mirror of
https://git.anonymousland.org/anonymousland/anonymousland.git
synced 2024-10-01 11:49:49 -04:00
89 lines
3.3 KiB
JavaScript
89 lines
3.3 KiB
JavaScript
let layer1, layer2, layer3, layer4;
|
|
let themeBase;
|
|
|
|
$(document).ready(() => {
|
|
layer1 = d3.select("#bg-layer1");
|
|
layer2 = d3.select("#bg-layer2");
|
|
layer3 = d3.select("#bg-layer3");
|
|
layer4 = d3.select("#bg-layer4");
|
|
themeBase = localStorage.getItem("themeBase") || document.getElementById("css-theme").getAttribute("href").match("-(light|dark).css")[1];
|
|
setTheme(themeBase);
|
|
makeStrips([layer1, layer2, layer3, layer4]);
|
|
$(document).scroll(updateBackground);
|
|
$(window).resize(updateBackground);
|
|
$("table").addClass("table table-hover");
|
|
$("img").addClass("img img-responsive");
|
|
$(".content-div > h1, .content-div > a > h1").addClass("h1-strip");
|
|
setTimeout(updateBackground, 500);
|
|
});
|
|
|
|
function drawLine(x, y, w, h, layer) {
|
|
let line = layer.append("rect")
|
|
.attr("x", x)
|
|
.attr("y", y)
|
|
.attr("width", w)
|
|
.attr("height", h)
|
|
.attr("fill", "url(#Gradient1)");
|
|
}
|
|
|
|
function updateBackground() {
|
|
// Update stripes
|
|
let contentX = ($(".content-div").offset().left);
|
|
let layer1Y = window.pageYOffset / 5;
|
|
let layer2Y = window.pageYOffset / 4;
|
|
let layer3Y = window.pageYOffset / 3;
|
|
let layer4Y = window.pageYOffset / 2;
|
|
layer1.attr("transform", `translate(${contentX}, ${-layer1Y})`);
|
|
layer2.attr("transform", `translate(${contentX}, ${-layer2Y})`);
|
|
layer3.attr("transform", `translate(${contentX}, ${-layer3Y})`);
|
|
layer4.attr("transform", `translate(${contentX}, ${-layer4Y})`);
|
|
// Update transparent overlays over h1
|
|
$(".h1-overlay").remove();
|
|
$(".h1-strip")
|
|
.filter((index, node) => $(node).isInViewport())
|
|
.map((index, node) => {
|
|
let {left, top, right, bottom, x, y, width, height} = node.getBoundingClientRect();
|
|
let style = window.getComputedStyle?getComputedStyle(node, null):node.currentStyle;
|
|
let marginTop = parseInt(style.marginTop) || 0;
|
|
let overlay = document.createElement("div");
|
|
overlay.classList.add("h1-overlay");
|
|
overlay.style.left = 0;
|
|
overlay.style.top = `${window.scrollY+top-marginTop}px`;
|
|
overlay.style.height = `${height+marginTop}px`;
|
|
document.body.appendChild(overlay);
|
|
});
|
|
}
|
|
|
|
function makeStrips(layers) {
|
|
let layerProbs = new Array(layers.length).fill(0).map((_, index) => index / layers.length);
|
|
for (let i = 10; i < 100; i *= 1.05) {
|
|
let index = Math.floor(Math.random() * layers.length);
|
|
let randomLayer = layers[index];
|
|
if (Math.random() > layerProbs[index]) {
|
|
drawLine(-i, 100, 1, 1000 * (Math.random() + 1), randomLayer);
|
|
}
|
|
}
|
|
updateBackground();
|
|
}
|
|
|
|
function toggleTheme() {
|
|
themeBase = themeBase == "light" ? "dark" : "light";
|
|
localStorage.setItem("themeBase", themeBase);
|
|
setTheme(themeBase);
|
|
}
|
|
|
|
function setTheme(themeBase) {
|
|
let oldTheme = themeBase == "light" ? "dark" : "light";
|
|
let href = document.getElementById("css-theme").getAttribute("href").replace(oldTheme, themeBase);
|
|
let css = document.getElementById("css-theme");
|
|
css.setAttribute("href", href);
|
|
}
|
|
|
|
// https://medium.com/talk-like/detecting-if-an-element-is-in-the-viewport-jquery-a6a4405a3ea2
|
|
$.fn.isInViewport = function() {
|
|
var elementTop = $(this).offset().top;
|
|
var elementBottom = elementTop + $(this).outerHeight();
|
|
var viewportTop = $(window).scrollTop();
|
|
var viewportBottom = viewportTop + $(window).height();
|
|
return elementBottom > viewportTop && elementTop < viewportBottom;
|
|
}; |