
<button title="Reset" class="control-item" id="reset">🔄️</button>
|
<button title="Reset" class="control-item" id="reset">🔄️</button>
|
||||||
|
<button title="Change field" class="control-item" id="fieldButton">C</button>
|
||||||
</div>
|
</div>
|
||||||
</body>
|
</body>
|
||||||
</html>
|
</html>
|
||||||
|
|
|
||||||
|
|
@ -49,7 +49,7 @@ class LineDrawer {
|
||||||
#version 100
|
#version 100
|
||||||
|
|
||||||
void main() {
|
void main() {
|
||||||
gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
|
gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);
|
||||||
}
|
}
|
||||||
`;
|
`;
|
||||||
const program = compile_and_link(ctx, LINE_VERTEX_SHADER, LINE_FRAGMENT_SHADER);
|
const program = compile_and_link(ctx, LINE_VERTEX_SHADER, LINE_FRAGMENT_SHADER);
|
||||||
|
|
@ -63,18 +63,8 @@ class LineDrawer {
|
||||||
}
|
}
|
||||||
set_xy(width, height, xBuffer, yBuffer, bbox) {
|
set_xy(width, height, xBuffer, yBuffer, bbox) {
|
||||||
const ctx = this.ctx;
|
const ctx = this.ctx;
|
||||||
ctx.useProgram(this.program.inner);
|
this.xBuffer = xBuffer;
|
||||||
{
|
this.yBuffer = yBuffer;
|
||||||
let loc = ctx.getAttribLocation(this.program.inner, "aX");
|
|
||||||
ctx.bindBuffer(ctx.ARRAY_BUFFER, xBuffer);
|
|
||||||
ctx.vertexAttribPointer(loc, 1, ctx.FLOAT, false, 0, 0);
|
|
||||||
ctx.enableVertexAttribArray(loc);
|
|
||||||
|
|
||||||
loc = ctx.getAttribLocation(this.program.inner, "aY");
|
|
||||||
ctx.bindBuffer(ctx.ARRAY_BUFFER, yBuffer);
|
|
||||||
ctx.vertexAttribPointer(loc, 1, ctx.FLOAT, false, 0, 0);
|
|
||||||
ctx.enableVertexAttribArray(loc);
|
|
||||||
}
|
|
||||||
const lineIdxBuffer = new Uint16Array(2*width*height - 1);
|
const lineIdxBuffer = new Uint16Array(2*width*height - 1);
|
||||||
{
|
{
|
||||||
let n = 0;
|
let n = 0;
|
||||||
|
|
@ -128,6 +118,7 @@ class LineDrawer {
|
||||||
ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, this.indexBuffer);
|
ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, this.indexBuffer);
|
||||||
ctx.bufferData(ctx.ELEMENT_ARRAY_BUFFER, lineIdxBuffer, ctx.STATIC_DRAW);
|
ctx.bufferData(ctx.ELEMENT_ARRAY_BUFFER, lineIdxBuffer, ctx.STATIC_DRAW);
|
||||||
|
|
||||||
|
ctx.useProgram(this.program.inner);
|
||||||
ctx.uniform4f(this.program.uniforms.uBbox, bbox[0], 1.0/(bbox[1] - bbox[0]), bbox[2], 1.0/(bbox[3] - bbox[2]));
|
ctx.uniform4f(this.program.uniforms.uBbox, bbox[0], 1.0/(bbox[1] - bbox[0]), bbox[2], 1.0/(bbox[3] - bbox[2]));
|
||||||
this.width = width;
|
this.width = width;
|
||||||
this.height = height;
|
this.height = height;
|
||||||
|
|
@ -135,6 +126,18 @@ class LineDrawer {
|
||||||
draw() {
|
draw() {
|
||||||
const ctx = this.ctx;
|
const ctx = this.ctx;
|
||||||
ctx.useProgram(this.program.inner);
|
ctx.useProgram(this.program.inner);
|
||||||
|
{
|
||||||
|
let loc;
|
||||||
|
loc = ctx.getAttribLocation(this.program.inner, "aX");
|
||||||
|
ctx.bindBuffer(ctx.ARRAY_BUFFER, this.xBuffer);
|
||||||
|
ctx.vertexAttribPointer(loc, 1, ctx.FLOAT, false, 0, 0);
|
||||||
|
ctx.enableVertexAttribArray(loc);
|
||||||
|
|
||||||
|
loc = ctx.getAttribLocation(this.program.inner, "aY");
|
||||||
|
ctx.bindBuffer(ctx.ARRAY_BUFFER, this.yBuffer);
|
||||||
|
ctx.vertexAttribPointer(loc, 1, ctx.FLOAT, false, 0, 0);
|
||||||
|
ctx.enableVertexAttribArray(loc);
|
||||||
|
}
|
||||||
ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, this.indexBuffer);
|
ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, this.indexBuffer);
|
||||||
|
|
||||||
ctx.drawElements(ctx.LINE_STRIP, 2*this.width*this.height - 1, ctx.UNSIGNED_SHORT, 0);
|
ctx.drawElements(ctx.LINE_STRIP, 2*this.width*this.height - 1, ctx.UNSIGNED_SHORT, 0);
|
||||||
|
|
@ -144,13 +147,113 @@ class LineDrawer {
|
||||||
class FieldDrawer {
|
class FieldDrawer {
|
||||||
constructor(ctx) {
|
constructor(ctx) {
|
||||||
this.ctx = ctx;
|
this.ctx = ctx;
|
||||||
this.fbuffer = ctx.createBuffer();
|
|
||||||
|
|
||||||
//link_and_bind_program(.., ..);
|
const VERT_SHADER = String.raw`
|
||||||
|
#version 100
|
||||||
|
attribute mediump float aX;
|
||||||
|
attribute mediump float aY;
|
||||||
|
attribute mediump float aField;
|
||||||
|
|
||||||
|
uniform vec4 uBbox;
|
||||||
|
|
||||||
|
varying mediump float vField;
|
||||||
|
|
||||||
|
void main() {
|
||||||
|
vField = aField;
|
||||||
|
mediump float x = (aX - uBbox.x)*uBbox.y;
|
||||||
|
mediump float y = (aY - uBbox.z)*uBbox.w;
|
||||||
|
gl_Position = vec4(2.0*x - 1.0, 2.0*y - 1.0, 1.0, 1.0);
|
||||||
|
}
|
||||||
|
`;
|
||||||
|
|
||||||
|
const FRAG_SHADER = String.raw`
|
||||||
|
#version 100
|
||||||
|
varying mediump float vField;
|
||||||
|
|
||||||
|
uniform mediump vec3 uColor;
|
||||||
|
uniform mediump float uFieldMin;
|
||||||
|
uniform mediump float uFieldMax;
|
||||||
|
|
||||||
|
void main() {
|
||||||
|
mediump float v = (vField - uFieldMin) / (uFieldMax - uFieldMin);
|
||||||
|
gl_FragColor = vec4(mix(vec3(0.0), uColor, v), 1.0);
|
||||||
|
}
|
||||||
|
`;
|
||||||
|
|
||||||
|
const program = compile_and_link(ctx, VERT_SHADER, FRAG_SHADER);
|
||||||
|
this.fBuffer = ctx.createBuffer();
|
||||||
|
|
||||||
|
const uniforms = {
|
||||||
|
uBbox: ctx.getUniformLocation(program, "uBbox"),
|
||||||
|
uColor: ctx.getUniformLocation(program, "uColor"),
|
||||||
|
uFieldMin: ctx.getUniformLocation(program, "uFieldMin"),
|
||||||
|
uFieldMax: ctx.getUniformLocation(program, "uFieldMax"),
|
||||||
|
};
|
||||||
|
|
||||||
|
this.program = {inner: program, uniforms: uniforms};
|
||||||
|
}
|
||||||
|
set_xy(width, height, xBuffer, yBuffer, bbox) {
|
||||||
|
const ctx = this.ctx;
|
||||||
|
this.xBuffer = xBuffer;
|
||||||
|
this.yBuffer = yBuffer;
|
||||||
|
ctx.useProgram(this.program.inner);
|
||||||
|
ctx.uniform4f(this.program.uniforms.uBbox, bbox[0], 1.0/(bbox[1] - bbox[0]), bbox[2], 1.0/(bbox[3] - bbox[2]));
|
||||||
|
this.setColor(0.0, 1.0, 0.0);
|
||||||
|
|
||||||
|
const positions = new Uint16Array((width-1)*(height-1)*2*3);
|
||||||
|
for (let j = 0; j < height - 1; j += 1) {
|
||||||
|
for (let i = 0; i < width - 1; i += 1) {
|
||||||
|
const n = 2*3*((width-1)*j + i);
|
||||||
|
positions[n+0] = width*j + i;
|
||||||
|
positions[n+1] = width*j + i+1;
|
||||||
|
positions[n+2] = width*(j+1) + i;
|
||||||
|
positions[n+3] = width*j + i+1;
|
||||||
|
positions[n+4] = width*(j+1) + i;
|
||||||
|
positions[n+5] = width*(j+1) + i+1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
this.positions = positions;
|
||||||
|
this.indexBuffer = ctx.createBuffer();
|
||||||
|
ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, this.indexBuffer);
|
||||||
|
ctx.bufferData(ctx.ELEMENT_ARRAY_BUFFER, this.positions, ctx.STATIC_DRAW);
|
||||||
|
}
|
||||||
|
setColor() {
|
||||||
|
this.ctx.uniform3f(this.program.uniforms.uColor, 0.0, 1.0, 0.0);
|
||||||
|
}
|
||||||
|
draw(field) {
|
||||||
|
const ctx = this.ctx;
|
||||||
|
ctx.useProgram(this.program.inner);
|
||||||
|
{
|
||||||
|
let loc;
|
||||||
|
loc = ctx.getAttribLocation(this.program.inner, "aX");
|
||||||
|
ctx.bindBuffer(ctx.ARRAY_BUFFER, this.xBuffer);
|
||||||
|
ctx.vertexAttribPointer(loc, 1, ctx.FLOAT, false, 0, 0);
|
||||||
|
ctx.enableVertexAttribArray(loc);
|
||||||
|
|
||||||
|
loc = ctx.getAttribLocation(this.program.inner, "aY");
|
||||||
|
ctx.bindBuffer(ctx.ARRAY_BUFFER, this.yBuffer);
|
||||||
|
ctx.vertexAttribPointer(loc, 1, ctx.FLOAT, false, 0, 0);
|
||||||
|
ctx.enableVertexAttribArray(loc);
|
||||||
|
|
||||||
|
loc = ctx.getAttribLocation(this.program.inner, "aField");
|
||||||
|
ctx.bindBuffer(ctx.ARRAY_BUFFER, this.fBuffer);
|
||||||
|
ctx.bufferData(ctx.ARRAY_BUFFER, field, ctx.DYNAMIC_DRAW);
|
||||||
|
ctx.vertexAttribPointer(loc, 1, ctx.FLOAT, false, 0, 0);
|
||||||
|
ctx.enableVertexAttribArray(loc);
|
||||||
|
}
|
||||||
|
|
||||||
|
ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, this.indexBuffer);
|
||||||
|
ctx.drawElements(ctx.TRIANGLES, this.positions.length, ctx.UNSIGNED_SHORT, 0);
|
||||||
|
}
|
||||||
|
minmax(min, max) {
|
||||||
|
this.ctx.useProgram(this.program.inner);
|
||||||
|
this.ctx.uniform1f(this.program.uniforms.uFieldMin, min);
|
||||||
|
this.ctx.uniform1f(this.program.uniforms.uFieldMax, max);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
(async function run() {
|
(async function run() {
|
||||||
|
let is_setup = false;
|
||||||
const eq_sel = document.getElementById("eq-set");
|
const eq_sel = document.getElementById("eq-set");
|
||||||
display_eqset(eq_sel.value);
|
display_eqset(eq_sel.value);
|
||||||
|
|
||||||
|
|
@ -170,6 +273,7 @@ class FieldDrawer {
|
||||||
let y;
|
let y;
|
||||||
let width;
|
let width;
|
||||||
let height;
|
let height;
|
||||||
|
const bbox = [+Number(Infinity), -Number(Infinity), +Number(Infinity), -Number(Infinity)];
|
||||||
|
|
||||||
// A nice pink to show missing values
|
// A nice pink to show missing values
|
||||||
gl.clearColor(1.0, 0.753, 0.796, 1.0);
|
gl.clearColor(1.0, 0.753, 0.796, 1.0);
|
||||||
|
|
@ -182,8 +286,11 @@ class FieldDrawer {
|
||||||
const xBuffer = gl.createBuffer();
|
const xBuffer = gl.createBuffer();
|
||||||
const yBuffer = gl.createBuffer();
|
const yBuffer = gl.createBuffer();
|
||||||
const lineDrawer = new LineDrawer(gl);
|
const lineDrawer = new LineDrawer(gl);
|
||||||
|
const fieldDrawer = new FieldDrawer(gl);
|
||||||
let universe;
|
let universe;
|
||||||
|
|
||||||
|
let eq_set;
|
||||||
|
|
||||||
function setup() {
|
function setup() {
|
||||||
width = parseInt(document.getElementById("xN").value);
|
width = parseInt(document.getElementById("xN").value);
|
||||||
height = parseInt(document.getElementById("yN").value);
|
height = parseInt(document.getElementById("yN").value);
|
||||||
|
|
@ -202,8 +309,8 @@ class FieldDrawer {
|
||||||
for (let j = 0; j < height; j += 1) {
|
for (let j = 0; j < height; j += 1) {
|
||||||
for (let i = 0; i < width; i += 1) {
|
for (let i = 0; i < width; i += 1) {
|
||||||
const n = width*j + i;
|
const n = width*j + i;
|
||||||
x[n] = dx*i;
|
x[n] = x0 + dx*i;
|
||||||
y[n] = dy*j;
|
y[n] = y0 + dy*j;
|
||||||
|
|
||||||
if (diamond) {
|
if (diamond) {
|
||||||
const xn = x[n];
|
const xn = x[n];
|
||||||
|
|
@ -215,23 +322,29 @@ class FieldDrawer {
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
const eq_set = eq_sel.value;
|
eq_set = eq_sel.value;
|
||||||
switch (eq_set) {
|
switch (eq_set) {
|
||||||
case "maxwell":
|
case "maxwell":
|
||||||
universe = new MaxwellUniverse(height, width, x, y);
|
universe = new MaxwellUniverse(height, width, x, y);
|
||||||
|
universe.init(0.0, 0.0);
|
||||||
break;
|
break;
|
||||||
case "euler":
|
case "euler":
|
||||||
universe = new EulerUniverse();
|
universe = new EulerUniverse(height, width, x, y);
|
||||||
|
universe.init(0.0, 0.0);
|
||||||
break;
|
break;
|
||||||
case "shallow":
|
case "shallow":
|
||||||
universe = new ShallowWaterUniverse();
|
universe = new ShallowWaterUniverse(height, width);
|
||||||
|
universe.init(0.0, 0.0);
|
||||||
break;
|
break;
|
||||||
default:
|
default:
|
||||||
console.error(`Unknown case ${eq_set}`);
|
console.error(`Unknown case ${eq_set}`);
|
||||||
return null;
|
return null;
|
||||||
}
|
}
|
||||||
|
|
||||||
const bbox = [+Number(Infinity), -Number(Infinity), +Number(Infinity), -Number(Infinity)];
|
bbox[0] = +Number(Infinity);
|
||||||
|
bbox[1] = -Number(Infinity);
|
||||||
|
bbox[2] = +Number(Infinity);
|
||||||
|
bbox[3] = -Number(Infinity);
|
||||||
for (let i = 0; i < width*height; i += 1) {
|
for (let i = 0; i < width*height; i += 1) {
|
||||||
bbox[0] = Math.min(bbox[0], x[i]);
|
bbox[0] = Math.min(bbox[0], x[i]);
|
||||||
bbox[1] = Math.max(bbox[1], x[i]);
|
bbox[1] = Math.max(bbox[1], x[i]);
|
||||||
|
|
@ -244,22 +357,99 @@ class FieldDrawer {
|
||||||
gl.bufferData(gl.ARRAY_BUFFER, y, gl.STATIC_DRAW);
|
gl.bufferData(gl.ARRAY_BUFFER, y, gl.STATIC_DRAW);
|
||||||
|
|
||||||
lineDrawer.set_xy(width, height, xBuffer, yBuffer, bbox);
|
lineDrawer.set_xy(width, height, xBuffer, yBuffer, bbox);
|
||||||
|
fieldDrawer.set_xy(width, height, xBuffer, yBuffer, bbox);
|
||||||
}
|
}
|
||||||
|
|
||||||
function draw() {
|
function draw() {
|
||||||
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
|
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
|
||||||
|
|
||||||
lineDrawer.draw();
|
|
||||||
}
|
|
||||||
|
|
||||||
function drawMe() {
|
|
||||||
const w = canvas.clientWidth;
|
const w = canvas.clientWidth;
|
||||||
const h = canvas.clientHeight;
|
const h = canvas.clientHeight;
|
||||||
canvas.width = w;
|
canvas.width = w;
|
||||||
canvas.height = h;
|
canvas.height = h;
|
||||||
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
|
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
|
||||||
|
|
||||||
|
let fieldPtr;
|
||||||
|
switch (eq_set) {
|
||||||
|
case "maxwell":
|
||||||
|
chosenField %= 3;
|
||||||
|
switch (chosenField) {
|
||||||
|
case 0:
|
||||||
|
fieldPtr = universe.get_ex_ptr();
|
||||||
|
fieldDrawer.minmax(-1.0, 1.0);
|
||||||
|
break;
|
||||||
|
case 1:
|
||||||
|
fieldPtr = universe.get_hz_ptr();
|
||||||
|
fieldDrawer.minmax(-1.0, 1.0);
|
||||||
|
break;
|
||||||
|
case 2:
|
||||||
|
fieldPtr = universe.get_ey_ptr();
|
||||||
|
fieldDrawer.minmax(-1.0, 1.0);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case "euler":
|
||||||
|
chosenField %= 4;
|
||||||
|
switch (chosenField) {
|
||||||
|
case 0:
|
||||||
|
fieldPtr = universe.get_rho_ptr();
|
||||||
|
fieldDrawer.minmax(0.95, 1.05);
|
||||||
|
break;
|
||||||
|
case 1:
|
||||||
|
fieldPtr = universe.get_rhou_ptr();
|
||||||
|
fieldDrawer.minmax(0.90, 1.10);
|
||||||
|
break;
|
||||||
|
case 2:
|
||||||
|
fieldPtr = universe.get_rhov_ptr();
|
||||||
|
fieldDrawer.minmax(-1.10, 1.10);
|
||||||
|
break;
|
||||||
|
case 3:
|
||||||
|
fieldPtr = universe.get_e_ptr();
|
||||||
|
fieldDrawer.minmax(7.0, 10.0);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case "shallow":
|
||||||
|
chosenField %= 3;
|
||||||
|
switch (chosenField) {
|
||||||
|
case 0:
|
||||||
|
fieldPtr = universe.get_eta_ptr();
|
||||||
|
fieldDrawer.minmax(0.8, 1.1);
|
||||||
|
break;
|
||||||
|
case 1:
|
||||||
|
fieldPtr = universe.get_etau_ptr();
|
||||||
|
fieldDrawer.minmax(-0.5, 0.5);
|
||||||
|
break;
|
||||||
|
case 2:
|
||||||
|
fieldPtr = universe.get_etav_ptr();
|
||||||
|
fieldDrawer.minmax(-0.5, 0.5);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
console.error("Not implemented");
|
||||||
|
}
|
||||||
|
let field = new Float32Array(wasm.memory.buffer, fieldPtr, width*height);
|
||||||
|
fieldDrawer.draw(field);
|
||||||
|
lineDrawer.draw();
|
||||||
|
}
|
||||||
|
|
||||||
|
async function drawLoop() {
|
||||||
draw();
|
draw();
|
||||||
animation = window.requestAnimationFrame(drawMe);
|
switch (eq_set) {
|
||||||
|
case "maxwell":
|
||||||
|
universe.advance(0.2*Math.min(1/width, 1/height));
|
||||||
|
break;
|
||||||
|
case "euler":
|
||||||
|
universe.advance_upwind(0.2*Math.min(1/width, 1/height));
|
||||||
|
break;
|
||||||
|
case "shallow":
|
||||||
|
universe.advance();
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
console.error(`Not implemented: ${eq_set}`);
|
||||||
|
}
|
||||||
|
animation = window.requestAnimationFrame(drawLoop);
|
||||||
}
|
}
|
||||||
|
|
||||||
const menu = document.getElementById("menu");
|
const menu = document.getElementById("menu");
|
||||||
|
|
@ -270,11 +460,11 @@ class FieldDrawer {
|
||||||
} else {
|
} else {
|
||||||
menu.style.visibility = "";
|
menu.style.visibility = "";
|
||||||
}
|
}
|
||||||
});
|
}, {"passive": false});
|
||||||
|
|
||||||
eq_sel.addEventListener("change", (e) => {
|
eq_sel.addEventListener("change", (e) => {
|
||||||
display_eqset(eq_sel.value);
|
display_eqset(eq_sel.value);
|
||||||
});
|
}, {"passive": true});
|
||||||
function display_eqset(value) {
|
function display_eqset(value) {
|
||||||
const euler_options = document.getElementById("euler-options");
|
const euler_options = document.getElementById("euler-options");
|
||||||
euler_options.style.display = "none";
|
euler_options.style.display = "none";
|
||||||
|
|
@ -282,37 +472,67 @@ class FieldDrawer {
|
||||||
maxwell_options.style.display = "none";
|
maxwell_options.style.display = "none";
|
||||||
const shallow_options = document.getElementById("shallow-options");
|
const shallow_options = document.getElementById("shallow-options");
|
||||||
shallow_options.style.display = "none";
|
shallow_options.style.display = "none";
|
||||||
|
function default_axes(x0, xn, y0, yn) {
|
||||||
|
document.getElementById("x0").value = x0;
|
||||||
|
document.getElementById("xn").value = xn;
|
||||||
|
document.getElementById("y0").value = y0;
|
||||||
|
document.getElementById("yn").value = yn;
|
||||||
|
}
|
||||||
if (value === "euler") {
|
if (value === "euler") {
|
||||||
euler_options.style.display = "block";
|
euler_options.style.display = "block";
|
||||||
|
default_axes(-5.0, 5.0, -5.0, 5.0);
|
||||||
} else if (value === "maxwell") {
|
} else if (value === "maxwell") {
|
||||||
maxwell_options.style.display = "block";
|
maxwell_options.style.display = "block";
|
||||||
|
default_axes(-1.0, 1.0, -1.0, 1.0);
|
||||||
} else if (value === "shallow") {
|
} else if (value === "shallow") {
|
||||||
shallow_options.style.display = "block";
|
shallow_options.style.display = "block";
|
||||||
|
default_axes(-1.0, 1.0, -1.0, 1.0);
|
||||||
} else {
|
} else {
|
||||||
console.error(`Unknown value ${value}`);
|
console.error(`Unknown value ${value}`);
|
||||||
}
|
}
|
||||||
|
is_setup = false;
|
||||||
}
|
}
|
||||||
|
|
||||||
let animation = null;
|
let animation = null;
|
||||||
let is_setup = false;
|
|
||||||
const play_button = document.getElementById("toggle-playing");
|
const play_button = document.getElementById("toggle-playing");
|
||||||
play_button.addEventListener("click", (_e) => {
|
play_button.addEventListener("click", (_e) => {
|
||||||
if (!animation) {
|
if (!animation) {
|
||||||
if (!is_setup) {
|
if (!is_setup) {
|
||||||
setup();
|
setup();
|
||||||
|
is_setup = true;
|
||||||
}
|
}
|
||||||
animation = window.requestAnimationFrame(drawMe);
|
animation = window.requestAnimationFrame(drawLoop);
|
||||||
} else {
|
} else {
|
||||||
|
if (is_setup) {
|
||||||
window.cancelAnimationFrame(animation);
|
window.cancelAnimationFrame(animation);
|
||||||
animation = null;
|
animation = null;
|
||||||
}
|
}
|
||||||
});
|
}
|
||||||
|
}, {"passive": true});
|
||||||
const reset_button = document.getElementById("reset");
|
const reset_button = document.getElementById("reset");
|
||||||
reset_button.addEventListener("click", (_e) => {
|
reset_button.addEventListener("click", (_e) => {
|
||||||
|
if (is_setup) {
|
||||||
window.cancelAnimationFrame(animation);
|
window.cancelAnimationFrame(animation);
|
||||||
animation = null;
|
animation = null;
|
||||||
is_setup = false;
|
}
|
||||||
setup();
|
setup();
|
||||||
|
is_setup = true;
|
||||||
draw();
|
draw();
|
||||||
});
|
}, {"passive": true});
|
||||||
|
let chosenField = 0;
|
||||||
|
const chosenFieldButton = document.getElementById("fieldButton");
|
||||||
|
chosenFieldButton.addEventListener("click", (_e) => {
|
||||||
|
chosenField += 1;
|
||||||
|
if (is_setup) {
|
||||||
|
draw();
|
||||||
|
}
|
||||||
|
}, {"passive": true});
|
||||||
|
canvas.addEventListener("click", (e) => {
|
||||||
|
if (is_setup) {
|
||||||
|
const mousex = (e.clientX / canvas.clientWidth)*(bbox[1] - bbox[0]) + bbox[0];
|
||||||
|
const mousey = (1.0 - e.clientY / canvas.clientHeight)*(bbox[3] - bbox[2]) + bbox[2];
|
||||||
|
universe.init(mousex, mousey);
|
||||||
|
draw();
|
||||||
|
}
|
||||||
|
}, {"passive": false});
|
||||||
}());
|
}());
|
||||||
|
|
|
||||||
|
|
@ -1,10 +1,10 @@
|
||||||
* { margin: 0; padding: 0; overflow: hidden; }
|
* { margin: 0; padding: 0; overflow: hidden; }
|
||||||
html, body { width:100%; height:100%; }
|
html, body { width:100%; height:100%; }
|
||||||
canvas { display:block; position: fixed; z-index: -1; width: 100vw; height: 100vh; }
|
canvas { display:block; position: fixed; width: 100vw; height: 100vh; }
|
||||||
select#eq-set { width: 100%; }
|
select#eq-set { width: 100%; }
|
||||||
.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; }
|
.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; }
|
||||||
.menu-header { font-weight: bold; }
|
.menu-header { font-weight: bold; }
|
||||||
.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; }
|
.controls { position: relative; z-index: 3; top: calc(100% - 30px); height: 30px; display: flex; align-items: center; width: 100%; justify-content: flex-start; opacity: 0.5; }
|
||||||
.controls:hover { opacity: 1.0; }
|
.controls:hover { opacity: 1.0; }
|
||||||
.menu-item { flex-shrink: 0; }
|
.menu-item { flex-shrink: 0; }
|
||||||
.horizontal-flex { display: flex; flex-direction: row; align-items: center; justify-content: space-between; }
|
.horizontal-flex { display: flex; flex-direction: row; align-items: center; justify-content: space-between; }
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue