Issues converting PLY file

[satyajitghana]

Initially i tried to convert the ply file using

node convert2xkt.js -s scanwall220.ply -o scanwall220.ply.xkt -l                                                  ─╯
[convert2xkt] Reading input file: scanwall220.ply
[convert2xkt] Input file size: 3919.92 kB
[convert2xkt] Converting...
Error: TypeError: Cannot read property 'COLOR_0' of undefined

but COLOR_0 IS defined

this is the output after parsing using @loaders.gl/ply

{
  loaderData: {
    header: {
      comments: [Array],
      elements: [Array],
      headerLength: 265,
      format: 'binary_little_endian',
      version: '1.0'
    }
  },
  header: { vertexCount: 76856, boundingBox: [ [Array], [Array] ] },
  mode: 0,
  attributes: {
    POSITION: { value: [Float32Array], size: 3 },
    NORMAL: { value: [Float32Array], size: 3 },
    COLOR_0: { value: [Uint8Array], size: 3, normalized: true }
  }
}

---

So i tried to write the script to convert to XKT myself:

This is the code i am using to convert to XKT file

import { parse } from '@loaders.gl/core';
import { PLYLoader } from '@loaders.gl/ply';
import { XKTModel } from './src/XKTModel/XKTModel.js';

import fs from 'fs';

const metaModelFileData = fs.readFileSync('scanwall220.ply');

const parsedData = await parse(metaModelFileData, PLYLoader)

console.log(parsedData)

const attributes = parsedData.attributes;
const colorsValue = attributes.COLOR_0.value;
const colorsCompressed = [];

for (let i = 0, len = colorsValue.length; i < len; i += 4) {
    colorsCompressed.push(colorsValue[i]);
    colorsCompressed.push(colorsValue[i + 1]);
    colorsCompressed.push(colorsValue[i + 2]);
}

const xktModel = new XKTModel();

xktModel.createGeometry({
    geometryId: "plyGeometry",
    primitiveType: "triangles",
    positions: attributes.POSITION.value,
    colorsCompressed: colorsCompressed
});

which throws the error

internal/process/esm_loader.js:74
    internalBinding('errors').triggerUncaughtException(
                              ^
Parameter expected for 'triangles' primitive: params.indices
Thrown at:
    at loadESM (internal/process/esm_loader.js:74:31)