From b500b6de25ffd37f9c72b909f4f725d65deb4fcd Mon Sep 17 00:00:00 2001
From: Janelle deMent <janelledement@gmail.com>
Date: Fri, 8 Feb 2019 16:42:31 -0400
Subject: [PATCH] Add example of scriptable polar area chart

---
 samples/samples.js            |  3 ++
 samples/scriptable/polar.html | 98 +++++++++++++++++++++++++++++++++++
 2 files changed, 101 insertions(+)
 create mode 100644 samples/scriptable/polar.html
diff --git a/samples/samples.js b/samples/samples.js
index 17065997547..a750b196533 100644
--- a/samples/samples.js
+++ b/samples/samples.js
@@ -187,6 +187,9 @@
 		}, {
 			title: 'Line Chart',
 			path: 'scriptable/line.html'
+		}, {
+			title: 'Polar Area Chart',
+			path: 'scriptable/polar.html'
 		}]
 	}, {
 		title: 'Advanced',
diff --git a/samples/scriptable/polar.html b/samples/scriptable/polar.html
new file mode 100644
index 00000000000..3eb290b8b4e
--- /dev/null
+++ b/samples/scriptable/polar.html
@@ -0,0 +1,98 @@
+<!DOCTYPE html>
+<html lang="en-US">
+<head>
+	<meta charset="utf-8">
+	<meta http-equiv="X-UA-Compatible" content="IE=Edge">
+	<meta name="viewport" content="width=device-width, initial-scale=1">
+	<title>Scriptable > Polar Area | Chart.js sample</title>
+	<link rel="stylesheet" type="text/css" href="../style.css">
+	<script src="../../dist/Chart.min.js"></script>
+	<script src="../utils.js"></script>
+</head>
+<body>
+	<div class="content">
+		<div class="wrapper"><canvas id="chart-0"></canvas></div>
+		<div class="toolbar">
+			<button onclick="randomize()">Randomize</button>
+			<button onclick="addData()">Add Data</button>
+			<button onclick="removeData()">Remove Data</button>
+		</div>
+	</div>
+	<script>
+		var DATA_COUNT = 7;
+
+		var utils = Samples.utils;
+
+		utils.srand(110);
+
+		function colorize(opaque, hover, ctx) {
+			var v = ctx.dataset.data[ctx.dataIndex];
+			var c = v < 35 ? '#D60000'
+				: v < 55 ? '#F46300'
+				: v < 75 ? '#0358B6'
+				: '#44DE28';
+
+			var opacity = hover ? 1 - Math.abs(v / 150) - 0.2 : 1 - Math.abs(v / 150);
+
+			return opaque ? c : utils.transparentize(c, opacity);
+		}
+
+		function hoverColorize(ctx) {
+			return colorize(false, true, ctx);
+		}
+
+		function generateData() {
+			return utils.numbers({
+				count: DATA_COUNT,
+				min: 0,
+				max: 100
+			});
+		}
+
+		var data = {
+			datasets: [{
+				data: generateData(),
+			}]
+		};
+
+		var options = {
+			legend: false,
+			tooltips: false,
+			elements: {
+				arc: {
+					backgroundColor: colorize.bind(null, false, false),
+					hoverBackgroundColor: hoverColorize
+				}
+			}
+		};
+
+		var chart = new Chart('chart-0', {
+			type: 'polarArea',
+			data: data,
+			options: options
+		});
+
+		// eslint-disable-next-line no-unused-vars
+		function randomize() {
+			chart.data.datasets.forEach(function(dataset) {
+				dataset.data = generateData();
+			});
+			chart.update();
+		}
+
+		// eslint-disable-next-line no-unused-vars
+		var addData = function() {
+			var newData = Math.round(Math.random() * 100);
+			chart.data.datasets[0].data.push(newData);
+			chart.update();
+		};
+
+		// eslint-disable-next-line no-unused-vars
+		function removeData() {
+			chart.data.datasets[0].data.pop();
+			chart.update();
+		}
+
+	</script>
+</body>
+</html>
