{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import k3d\n",
    "import numpy as np\n",
    "import time "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "phi = np.linspace(0,10*2*np.pi,1000,dtype=np.float32)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "x = np.cos(phi)\n",
    "y = np.sin(phi)\n",
    "z = 0.1*phi\n",
    "xyz = np.vstack([x,y,z]).T"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "plot = k3d.plot()\n",
    "plt_line = k3d.line(xyz,shader='mesh')\n",
    "plot += plt_line\n",
    "plot"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "time.sleep(1)\n",
    "plot.camera_auto_fit = False\n",
    "plot.grid_auto_fit = False"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "spiral = lambda a: np.vstack([np.cos(phi),np.sin(phi),a*phi]).T"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "plt_line.vertices = spiral(0.1)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "plt_line.vertices = {str(t/10):spiral(0.05+0.05*np.sin(alfa)) \n",
    "                     for t,alfa in enumerate(np.linspace(0.0,2*np.pi,20))}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "plot.time=.3"
   ]
  }
 ],
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   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
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