{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import k3d\n",
    "from math import sin, cos, pi\n",
    "\n",
    "width = height = 50\n",
    "model_matrix = [\n",
    "    7.0,  5.0, -5.0, 0.0,\n",
    "    0.0,  7.0,  7.0, 5.0,\n",
    "    7.0, -5.0,  5.0, 0.0,\n",
    "    0.0,  0.0,  0.0, 1.0\n",
    "]\n",
    "\n",
    "def f(x, y):\n",
    "    return sin(float(x) / width * pi * 2.0), cos(float(y) / height * pi * 2.0)\n",
    "\n",
    "colors = (0xFF0000, 0x00FF00) * width * height\n",
    "vectors = [[f(x, y) for x in range(width)] for y in range(height)]\n",
    "\n",
    "plot = k3d.plot()\n",
    "plot += k3d.vector_field(vectors, colors, model_matrix=model_matrix)\n",
    "plot.display()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "plot.objects[0].head_size = 1.5"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "plot.objects[0].scale = 2.0"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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   "file_extension": ".py",
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