toolDiameter: 0.1, // Tool diameter in millimeters
rapidRate : 1500, // Rapid rate in mm/min (G0 F value) nullish value to disable
feedRate : 500, // Feed rate in mm/min (G1 F value)
rateUnit : 'mm/min', // Rapid/Feed rate unit [mm/min, mm/sec]

beamRange: { min: 0, max: 1 }, // Beam power range (Firmware value)
beamPower: { min: 0, max: 100 }, // Beam power (S value) as percentage of beamRange

milling : false, // EXPERIMENTAL
zSafe : 5, // Safe Z for fast move
zSurface : 0, // Usinable surface (white pixels)
zDepth : -10, // Z depth (black pixels)
passDepth: 1, // Pass depth in millimeters

offsets : { X: 0, Y: 0 }, // Global coordinates offsets
trimLine : true, // Trim trailing white pixels
joinPixel: true, // Join consecutive pixels with same intensity
burnWhite: true, // [true = G1 S0 | false = G0] on inner white pixels
verboseG : false, // Output verbose GCode (print each commands)
diagonal : false, // Go diagonally (increase the distance between points)

precision: { X: 2, Y: 2, S: 4 }, // Number of decimals for each commands

nonBlocking: true, // Use setTimeout to avoid blocking the UI

filters: {
smoothing : 0, // Smoothing the input image ?
brightness : 0, // Image brightness [-255 to +255]
contrast : 0, // Image contrast [-255 to +255]
gamma : 0, // Image gamma correction [0.01 to 7.99]
grayscale : 'none', // Graysale algorithm [average, luma, luma-601, luma-709, luma-240, desaturation, decomposition-[min|max], [red|green|blue]-chanel]
shadesOfGray: 256, // Number of shades of gray [2-256]
invertColor : false // Invert color...
},

onProgress : null, // On progress callbacks
onProgressContext: null, // On progress callback context

onDone : null, // On done callback
onDoneContext: null, // On done callback context

// Create RasterToGcode object
let rasterToGcode = new RasterToGcode(settings)

// Register events callbacks
rasterToGcode.on('progress', function(event) {
console.log('onProgress:', event); // event = { gcode, percent }
})
.on('done', function(event) {
console.log('onDone:', event); // event = { gcode }
});