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implement new combing

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This commit is contained in:
Casper Lamboo 2018-05-02 15:12:45 +02:00
parent 79e4acd3d1
commit 6c8b8e9d44
6 changed files with 247 additions and 146 deletions
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61
package-lock.json generated
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@ -90,6 +90,9 @@
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@ -3229,6 +3232,11 @@
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@ -7266,9 +7274,9 @@
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@ -8254,9 +8262,9 @@
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@ -9344,14 +9352,14 @@
"github-from-package": "0.0.0",
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"mkdirp": "0.5.1",
"node-abi": "2.3.0",
"node-abi": "2.4.0",
"noop-logger": "0.1.1",
"npmlog": "4.1.2",
"os-homedir": "1.0.2",
"pump": "2.0.1",
"rc": "1.2.6",
"simple-get": "2.7.0",
"tar-fs": "1.16.0",
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"tunnel-agent": "0.6.0",
"which-pm-runs": "1.0.0"
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@ -9748,8 +9756,8 @@
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"lodash": "4.17.5",
"lodash-es": "4.17.8",
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"loose-envify": "1.3.1",
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@ -9760,9 +9768,9 @@
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@ -9921,8 +9929,8 @@
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"prop-types": "15.6.1"
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"dependencies": {
@ -9940,9 +9948,9 @@
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@ -10462,9 +10470,9 @@
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"requires": {
"decompress-response": "3.3.0",
"once": "1.4.0",
@ -10906,9 +10914,9 @@
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@ -10999,9 +11007,6 @@
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"version": "2.3.8",
"resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",

1
package.json
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@ -23,6 +23,7 @@
"@doodle3d/doodle3d-api": "^1.0.5",
"@doodle3d/doodle3d-core": "github:doodle3d/doodle3d-core",
"babel-plugin-transform-class-properties": "^6.24.1",
"earcut": "^2.1.3",
"file-saver": "^1.3.3",
"lodash": "^4.17.4",
"material-ui": "^0.19.4",

8
src/sliceActions/helpers/GCode.js
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@ -1,5 +1,5 @@
import { scale, distanceTo } from './vector2.js';
import { PRECISION, VERSION } from '../../constants.js';
import { distanceTo } from './vector2.js';
import { VERSION } from '../../constants.js';
export const MOVE = 'G';
export const M_COMMAND = 'M';
@ -55,7 +55,7 @@ export default class GCode {
}
moveTo(x, y, z, { speed }) {
const newNozzlePosition = scale({ x, y }, PRECISION);
const newNozzlePosition = { x, y };
const lineLength = distanceTo(this._nozzlePosition, newNozzlePosition);
this._duration += lineLength / speed;
@ -74,7 +74,7 @@ export default class GCode {
}
lineTo(x, y, z, { speed, flowRate }) {
const newNozzlePosition = scale({ x, y }, PRECISION);
const newNozzlePosition = { x, y };
const lineLength = distanceTo(this._nozzlePosition, newNozzlePosition);
this._extruder += this._nozzleToFilamentRatio * lineLength * flowRate;

312
src/sliceActions/helpers/comb.js
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@ -1,131 +1,225 @@
import Shape from 'clipper-js';
import { subtract, add, scale, normalize, dot, length, distanceTo } from './vector2.js';
import { PRECISION } from '../../constants.js';
import { subtract, add, normalize, dot, distanceTo, divide, normal } from './vector2.js';
import earcut from 'earcut';
const TOLERANCE = 1 / PRECISION;
// const TRIANGULATED_OUTLINES = new WeakMap();
export default function comb(outline, start, end) {
if (distanceTo(start, end) < TOLERANCE) {
return [start, end];
if (distanceTo(start, end) < 10) return [start, end];
// if (!TRIANGULATED_OUTLINES.has(outline)) TRIANGULATED_OUTLINES.set(outline, decompose(outline));
// const { convexPolygons, vertices } = TRIANGULATED_OUTLINES.get(outline);
const { convexPolygons, vertices } = decompose(outline);
const startPolygon = convexPolygons.findIndex(({ face }) => pointIsInsideConvex(start, face, vertices));
const endPolygon = convexPolygons.findIndex(({ face }) => pointIsInsideConvex(end, face, vertices));
if (startPolygon === -1 || endPolygon === -1) return [start, end];
if (startPolygon === endPolygon) return [start, end];
const path = findClosestPath(convexPolygons, startPolygon, endPolygon);
if (!path) return [start, end];
const line = containLineInPath(path, start, end, vertices);
return line;
}
function lineIntersection(a1, a2, b1, b2) {
// source: http://mathworld.wolfram.com/Line-LineIntersection.html
const intersection = {
x: ((a1.x * a2.y - a1.y * a2.x) * (b1.x - b2.x) - (a1.x - a2.x) * (b1.x * b2.y - b1.y * b2.x)) / ((a1.x - a2.x) * (b1.y - b2.y) - (a1.y - a2.y) * (b1.x - b2.x)),
y: ((a1.x * a2.y - a1.y * a2.x) * (b1.y - b2.y) - (a1.y - a2.y) * (b1.x * b2.y - b1.y * b2.x)) / ((a1.x - a2.x) * (b1.y - b2.y) - (a1.y - a2.y) * (b1.x - b2.x))
};
const intersectionA = subtract(intersection, a1);
const directionA = subtract(a2, a1);
const normalA = normalize(directionA);
const distanceA = dot(normalA, intersectionA);
if (distanceA < 0 || distanceA > dot(normalA, directionA)) return false;
const intersectionB = subtract(intersection, b1);
const directionB = subtract(b2, b1);
const normalB = normalize(directionB);
const distanceB = dot(normalB, intersectionB);
if (distanceB < 0 || distanceB > dot(normalB, directionB)) return false;
return intersection;
}
function pointIsInsideConvex(point, convex, vertices) {
for (let i = 0; i < convex.length; i ++) {
const vertexA = vertices[convex[i]];
const vertexB = vertices[convex[(i + 1) % convex.length]];
const n = normalize(normal(subtract(vertexB, vertexA)));
const p = subtract(point, vertexA);
if (dot(p, n) < 0) return false;
}
return true;
}
function decompose(polygon) {
const vertices = polygon.reduce((points, path) => {
points.push(...path);
return points;
}, []);
const flatVertices = vertices.reduce((points, { x, y }) => {
points.push(x, y);
return points;
}, []);
let offset = 0;
const holes = polygon
.map(path => offset += path.length)
.slice(0, -1);
const flatTrainglesIndexed = earcut(flatVertices, holes);
const convexPolygons = [];
for (let i = 0; i < flatTrainglesIndexed.length; i += 3) {
const face = [
flatTrainglesIndexed[i],
flatTrainglesIndexed[i + 1],
flatTrainglesIndexed[i + 2]
];
const center = divide(face.reduce((total, point) => {
if (!total) {
return vertices[point];
} else {
return add(total, vertices[point]);
}
}, null), face.length);
convexPolygons.push({
center,
face,
connects: []
});
}
let combPath = new Shape([[start, end]], false, true, false);
for (let i = 0; i < convexPolygons.length; i ++) {
for (let j = i + 1; j < convexPolygons.length; j ++) {
const triangleIndexedA = convexPolygons[i];
const triangleIndexedB = convexPolygons[j];
for (let i = 0; i < outline.paths.length; i ++) {
let outlinePart = new Shape([outline.paths[i]], true, false, false, true);
const overlap = [];
triangleIndexedA.face.map(index => {
if (triangleIndexedB.face.includes(index)) overlap.push(index);
});
let snappedCombPaths = outlinePart.orientation(0) ? combPath.intersect(outlinePart) : combPath.difference(outlinePart);
snappedCombPaths = snappedCombPaths.mapToLower();
outlinePart = outlinePart.mapToLower()[0];
if (distanceTo(start, outlinePart[outlinePart.length - 1]) < distanceTo(start, outlinePart[0])) {
outlinePart = outlinePart.reverse();
if (overlap.length === 2) {
const distance = distanceTo(convexPolygons[i].center, convexPolygons[j].center);
triangleIndexedA.connects.push({ to: j, edge: overlap, distance });
triangleIndexedB.connects.push({ to: i, edge: overlap, distance });
}
}
}
return { vertices, convexPolygons };
}
function findClosestPath(convexPolygons, start, end, visited = [], path = []) {
if (start === end) return [];
visited = [...visited, start];
const { connects } = convexPolygons[start];
const finish = connects.find(({ to }) => to === end);
if (finish) return [...path, finish];
const posibilities = [];
for (const connect of connects) {
if (visited.includes(connect.to)) continue;
const posibility = findClosestPath(convexPolygons, connect.to, end, visited, [...path, connect]);
if (posibility) posibilities.push(posibility);
}
if (posibilities.length === 0) {
return null;
} else if (posibilities.length === 1) {
return posibilities[0];
} else if (posibilities.length > 1) {
const distanceMap = new WeakMap();
for (let i = 0; i < snappedCombPaths.length; i ++) {
const snappedCombPath = snappedCombPaths[i];
const distanceStart = distanceTo(start, snappedCombPath[0]);
const distanceEnd = distanceTo(start, snappedCombPath[snappedCombPath.length - 1]);
if (distanceStart < distanceEnd) {
distanceMap.set(snappedCombPath, distanceStart);
} else {
snappedCombPath.reverse();
distanceMap.set(snappedCombPath, distanceEnd);
}
}
snappedCombPaths.sort((a, b) => distanceMap.get(a) - distanceMap.get(b));
const firstPath = snappedCombPaths[0];
const lastPath = snappedCombPaths[snappedCombPaths.length - 1];
if (snappedCombPaths.length === 0) {
snappedCombPaths.push([start], [end]);
} else if (distanceTo(firstPath[0], start) > 1.0) {
snappedCombPaths.unshift([start]);
} else if (distanceTo(lastPath[lastPath.length - 1], end) > 1.0) {
snappedCombPaths.push([end]);
for (const posibility of posibilities) {
const distance = posibility.reduce((totalDistance, connect) => totalDistance + connect.distance, 0);
distanceMap.set(posibility, distance);
}
if (snappedCombPaths.length === 1) {
continue;
}
const startPath = snappedCombPaths[0];
const startPoint = startPath[startPath.length - 1];
const endPath = snappedCombPaths[snappedCombPaths.length - 1];
const endPoint = endPath[0];
const lineIndexStart = findClosestLineOnPath(outlinePart, startPoint);
const lineIndexEnd = findClosestLineOnPath(outlinePart, endPoint);
const path = [];
if (lineIndexEnd === lineIndexStart) {
continue;
} else if (lineIndexEnd > lineIndexStart) {
if (lineIndexStart + outlinePart.length - lineIndexEnd < lineIndexEnd - lineIndexStart) {
for (let i = lineIndexStart + outlinePart.length; i > lineIndexEnd; i --) {
path.push(outlinePart[i % outlinePart.length]);
}
} else {
for (let i = lineIndexStart; i < lineIndexEnd; i ++) {
path.push(outlinePart[i + 1]);
}
}
} else {
if (lineIndexEnd + outlinePart.length - lineIndexStart < lineIndexStart - lineIndexEnd) {
for (let i = lineIndexStart; i < lineIndexEnd + outlinePart.length; i ++) {
path.push(outlinePart[(i + 1) % outlinePart.length]);
}
} else {
for (let i = lineIndexStart; i > lineIndexEnd; i --) {
path.push(outlinePart[i]);
}
}
}
combPath = new Shape([[...startPath, ...path, ...endPath]], false, true, false, true);
return posibilities.sort((a, b) => distanceMap.get(a) - distanceMap.get(b))[0];
}
return combPath.mapToLower()[0];
}
function findClosestLineOnPath(path, point) {
let distance = Infinity;
let lineIndex;
// const parse = string => parseFloat(string);
// function findClosestPath(map, start, end) {
// // dijkstra's algorithm
// const costs = { [start]: 0 };
// const open = { [0]: [start] };
// const predecessors = {};
//
// while (open) {
// const keys = Object.keys(open).map(parse);
// if (keys.length === 0) break;
// keys.sort();
//
// const [key] = keys;
// const bucket = open[key];
// const node = bucket.shift();
// const currentCost = key;
// const { connects } = map[node];
//
// if (!bucket.length) delete open[key];
//
// for (const { distance, to } of connects) {
// const totalCost = distance + currentCost;
// const vertexCost = costs[to];
//
// if ((typeof vertexCost === 'undefined') || (vertexCost > totalCost)) {
// costs[to] = totalCost;
//
// if (!open[totalCost]) open[totalCost] = [];
// open[totalCost].push(to);
//
// predecessors[to] = node;
// }
// }
// }
//
// if (typeof costs[end] === 'undefined') return null;
//
// const nodes = [];
// let node = end;
// while (typeof node !== 'undefined') {
// nodes.push(node);
// node = predecessors[node];
// }
// nodes.reverse();
//
// const path = [];
// for (let i = 1; i < nodes.length; i ++) {
// const from = nodes[i - 1];
// const to = nodes[i];
//
// const connection = map[from].connects.find(connect => connect.to === to);
// path.push(connection);
// }
//
// return path;
// }
for (let i = 0; i < path.length; i ++) {
const pointA = path[i];
const pointB = path[(i + 1) % path.length];
function containLineInPath(path, start, end, vertices) {
const line = [start];
const tempClosestPoint = findClosestPointOnLine(pointA, pointB, point);
const tempDistance = distanceTo(tempClosestPoint, point);
for (const { edge: [indexA, indexB] } of path) {
const vertexA = vertices[indexA];
const vertexB = vertices[indexB];
if (tempDistance < distance) {
distance = tempDistance;
lineIndex = i;
const intersection = lineIntersection(start, end, vertexA, vertexB);
if (!intersection) {
const lastPoint = line[line.length - 1];
const distanceA = distanceTo(lastPoint, vertexA) + distanceTo(vertexA, end);
const distanceB = distanceTo(lastPoint, vertexB) + distanceTo(vertexB, end);
line.push(distanceA < distanceB ? vertexA : vertexB);
}
}
return lineIndex;
}
function findClosestPointOnLine(a, b, c) {
const b_ = subtract(b, a);
const c_ = subtract(c, a);
const lambda = dot(normalize(b_), c_) / length(b_);
if (lambda >= 1) {
return b;
} else if (lambda > 0) {
return add(a, scale(b_, lambda));
} else {
return a;
}
line.push(end);
return line;
}

4
src/sliceActions/slice.js
View File

@ -11,7 +11,7 @@ import shapesToSlices from './shapesToSlices.js';
import slicesToGCode from './slicesToGCode.js';
import applyPrecision from './applyPrecision.js';
import { hslToRgb } from './helpers/color.js';
// // import removePrecision from './removePrecision.js';
import removePrecision from './removePrecision.js';
export default function slice(settings, geometry, openObjectIndexes, constructLinePreview, onProgress) {
const total = 11;
@ -48,7 +48,7 @@ export default function slice(settings, geometry, openObjectIndexes, constructLi
updateProgress('Optimizing paths');
optimizePaths(slices, settings);
// removePrecision(slices);
removePrecision(slices);
updateProgress('Constructing gcode');
const gcode = slicesToGCode(slices, settings);

7
src/sliceActions/slicesToGCode.js
View File

@ -52,7 +52,7 @@ export default function slicesToGCode(slices, settings) {
const part = slice.parts[i];
if (part.closed) {
const outline = part.shell[0];
const outline = part.shell[0].mapToLower();
for (let i = 0; i < part.shell.length; i ++) {
const shell = part.shell[i];
@ -72,7 +72,8 @@ export default function slicesToGCode(slices, settings) {
}
if (typeof slice.support !== 'undefined') {
pathToGCode(slice.supportOutline, combing, gcode, slice.support, true, true, z, profiles.support);
const supportOutline = slice.supportOutline.mapToLower();
pathToGCode(supportOutline, combing, gcode, slice.support, true, true, z, profiles.support);
}
}
@ -95,7 +96,7 @@ function pathToGCode(outline, combing, gcode, shape, retract, unRetract, z, prof
if (i === 0) {
if (combing) {
const combPath = comb(outline, divide(gcode._nozzlePosition, PRECISION), point);
const combPath = comb(outline, gcode._nozzlePosition, point);
for (let i = 0; i < combPath.length; i ++) {
const combPoint = combPath[i];
gcode.moveTo(combPoint.x, combPoint.y, z, travelProfile);