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basic support for bezier curve approximation in 3d

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This commit is contained in:
Val Erastov 2016-12-09 02:34:44 -08:00
parent 56ad328e99
commit a2bf1b0774
1 changed files with 22 additions and 4 deletions
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26
web/app/3d/workbench.js
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@ -1,6 +1,7 @@
import Vector from '../math/vector'
import * as cad_utils from './cad-utils'
import * as math from '../math/math'
import {LUT} from '../math/bezier-cubic'
import {Matrix3, AXIS, ORIGIN} from '../math/l3space'
import {HashTable} from '../utils/hashmap'
import Counters from './counters'
@ -18,6 +19,10 @@ export function readSketchGeom(sketch) {
function genId() {
return _SKETCH_OBJ_COUNTER++;
}
function createData(obj) {
return {_class : obj._class, id : genId()}
}
const RESOLUTION = 20;
const out = {connections : [], loops : []};
if (sketch.layers !== undefined) {
@ -31,13 +36,13 @@ export function readSketchGeom(sketch) {
if (obj._class === 'TCAD.TWO.Segment') {
const segA = new Vector(obj.points[0][1][1], obj.points[0][2][1], 0);
const segB = new Vector(obj.points[1][1][1], obj.points[1][2][1], 0);
out.connections.push(new SketchConnection(segA, segB, {_class : obj._class, id : genId()}));
out.connections.push(new SketchConnection(segA, segB, createData(obj)));
} else if (obj._class === 'TCAD.TWO.Arc') {
const arcA = new Vector(obj.points[0][1][1], obj.points[0][2][1], 0);
const arcB = new Vector(obj.points[1][1][1], obj.points[1][2][1], 0);
const arcCenter = new Vector(obj.points[2][1][1], obj.points[2][2][1], 0);
const approxedArc = approxArc(arcA, arcB, arcCenter, RESOLUTION);
const arcData = {_class : obj._class, id : genId()};
const arcData = createData(obj);
for (let j = 0; j < approxedArc.length - 1; j++) {
out.connections.push(new SketchConnection(approxedArc[j], approxedArc[j+1], arcData));
}
@ -48,14 +53,24 @@ export function readSketchGeom(sketch) {
const b = ReadSketchPoint(obj.b);
const r = obj.r;
const approxedEllArc = approxEllipticalArc(ep1, ep2, a, b, r, RESOLUTION);
const arcData = {_class : obj._class, id : genId()};
const arcData = createData(obj);
for (let j = 0; j < approxedEllArc.length - 1; j++) {
out.connections.push(new SketchConnection(approxedEllArc[j], approxedEllArc[j+1], arcData));
}
} else if (obj._class === 'TCAD.TWO.BezierCurve') {
const a = ReadSketchPoint(obj.a);
const b = ReadSketchPoint(obj.b);
const cp1 = ReadSketchPoint(obj.cp1);
const cp2 = ReadSketchPoint(obj.cp2);
const approxedCurve = approxBezierCurve(a, b, cp1, cp2, RESOLUTION);
const curvedData = createData(obj);
for (let j = 0; j < approxedCurve.length - 1; j++) {
out.connections.push(new SketchConnection(approxedCurve[j], approxedCurve[j+1], curvedData));
}
} else if (obj._class === 'TCAD.TWO.Circle') {
const circleCenter = new Vector(obj.c[1][1], obj.c[2][1], 0);
const approxedCircle = approxCircle(circleCenter, obj.r, RESOLUTION);
const circleData = {_class : obj._class, id : genId()};
const circleData = createData(obj);
const loop = [];
let p, q, n = approxedCircle.length;
for (p = n - 1, q = 0; q < n; p = q++) {
@ -140,6 +155,9 @@ export function approxCircle(c, r, resolution) {
return points;
}
export function approxBezierCurve(a, b, cp1, cp2, resolution) {
return LUT(a, b, cp1, cp2, 1);
}
export function getSketchedPolygons3D(app, face) {