{
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stderr",
"output_type": "stream",
"text": [
"/Users/sth/dev/rust-polylabel/venv/lib/python2.7/site-packages/matplotlib/__init__.py:913: UserWarning: axes.color_cycle is deprecated and replaced with axes.prop_cycle; please use the latter.\n",
" warnings.warn(self.msg_depr % (key, alt_key))\n"
]
}
],
"source": [
"from matplotlib import pyplot as plt\n",
"from matplotlib.collections import PatchCollection\n",
"from shapely.geometry import LineString, Polygon, Point, box, shape\n",
"from shapely.algorithms.polylabel import polylabel\n",
"from descartes import PolygonPatch\n",
"\n",
"import ast\n",
"\n",
"%matplotlib inline"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {
"collapsed": false
},
"outputs": [],
"source": [
"initial_polygon = Polygon([\n",
" (0.0, 0.0),\n",
" (4.0, 0.0),\n",
" (4.0, 1.0),\n",
" (1.0, 1.0),\n",
" (1.0, 4.0),\n",
" (0.0, 4.0),\n",
" (0.0, 0.0)\n",
"])"
]
},
{
"cell_type": "code",
"execution_count": 25,
"metadata": {
"collapsed": false
},
"outputs": [],
"source": [
"# eval 😱 – but it's safe\n",
"with open('nodes.txt', 'r') as f:\n",
" quad_polygons = [box(*tup) for tup in map(ast.literal_eval, f)]"
]
},
{
"cell_type": "code",
"execution_count": 22,
"metadata": {
"collapsed": false
},
"outputs": [],
"source": [
"save_args = {\n",
" \"format\": \"png\",\n",
" \"bbox_inches\": 'tight',\n",
" \"pad_inches\": 0,\n",
" \"alpha\": True,\n",
" \"transparent\": True,\n",
" \"dpi\": 300\n",
"}"
]
},
{
"cell_type": "code",
"execution_count": 26,
"metadata": {
"collapsed": false
},
"outputs": [
{
"data": {
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"text/plain": [
"<matplotlib.figure.Figure at 0x107caac50>"
]
},
"metadata": {},
"output_type": "display_data"
}
],
"source": [
"fig = plt.figure(1, figsize=(5., 5.), dpi=300)\n",
"ax = fig.add_subplot(121)\n",
"ax.set_aspect('equal')\n",
"ax.get_xaxis().set_visible(False)\n",
"ax.get_yaxis().set_visible(False)\n",
"ax.axis('off')\n",
"ax.set_xlim(-0.15, 4.15)\n",
"ax.set_ylim(-0.15, 4.15)\n",
"\n",
"# add initial polygon\n",
"ax.add_patch(PolygonPatch(initial_polygon, fc='None', ec='#000000', lw=0.5, alpha=1.0, zorder=2))\n",
"# add centroid as dot patch\n",
"ax.add_patch(PolygonPatch(Point(1.3571, 1.3571).buffer(.025), lw=0.25, fc='#ffa500', ec='#000000', zorder=4))\n",
"plt.savefig(\"data/polylabel_000.png\", **save_args)\n",
"\n",
"# build patches as needed\n",
"ppatches = (PolygonPatch(poly, fc='None', ec='#ff0000', alpha=1.0, zorder=3, lw=0.25) for poly in quad_polygons)\n",
"\n",
"# consume consume\n",
"for i in xrange(1, len(quad_polygons) + 1):\n",
" ax.add_patch(ppatches.next())\n",
" plt.savefig(\"data/polylabel_{:03d}.png\".format(i), **save_args)\n",
"\n",
"# add pole of inaccessibility as patch\n",
"ax.add_patch(PolygonPatch(Point(0.5625, 0.5625).buffer(.025), lw=0.25, fc='#00b3b3', ec='#000000', zorder=4))\n",
"\n",
"# save final plot\n",
"plt.savefig(\"data/polylabel_{:03d}.png\".format(i + 1), **save_args)\n",
"plt.show()"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": false
},
"outputs": [],
"source": [
"%%bash\n",
"convert -background white -alpha remove -layers OptimizePlus -set delay 20 -colors 512 -loop 0 -scale 100% data/*.png output.gif\n",
"convert output.gif \\( +clone -set delay 300 \\) +swap +delete output.gif"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 2",
"language": "python",
"name": "python2"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 2
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython2",
"version": "2.7.10"
}
},
"nbformat": 4,
"nbformat_minor": 1
}
