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the-pixel.js
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the-pixel.js
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var res = 30;
var h = 0;
var a = 100;
var aDir = -1;
var glyphSeed = 1;
var glyphs;
function setup() {
var canvas = makeCanvas();
background(0);
glyphs = makeGlyphs();
}
var glyphFrame = 0;
function draw() {
scanLines();
var glyphsLine = (height - (res * 3));
glyphsLine = glyphsLine - (glyphsLine % res);
drawGlyphs(glyphs, glyphsLine);
noStroke();
for (var y=0; y<height; y+=res) {
for (var x=0; x<width; x+=res) {
var closest = height*2;
var winStart = max(x-100, 0);
var winEnd = min(x+100, width);
for (var lineX = winStart; lineX < winEnd; lineX++) {
var lineY = a * sin((lineX-h) / 50) + height / 2;
if (dist(float(x), float(y), lineX, lineY) < closest) {
closest = dist(float(x), float(y), lineX, lineY);
}
}
if (closest < 50) {
fill(0, map(closest, 0, 50, 255, 0), 0);
rect(x, y, res, res);
}
}
}
h-=5;
glyphFrame++;
if (glyphFrame % 10 == 0) {
glyphs = makeGlyphs();
}
if (aDir == 1) a += 5;
if (aDir == -1) a -= 5;
if (a >= 150) aDir = -1;
if (a <= 20) aDir = 1;
//saveFrame("screens/screen-####.png");
}
function drawGlyph(glyph, x, y) {
if (glyph[0] == 1) rect(x, y, res, res);
if (glyph[1] == 1) rect(x+res, y, res, res);
if (glyph[2] == 1) rect(x, y+res, res, res);
if (glyph[3] == 1) rect(x+res, y+res, res, res);
}
function drawGlyphs(glyphs, y) {
var left = res;
for (var x = 0; x < glyphs.length; x++) {
fill(0, 255, 0);
drawGlyph(glyphs[x], left, y);
left += res * 3;
}
}
function makeGlyphs() {
var numGlyphs = floor(random((width - res) / (res * 3)));
var glyphs = new Array(numGlyphs);
for (var x = 0; x < numGlyphs; x++) {
var row = [
random(1) > 0.5 ? 1 : 0,
random(1) > 0.5 ? 1 : 0,
random(1) > 0.5 ? 1 : 0,
random(1) > 0.5 ? 1 : 0];
glyphs[x] = row;
}
return glyphs;
}
function scanLines() {
background(color(15,59,19));
for (var y = 0; y < height; y += res*2) {
fill(21,82,26);
rect(0, y, width, res);
}
}