From be06edbcfd1213ea1658d36f8934493a92205aac Mon Sep 17 00:00:00 2001
From: pommicket <leonardomtenenbaum@gmail.com>
Date: Fri, 1 Jul 2016 17:43:58 -0400
Subject: Created pommicket.github.io

---
 js/modularcircles.js | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 js/modularcircles.js

(limited to 'js/modularcircles.js')

diff --git a/js/modularcircles.js b/js/modularcircles.js
new file mode 100644
index 0000000..8b588f9
--- /dev/null
+++ b/js/modularcircles.js
@@ -0,0 +1,54 @@
+function setup()
+{
+	createCanvas(600, 600);
+}
+
+function nPoints()
+{
+	return document.getElementById("npoints").value;
+}
+
+function shouldMul()
+{
+	return document.getElementById("should_mul").checked;
+}
+
+function amount()
+{
+	return parseFloat(document.getElementById("amount").value);
+}
+
+function getPos(number)
+{
+	angle = 2*PI * number/(nPoints()); 
+	return [cos(angle)*250+300, sin(angle)*250+300];
+}
+
+function draw()
+{
+	if (shouldMul())
+		document.getElementById("amount").step = 0.1;
+	else
+		document.getElementById("amount").step = 1;
+	background(255);
+	ellipseMode(CENTER);
+	noStroke();
+	fill(0);
+	for (var i = 0; i < nPoints(); i++)
+		ellipse(getPos(i)[0], getPos(i)[1], 3, 3);
+	
+	stroke(0);
+	for (var i = 0; i < nPoints(); i++)
+	{
+		if (shouldMul())
+		{
+			stroke(map(map((amount()*i)%nPoints(), 0, nPoints(), 0, 256) - map(i, 0, nPoints(), 0, 256), -256, 256, 0, 256), map(i, 0, nPoints(), 0, 256), map((amount()*i)%nPoints(), 0, nPoints(), 0, 256));
+			line(getPos(i)[0], getPos(i)[1], getPos((amount()*i)%nPoints())[0], getPos((amount()*i)%nPoints())[1]); 
+		}
+		else
+		{
+			stroke(0, map(i, 0, nPoints(), 0, 256), map((amount()+i)%nPoints(), 0, nPoints(), 0, 256));
+			line(getPos(i)[0], getPos(i)[1], getPos((amount()+i)%nPoints())[0], getPos((amount()+i)%nPoints())[1]);
+		}
+	}
+}
\ No newline at end of file
-- 
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