From 5ae9bbe3583384afab8eb95a134ccb74aee6487a Mon Sep 17 00:00:00 2001
From: 张世豪 <979909237@qq.com>
Date: 星期四, 25 十二月 2025 13:46:38 +0800
Subject: [PATCH] 曾加修改密码功能
---
src/lujing/YixinglujingNoObstacle.java | 247 ++++++++++++++++++++++++++++++++++++++++++++++---
1 files changed, 231 insertions(+), 16 deletions(-)
diff --git a/src/lujing/YixinglujingNoObstacle.java b/src/lujing/YixinglujingNoObstacle.java
index 1919731..1672ccc 100644
--- a/src/lujing/YixinglujingNoObstacle.java
+++ b/src/lujing/YixinglujingNoObstacle.java
@@ -1,23 +1,238 @@
package lujing;
-import java.util.List;
-import java.util.ArrayList;
+import java.util.*;
/**
- * 鏃犻殰纰嶇墿寮傚舰鍦板潡璺緞瑙勫垝绫�
+ * 寮傚舰鑽夊湴璺緞瑙勫垝 - 鍑瑰杈瑰舰鍏煎浼樺寲鐗� V5.0
+ * 淇锛氳В鍐冲嚬澶氳竟褰㈡壂鎻忕嚎璺ㄨ秺杈圭晫鐨勯棶棰橈紝浼樺寲璺緞瀵归綈
*/
public class YixinglujingNoObstacle {
-
- /**
- * 鐢熸垚璺緞
- * @param boundaryCoordsStr 鍦板潡杈圭晫鍧愭爣瀛楃涓� "x1,y1;x2,y2;..."
- * @param mowingWidthStr 鍓茶崏瀹藉害瀛楃涓诧紝濡� "0.34"
- * @param safetyMarginStr 瀹夊叏杈硅窛瀛楃涓诧紝濡� "0.2"
- * @return 璺緞鍧愭爣瀛楃涓诧紝鏍煎紡 "x1,y1;x2,y2;..."
- */
- public static String planPath(String boundaryCoordsStr, String mowingWidthStr, String safetyMarginStr) {
- // TODO: 瀹炵幇寮傚舰鍦板潡鏃犻殰纰嶇墿璺緞瑙勫垝绠楁硶
- // 鐩墠浣跨敤榛樿鏂规硶浣滀负涓存椂瀹炵幇
- throw new UnsupportedOperationException("YixinglujingNoObstacle.planPath 灏氭湭瀹炵幇");
+
+ public static List<PathSegment> planPath(String coordinates, String widthStr, String marginStr) {
+ List<Point> rawPoints = parseCoordinates(coordinates);
+ if (rawPoints.size() < 3) return new ArrayList<>();
+
+ double mowWidth = Double.parseDouble(widthStr);
+ double safeMargin = Double.parseDouble(marginStr);
+
+ // 1. 棰勫鐞嗭細纭繚閫嗘椂閽堥『搴�
+ ensureCounterClockwise(rawPoints);
+
+ // 2. 鐢熸垚鍐呯缉澶氳竟褰紙瀹夊叏杈圭晫锛�
+ List<Point> boundary = getInsetPolygon(rawPoints, safeMargin);
+ if (boundary.size() < 3) return new ArrayList<>();
+
+ // 3. 纭畾鏈�浼樹綔涓氳搴�
+ double bestAngle = findOptimalAngle(boundary);
+
+ // 4. 鑾峰彇棣栦釜浣滀笟鐐癸紝鐢ㄤ簬瀵归綈鍥磋竟璧风偣
+ Point firstScanStart = getFirstScanPoint(boundary, mowWidth, bestAngle);
+
+ // 5. 瀵归綈鍥磋竟锛氫娇鍥磋竟鏈�鍚庣粨鏉熶簬闈犺繎鎵弿璧风偣鐨勪綅缃�
+ List<Point> alignedBoundary = alignBoundaryStart(boundary, firstScanStart);
+
+ List<PathSegment> finalPath = new ArrayList<>();
+
+ // 6. 绗竴闃舵锛氬洿杈硅矾寰�
+ for (int i = 0; i < alignedBoundary.size(); i++) {
+ Point pStart = alignedBoundary.get(i);
+ Point pEnd = alignedBoundary.get((i + 1) % alignedBoundary.size());
+ finalPath.add(new PathSegment(pStart, pEnd, true));
+ }
+
+ // 7. 绗簩闃舵锛氱敓鎴愬唴閮ㄦ壂鎻忚矾寰勶紙淇鍑归儴绌鸿秺闂锛�
+ Point lastEdgePos = alignedBoundary.get(0);
+ List<PathSegment> scanPath = generateGlobalScanPath(boundary, mowWidth, bestAngle, lastEdgePos);
+
+ finalPath.addAll(scanPath);
+
+ return finalPath;
}
-}
+
+ private static List<PathSegment> generateGlobalScanPath(List<Point> polygon, double width, double angle, Point currentPos) {
+ List<PathSegment> segments = new ArrayList<>();
+ List<Point> rotatedPoly = new ArrayList<>();
+ for (Point p : polygon) rotatedPoly.add(rotatePoint(p, -angle));
+
+ double minY = Double.MAX_VALUE, maxY = -Double.MAX_VALUE;
+ for (Point p : rotatedPoly) {
+ minY = Math.min(minY, p.y);
+ maxY = Math.max(maxY, p.y);
+ }
+
+ boolean leftToRight = true;
+ // 姝ラ暱 y 浠庢渶灏忓埌鏈�澶ф壂鎻�
+ for (double y = minY + width/2; y <= maxY - width/2; y += width) {
+ List<Double> xIntersections = getXIntersections(rotatedPoly, y);
+ if (xIntersections.size() < 2) continue;
+ Collections.sort(xIntersections);
+
+ // 澶勭悊鍑瑰杈瑰舰锛氭瘡涓や釜鐐圭粍鎴愪竴涓湁鏁堜綔涓氭
+ List<PathSegment> lineSegmentsInRow = new ArrayList<>();
+ for (int i = 0; i < xIntersections.size() - 1; i += 2) {
+ Point pS = rotatePoint(new Point(xIntersections.get(i), y), angle);
+ Point pE = rotatePoint(new Point(xIntersections.get(i + 1), y), angle);
+ lineSegmentsInRow.add(new PathSegment(pS, pE, true));
+ }
+
+ // 鏍规嵁褰撳墠S鍨嬫柟鍚戞帓搴忎綔涓氭
+ if (!leftToRight) {
+ Collections.reverse(lineSegmentsInRow);
+ for (PathSegment s : lineSegmentsInRow) {
+ Point temp = s.start; s.start = s.end; s.end = temp;
+ }
+ }
+
+ // 灏嗕綔涓氭杩炴帴鍒版�昏矾寰�
+ for (PathSegment s : lineSegmentsInRow) {
+ if (Math.hypot(currentPos.x - s.start.x, currentPos.y - s.start.y) > 0.01) {
+ // 濡傛灉闂磋窛澶т簬1cm锛屾坊鍔犵┖璧拌矾寰�
+ segments.add(new PathSegment(currentPos, s.start, false));
+ }
+ segments.add(s);
+ currentPos = s.end;
+ }
+ leftToRight = !leftToRight;
+ }
+ return segments;
+ }
+
+ private static Point getFirstScanPoint(List<Point> polygon, double width, double angle) {
+ List<Point> rotatedPoly = new ArrayList<>();
+ for (Point p : polygon) rotatedPoly.add(rotatePoint(p, -angle));
+ double minY = Double.MAX_VALUE;
+ for (Point p : rotatedPoly) minY = Math.min(minY, p.y);
+
+ double firstY = minY + width/2;
+ List<Double> xInter = getXIntersections(rotatedPoly, firstY);
+ if (xInter.isEmpty()) return polygon.get(0);
+ Collections.sort(xInter);
+ return rotatePoint(new Point(xInter.get(0), firstY), angle);
+ }
+
+ private static List<Point> alignBoundaryStart(List<Point> boundary, Point targetStart) {
+ int bestIdx = 0;
+ double minDist = Double.MAX_VALUE;
+ for (int i = 0; i < boundary.size(); i++) {
+ double d = Math.hypot(boundary.get(i).x - targetStart.x, boundary.get(i).y - targetStart.y);
+ if (d < minDist) { minDist = d; bestIdx = i; }
+ }
+ List<Point> aligned = new ArrayList<>();
+ for (int i = 0; i < boundary.size(); i++) {
+ aligned.add(boundary.get((bestIdx + i) % boundary.size()));
+ }
+ return aligned;
+ }
+
+ private static List<Double> getXIntersections(List<Point> rotatedPoly, double y) {
+ List<Double> xIntersections = new ArrayList<>();
+ for (int i = 0; i < rotatedPoly.size(); i++) {
+ Point p1 = rotatedPoly.get(i);
+ Point p2 = rotatedPoly.get((i + 1) % rotatedPoly.size());
+ if ((p1.y <= y && p2.y > y) || (p2.y <= y && p1.y > y)) {
+ double x = p1.x + (y - p1.y) * (p2.x - p1.x) / (p2.y - p1.y);
+ xIntersections.add(x);
+ }
+ }
+ return xIntersections;
+ }
+
+ private static double findOptimalAngle(List<Point> polygon) {
+ double bestAngle = 0;
+ double minHeight = Double.MAX_VALUE;
+ for (int i = 0; i < polygon.size(); i++) {
+ Point p1 = polygon.get(i), p2 = polygon.get((i + 1) % polygon.size());
+ double angle = Math.atan2(p2.y - p1.y, p2.x - p1.x);
+ double h = calculateHeightAtAngle(polygon, angle);
+ if (h < minHeight) { minHeight = h; bestAngle = angle; }
+ }
+ return bestAngle;
+ }
+
+ private static double calculateHeightAtAngle(List<Point> poly, double angle) {
+ double minY = Double.MAX_VALUE, maxY = -Double.MAX_VALUE;
+ for (Point p : poly) {
+ Point rp = rotatePoint(p, -angle);
+ minY = Math.min(minY, rp.y); maxY = Math.max(maxY, rp.y);
+ }
+ return maxY - minY;
+ }
+
+ private static List<Point> getInsetPolygon(List<Point> points, double margin) {
+ List<Point> result = new ArrayList<>();
+ int n = points.size();
+ for (int i = 0; i < n; i++) {
+ Point pPrev = points.get((i - 1 + n) % n);
+ Point pCurr = points.get(i);
+ Point pNext = points.get((i + 1) % n);
+
+ double d1x = pCurr.x - pPrev.x, d1y = pCurr.y - pPrev.y;
+ double l1 = Math.hypot(d1x, d1y);
+ double d2x = pNext.x - pCurr.x, d2y = pNext.y - pCurr.y;
+ double l2 = Math.hypot(d2x, d2y);
+
+ if (l1 < 1e-6 || l2 < 1e-6) continue;
+
+ // 鍗曚綅娉曞悜閲�
+ double n1x = -d1y / l1, n1y = d1x / l1;
+ double n2x = -d2y / l2, n2y = d2x / l2;
+
+ // 瑙掑钩鍒嗙嚎鏂瑰悜
+ double bisectorX = n1x + n2x, bisectorY = n1y + n2y;
+ double bLen = Math.hypot(bisectorX, bisectorY);
+ if (bLen < 1e-6) { bisectorX = n1x; bisectorY = n1y; }
+ else { bisectorX /= bLen; bisectorY /= bLen; }
+
+ double cosHalfAngle = n1x * bisectorX + n1y * bisectorY;
+ double dist = margin / Math.max(cosHalfAngle, 0.1);
+
+ // 闄愬埗鏈�澶т綅绉婚噺锛岄槻姝㈡瀬灏栬鐣稿彉
+ dist = Math.min(dist, margin * 5);
+
+ result.add(new Point(pCurr.x + bisectorX * dist, pCurr.y + bisectorY * dist));
+ }
+ return result;
+ }
+
+ private static Point rotatePoint(Point p, double angle) {
+ double cos = Math.cos(angle), sin = Math.sin(angle);
+ return new Point(p.x * cos - p.y * sin, p.x * sin + p.y * cos);
+ }
+
+ private static void ensureCounterClockwise(List<Point> points) {
+ double sum = 0;
+ for (int i = 0; i < points.size(); i++) {
+ Point p1 = points.get(i), p2 = points.get((i + 1) % points.size());
+ sum += (p2.x - p1.x) * (p2.y + p1.y);
+ }
+ if (sum > 0) Collections.reverse(points);
+ }
+
+ private static List<Point> parseCoordinates(String coordinates) {
+ List<Point> points = new ArrayList<>();
+ String[] pairs = coordinates.split(";");
+ for (String pair : pairs) {
+ String[] xy = pair.split(",");
+ if (xy.length == 2) points.add(new Point(Double.parseDouble(xy[0]), Double.parseDouble(xy[1])));
+ }
+ if (points.size() > 1 && points.get(0).equals(points.get(points.size()-1))) points.remove(points.size()-1);
+ return points;
+ }
+
+ public static class Point {
+ public double x, y;
+ public Point(double x, double y) { this.x = x; this.y = y; }
+ @Override
+ public boolean equals(Object o) {
+ if (!(o instanceof Point)) return false;
+ Point p = (Point) o;
+ return Math.abs(x - p.x) < 1e-4 && Math.abs(y - p.y) < 1e-4;
+ }
+ }
+
+ public static class PathSegment {
+ public Point start, end;
+ public boolean isMowing; // true: 鍓茶崏涓�, false: 绌鸿浇绉诲姩
+ public PathSegment(Point s, Point e, boolean m) { this.start = s; this.end = e; this.isMowing = m; }
+ }
+}
\ No newline at end of file
--
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