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!50 多段线偏移优化

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pull/51/head
ChenX 7 years ago
parent e03fd66f99
commit 9b3bfc5551
3 changed files with 68 additions and 78 deletions
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112
src/DatabaseServices/Polyline.ts
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@ -519,9 +519,9 @@ export class Polyline extends Curve
let newPlList: Array<Polyline> = this.linkPolylineGroup(plList, offsetDist);
// //分离出自交的线
let outputPls = this.removeSelfIntersect(newPlList, offsetDist);
newPlList = this.cuttingPolyLine(newPlList, offsetDist);
this.linkPLine(newPlList, offsetDist);
this.cuttingPolyLine(newPlList, offsetDist);
outputPls.push(...this.arrangePlineList(newPlList));
return outputPls;
}
//偏移曲线
@ -556,7 +556,32 @@ export class Polyline extends Curve
{
return;
}
return this.copyPolyline([startV, endV]);
let pl = this.copyPolyline([startV, endV]);
pl.CloseMark = false;
return pl;
}
/**
* 尝试相邻多段线段收尾相连
* @private
* @param {Polyline[]} pls
* @memberof Polyline
*/
private linkPLine(pls: Polyline[], offset: number)
{
for (let i = 0; i < pls.length - 1; i++)
{
let frontLine = pls[i];
let laterLine = pls[i + 1];
let interPts = frontLine.IntersectWith(laterLine, IntersectOption.ExtendBoth);
if (interPts.length > 0)
{
let pt = this.selectPlInterPt(interPts, laterLine.StartPoint);
//调整前后两条多段线的首尾线
this.adjustFrontLine(frontLine.LineData[1], pt, frontLine.LineData[0]);
frontLine.LineData[1].pt = Vec3DTo2D(pt);
this.adjustLaterLine(laterLine.LineData[1], pt, laterLine.LineData[0]);
}
}
}
/**
* 删除自交多段线
@ -789,7 +814,7 @@ export class Polyline extends Curve
//整理多段线数组,把相连的组合成多段线,返回多段线数组
private arrangePlineList(pls: Array<Polyline>)
{
if (pls.length === 0) return;
if (pls.length === 0) return [];
let plDataList: PolylineProps[] = [];
let plList: Polyline[] = [];
plDataList.push(pls[0].LineData[0]);
@ -844,6 +869,7 @@ export class Polyline extends Curve
oldSlope = frontLine.GetFistDeriv(0);
//后面线
let laterLine = plList[i + 1];
if (i === plList.length - 1)
{
if (this.IsClose)
@ -860,9 +886,8 @@ export class Polyline extends Curve
// 多段线交点数组
let interPts = frontLine.IntersectWith(laterLine, IntersectOption.ExtendBoth);
//如果没有交点，则用圆弧连接
if (interPts.length === 0 && offsetDist)
if (interPts.length === 0)
{
let centerPt;
//取圆心，圆心离后面线start点距离等于偏移距离
@ -890,34 +915,26 @@ export class Polyline extends Curve
}
else
{
//半径矢量radLine,求交线段insertLine，半径线段
let [radLine, insertLine] = startLine.lengthSq() > endLine.lengthSq() ? [startLine, laterLine] : [endLine, frontLine];
// 以centerPt为圆心，偏移距离为为半径画圆
let tmpPlLine = new Circle(centerPt, Math.abs(offsetDist));
let pts = tmpPlLine.IntersectWith(insertLine, IntersectOption.OnBothOperands);
// //此处为测试代码
// if (pts.length === 0)
// {
// app.m_Database.ModelSpace.Append(insertLine);
// app.m_Database.ModelSpace.Append(tmpPlLine);
// pts.push(centerPt);
// }
intPt = pts[0];
let insLine = intPt.clone().sub(centerPt);
circleAngle = angleTo(insLine, radLine);
// 如果前面矢量小于后面的则交点在前面线，调整前面线凸度
if (startLine.lengthSq() <= endLine.lengthSq())
let tmpCir = new Circle(centerPt, Math.abs(offsetDist));
//只会和前面线相交,因为圆心选取是根据后面线startPoint偏移距离处的点,只会与后面线相切,允许前面线延伸
let pts = tmpCir.IntersectWith(frontLine, IntersectOption.OnBothOperands);
if (pts.length > 0)
{
//选取交点,如果有多个选离前面线start点近的
intPt = this.selectPlInterPt(pts, frontLine.StartPoint);
let insLine = intPt.clone().sub(centerPt);
circleAngle = angleTo(insLine, endLine);
this.adjustFrontLine(frontLine.LineData[1], intPt, startV);
}
else
{
//补圆弧交点在后面线，调整后面线点和凸度
this.adjustLaterLine(laterLine.LineData[1], intPt, endV);
// 与补线圆无交点,放弃补圆弧
newPlList.push(new Polyline([
startV, this.clonePlData(frontLine.LineData[1])
]))
startV = this.clonePlData(laterLine.LineData[0]);
continue;
}
}
let tmpPlData = {
@ -931,7 +948,6 @@ export class Polyline extends Curve
}
else
{
//是否存在同时存在2线上的交点
let pts = frontLine.IntersectWith(laterLine, IntersectOption.OnBothOperands);
interPt = pts.length > 0 ? pts[0] : this.selectPlInterPt(interPts, laterLine.StartPoint)
@ -960,8 +976,8 @@ export class Polyline extends Curve
let endV = this.clonePlData(frontLine.LineData[1]);
if (plList.length >= 3)
{
let laterLine = plList[0];
let pts = frontLine.IntersectWith(laterLine, 0);
let laterLine = newPlList[0];
let pts = frontLine.IntersectWith(laterLine, IntersectOption.OnBothOperands);
if (pts.length === 1)
{
this.adjustFrontLine(frontLine.LineData[1], pts[0], startV);
@ -972,14 +988,14 @@ export class Polyline extends Curve
}
let pl = new Polyline([startV, endV]);
newSlope = pl.GetFistDeriv(0);
if (!equaln(newSlope.angleTo(oldSlope), Math.PI, 1e-7))
if (pl.LineData[0].bul !== 0 || !equaln(newSlope.angleTo(oldSlope), Math.PI, 1e-7))
newPlList.push(pl);
}
return newPlList;
}
/**
* 优化连接多段数组,去除无用线
* //ToDo:保留优化算法
* //TODO:暂保留,待优化
* @private
* @param {Array<Polyline>} plList
* @returns
@ -1048,7 +1064,15 @@ export class Polyline extends Curve
}
return plList.length > 1 ? plList : [];
}
//选取合适交点
/**
* 选取离spt近的点作为交点
*
* @private
* @param {Vector3[]} pts
* @param {Vector3} spt
* @returns
* @memberof Polyline
*/
private selectPlInterPt(pts: Vector3[], spt: Vector3)
{
let pt: Vector3;
@ -1077,9 +1101,7 @@ export class Polyline extends Curve
*/
private cuttingPolyLine(plList: Polyline[], rad: number)
{
rad = Math.abs(rad);
// 每个原线段点画圆分割多段线
for (let i = 0; i < this.LineData.length; i++)
{
@ -1092,7 +1114,7 @@ export class Polyline extends Curve
let sDist = pl.StartPoint.distanceTo(centerPt);
let eDist = pl.EndPoint.distanceTo(centerPt);
// 如果线段在圆内,则为无效线
if (sDist <= rad && eDist <= rad)
if (sDist - rad <= 1e-7 && eDist - rad <= 1e-7)
{
//该段多段线和切割圆弧是否重合
if (pl.LineData[0].bul !== 0)
@ -1128,8 +1150,11 @@ export class Polyline extends Curve
}
else
{
//有可能误差错误漏掉切点
if (pts[0].distanceToSquared(pts[1]) <= 1e-8) continue;
let dist = pl.StartPoint.distanceTo(pts[0]);
let dist1 = pl.StartPoint.distanceTo(pts[1]);
//区分到pl的startPT近的和远的交点
let [pt, pt1] = dist < dist1 ? [pts[0], pts[1]] : [pts[1], pts[0]]
let clonePl = pl.Clone() as Polyline;
@ -1138,11 +1163,9 @@ export class Polyline extends Curve
this.adjustLaterLine(clonePl.LineData[1], pt1, clonePl.LineData[0]);
plList.splice(j + 1, 0, clonePl);
j++;
}
}
}
return plList;
}
private clonePlData(pl: PolylineProps)
{
@ -1228,7 +1251,7 @@ export class Polyline extends Curve
GetSnapPoints(): Array<THREE.Vector3>
{
let plList: Vector3[] = [];
for (let i = 0; i < this.EndParam; i += 0.5)
for (let i = 0; i < this.EndParam + 0.5; i += 0.5)
{
let p = this.GetPointAtParam(i);
plList.push(p);
@ -1261,7 +1284,7 @@ export class Polyline extends Curve
GetStretchPoints(): Array<Vector3>
{
let plList: Vector3[] = [];
for (let i = 0; i < this.m_LineData.length; i++)
for (let i = 0; i < this.EndParam + 1; i++)
{
let p = this.GetPointAtParam(i);
plList.push(p);
@ -1340,7 +1363,6 @@ export class Polyline extends Curve
{
super.ReadFile(file);
let ver = file.Read();
this.m_ClosedMark = file.Read();
this.m_LineData.length = 0;
let cout = file.Read();
for (let i = 0; i < cout; i++)
@ -1350,14 +1372,15 @@ export class Polyline extends Curve
this.m_LineData.push({ pt: v, bul: bul });
}
if (ver > 1)
this.m_ClosedMark = file.Read();
this.Update();
}
//对象将自身数据写入到文件.
WriteFile(file: CADFile)
{
super.WriteFile(file);
file.Write(1);
file.Write(this.m_ClosedMark);
file.Write(2);
file.Write(this.m_LineData.length);
for (let l of this.m_LineData)
@ -1365,5 +1388,6 @@ export class Polyline extends Curve
file.Write(l.pt.toArray());
file.Write(l.bul);
}
file.Write(this.m_ClosedMark);
}
}

16
src/UI/Components/cursor/cursor.css
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@ -1,16 +0,0 @@
.cursor>span {
position: absolute;
background: #fff;
}
.cursor>span:first-child {
width: 100px;
height: 1px;
top: 50px;
}
.cursor>span:last-child {
width: 1px;
height: 100px;
left: 50px;
}

18
src/UI/Components/cursor/cursor.tsx
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@ -1,18 +0,0 @@
import * as React from 'react';
import './cursor.css'
export interface AppProps
{
cursorPos: React.CSSProperties;
}
export default class Cursor extends React.Component<AppProps, {}> {
render()
{
return (
<div className='cursor' style={this.props.cursorPos}>
<span></span>
<span></span>
</div>
);
}
}
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