# modeling/src/geometries/geom2/toCompactBinary.js

``````/**
* Produces a compact binary representation from the given geometry.
* @param {geom2} geometry - the geometry
* @returns {TypedArray} compact binary representation
* @alias module:modeling/geometries/geom2.toCompactBinary
*/
const toCompactBinary = (geometry) => {
const sides = geometry.sides
const transforms = geometry.transforms
let color = [-1, -1, -1, -1]
if (geometry.color) color = geometry.color

// FIXME why Float32Array?
const compacted = new Float32Array(1 + 16 + 4 + (sides.length * 4)) // type + transforms + color + sides data

compacted[0] = 0 // type code: 0 => geom2, 1 => geom3 , 2 => path2

compacted[1] = transforms[0]
compacted[2] = transforms[1]
compacted[3] = transforms[2]
compacted[4] = transforms[3]
compacted[5] = transforms[4]
compacted[6] = transforms[5]
compacted[7] = transforms[6]
compacted[8] = transforms[7]
compacted[9] = transforms[8]
compacted[10] = transforms[9]
compacted[11] = transforms[10]
compacted[12] = transforms[11]
compacted[13] = transforms[12]
compacted[14] = transforms[13]
compacted[15] = transforms[14]
compacted[16] = transforms[15]

compacted[17] = color[0]
compacted[18] = color[1]
compacted[19] = color[2]
compacted[20] = color[3]

for (let i = 0; i < sides.length; i++) {
const ci = i * 4 + 21
const point0 = sides[i][0]
const point1 = sides[i][1]
compacted[ci + 0] = point0[0]
compacted[ci + 1] = point0[1]
compacted[ci + 2] = point1[0]
compacted[ci + 3] = point1[1]
}
// TODO: how about custom properties or fields ?
return compacted
}

module.exports = toCompactBinary
``````