{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Parametric"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<Figure size 640x480 with 3 Axes>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "import numpy as np\n",
    "import matplotlib.pyplot as plt\n",
    "from matplotlib.animation import PillowWriter\n",
    "import animatplot as amp\n",
    "\n",
    "\n",
    "def psi(t):\n",
    "    x = t\n",
    "    y = np.sin(t)\n",
    "    return x, y\n",
    "\n",
    "\n",
    "t = np.linspace(0, 2 * np.pi, 25)\n",
    "x, y = psi(t)\n",
    "X, Y = amp.util.parametric_line(x, y)\n",
    "\n",
    "timeline = amp.Timeline(t, \"s\", 24)\n",
    "\n",
    "ax = plt.axes(xlim=[0, 7], ylim=[-1.1, 1.1])\n",
    "block1 = amp.blocks.Line(X, Y, ax=ax)\n",
    "# or equivalently\n",
    "# block1 = amp.blocks.ParametricLine(x, y, ax=ax)\n",
    "\n",
    "anim = amp.Animation([block1], timeline)\n",
    "\n",
    "# Your standard matplotlib stuff\n",
    "plt.title(\"Parametric Line\")\n",
    "plt.xlabel(\"x\")\n",
    "plt.ylabel(r\"y\")\n",
    "\n",
    "# Create Interactive Elements\n",
    "anim.toggle()\n",
    "anim.timeline_slider()\n",
    "\n",
    "anim.save(\"parametric.gif\", writer=PillowWriter(fps=5))\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "raw",
   "metadata": {
    "raw_mimetype": "text/restructuredtext"
   },
   "source": [
    ".. image:: parametric.gif"
   ]
  }
 ],
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