118 lines
3.5 KiB
JavaScript
118 lines
3.5 KiB
JavaScript
import GCode from './helpers/GCode.js';
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import comb from './helpers/comb.js';
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import { PRECISION } from '../constants.js';
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const PROFILE_TYPES = ['support', 'innerShell', 'outerShell', 'innerInfill', 'outerInfill', 'brim'];
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export default function slicesToGCode(slices, settings) {
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const {
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layerHeight,
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filamentThickness,
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nozzleDiameter,
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travelSpeed,
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retraction,
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travel,
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combing,
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zOffset
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} = settings;
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const filamentSurfaceArea = Math.pow((filamentThickness / 2), 2) * Math.PI;
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const lineSurfaceArea = nozzleDiameter * layerHeight;
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const nozzleToFilamentRatio = lineSurfaceArea / filamentSurfaceArea;
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const gcode = new GCode(nozzleToFilamentRatio);
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const defaultProfile = {
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travelProfile: travel,
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retractionProfile: retraction
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};
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let isFirstLayer = true;
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for (let layer = 0; layer < slices.length; layer ++) {
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const slice = slices[layer];
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const z = layer * layerHeight + zOffset;
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if (layer === 1) {
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gcode.turnFanOn();
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isFirstLayer = false;
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}
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const profiles = PROFILE_TYPES.reduce((profiles, profileType) => {
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profiles[profileType] = {
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...defaultProfile,
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lineProfile: isFirstLayer ? settings.firstLayer : settings[profileType]
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};
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return profiles;
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}, {});
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if (typeof slice.brim !== 'undefined') {
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pathToGCode(null, false, gcode, slice.brim, true, true, z, profiles.brim);
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}
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for (let i = 0; i < slice.parts.length; i ++) {
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const part = slice.parts[i];
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if (part.closed) {
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const outline = part.shell[0];
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for (let i = 0; i < part.shell.length; i ++) {
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const shell = part.shell[i];
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const isOuterShell = i === 0;
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const unRetract = isOuterShell;
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const profile = isOuterShell ? profiles.outerShell : profiles.innerShell;
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pathToGCode(outline, combing && true, gcode, shell, false, unRetract, z, profile);
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}
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pathToGCode(outline, combing && true, gcode, part.outerFill, false, false, z, profiles.outerInfill);
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pathToGCode(outline, combing && true, gcode, part.innerFill, true, false, z, profiles.innerInfill);
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} else {
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const retract = !(slice.parts.length === 1 && typeof slice.support === 'undefined');
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pathToGCode(null, false, gcode, part.shape, retract, retract, z, profiles.outerShell);
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}
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}
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if (typeof slice.support !== 'undefined') {
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pathToGCode(null, false, gcode, slice.support, true, true, z, profiles.support);
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}
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}
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return gcode.getGCode();
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}
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function pathToGCode(outline, combing, gcode, shape, retract, unRetract, z, { lineProfile, travelProfile, retractionProfile }) {
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const { closed } = shape;
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const paths = shape.mapToLower();
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for (let i = 0; i < paths.length; i ++) {
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const line = paths[i];
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const length = closed ? (line.length + 1) : line.length;
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for (let i = 0; i < length; i ++) {
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const point = line[i % line.length];
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if (i === 0) {
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if (combing) {
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const combPath = comb(outline, gcode._nozzlePosition.divideScalar(PRECISION), point);
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for (let i = 0; i < combPath.length; i ++) {
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const combPoint = combPath[i];
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gcode.moveTo(combPoint.x, combPoint.y, z, travelProfile);
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}
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} else {
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gcode.moveTo(point.x, point.y, z, travelProfile);
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}
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if (unRetract) {
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gcode.unRetract(retractionProfile);
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}
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} else {
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gcode.lineTo(point.x, point.y, z, lineProfile);
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}
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}
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}
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if (retract) {
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gcode.retract(retractionProfile);
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}
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}
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