examples/needle.ipynb

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   "cell_type": "code",
   "execution_count": null,
   "id": "63f1d19d-48ee-499a-b2c3-dea19dbae0c3",
   "metadata": {},
   "outputs": [],
   "source": [
    "import random\n",
    "\n",
    "from frontend import App\n",
    "\n",
    "app = App.create(\"needle\")\n",
    "\n",
    "V, F = app.mesh.square(res=129)\n",
    "app.asset.add.tri(\"sheet\", V, F)\n",
    "\n",
    "V, F = app.mesh.cone(height=5, Nr=40, Ny=64, Nb=12, radius=1, sharpen=2)\n",
    "app.asset.add.tri(\"cone\", V, F)\n",
    "\n",
    "V, F, T = app.mesh.icosphere(r=0.25, subdiv_count=4).tetrahedralize()\n",
    "app.asset.add.tet(\"sphere\", V, F, T)\n",
    "\n",
    "scene = app.scene.create(\"needle-sphere\")\n",
    "scene.add(\"cone\").scale(0.2).rotate(90, \"x\").pin()\n",
    "scene.add(\"sphere\").at(0, 1.25, 0).pin().pull().hold(1.0).unpin()\n",
    "\n",
    "n, space = 5, 0.05\n",
    "for i in range(n):\n",
    "    y = (i + 1) * space + 0.25\n",
    "    deg = i * 90 / n\n",
    "    obj = scene.add(\"sheet\").direction([1, 0, 0], [0, 1, 0])\n",
    "    obj.at(0, y, 0).rotate(90, \"x\").rotate(deg + 5 * random.random(), \"y\")\n",
    "\n",
    "fixed = scene.build().report()\n",
    "fixed.preview()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "7f0edf6e-76dd-44f5-8800-984784957f07",
   "metadata": {},
   "outputs": [],
   "source": [
    "session = app.session.create(fixed)\n",
    "param = app.session.param()\n",
    "param.set(\"frames\", 120)\n",
    "param.set(\"area-density\", 1e3).set(\"volume-density\", 1e5)\n",
    "\n",
    "session.start(param).preview()\n",
    "session.stream()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "495397b1-1cb4-45b1-af4d-eb56b44e415b",
   "metadata": {},
   "outputs": [],
   "source": [
    "# run this cell after sufficnt frames are simulated\n",
    "session.animate()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "9fee8e48-5783-4e2a-bc49-4069a3a45e80",
   "metadata": {},
   "outputs": [],
   "source": [
    "# this is for CI\n",
    "assert session.finished()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "f53f2f7a-f8e3-4e47-b643-9b3b27c551b6",
   "metadata": {},
   "outputs": [],
   "source": [
    "# export all simulated frames and make a zip file\n",
    "if not app.CI:\n",
    "    session.export.animation(f\"export/{scene.info.name}/{session.info.name}\").zip()"
   ]
  }
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