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index.html
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<html>
<head>
<title>hydro</title>
<style>
canvas {
position: fixed;
top: 0;
left: 0;
z-index: 0;
width: 100%;
height: 100%;
}
body {
margin: 0;
background: black;
overflow: auto;
height: 100%;
width: 100%;
}
.textarea-wrapper {
position: relative;
font-family: monospace;
display: flex;
}
.aligned {
margin: 0;
padding: 0;
position: absolute;
top: 0;
left: 0;
line-height: 1.3em;
overflow: hidden;
font-size: 20px;
width: 100%;
}
#code {
z-index: 2;
background-color: transparent;
border: 0;
outline: none;
resize: none;
color: white;
overflow: hidden;
height: 100%;
}
#highlighted-text {
color: transparent;
z-index: 1;
white-space: pre-wrap;
}
#highlighted-text > span {
background-color: #00000090;
}
</style>
</head>
<body>
<div class="textarea-wrapper">
<div id="highlighted-text" class="aligned"></div>
<textarea id="code" class="aligned" spellcheck="false"></textarea>
</div>
<canvas id="canvas"></canvas>
<script>
"use strict";
// what follows is a trimmed down version of kabelsalat/core
class Node {
constructor(type, value) {
this.type = type;
value !== undefined && (this.value = value);
this.ins = [];
}
}
const node = (type, value) => new Node(type, value);
Node.prototype.withIns = function (...ins) {
this.ins = ins;
return this;
};
function getNode(type, ...args) {
const next = node(type);
return next.withIns(...args.map((arg) => parseInput(arg, next)));
}
function parseInput(input, node) {
// array = sequence of floats, function = value setter function
if (Array.isArray(input) || typeof input === "function") {
return new Node("float", input);
}
if (typeof input === "object") {
return input;
}
if (typeof input === "number" && !isNaN(input)) {
return n(input);
}
if (typeof input === "string") {
return n(input);
}
console.log(
`invalid input type "${typeof input}" for node of type "${
node.type
}", falling back to 0. The input was:`,
input
);
return 0;
}
let nodeRegistry = new Map();
let register = (name, fn, schema) => {
schema && nodeRegistry.set(name, schema);
Node.prototype[name] = function (...args) {
return fn(this, ...args);
};
return fn;
};
let registerNode = (type, schema) =>
register(type, (...args) => getNode(type, ...args), schema);
let n = register(
"n",
(value) => {
if (typeof value === "object") {
return value;
}
return node("n", value);
},
{} // the compiler has a special case for n, so no need to pass compile function
);
Node.prototype.apply = function (fn) {
return fn(this);
};
Node.prototype.dfs = function (fn, visited) {
return this.apply((node) => dfs(node, fn, visited));
};
let dfs = (node, fn, visited = []) => {
node = fn(node, visited);
visited.push(node);
node.ins = node.ins.map((input) => {
if (visited.includes(input)) {
return input;
}
return dfs(input, fn, visited);
});
return node;
};
function flatten(node) {
const flat = [];
dfs(node, (node) => {
flat.push(node);
return node;
});
return flat.map((node) => {
let clone = {
...node,
type: node.type,
ins: node.ins.map((child) => flat.indexOf(child) + ""),
};
node.value !== undefined && (clone.value = node.value);
node.to !== undefined && (clone.to = flat.indexOf(node.to));
return clone;
});
}
function compile(node, options = {}) {
const {
log = false,
fallbackType = "thru",
constType = "n",
varPrefix = "n",
} = options;
log && console.log("compile", node);
const nodes = flatten(node);
// log && console.log("flat", nodes);
const sorted = topoSort(nodes);
let lines = [];
let v = (id) => {
if (nodes[id].type !== constType) {
return `${varPrefix}${id}`;
}
if (typeof nodes[id].value === "string") {
return `"${nodes[id].value}"`;
}
return nodes[id].value;
};
for (let id of sorted) {
const node = nodes[id];
const vars = nodes[id].ins.map((inlet) => v(inlet));
let schema = nodeRegistry.get(node.type);
if (!schema) {
console.warn(
`unhandled node type "${nodes[id].type}". falling back to "${fallbackType}"`
);
schema = nodeRegistry.get(fallbackType);
}
const meta = {
vars,
node,
nodes,
id,
name: v(id),
};
if (schema.compile) {
lines.push(schema.compile(meta));
}
}
const src = lines.join("\n");
if (log) {
console.log("compiled code:");
console.log(src);
}
return { src };
}
Node.prototype.compile = function (options) {
return compile(this, options);
};
// taken from noisecraft
// https://github.com/maximecb/noisecraft
// LICENSE: GPL-2.0
function topoSort(nodes) {
// Count the number of input edges going into a node
function countInEdges(nodeId) {
let node = nodes[nodeId];
let numIns = 0;
for (let i = 0; i < node.ins.length; ++i) {
let edge = node.ins[i];
if (!edge) continue;
if (remEdges.has(edge)) continue;
numIns++;
}
return numIns;
}
let S = []; // Set of nodes with no incoming edges
let L = []; // List sorted in reverse topological order
let remEdges = new Set(); // Map of input-side edges removed from the graph
let outEdges = new Map(); // Map of each node to a list of outgoing edges
// Populate the initial list of nodes without input edges
for (let nodeId in nodes) {
if (countInEdges(nodeId) == 0) {
S.push(nodeId);
}
}
// Initialize the set of list of output edges for each node
for (let nodeId in nodes) {
outEdges.set(nodeId, []);
}
// Populate the list of output edges for each node
for (let nodeId in nodes) {
let node = nodes[nodeId];
// For each input of this node
for (let i = 0; i < node.ins.length; ++i) {
let edge = node.ins[i];
if (edge === undefined) continue;
let srcId = node.ins[i];
let srcOuts = outEdges.get(srcId);
srcOuts.push([nodeId, edge]);
}
}
// While we have nodes with no inputs
while (S.length > 0) {
// Remove a node from S, add it at the end of L
var nodeId = S.pop();
L.push(nodeId);
// Get the list of output edges for this node
let nodeOuts = outEdges.get(nodeId);
// For each outgoing edge
for (let [dstId, edge] of nodeOuts) {
// Mark the edge as removed
remEdges.add(edge);
// If the node has no more incoming edges
if (countInEdges(dstId) == 0) S.push(dstId);
}
}
L = Array.from(new Set(L)); // <--- had to add this to make .apply(x=>x.mul(x)) work
// hopefully doesn't break anything
// If the topological ordering doesn't include all the nodes
if (L.length != Object.keys(nodes).length) {
throw SyntaxError("graph contains cycles");
}
return L;
}
//// Hydra specific logic
let glslNode = (functionName, schema) => {
if (!schema.type) {
throw new Error(`no "schema.type" set for node ${functionName}`);
}
if (!schema.args) {
throw new Error(`no "schema.args" set for node ${functionName}`);
}
return register(
functionName,
(...args) => getNode(functionName, ...schema.args(...args)),
{
compile: ({ vars, name }) =>
`${schema.type} ${name} = ${functionName}(${glslArgs(...vars)});`,
...schema,
}
);
};
let glslArgs = (...args) =>
args
.map((arg) => {
if (isNaN(Number(arg))) {
return arg;
}
if (Number.isInteger(Number(arg))) {
return arg + ".";
}
return arg;
})
.join(", ");
let _st = registerNode("_st", {
compile: ({ name }) => `vec2 ${name} = st;`,
});
let st = _st();
let _mouseX = registerNode("_mouseX", {
compile: ({ name }) => `float ${name} = iMouse.x;`,
});
let mouseX = _mouseX();
let _mouseY = registerNode("_mouseY", {
compile: ({ name }) => `float ${name} = iMouse.y;`,
});
let mouseY = _mouseY();
// SOURCES
let o0 = 0,
o1 = 1,
o2 = 2,
o3 = 3,
toRender = o0;
let render = (output = o0) => (toRender = output);
let _src = registerNode("src", {
compile: ({ vars, name }) => {
let tex = `tex${vars[1]}`;
return `vec4 ${name} = src(${glslArgs(vars[0])},${tex});`;
},
});
let src = register("src", (tex = o0) => {
if (typeof tex !== "number") {
// this is to avoid error when doing src(s0) atm
console.warn("src expects a number.. falling back to 0");
tex = 0;
}
return _src(st, tex);
});
// this allows using o0..o3 (=number) as texture inputs
let vec4 = (input) => (typeof input === "number" ? src(input) : input);
// this node is used to get a float in from the outside
// used for functions and sequences (Arrays)
let float = registerNode("float", {
compile: ({ vars, name, node }) => {
const uniformName = `float${node.id}`;
return `float ${name} = ${uniformName};`;
},
});
let _osc = registerNode("_osc", {
compile: ({ vars, name }) =>
`vec4 ${name} = osc(${glslArgs(...vars)});`,
});
let osc = register("osc", (freq = 60, sync = 0.1, offset = 0) =>
_osc(st, freq, sync, offset)
);
let _noise = registerNode("_noise", {
compile: ({ vars, name }) =>
`vec4 ${name} = noise(${glslArgs(...vars)});`,
});
let noise = register("noise", (scale = 10, offset = 0.1) =>
_noise(st, scale, offset)
);
let _voronoi = registerNode("_voronoi", {
compile: ({ vars, name }) =>
`vec4 ${name} = voronoi(${glslArgs(...vars)});`,
});
let voronoi = register(
"voronoi",
(scale = 5, speed = 0.3, blending = 0.3) =>
_voronoi(st, scale, speed, blending)
);
let _gradient = registerNode("_gradient", {
compile: ({ vars, name }) =>
`vec4 ${name} = gradient(${glslArgs(...vars)});`,
});
let gradient = register("gradient", (speed = 0) => _gradient(st, speed));
let _shape = registerNode("_shape", {
compile: ({ vars, name }) =>
`vec4 ${name} = shape(${glslArgs(...vars)});`,
});
let shape = register(
"shape",
(sides = 3, radius = 0.3, smoothing = 0.01) =>
_shape(st, sides, radius, smoothing)
);
let _solid = registerNode("_solid", {
compile: ({ vars, name }) =>
`vec4 ${name} = solid(${glslArgs(...vars)});`,
});
let solid = register("solid", (r = 0, g = 0, b = 0, a = 1) =>
_solid(st, r, g, b, a)
);
let outputs = { [o0]: solid() };
// GEOMETRY
function editGeometry(input, fn) {
// we need to edit all _st nodes in all parents
input.dfs((node, visited) => {
if (node.ins[0]?.type === "_st") {
node.ins[0] = fn(node.ins[0]);
visited.push(node.ins[0]); // prevents inifinite loop
}
return node;
});
return input;
}
let _rotate = registerNode("_rotate", {
compile: ({ vars, name }) =>
`vec2 ${name} = rotate(${glslArgs(...vars)});`,
});
let rotate = register("rotate", (input, angle = 10, speed = 0) =>
editGeometry(input, (st) => st._rotate(angle, speed))
);
let _scale = registerNode("_scale", {
compile: ({ vars, name }) =>
`vec2 ${name} = scale(${glslArgs(...vars)});`,
});
let scale = register(
"scale",
(
input,
amount = 1.5,
xMult = 1,
yMult = 1,
offsetX = 0.5,
offsetY = 0.5
) =>
editGeometry(input, (st) =>
st._scale(amount, xMult, yMult, offsetX, offsetY)
)
);
let _pixelate = registerNode("_pixelate", {
compile: ({ vars, name }) =>
`vec2 ${name} = pixelate(${glslArgs(...vars)});`,
});
let pixelate = register("pixelate", (input, pixelX = 20, pixelY = 20) =>
editGeometry(input, (st) => st._pixelate(pixelX, pixelY))
);
let _repeat = registerNode("_repeat", {
compile: ({ vars, name }) =>
`vec2 ${name} = repeat(${glslArgs(...vars)});`,
});
let repeat = register(
"repeat",
(input, repeatX = 3, repeatY = 3, offsetX = 0, offsetY = 0) =>
editGeometry(input, (st) =>
st._repeat(repeatX, repeatY, offsetX, offsetY)
)
);
let _repeatX = registerNode("_repeatX", {
compile: ({ vars, name }) =>
`vec2 ${name} = repeatX(${glslArgs(...vars)});`,
});
let repeatX = register("repeatX", (input, reps = 3, offset = 0) =>
editGeometry(input, (st) => st._repeatX(reps, offset))
);
let _repeatY = registerNode("_repeatY", {
compile: ({ vars, name }) =>
`vec2 ${name} = repeatY(${glslArgs(...vars)});`,
});
let repeatY = register("repeatY", (input, reps = 3, offset = 0) =>
editGeometry(input, (st) => st._repeatY(reps, offset))
);
let _kaleid = registerNode("_kaleid", {
compile: ({ vars, name }) =>
`vec2 ${name} = kaleid(${glslArgs(...vars)});`,
});
let kaleid = register("kaleid", (input, nSides = 4) =>
editGeometry(input, (st) => st._kaleid(nSides))
);
let _scroll = registerNode("_scroll", {
compile: ({ vars, name }) =>
`vec2 ${name} = scroll(${glslArgs(...vars)});`,
});
let scroll = register(
"scroll",
(input, scrollX = 0.5, scrollY = 0.5, speedX = 0, speedY = 0) =>
editGeometry(input, (st) =>
st._scroll(scrollX, scrollY, speedX, speedY)
)
);
let _scrollX = registerNode("_scrollX", {
compile: ({ vars, name }) =>
`vec2 ${name} = scrollX(${glslArgs(...vars)});`,
});
let scrollX = register("scrollX", (input, scroll = 0.5, speed = 0) =>
editGeometry(input, (st) => st._scrollX(scroll, speed))
);
let _scrollY = registerNode("_scrollY", {
compile: ({ vars, name }) =>
`vec2 ${name} = scrollY(${glslArgs(...vars)});`,
});
let scrollY = register("scrollY", (input, scroll = 0.5, speed = 0) =>
editGeometry(input, (st) => st._scrollY(scroll, speed))
);
// Color
let posterize = glslNode("posterize", {
type: "vec4",
args: (input, bins = 3, gamma = 0.6) => [vec4(input), bins, gamma],
});
let shift = glslNode("shift", {
type: "vec4",
args: (input, r = 0.5, g = 0, b = 0, a = 0) => [
vec4(input),
r,
g,
b,
a,
],
});
let invert = glslNode("invert", {
type: "vec4",
args: (input, amount = 1) => [vec4(input), amount],
});
let contrast = glslNode("contrast", {
type: "vec4",
args: (input, amount = 1.6) => [vec4(input), amount],
});
let brightness = glslNode("brightness", {
type: "vec4",
args: (input, amount = 0.4) => [vec4(input), amount],
});
let luma = glslNode("luma", {
type: "vec4",
args: (input, threshold = 0.5, tolerance = 0.1) => [
vec4(input),
threshold,
tolerance,
],
});
let thresh = glslNode("thresh", {
type: "vec4",
args: (input, threshold = 0.5, tolerance = 0.04) => [
vec4(input),
threshold,
tolerance,
],
});
let color = glslNode("color", {
type: "vec4",
args: (input, r = 1, g = 1, b = 1, a = 1) => [vec4(input), r, g, b, a],
});
let saturate = glslNode("saturate", {
type: "vec4",
args: (input, amount = 2) => [vec4(input), amount],
});
let hue = glslNode("hue", {
type: "vec4",
args: (input, hue = 0.4) => [vec4(input), hue],
});
let colorama = glslNode("colorama", {
type: "vec4",
args: (input, amount = 0.005) => [vec4(input), amount],
});
let r = glslNode("r", {
type: "vec4",
args: (input, scale = 1, offset = 0) => [vec4(input), scale, offset],
});
let g = glslNode("g", {
type: "vec4",
args: (input, scale = 1, offset = 0) => [vec4(input), scale, offset],
});
let b = glslNode("b", {
type: "vec4",
args: (input, scale = 1, offset = 0) => [vec4(input), scale, offset],
});
// clashes with audio object
/* let a = glslNode("a", {
type: "vec4",
args: (input, scale = 1, offset = 0) => [vec4(input), scale, offset],
}); */
// blend
let add = glslNode("add", {
type: "vec4",
args: (input, texture, amount = 1) => [
vec4(input),
vec4(texture),
amount,
],
});
let sub = glslNode("sub", {
type: "vec4",
args: (input, texture, amount = 1) => [
vec4(input),
vec4(texture),
amount,
],
});
let layer = glslNode("layer", {
type: "vec4",
args: (input, texture) => [vec4(input), vec4(texture)],
});
let blend = glslNode("blend", {
type: "vec4",
args: (input, texture, amount = 0.5) => [
vec4(input),
vec4(texture),
amount,
],
});
let mult = glslNode("mult", {
type: "vec4",
args: (input, texture, amount = 1) => [
vec4(input),
vec4(texture),
amount,
],
});
let diff = glslNode("diff", {
type: "vec4",
args: (input, texture) => [vec4(input), vec4(texture)],
});
let mask = glslNode("mask", {
type: "vec4",
args: (input, texture) => [vec4(input), vec4(texture)],
});
// modulate
let _modulate = registerNode("_modulate", {
compile: ({ vars, name }) =>
`vec2 ${name} = modulate(${glslArgs(...vars)});`,
});
let modulate = register("modulate", (input, modulator, amount = 0.1) =>
editGeometry(input, (st) => st._modulate(vec4(modulator), amount))
);
let _modulateRepeat = registerNode("_modulateRepeat", {
compile: ({ vars, name }) =>
`vec2 ${name} = modulateRepeat(${glslArgs(...vars)});`,
});
let modulateRepeat = register(
"modulateRepeat",
(
input,
texture,
repeatX = 3,
repeatY = 3,
offsetX = 0.5,
offsetY = 0.5
) =>
editGeometry(input, (st) =>
st._modulateRepeat(
vec4(texture),
repeatX,
repeatY,
offsetX,
offsetY
)
)
);
let _modulateRepeatX = registerNode("_modulateRepeatX", {
compile: ({ vars, name }) =>
`vec2 ${name} = modulateRepeatX(${glslArgs(...vars)});`,
});
let modulateRepeatX = register(
"modulateRepeatX",
(input, texture, reps = 3, offset = 0.5) =>
editGeometry(input, (st) =>
st._modulateRepeatX(vec4(texture), reps, offset)
)
);
let _modulateRepeatY = registerNode("_modulateRepeatY", {
compile: ({ vars, name }) =>
`vec2 ${name} = modulateRepeatY(${glslArgs(...vars)});`,
});
let modulateRepeatY = register(
"modulateRepeatY",
(input, texture, reps = 3, offset = 0.5) =>
editGeometry(input, (st) =>
st._modulateRepeatY(vec4(texture), reps, offset)
)
);
let _modulateKaleid = registerNode("_modulateKaleid", {
compile: ({ vars, name }) =>
`vec2 ${name} = modulateKaleid(${glslArgs(...vars)});`,
});
let modulateKaleid = register(
"modulateKaleid",
(input, texture, nSides = 4) =>
editGeometry(input, (st) => st._modulateKaleid(vec4(texture), nSides))
);
let _modulateScrollX = registerNode("_modulateScrollX", {
compile: ({ vars, name }) =>
`vec2 ${name} = modulateScrollX(${glslArgs(...vars)});`,
});
let modulateScrollX = register(
"modulateScrollX",
(input, texture, scrollX = 0.5, speed = 0) =>
editGeometry(input, (st) =>
st._modulateScrollX(vec4(texture), scrollX, speed)
)
);
let _modulateScrollY = registerNode("_modulateScrollY", {
compile: ({ vars, name }) =>
`vec2 ${name} = modulateScrollY(${glslArgs(...vars)});`,
});
let modulateScrollY = register(
"modulateScrollY",
(input, texture, scrollY = 0.5, speed = 0) =>
editGeometry(input, (st) =>
st._modulateScrollY(vec4(texture), scrollY, speed)
)
);
let _modulateScale = registerNode("_modulateScale", {
compile: ({ vars, name }) =>
`vec2 ${name} = modulateScale(${glslArgs(...vars)});`,
});
let modulateScale = register(
"modulateScale",
(input, texture, multiple = 1, offset = 1) =>
editGeometry(input, (st) =>
st._modulateScale(vec4(texture), multiple, offset)
)
);
let _modulatePixelate = registerNode("_modulatePixelate", {
compile: ({ vars, name }) =>
`vec2 ${name} = modulatePixelate(${glslArgs(...vars)});`,
});
let modulatePixelate = register(
"modulatePixelate",
(input, texture, multiple = 10, offset = 13) =>
editGeometry(input, (st) =>
st._modulatePixelate(vec4(texture), multiple, offset)
)
);
let _modulateRotate = registerNode("_modulateRotate", {
compile: ({ vars, name }) =>
`vec2 ${name} = modulateRotate(${glslArgs(...vars)});`,
});
let modulateRotate = register(
"modulateRotate",
(input, texture, multiple = 1, offset = 0) =>
editGeometry(input, (st) =>
st._modulateRotate(vec4(texture), multiple, offset)
)
);
let _modulateHue = registerNode("_modulateHue", {
compile: ({ vars, name }) =>
`vec2 ${name} = modulateHue(${glslArgs(...vars)});`,
});
let modulateHue = register("modulateHue", (input, texture, amount = 1) =>
editGeometry(input, (st) => st._modulateHue(vec4(texture), amount))
);
let draw = registerNode("draw", {
compile: ({ vars, name }) => `fragColor = ${vars[0]};`,
});
let exit = registerNode("exit", { internal: true });
// read base64 code from url
let urlCode = window.location.hash.slice(1);
let parseCode = (hash) => decodeURIComponent(atob(hash));
let hashCode = (code) => btoa(encodeURIComponent(code));
if (urlCode) {
urlCode = parseCode(urlCode);
console.log("loaded code from url!");
}
// use urlCode or fall back to default shadertoy example
const initialShader =
urlCode ||
`osc(11, 0.01, 1.4)
.rotate(0, 0.1)
.mult(
osc(10, 0.1)
.modulate(
osc(10)
.rotate(0, -0.1),
1
)
)
.color(2.83,0.91,0.39)
.out()`;
// global vars
let programs = {}; // needs global var to reuse textures
let then = 0; // last render callback time
let time = 0; // time in seconds
let mouse = { x: 0, y: 0 };
let speed = 1;
let width = canvas.width;
let height = canvas.height;
let bpm = 30;
// stub definition for audio object
let a = {
fft: [0, 0, 0, 0],
setSmooth: () => {},
setCutoff: () => {},
setBins: () => {},
setScale: () => {},
hide: () => {},
show: () => {},
};
// Array functions
function enhanceArray(method, fn) {
Object.defineProperty(Array.prototype, method, {
value: function (...args) {
return fn(this, ...args);
},
enumerable: false,
writable: false,
configurable: false,
});
}
enhanceArray("fast", (arr, speed = 1) => {
arr._speed = speed;
return arr;
});
enhanceArray("offset", (arr, offset = 0.5) => {
arr._offset = offset % 1;
return arr;
});
let remap = (num, in_min, in_max, out_min, out_max) => {
return (
((num - in_min) * (out_max - out_min)) / (in_max - in_min) + out_min
);
};
enhanceArray("fit", (arr, low = 0, high = 1) => {
let lowest = Math.min(...arr);
let highest = Math.max(...arr);
var newArr = arr.map((num) => remap(num, lowest, highest, low, high));
newArr._speed = arr._speed;
newArr._smooth = arr._smooth;
newArr._ease = arr._ease;
return newArr;
});
enhanceArray("smooth", (arr, smooth = 1) => {
arr._smooth = smooth;
return arr;
});
// from https://gist.github.com/gre/1650294
let easing = {
// no easing, no acceleration
linear: (t) => t,
// accelerating from zero velocity
easeInQuad: (t) => t * t,
// decelerating to zero velocity
easeOutQuad: (t) => t * (2 - t),
// acceleration until halfway, then deceleration
easeInOutQuad: (t) => (t < 0.5 ? 2 * t * t : -1 + (4 - 2 * t) * t),
// accelerating from zero velocity
easeInCubic: (t) => t * t * t,
// decelerating to zero velocity
easeOutCubic: (t) => --t * t * t + 1,
// acceleration until halfway, then deceleration
easeInOutCubic: (t) =>
t < 0.5 ? 4 * t * t * t : (t - 1) * (2 * t - 2) * (2 * t - 2) + 1,
// accelerating from zero velocity
easeInQuart: (t) => t * t * t * t,
// decelerating to zero velocity
easeOutQuart: (t) => 1 - --t * t * t * t,
// acceleration until halfway, then deceleration
easeInOutQuart: (t) =>
t < 0.5 ? 8 * t * t * t * t : 1 - 8 * --t * t * t * t,
// accelerating from zero velocity
easeInQuint: (t) => t * t * t * t * t,
// decelerating to zero velocity
easeOutQuint: (t) => 1 + --t * t * t * t * t,
// acceleration until halfway, then deceleration
easeInOutQuint: (t) =>
t < 0.5 ? 16 * t * t * t * t * t : 1 + 16 * --t * t * t * t * t,
// sin shape
sin: (t) => 1 + Math.sin(Math.PI * t - Math.PI / 2),
};
enhanceArray("ease", (arr, ease = "linear") => {
arr._smooth = 1;
if (typeof ease == "function") {
arr._ease = ease;
} else if (easing[ease]) {
arr._ease = easing[ease];
}
return arr;
});
// synth settings (stub definitions)
let update = () => console.warn("update function not implemented");
let setResolution = () =>
console.warn("setResolution function not implemented");
let hush = () => console.warn("hush function not implemented");
let setFunction = () =>
console.warn("setFunction function not implemented");
let sourceStub = {
initCam: () => console.warn("s0.initCam not implemented"),
};
let s0 = sourceStub,
s1 = sourceStub,
s2 = sourceStub,
s3 = sourceStub;
// speed
function main() {
// set up code input
const input = document.querySelector("#code");
const wrapper = document.querySelector(".textarea-wrapper");
const highlightedText = document.querySelector("#highlighted-text");
function updateLineBackground() {
const lines = input.value.split("\n");
highlightedText.innerHTML = `<span>${lines.join(
"</span>\n<span>"
)}</span> `;
wrapper.style.height = highlightedText.clientHeight;
}
document.body.onclick = () => input.focus();
input.value = initialShader;
updateLineBackground();
window.codestyle = (attr, value) => (input.style[attr] = value);
let examples;
let loadExamples = async () => {
if (!examples) {
let res = await fetch(
"https://raw.githubusercontent.com/hydra-synth/hydra/main/src/stores/examples.json"
);
examples = await res.json();
}
return examples;
};
let runExample = (example) => {
console.log("run example", example);
const code = parseCode(example.code);
input.value = code;
updateLineBackground();
window.location.hash = "#" + hashCode(code);
evaluate(code);
};
window.shuffle = async () => {
let examples = await loadExamples();
const example = examples[Math.floor(Math.random() * examples.length)];
runExample(example);
};
window.example = async (index = 0) => {