task done

2026-03-20 18:16:40 +10:00
parent 718fbbc0ef
commit 8d1aeb7f5c
3 changed files with 59 additions and 0 deletions
--- a/labs/lab3/task/d3.v7.min.js
+++ b/labs/lab3/task/d3.v7.min.js
--- a/labs/lab3/task/index.html
+++ b/labs/lab3/task/index.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html lang="ru<head>
+    <meta charset=" utf-8">
+<script src="d3.v7.min.js"> </script>
+<script src="main.js"></script>
+</head>
+
+<body>
+    <svg></svg>
+</body>
+
+</html>
--- a/labs/lab3/task/main.js
+++ b/labs/lab3/task/main.js
@@ -0,0 +1,45 @@
+document.addEventListener("DOMContentLoaded", function () {
+    svg = d3.select("svg")
+        .attr("width", 2000)
+        .attr("height", 2000);
+    let w = parseFloat(svg.style('width'));
+    let h = parseFloat(svg.style('height'));
+    let r = d3.min([w, h]) * 0.1
+
+
+    const getEntry = () => {
+        return {
+            "x": d3.randomUniform(w)(),
+            "y": d3.randomUniform(h)(),
+            "r": d3.randomUniform(r)(),
+            "color": getRandColor()
+        }
+    }
+
+    let data = [];
+    for (let i = 0; i < 10; i++) {
+        data.push(getEntry());
+    }
+
+    svg.selectAll(".dot").data(data)
+        .enter()
+        .append("circle")
+        .attr("r", d => d.r)
+        .attr("cx", d => d.x)
+        .attr("cy", d => d.y)
+        .style("fill", d => d.color)
+        .attr("opacity", 1)
+        .transition()
+        .duration(2000)
+        .ease(d3.easeLinear)
+        .attr("r", d => d.r * 3)
+        .attr("opacity", 0)
+        .on("end",() => {
+            svg.attr("style", `background :${getRandColor()}`);
+        });
+
+})
+
+const getRandColor = () => {
+    return `rgb(${d3.randomInt(255)()},${d3.randomInt(255)()},${d3.randomInt(255)()})`
+}