{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Oscillator Sketch1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "%matplotlib widget"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "\"\"\"Draw mechanical vibration system.\"\"\"\n",
    "\n",
    "from pysketcher import *\n",
    "\n",
    "L = 12.\n",
    "H = L/6\n",
    "W = L/6\n",
    "\n",
    "xmax = L\n",
    "drawing_tool.set_coordinate_system(xmin=-L, xmax=xmax,\n",
    "                                   ymin=-1, ymax=L+H,\n",
    "                                   axis=False,\n",
    "                                   instruction_file='tmp_mpl.py')\n",
    "x = 0\n",
    "drawing_tool.set_linecolor('black')\n",
    "\n",
    "def make_dashpot(x):\n",
    "    d_start = (-L,2*H)\n",
    "    d = Dashpot(start=d_start, total_length=L+x, width=W,\n",
    "                bar_length=3*H/2, dashpot_length=L/2, piston_pos=H+x)\n",
    "    d.rotate(-90, d_start)\n",
    "    return d\n",
    "\n",
    "def make_spring(x):\n",
    "    s_start = (-L,4*H)\n",
    "    s = Spring(start=s_start, length=L+x, bar_length=3*H/2, teeth=True)\n",
    "    s.rotate(-90, s_start)\n",
    "    return s\n",
    "\n",
    "d = make_dashpot(0)\n",
    "s = make_spring(0)\n",
    "\n",
    "M = Rectangle((0,H), 4*H, 4*H).set_linewidth(4)\n",
    "left_wall = Rectangle((-L,0),H/10,L).set_filled_curves(pattern='/')\n",
    "ground = Wall(x=[-L/2,L], y=[0,0], thickness=-H/10)\n",
    "wheel1 = Circle((H,H/2), H/2)\n",
    "wheel2 = wheel1.copy()\n",
    "wheel2.translate(point(2*H, 0))\n",
    "\n",
    "fontsize = 18\n",
    "text_m = Text('$m$', (2*H, H+2*H), fontsize=fontsize)\n",
    "text_ku = Text('$ku$', (-L/2, H+4*H), fontsize=fontsize)\n",
    "text_bv = Text(\"$bu'$\", (-L/2, H), fontsize=fontsize)\n",
    "x_axis = Axis((2*H, L), H, '$u(t)$', fontsize=fontsize,\n",
    "              label_spacing=(0.04, -0.01))\n",
    "x_axis_start = Line((2*H, L-H/4), (2*H, L+H/4)).set_linewidth(4)\n",
    "\n",
    "fig = Composition({\n",
    "    'spring': s, 'mass': M, 'left wall': left_wall,\n",
    "    'ground': ground, 'wheel1': wheel1, 'wheel2': wheel2,\n",
    "    'text_m': text_m, 'text_ku': text_ku,\n",
    "    'x_axis': x_axis, 'x_axis_start': x_axis_start})\n",
    "\n",
    "fig.draw()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "application/vnd.jupyter.widget-view+json": {
       "model_id": "5b6519e875354bbf82e2356bcf09d158",
       "version_major": 2,
       "version_minor": 0
      },
      "text/plain": [
       "Canvas(toolbar=Toolbar(toolitems=[('Home', 'Reset original view', 'home', 'home'), ('Back', 'Back to previous …"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "drawing_tool.mpl.gcf().canvas"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
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