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index.html
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index.html
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<!--
ZzArt - Abstract Art Evolution
© Frank Force 2019
code credits
- download.js v4.21, by dandavis; 2008-2018. [MIT] see http://danml.com/download.html for tests/usage
- Smooth HSV by iq - https://www.shadertoy.com/view/MsS3Wc
- github-corners by Tim Holman - https://github.com/tholman/github-corners
todo
- poster option
- resolution
- 2x3 resolution
- background color
- margin
- line around image
- dpi
- color change button
- black and white
- scale variation button
-->
<!doctype html>
<html>
<head>
<style>
body,select { font-size: 20px; font-family: monospace; color: #FFF; }
input { font-size: 20px; }
a { color:#5AF; }
a:visited { color:#A5A; }
canvas { background-color: #FFF; }
div.satellite
{
display:none;
z-index:100;
position:relative;
-webkit-text-fill-color: white;
-webkit-text-stroke-width: 1px;
-webkit-text-stroke-color: black;
}
select
{
background-color: #000;
}
button
{
font-size: 30px;
vertical-align: middle;
text-align: center;
background-color: #EEE;
margin: 10px;
}
button.small
{
border-radius: 10px;
height:45px;
}
button.satellite
{
background-color: #FFF;
-webkit-text-fill-color: black;
-webkit-text-stroke-width: 1px;
color: #000;
font-size: 30px;
margin-top: 0px;
margin-right: 0px;
margin-left: 0px;
padding: 2px;
width:45px;
height:45px;
border-radius: 10px;
}
input.advanced
{
width:80px;
height:20px;
}
</style>
<title>ZzArt - Abstract Art Evolution</title>
<link rel="shortcut icon" type="image/x-icon" href="favicon.png"/>
<meta name="author" content="Frank Force">
<meta charset="utf-8">
</head>
<body bgcolor="#222">
<tag autocomplete=off autocorrect=off autocapitalize=off spellcheck=false/>
<div id=div_satellite class=satellite>
<button id=button_satelliteHelp class=satellite onclick=ButtonSatelliteHelp() title="Help">📡</button>
<button id=button_satelliteSave class=satellite onclick=ButtonSave() title="Save HD Image [S]">💾</button>
<font size=10><b>𝓩𝔃𝓐𝓻𝓽</b> - <span id=span_generationsSatellite>0</span></font><br></div>
<center>
<div id=div_title><font size=5><b>𝓩𝔃𝓐𝓻𝓽</b></font> - <span id=span_generations>0</span></div>
<div id=buttons_top>
<button class=small id=button_preview disabled onclick=ButtonTogglePreview() title="Toggle Preview [Spacebar]">🔍</button>
<button class=small id=button_back disabled onclick=ChangeMemoryLocation(-1) title="Undo [Z]">◄</button>
<button class=small id=button_forward disabled onclick=ChangeMemoryLocation(1) title="Redo [X]">►</button>
<button class=small id=button_save onclick=ButtonSave() title="Save HD Image [S]">💾</button>
<button class=small style="display:none;" id=button_saveFolder onclick=DisplaySaveListPage() title="Show Next Save Folder Page">📁</button>
<button class=small id=button_randomize onclick=ButtonRandomize() title="Randomize [R]">🎲</button>
<button class=small id=button_share onclick=ButtonShare() title="Copy Link To Clipboard">🔗</button>
<button class=small style="display:none;" id=button_seed onclick=ButtonSeed() title="Enter Seed">🌱</button>
<button class=small id=button_openSatellite onclick=ButtonSatellite() title="Open Satellite Preview">📡</button>
<button class=small id=button_advanced onclick=ButtonAdvanced() title="Advanced Controls">🔧</button>
<button class=small id=button_help onclick=ButtonHelp() title="Help">❓</button>
<button class=small style="display:none;" id=button_delete onclick=DeleteSelectedSave() title="Delete Selected Save">␡</button>
<br></div>
<canvas id=canvas_main width=1920 height=1080 style="width:1280px; height:720px; border:2px solid black;"></canvas>
<canvas id=canvas_shader hidden style="width:1280px; height:720px; border:2px solid black;"></canvas>
<canvas id=canvas_save hidden style="width:1280px; height:720px; border:2px solid black;"></canvas>
<br>
<div id=div_credit><font size=3>ZzArt © <a href="http://www.frankforce.com" target="_blank">Frank Force</a> 2019 ☮♥☻␌</font></div>
<div id=div_advanced style="display:none;"><hr><table><tr>
<td>
<center>Shadertoy Compatible GLSL Code
<br><textarea disabled id=textarea_code rows=10 cols=80></textarea>
<br><textarea disabled hidden id=textarea_debug style="color:#F00;" rows=4 cols=160></textarea>
<br>Base 64 JSON
<br><textarea disabled id=textarea_json rows=5 cols=80></textarea>
</center></td>
<td><center>
Saved Shaders
<br><select id=select_saveList onchange=SelectSavedShader(select_saveList.selectedIndex) style="width:350px;overflow:scrollY" size=10></select>
</center></td>
<td style='font-size: 20px; line-height: 40px;'><center>
<input id=checkbox_showWatermark onclick=UpdateUI() type=checkbox title="Toggle Watermark">Show Watermark
<br>Save Scale: <input type=number id=input_saveScale class=advanced value=2>
<br>Grid Size: <input type=number onchange=SetGridSize(parseInt(input_gridSize.value)) id=input_gridSize class=advanced value=5>
<br>Start Iterations: <input type=number id=input_startIterations class=advanced value=1>
<br>Randomize Length: <input type=number id=input_randomizeLength class=advanced value=15>
<br><button onclick=OpenCapJS()>Open in CapJS</button>
<br><button onclick=ExportSaveList()>Export Saves</button>
<br><button onclick=input_importFile.click()>Import Saves</button><input id=input_importFile type="file" style="display:none">
<br><button onclick=DeleteSelectedSave()>Delete Selected</button>
</center></td></tr></table></div>
</center>
<a href="https://github.com/KilledByAPixel/ZzArt" target="_blank" class="github-corner" aria-label="View source on GitHub"><svg width="80" height="80" viewBox="0 0 250 250" style="fill:#5AF; color:#222; position: absolute; top: 0; border: 0; right: 0;" aria-hidden="true"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path></svg></a><style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style>
<script>
"use strict"; // strict mode
///////////////////////////////////////////////////////////////////////////////////////////////////////////
// global variables
let canvasContext_main = canvas_main.getContext('2d');
let canvasContext_save = canvas_save.getContext('2d');
let canvasContext_shader = canvas_shader.getContext('webgl');
let defaultCanvasWidth = canvas_main.width;
let defaultCanvasHeight = canvas_main.height;
let shaderMemory = [];
let shaderGrid = [];
let gridSize = 5;
let favoriteShader = 0;
let shaderMemoryLocation = 0;
let showPreview = 0;
let advancedMode = 0;
let rotateCanvas = 0;
let dataVersion = 3;
let itchMode = 0;
let satelliteMode = 0;
let startIterations = 1;
let uniqueID = 0;
let isInit = 0;
let maxIterations = 9;
function Init()
{
isInit = 1;
uniqueID = RandSeeded();
InitWebgl();
shaderMemory.push(new ShaderObject());
if (!itchMode)
LoadFromURL();
LoadLocalStorage();
LoadSavedShaderList();
for(let i=0; i<gridSize; i++)
shaderGrid[i] = [];
if (satelliteMode)
InitSatelliteMode();
else
{
if (favoriteShader)
shaderMemory[shaderMemoryLocation] = favoriteShader;
SetFavoriteFromMemory();
if (!itchMode && IsMobile())
TryToRotate();
DrawShaders();
UpdateUI();
}
isInit = 0;
}
function InitSatelliteMode()
{
// redraw the favorite shader
canvas_shader.width = canvas_main.width;
canvas_shader.height = canvas_main.height;
favoriteShader.randSeed = 0;
// set ui for satellite mode
canvas_shader.style = 'position:absolute; left:0px; top:0px;width:100%;height:100%'
canvas_shader.style.zIndex = 10;
canvas_main.hidden = 1;
canvas_shader.hidden = 0;
buttons_top.style.display = 'none';
div_credit.style.display = 'none';
div_title.style.display = 'none';
div_title.style.display = 'none';
div_satellite.style.display = 'inline';
favoriteShader.Render();
setInterval(UpdateSatelliteMode, 100);
}
function UpdateSatelliteMode()
{
// continuous poll favorite from local storage
let localStorageItem = localStorage.saveData;
if (localStorageItem)
{
let saveData = JSON.parse(localStorage.saveData);
let rawObject = saveData.favorite;
if (rawObject.uniqueID != favoriteShader.uniqueID)
{
// redraw new favorite
favoriteShader = Object.assign(new ShaderObject(), rawObject).Clone();
favoriteShader.Render();
span_generationsSatellite.innerHTML = favoriteShader.GetGenerationString();
}
}
}
function TryToRotate()
{
// rotate canvas if window is more vertical then horizontal
let newRotateCanvas = window.innerHeight > window.innerWidth;
if (rotateCanvas == newRotateCanvas)
return;
rotateCanvas = newRotateCanvas;
if (rotateCanvas)
{
canvas_main.width = defaultCanvasHeight;
canvas_main.height = defaultCanvasWidth;
}
else
{
canvas_main.width = defaultCanvasWidth;
canvas_main.height = defaultCanvasHeight;
}
}
function RandomizeShaders()
{
saveListIndex = 0;
favoriteShader = new ShaderObject();
for(let i=9;i--;) Rand(); // warm up random number generator
for(let X=0; X<gridSize; X++)
for(let Y=0; Y<gridSize; Y++)
{
let shader = shaderGrid[X][Y] = favoriteShader.Clone();
shader.SetGridPos(X,Y);
shader.Randomize();
}
}
function DrawShaders()
{
let x = canvasContext_main;
let c = canvas_main;
c.width|=0;
let gap = 10;
let G = gridSize;
let SX = (c.width-gap)/G;
let SY = (c.height-gap)/G;
let W = (c.width - gap*(gridSize+1))/G;
let H = (c.height - gap*(gridSize+1))/G;
// use small hight for previews
canvas_shader.width = W;
canvas_shader.height = H;
for(let X=0; X<G; X++)
for(let Y=0; Y<G; Y++)
{
let shader = shaderGrid[X][Y];
shader.Render();
let posX = gap+SX*X;
let posY = gap+SY*Y;
x.drawImage(canvas_shader, posX, posY, W, H);
x.beginPath()
x.rect(posX,posY,W,H);
x.lineWidth=2;
x.strokeStyle='#000';
x.stroke();
}
if (favoriteShader.gridPosX >=0 && favoriteShader.gridPosY >=0)
{
let posX = gap+SX*favoriteShader.gridPosX;
let posY = gap+SY*favoriteShader.gridPosY;
x.beginPath()
x.rect(posX-gap/2,posY-gap/2,W+gap,H+gap);
x.lineWidth=7;
x.strokeStyle='#f00';
x.stroke();
}
}
function SetBest(bestX, bestY)
{
favoriteShader = shaderGrid[bestX][bestY];
favoriteShader.randSeed = randSeed;
++favoriteShader.subGeneration;
if (favoriteShader.generation == 0)
++favoriteShader.generation;
++shaderMemoryLocation;
shaderMemory.length = shaderMemoryLocation;
shaderMemory.push(favoriteShader.Clone());
MakeVariations(bestX, bestY);
DrawShaders();
UpdateUI();
}
function MakeVariations(skipX, skipY)
{
saveListIndex = 0;
textarea_code.value = favoriteShader.GetCode();
textarea_json.value = btoa(JSON.stringify(favoriteShader));
for(let X=0; X<gridSize; X++)
for(let Y=0; Y<gridSize; Y++)
{
let shader = shaderGrid[X][Y] = favoriteShader.Clone();
shader.SetGridPos(X,Y);
if (X!=skipX || Y!=skipY)
shader.Mutate();
}
}
function SetFavoriteFromMemory()
{
if (!favoriteShader)
{
RandomizeShaders();
return;
}
favoriteShader = shaderMemory[shaderMemoryLocation];
randSeed = favoriteShader.randSeed;
randSeedString = favoriteShader.randSeedString;
if (favoriteShader.IsVariation())
{
if (favoriteShader.gridPosX >= gridSize || favoriteShader.gridPosY >= gridSize)
favoriteShader.gridPosX = favoriteShader.gridPosY = 0;
let X = favoriteShader.gridPosX;
let Y = favoriteShader.gridPosY;
shaderGrid[X][Y] = favoriteShader.Clone();
MakeVariations(X, Y);
}
else if (favoriteShader.IsSaveList())
{
saveListIndex = favoriteShader.saveListIndex;
DisplaySaveListPage(0);
}
else
RandomizeShaders();
randSeedString = '';
}
///////////////////////////////////////////////////////////////////////////////
// SHADER OBJECT
class ShaderObject
{
constructor()
{
this.shaderStatements = [];
this.randSeed = randSeed;
this.randSeedString = randSeedString.length? randSeedString : ''+randSeed;
this.iterationCount = 1;
this.gridPosX = -1;
this.gridPosY = -1;
this.generation = 0;
this.subGeneration = 0;
this.hueOffset = 0;
this.hueScale = 1;
this.saturationScale = 1;
this.uvOffsetX = 0;
this.uvOffsetY = 0;
this.uvScaleX = 1;
this.uvScaleY = 1;
this.rotate = 0;
this.usePalette = 0;
this.paletteColors = [new Vector3(), new Vector3(), new Vector3(), new Vector3()];
this.saveListIndex = -1;
this.uniqueID=++uniqueID;
}
SetGridPos(X,Y) { this.gridPosX = X; this.gridPosY = Y; }
IsVariation() { return this.gridPosX >= 0; }
IsSaveList() { return this.saveListIndex >= 0; };
MakeAllObjectFloatsFixed(object, digits=3)
{
// keep floats small
for (let key in object)
{
let subObject = object[key];
if (typeof subObject === 'object')
this.MakeAllObjectFloatsFixed(subObject)
else if (typeof subObject === 'number')
object[key] = parseFloat(subObject.toFixed(digits));
}
}
Randomize()
{
let statementCount = parseInt(input_randomizeLength.value);
if (statementCount <0)
statementCount = 0;
this.usePalette = 1;
this.hueOffset = Rand();
this.hueScale = RandBetween(-1,1);
this.saturationScale = Rand();
this.generation = 0;
this.subGeneration = 0;
this.shaderStatements = [];
this.uvOffsetX = RandBetween(-1,1);
this.uvOffsetY = RandBetween(-1,1);
this.uvScaleX = RandBetween(-1,1);
this.uvScaleY = RandBetween(-1,1);
this.iterationCount = startIterations;
for(let i=statementCount; i--;)
{
let statement = new ShaderStatement();
statement.Randomize();
this.shaderStatements.push(statement);
}
for(let color of this.paletteColors)
color.Randomize(0,1);
this.MakeAllObjectFloatsFixed(this);
}
Clone()
{
let clone = Object.assign(new ShaderObject(), this);
clone.shaderStatements = [];
for(let statement of this.shaderStatements)
clone.shaderStatements.push(Object.assign(new ShaderStatement(), statement));
clone.paletteColors = [];
for(let color of this.paletteColors)
clone.paletteColors.push(Object.assign(new Vector3(), color));
// fix old shaders that had too high iterations
clone.iterationCount = Clamp(parseInt(clone.iterationCount),1,maxIterations);
return clone;
}
Mutate()
{
this.uniqueID = RandSeeded();
this.subGeneration = 0;
++this.generation;
if (this.shaderStatements.length <= 2)
{
this.Randomize();
return;
}
if (Rand() < .3)
{
// remove statement
let r = RandInt(this.shaderStatements.length);
let s = this.shaderStatements[r];
this.shaderStatements.splice(r, 1);
}
if (Rand() < .5)
{
// change order or a statement
let r = RandInt(this.shaderStatements.length);
let s = this.shaderStatements[r];
this.shaderStatements.splice(r, 1);
r = RandInt(this.shaderStatements.length+1);
this.shaderStatements.splice(r, 0, s);
}
for(let i=RandInt(2); i--;)
{
// mutate statements
let r = RandInt(this.shaderStatements.length);
this.shaderStatements[r].Mutate();
}
if (Rand() < .2)
{
// insert random statement
let statement = new ShaderStatement();
statement.Randomize();
let r = RandInt(this.shaderStatements.length+1);
this.shaderStatements.splice(r, 0, statement);
}
// mutate colors
this.hueOffset += RandBetween(-.1,.1)
if (Rand() < .2)
this.hueOffset = Rand();
if (Rand() < .2)
this.saturationScale = Rand();
if (Rand() < .2)
this.hueScale = RandBetween(-1,1);
if (Rand() < .4)
{
for(let color of this.paletteColors)
color.Randomize(0,1);
}
// mutate position
if (Rand() < .1)
{
this.uvOffsetX = RandBetween(-1,1);
this.uvOffsetY = RandBetween(-1,1);
this.uvScaleX = RandBetween(-1,1);
this.uvScaleY = RandBetween(-1,1);
}
else
{
this.uvOffsetX += RandBetween(-.1,.1);
this.uvOffsetY += RandBetween(-.1,.1);
this.uvScaleX += RandBetween(-.1,.1);
this.uvScaleY += RandBetween(-.1,.1);
}
if (Rand() < .1)
this.rotate = !this.rotate;
if (Rand() < .1)
this.iterationCount += RandInt(3)-1;
this.MakeAllObjectFloatsFixed(this);
}
GetCode()
{
let s = 10;
let uvsx = (s*this.uvScaleX).toFixed(3);
let uvsy = (s*this.uvScaleY).toFixed(3);
let uvox = (s*this.uvOffsetX).toFixed(3);
let uvoy = (s*this.uvOffsetY).toFixed(3);
let code = ``;
code += `// ZzArt - ${this.GetGenerationString()}\n\n`;
code += `const float PI=3.141592653589793;\n`;
if (this.usePalette)
code += `vec3 CosinePalette( float t, vec3 a, vec3 b, vec3 c, vec3 d ) { return a + b*cos( PI*2.*(c*t+d)); }\n`;
else
code += `vec3 SmoothHSV(vec3 c) { vec3 rgb = clamp(abs(mod(c.x*6.+vec3(0,4,2),6.)-3.)-1.,0.,1.); return c.z * mix( vec3(1), rgb*rgb*(3.-2.*rgb), c.y); }\n`
code += `vec4 lengthA(vec4 a) { return vec4(length(a)); }\n`;
code += `vec4 asinA(vec4 a) { return asin(clamp(a,-1.,1.)); }\n`;
code += `vec4 acosA(vec4 a) { return acos(clamp(a,-1.,1.)); }\n`;
code += `vec4 logA(vec4 a) { return log(abs(a)); }\n`;
code += `vec4 log2A(vec4 a) { return log2(abs(a)); }\n`;
code += `vec4 sqrtA(vec4 a) { return sqrt(abs(a)); }\n`;
code += `vec4 inversesqrtA(vec4 a) { return inversesqrt(abs(a)); }\n`;
code += `vec4 pow2(vec4 a) { return a*a; }\n`;
code += `vec4 pow3(vec4 a) { return a*a*a; }\n\n`;
code += `void mainImage(out vec4 a, in vec2 p)\n{\n`;
let rotateSwizzle = rotateCanvas^this.rotate? 'yxyx' : 'xyxy';
code += `a=p.${rotateSwizzle}/iResolution.${rotateSwizzle};\n`;
code += `a.xywz *= vec2(${uvsx}, ${uvsy}).xyxy;\n`;
code += `a.xywz += vec2(${uvox}, ${uvoy}).xyxy;\n`;
code += `vec4 b = a;\n\n`;
code += `// Generated Code - Line Count: ${this.shaderStatements.length}\n`
if (this.shaderStatements.length == 0)
code += `b=a=vec4(0.0);\n`;
else
{
if (this.iterationCount > 1)
code += `for (int i = 0; i < ${this.iterationCount}; ++i)\n{\n`
for(let statement of this.shaderStatements)
code += statement.GetString() + '\n';
if (this.iterationCount > 1)
code += `}\n`
}
// use hsl color
if (this.usePalette)
{
code += `\n// Cosine palettes by iq\n`
code += `a.x = a.x * ${(this.hueScale*.1).toFixed(3)}+${this.hueOffset.toFixed(3)};\n`
code += `a.xyz = b.x * CosinePalette(a.x`
for(let color of this.paletteColors)
code += `,\n ${color.GetShaderCode()}`;
code += `);\n`;
}
else
{
code += `\n// Smooth HSV by iq\n`
code += `a.x = a.x * ${this.hueScale.toFixed(3)}+${this.hueOffset.toFixed(3)};\n`;
code += `a.y *= ${this.saturationScale.toFixed(3)};\n`;
code += `a.xyz = SmoothHSV(a.xyz);\n`;
}
code += `}`;
return code;
}
Render()
{
let code = this.GetCode();
RenderShader(code);
}
GetGenerationString(shorten)
{
let string = ''
if (this.IsSaveList())
{
let page = 1+this.saveListIndex / (gridSize*gridSize)|0;
return 'Favorites Page: ' + page;
}
let seed = this.randSeedString?this.randSeedString:this.randSeed;
if (shorten)
string += `${seed}-`;
else
string += this.IsVariation()? 'Generation: ' : 'Seed: '
if (!this.IsVariation())
return string + seed;
if (this.subGeneration <= 1)
string += this.generation;
else
string += this.generation + '-' + (this.subGeneration>27?this.subGeneration:String.fromCharCode(65+this.subGeneration-2));
if (!shorten && this.IsVariation())
string += ` (${seed})`
return string;
}
};
///////////////////////////////////////////////////////////////////////////////////////////////////////////
// SHADER STUFF
class ShaderStatement
{
constructor()
{
this.output = 'a';
this.outputSwizzle = 'xyzw';
this.assignmentOperator = '=';
this.functionName = '';
this.parameter = 'a';
this.valueX = 1;
this.valueY = 1;
this.valueZ = 1;
this.valueW = 1;
this.parameterSwizzle = 'xyzw';
}
Randomize()
{
this.output = shaderRandomizer.Output();
this.assignmentOperator = shaderRandomizer.AssignmentOperator();
this.functionName = shaderRandomizer.FunctionName();
this.parameter = shaderRandomizer.Parameter();
this.valueX = shaderRandomizer.Value();
this.valueY = shaderRandomizer.Value();
this.valueZ = shaderRandomizer.Value();
this.valueW = shaderRandomizer.Value();
this.outputSwizzle = shaderRandomizer.Swizzle(1);
this.parameterSwizzle = shaderRandomizer.Swizzle();
}
Mutate()
{
let r = RandInt(10);
switch (r)
{
case 0: this.output = shaderRandomizer.Output(); break;
case 1: this.assignmentOperator = shaderRandomizer.AssignmentOperator(); break;
case 2: this.functionName = shaderRandomizer.FunctionName(); break;
case 3: this.outputSwizzle = shaderRandomizer.Swizzle(1); break;
case 4: this.parameter = shaderRandomizer.Parameter(); break;
case 5: this.parameterSwizzle = shaderRandomizer.Swizzle(); break;
case 6: this.valueX = shaderRandomizer.Value(); break;
case 7: this.valueY = shaderRandomizer.Value(); break;
case 8: this.valueZ = shaderRandomizer.Value(); break;
case 9: this.valueW = shaderRandomizer.Value(); break;
}
this.valueX += 0.05*RandBetween(-1,1);
this.valueY += 0.05*RandBetween(-1,1);
this.valueZ += 0.05*RandBetween(-1,1);
this.valueW += 0.05*RandBetween(-1,1);
}
GetString()
{
let parameter = '' + this.parameter;
if (parameter == '')
parameter = `vec4(${this.valueX.toFixed(3)}, ${this.valueY.toFixed(3)}, ${this.valueZ.toFixed(3)}, ${this.valueW.toFixed(3)})`;
let code;
code = this.output + '.' + this.outputSwizzle;
code += ' ' + this.assignmentOperator + ' ' + this.functionName
code += '(' + parameter + ')'
code += '.' + this.parameterSwizzle;
code += ';';
return code;
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////
// SHADER RANDOMIZER
let shaderRandomizer =
{
AssignmentOperator: function()
{
let f = ['=','+=','-=','*=','/='];
return f[RandInt(f.length)];
},
FunctionName: function()
{
if (Rand() < .5)
return '';
let f =
[
'sin','cos','normalize','lengthA',
'tan','asinA','acosA','atan',
'logA','log2A','exp','exp2',
'sqrtA','inversesqrtA','fract',
'abs','sign','floor','ceil',
'pow2','pow3'
];
return f[RandInt(f.length)];
},
Output: function()
{
let f = ['a','b'];
return f[RandInt(f.length)];
},
Value: function()
{
let v = RandBetween(0,1);
v = v * v;
v *= 10;
return RandInt(2)? v : -v;
},
Parameter: function()
{
let f = ['a','b','']
return f[RandInt(f.length)];
},
Swizzle: function(noDuplicates)
{
if (noDuplicates)
{
let s = ['x','y','z','w'];
s = ShuffleArray(s);
return s.join('');
}
let s = ['x','y','z','w'];
return s[RandInt(s.length)] + s[RandInt(s.length)] + s[RandInt(s.length)] + s[RandInt(s.length)];
}
};
///////////////////////////////////////////////////////////////////////////////////////////////////////////
// USER INTERFACE
function SetGridSize(newGridSize)
{
gridSize = Clamp(newGridSize,2,10);
shaderGrid=[];
for(let i=0; i<gridSize; i++)
shaderGrid[i] = [];
SetFavoriteFromMemory();
DrawShaders();
UpdateUI();
}
function UpdateUI(resetSaveListSelection=1)
{
if (satelliteMode)
return;
if (!isInit)
{
// clear url
let url = new URL(window.location.href);
url.search= "";
window.history.pushState(null,null,url.toString());
}
if (resetSaveListSelection)
select_saveList.selectedIndex=-1;
startIterations = Clamp(parseInt(input_startIterations.value), 1, maxIterations);
button_back.disabled = shaderMemoryLocation <= 0;
button_forward.disabled = shaderMemoryLocation >= shaderMemory.length-1;
button_preview.disabled = !favoriteShader || favoriteShader.gridPosX<0;
canvas_main.hidden = showPreview;
canvas_shader.hidden = !showPreview;
div_advanced.style.display = advancedMode? 'inline' : 'none';
button_delete.style.display = advancedMode? 'inline' : 'none';
button_help.style.display = advancedMode? 'none' : 'inline';
textarea_debug.hidden = textarea_debug.value == '';
button_saveFolder.style.display = saveList.length==0? 'none' : 'inline';
let s = shaderMemory[shaderMemoryLocation];
span_generations.innerHTML = s.GetGenerationString();
let isMobile = IsMobile();
if (isMobile || itchMode)
{
if (!itchMode)
button_help.style.display = 'none';
button_seed.style.display = 'inline';
button_advanced.style.display = 'none';
button_share.style.display = 'none';
div_credit.style.display = 'none';
button_openSatellite.style.display = 'none';
}
// set title
let shader = shaderMemory[shaderMemoryLocation];
document.title = `ZzArt - ` + shader.GetGenerationString();
// resize canvas to fit window
let a = canvas_main.width / canvas_main.height;
let w = window.innerWidth - (isMobile||itchMode?20:100);
let h = window.innerHeight - (itchMode?120:150);
let wa = w/h;
if (rotateCanvas)
wa = 1/wa;
if (wa > a)
w = h * a;
else
h = w / a;
canvas_main.style.width=w+'px';
canvas_main.style.height=h+'px';
canvas_shader.style.width=w+'px';
canvas_shader.style.height=h+'px';
SaveLocalStorage();
}
function ChangeMemoryLocation(direction)
{
if (shaderMemoryLocation + direction < 0 || shaderMemoryLocation + direction >= shaderMemory.length)
return;
if (showPreview)
{
showPreview = 0;
UpdateUI();
return;
}
shaderMemoryLocation+=direction;
SetFavoriteFromMemory();
DrawShaders();
UpdateUI();
}
function ButtonSatellite()
{
let url = new URL(window.location.href);
url.search = 'satellite=1';
window.open(url);
}
function ButtonSatelliteHelp()
{
window.alert(
`Welcome to 𝓩𝔃𝓐𝓻𝓽 ~ Abstract Art Evolution
This satellite 📡 mode allows you to view a full screen preview of our current favorite on a second monitor while browsing!`
);
}
function ButtonHelp()
{
window.alert(
`Welcome to 𝓩𝔃𝓐𝓻𝓽 ~ Abstract Art Evolution
To get started, click 🎲 a few times generate random seeds.
When you like something, just click it see more variations.
You can click 🔍 or press space to see a large preview.
Use 📡 to view open the large preview in a separate window.
Click 💾 to save your art as a 4K png image file.`
);
}
function Randomize(seed)
{
randSeed = seed;
showPreview = 0;
++shaderMemoryLocation;
shaderMemory.length=shaderMemoryLocation;
shaderMemory.push(new ShaderObject());
RandomizeShaders();
DrawShaders();
UpdateUI();
}
function ButtonRandomize()
{
let seed = Math.abs(Date.now() % 1e9);
Randomize(seed);
}
function ButtonSeed()
{
let seedString = window.prompt('Enter a ZzArt seed to use for randomization:', '');
if (seedString === null)
return;
seedString = String(seedString);
let seed = parseInt(seedString);
if (!Number.isInteger(seed))
seed = HashString(seedString);
if (seed==0)
seed = 1; // prevent it from being black
randSeedString = seedString;
Randomize(seed);
randSeedString = '';
}
function ButtonAdvanced()
{
advancedMode = !advancedMode;
UpdateUI();
}
function ButtonTogglePreview()
{
showPreview = !showPreview;
if (showPreview)
{
// redraw the favorite shader
canvas_shader.width = canvas_main.width;
canvas_shader.height = canvas_main.height;
if (favoriteShader && favoriteShader.IsVariation())
favoriteShader.Render();
}
UpdateUI();
}
function ButtonSave()
{
if (!favoriteShader)
return;
AddToSaveList(favoriteShader);
// save large
let saveScale = parseInt(input_saveScale.value);
if (saveScale <= 0)
return;
canvas_shader.width = saveScale*defaultCanvasWidth;
canvas_shader.height = saveScale*defaultCanvasHeight;
favoriteShader.Render();
let canvas = canvas_shader;