pixi.js/lib/rendering/renderers/shared/geometry/utils/ensureIsBuffer.js

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'use strict';

var Buffer = require('../../buffer/Buffer.js');
var _const = require('../../buffer/const.js');

"use strict";
function ensureIsBuffer(buffer, index) {
  if (!(buffer instanceof Buffer.Buffer)) {
    let usage = index ? _const.BufferUsage.INDEX : _const.BufferUsage.VERTEX;
    if (buffer instanceof Array) {
      if (index) {
        buffer = new Uint32Array(buffer);
        usage = _const.BufferUsage.INDEX | _const.BufferUsage.COPY_DST;
      } else {
        buffer = new Float32Array(buffer);
        usage = _const.BufferUsage.VERTEX | _const.BufferUsage.COPY_DST;
      }
    }
    buffer = new Buffer.Buffer({
      data: buffer,
      label: index ? "index-mesh-buffer" : "vertex-mesh-buffer",
      usage
    });
  }
  return buffer;
}

exports.ensureIsBuffer = ensureIsBuffer;
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