mirror of https://gitee.com/cf-fz/WebCAD.git
ChenX
7 years ago
parent
5704c58c7e
commit
93f404be57
@ -0,0 +1,194 @@
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import { Vector3 } from 'three';
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import { app } from '../ApplicationServices/Application';
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import { Arc } from '../DatabaseServices/Arc';
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import { Curve } from '../DatabaseServices/Curve';
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import { Line } from '../DatabaseServices/Line';
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import { Command } from '../Editor/CommandMachine';
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import { PromptEntityResult, PromptStatus } from '../Editor/PromptResult';
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import { angle, midPoint } from '../Geometry/GeUtils';
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import { Intersect } from '../GraphicsSystem/IntersectWith';
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enum FilletState { Invalid = -1, Normal, Parallel, RadiousInvalid }
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export class CommandFillet implements Command
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{
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async exec()
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{
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//拾取曲线1.
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let enRes = await this.SelectCurve([
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{ msg: "放弃", key: "U" },
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{ msg: "多段线", key: "P" },
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{ msg: "半径", key: "R" },
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{ msg: "修剪", key: "T" },
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{ msg: "多个", key: "M" }]);
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if (!enRes) return;
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let cu1 = enRes.Entity as Curve;
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//拾取曲线2
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let enRes2 = await this.SelectCurve([{ msg: "放弃", key: "U" }, { msg: "半径", key: "R" }], cu1);
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if (!enRes2) return;
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let cu2 = enRes2.Entity as Curve;
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//求交点
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let in_pts = cu1.IntersectWith(cu2, Intersect.ExtendBoth);
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if (in_pts.length === 0) return;
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//裁剪. 尖角化
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let new_cu1 = this.SplitCurve(cu1, in_pts, enRes.Point);
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let new_cu2 = this.SplitCurve(cu2, in_pts, enRes2.Point);
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//偏移
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let off_cu1 = this.OffsetCurve(new_cu1, new_cu2, 3);
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let off_cu2 = this.OffsetCurve(new_cu2, new_cu1, 3);
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//圆心
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let center = off_cu1.IntersectWith(off_cu2, Intersect.ExtendBoth)[0];
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//圆弧点1
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let arcP1 = new_cu1.GetClosestPointTo(center, true);
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if (!new_cu1.PtOnCurve(arcP1))
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{
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app.m_Editor.m_CommandStore.Prompt("半径过大");
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return;
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}
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//圆弧点2
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let arcP2 = new_cu2.GetClosestPointTo(center, true);
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if (!new_cu2.PtOnCurve(arcP2))
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{
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app.m_Editor.m_CommandStore.Prompt("半径过大");
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return;
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}
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//时针校验
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let v1 = arcP1.clone().sub(center);
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let v2 = arcP2.clone().sub(center);
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let [startAngle, endAngle] = [angle(v1), angle(v2)];
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if (v1.cross(v2).z > 0)
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[startAngle, endAngle] = [endAngle, startAngle];
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//绘制圆弧
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let arc = new Arc(center, 3, startAngle, endAngle);
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app.m_Database.ModelSpace.Append(arc);
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//延伸或者裁剪到圆弧点
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this.ExtendPt(new_cu1 as Line, in_pts[0], arcP1);
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this.ExtendPt(new_cu2 as Line, in_pts[0], arcP2);
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cu1.CopyFrom(new_cu1);
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cu2.CopyFrom(new_cu2);
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app.m_Editor.UpdateScreen();
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}
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/**
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* 延伸或者裁剪到指定的圆弧的点.
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*
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* @param {Line} cu
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* @param {Vector3} insP
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* @param {Vector3} newP
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* @memberof CommandFillet
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*/
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ExtendPt(cu: Line, insP: Vector3, newP: Vector3)
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{
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if (cu.StartPoint.distanceToSquared(insP) < 1e-5)
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cu.StartPoint = newP;
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else
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cu.EndPoint = newP;
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}
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/**
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* 切割或者延伸曲线,尖角化
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*
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* @param {Curve} cu 处理的曲线
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* @param {Array<Vector3>} pts 原先的相交点
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* @param {Vector3} pickPoint 鼠标点击点
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* @returns {Curve} 返回新的曲线
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* @memberof CommandFillet
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*/
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SplitCurve(cu: Curve, pts: Array<Vector3>, pickPoint: Vector3): Curve
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{
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let cp = cu.GetClosestPointTo(pickPoint, true);
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let cus = cu.GetSplitCurves(pts.map(p => cu.GetParamAtPoint(p)))
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if (cus.length === 0)
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cus.push(cu.Clone() as Curve);
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else
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{
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for (let cu of cus)
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{
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if (cu.PtOnCurve(cp))
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return cu;
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}
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cus.sort((c1: Curve, c2: Curve) =>
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{
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return c1.GetClosestPointTo(cp, false).distanceTo(cp)
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< c2.GetClosestPointTo(cp, false).distanceTo(cp) ? -1 : 1;
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});
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}
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let newCu = cus[0];
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newCu.Extend(newCu.GetParamAtPoint(pts[0]));//延伸到需要的长度
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return cus[0];
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}
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/**
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* 根据指定曲线(toCu)偏移.
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*
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* @param {Curve} thisCu
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* @param {Curve} toCu
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* @param {number} dis 偏移距离
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* @returns {Curve}
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* @memberof CommandFillet
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*/
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OffsetCurve(thisCu: Curve, toCu: Curve, dis: number): Curve
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{
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let minP = midPoint(toCu.StartPoint, toCu.EndPoint);
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let cp = thisCu.GetClosestPointTo(minP, true);
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let vec = minP.sub(cp).normalize().multiplyScalar(dis);
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let newCu = thisCu.Clone() as Line;
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newCu.StartPoint = thisCu.StartPoint.add(vec);
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newCu.EndPoint = thisCu.EndPoint.add(vec);
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return newCu;
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}
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/**
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* 指定用户选择曲线
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*
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* @param {any} keyword 关键字
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* @param {Curve} [oldCurve] 第一次选择的曲线
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* @returns {Promise<PromptEntityResult>}
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* @memberof CommandFillet
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*/
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async SelectCurve(keyword, oldCurve?: Curve): Promise<PromptEntityResult>
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{
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while (true)
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{
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let enRes = await app.m_Editor.GetEntity({
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Msg: oldCurve ? "选择第二个对象:" : "选择第一个对象:",
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KeyWordList: keyword,
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});
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switch (enRes.Status)
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{
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case PromptStatus.OK:
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if (enRes.Entity === oldCurve)
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{
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app.m_Editor.m_CommandStore.Prompt("重复的对象!");
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}
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else if (enRes.Entity && enRes.Entity instanceof Curve)
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{
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return enRes;
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}
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break;
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case PromptStatus.Cancel:
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return undefined;
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default:
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break;
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}
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}
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}
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}
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