floormap.js

const numfont = [24, 36, 44, 36, 52, 36, 24, 0, 8, 24, 8, 8, 8, 8, 8, 0, 24, 36,
  36, 8, 16, 32, 60, 0, 60, 4, 24, 4, 36, 36, 24, 0, 8, 24, 24, 40, 40, 60, 8, 0,
  60, 32, 56, 4, 36, 36, 24, 0, 8, 16, 24, 36, 36, 36, 24, 0, 60, 4, 8, 8, 8, 16, 16,
  0, 24, 36, 36, 24, 36, 36, 24, 0, 24, 36, 36, 36, 24, 8, 16
]

async function write_text_num(image, x, y, txt) {
  for (let d = 0; d < txt.length; d++) {

    let charcode = txt[d].charCodeAt(0);
    if (charcode >= 48 && charcode <= 57) {
      let font_offset = (charcode - 48) * 8;
      for (let row = 0; row < 8; row++) {
        let fontline = numfont[font_offset + row];
        for (let col = 0; col < 8; col++) {
          if (fontline & (128 >> col)) {
            await image.updateOne({
              x: x + (d * 6) + col,
              y: y + row
            }, {
              $set: {
                c: 1
              }
})}}}}}}


async function fillrect(image, x, y, x2, y2, c) {
  await image.updateMany({
    x: { $gte: x, $lte: x2 },
    y: { $gte: y, $lte: y2 }}
  }, {    $set: { c }  });
}


async function rect(image, x, y, x2, y2, c) {
  await image.updateMany({
    x: x,
    y: { $gte: y, $lte: y2 }
  }, { $set: { c } });
  await image.updateMany({
    x: x2,
    y: { $gte: y, $lte: y2 }
  }, { $set: { c } });
  await image.updateMany({
    x: { $gte: x, $lte: x2 },
    y: y
  }, { $set: { c } });
  await image.updateMany({
    x: { $gte: x, $lte: x2 },
    y: y2
  }, { $set: { c } });
}


exports = async function(arg) {

  const image = context.services.get("mongodb-atlas").db("energy").collection("image");
  const tempcol = context.services.get("mongodb-atlas").db("energy").collection("roomtemps");


  let recs = [];
  const iw = 160;
  const ih = 120;
  for (x = 0; x < iw; x++) {
    for (y = 0; y < ih; y++) {
      recs.push({ x, y, c: null });
    }
  }
  await image.deleteMany({})
  await image.insertMany(recs)



  //Sizes as percent

  const rooms = {
    GamesRoom: [80, 20, 100, 100],
    Study: [60, 60, 80, 100],
    Hallway: [60, 20, 80, 60],
    LivingRoom: [1, 40, 60, 100],
    cloakroom: [75, 20, 80, 40],
    office2: [40, 1, 60, 40],
    Utility: [20, 1, 40, 40]
  };
  const vmul = ih / 100;
  const hmul = iw / 100;


  await image.updateOne({ x: iw - 1, y: ih - 1 }, {
    $set: { c: 32 }
  }); //Upper Bound Colour and Size

  for (var room in rooms) {
    dimensions = rooms[room];
    const scaled = dimensions.map((d, ix) => Math.floor(d * ([hmul, vmul][ix % 2])) - 1);
    const curtemp = tempcol.find({ location: room }).sort({ _id: -1 }).limit(1).toArray();
    let temp = null;
    if (curtemp.length == 1) {
      temp = curtemp[0].temp;
    }
    console.log(`${room} ${temp}`);
    await fillrect(image, ...scaled, temp);
    await rect(image, ...scaled, 1);
    await write_text_num(image, scaled[0] + 4, scaled[1] + 4, `${temp}`);
  }

};