commit 657e93b6b4b9d0440966bbeea7a39c999af9d84f
Author: A.M. Rowsell <amrowsell@frozenelectronics.ca>
Date:   Sun Jun 27 13:48:32 2021 -0400

    Initial commit -- non-working
    
    Still need to get the GTK framework in place. But it's always
    a good idea to start the git repo before getting too far into
    a project!

diff --git a/spirographs.py b/spirographs.py
new file mode 100644
index 0000000..18d6c75
--- /dev/null
+++ b/spirographs.py
@@ -0,0 +1,60 @@
+# gtk imports
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk, Gdk, GObject, GLib
+
+# math/plot imports
+import numpy as np
+import matplotlib.pyplot as plt
+import math
+import sys
+
+class spirographs:
+
+
+    def calcEpiX(theta, bigRadius, smallRadius, distance):
+        return ((bigRadius + smallRadius) * math.cos(theta)) - (distance * math.cos(((bigRadius + smallRadius)/(smallRadius))*theta))
+
+    def calcEpiY(theta, bigRadius, smallRadius, distance):
+        return ((bigRadius + smallRadius) * math.sin(theta)) - (distance * math.sin(((bigRadius + smallRadius)/(smallRadius))*theta))
+
+    def calcHypoX(theta, bigRadius, smallRadius, distance):
+        return ((bigRadius - smallRadius) * math.cos(theta)) + (distance * math.cos(((bigRadius - smallRadius)/(smallRadius))*theta))
+
+    def calcHypoY(theta, bigRadius, smallRadius, distance):
+        return ((bigRadius - smallRadius) * math.sin(theta)) - (distance * math.sin(((bigRadius - smallRadius)/(smallRadius))*theta))
+
+    def __init__(self):
+        self.bigRadius = 12
+        self.smallRadius = 5
+        self.distance = 4
+        self.highestTheta = (np.lcm(smallRadius, bigRadius)/bigRadius) * 2 * math.pi
+        self.stepSize = highestTheta / 4096
+        self.recalcPoints()
+        self.showPlot()
+
+    def recalcPoints(self):
+        self.epiX = np.array([calcEpiX(i, bigRadius, smallRadius, distance) for i in np.arange(0, highestTheta, stepSize)])
+        self.epiY = np.array([calcEpiY(i, bigRadius, smallRadius, distance) for i in np.arange(0, highestTheta, stepSize)])
+        self.hypoX = np.array([calcHypoX(i, bigRadius, smallRadius, distance) for i in np.arange(0, highestTheta, stepSize)])
+        self.hypoY = np.array([calcHypoY(i, bigRadius, smallRadius, distance) for i in np.arange(0, highestTheta, stepSize)])
+
+    def showPlot(self):
+        plt.subplot(1, 2, 1)
+        plt.title(f"Epichondroid of {bigRadius}, {smallRadius}, {distance}")
+        plt.plot(epiX, epiY)
+        plt.subplot(1, 2, 2)
+        plt.title(f"Hypochondroid of {bigRadius}, {smallRadius}, {distance}")
+        plt.plot(hypoX, hypoY)
+        plt.show()
+
+
+builder = Gtk.Builder()
+builder.add_from_file("spirographs.glade")
+sp = spirographs()
+builder.connect_signals(sp)
+window = builder.get_object("spWindow")
+window.show_all()
+
+Gtk.main()
+