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   "cell_type": "markdown",
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   "source": [
    "## Dynamically change surface plot data\n",
    "\n",
    "Note that in this case each time the dataset is transferred.\n",
    "(opposite to marching cubes plot)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "from k3d import K3D\n",
    "import numpy as np\n",
    "from ipywidgets import interact, interactive, fixed\n",
    "import ipywidgets as widgets\n",
    "import time\n",
    "plot = K3D()\n",
    "#plot.display()\n",
    "\n",
    "plot += K3D.vectors(\n",
    "   (0,0,0,0,0,0,0,0,0), \n",
    "   (1,0,0,0,1,0,0,0,1), \n",
    "   colors=(0xff0000, 0xff0000, 0x0000ff, 0x0000ff, 0x00ff00, 0x00ff00), \n",
    "   labels=('Axis x', 'Axis y', 'Axis z')\n",
    ")\n",
    "\n",
    "Nx = 264\n",
    "Ny = 264\n",
    "xmin,xmax = -3,3\n",
    "ymin,ymax = 0,3\n",
    "x = np.linspace(xmin,xmax,Nx)\n",
    "y = np.linspace(ymin,ymax,Ny)\n",
    "x,y = np.meshgrid(x,y,indexing='ij')\n",
    "surface =  K3D.surface(np.sin(x**2+y**2),xmin=xmin,xmax=xmax,ymin=ymin,ymax=ymax,\\\n",
    "                       color=np.random.randint(0, 0xFFFFFF, 1)[0])\n",
    "\n",
    "plot += surface\n",
    "plot.camera_auto_fit = False"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "surface.heights = (np.sin(x**2)+np.cos(y**3))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "surface.color=0xff0000"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "@interact(phi=widgets.FloatSlider(value=0.,min=0,max=2*np.pi,step=0.1))\n",
    "def g(phi):\n",
    "    f = np.sin(x**2+y**2-phi)\n",
    "    surface.heights = f"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "plot.display()\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "%time data =  (np.sin(x**2)+np.cos(y**3))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "%time surface.heights = data"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
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