!223 并集共线线段连接

Merge pull request !223 from ZoeLeeFZ/fixUnion

src/DatabaseServices/Contour.ts

@@ -8,13 +8,14 @@ import { Circle } from "./Circle";
 import { Curve } from "./Curve";
 import { Polyline } from "./Polyline";
 import { Vector3 } from "three";
+import { FixIndex } from "../Common/Utils";
 
 export class Contour
 {
     private m_Curve: Polyline | Circle;
-    static CreateContour(cus: Curve[])
+    static CreateContour(cus: Curve[], needLink = true)
     {
-        let closeCurve = Contour.Combine(cus) as Polyline | Circle;
+        let closeCurve = Contour.Combine(cus, needLink) as Polyline | Circle;
         if (closeCurve && closeCurve.IsClose)
         {
             if (closeCurve instanceof Polyline && closeCurve.CloseMark === false)
@@ -82,7 +83,31 @@ export class Contour
     UnionBoolOperation(target: Contour): Contour[]
     {
         let resultCus = this.getOperatedCurves(target);
-        return Contour.GetAllContour(resultCus.unionList);
+        //并集后的线段表如果有共线的直接合并起来
+        let cus: Curve[] = [];
+        for (let pl of resultCus.unionList)
+        {
+            if (pl instanceof Polyline)
+                cus.push(...pl.Explode());
+            else
+                cus.push(pl);
+        }
+        let cuGroups = curveLinkGroup(cus);
+        for (let g of cuGroups)
+        {
+            for (let i = 0; i < g.length; i++)
+            {
+                let c1 = g[i];
+                let nextI = FixIndex(i + 1, g);
+                let c2 = g[nextI];
+                if (c1.Join(c2))
+                {
+                    g.splice(nextI, 1);
+                    i--;
+                }
+            }
+        }
+        return Contour.GetAllContour(cuGroups);
     }
     //差集:等于0完全被减去
     SubstactBoolOperation(target: Contour): Contour[]
@@ -193,16 +218,26 @@ export class Contour
         return { intersectionList, unionList, subtractList };
     }
 
-    //获得所有闭合的轮廓.
-    static GetAllContour(cus: Curve[])
+    /**
+     * 获得全部闭合曲线
+     * @若传入二维曲线数据,将默认子数组为闭合曲线段
+     */
+    static GetAllContour(cus: Curve[] | Curve[][]): Contour[]
     {
-        let cuGroups = curveLinkGroup(cus);
+        if (cus.length === 0)
+            return [];
+
+        let cuGroups: Curve[][];
+        if (Array.isArray(cus[0]))
+            cuGroups = cus as Curve[][];
+        else
+            cuGroups = curveLinkGroup(cus as Curve[]);
 
         let contours: Contour[] = []
 
-        cuGroups.forEach(cus =>
+        cuGroups.forEach(c =>
         {
-            contours.push(Contour.CreateContour(cus));
+            contours.push(Contour.CreateContour(c, false));
         })
         return contours.filter(c => c !== undefined && !equaln(c.Area, 0, 1e-6));
     }
@@ -213,11 +248,11 @@ export class Contour
      * @returns
      * @memberof Polyline
      */
-    static Combine(cus: Curve[]): Curve
+    static Combine(cus: Curve[], needLink = true): Curve
     {
         if (cus.length === 0) return undefined;
 
-        let groups = curveLinkGroup(cus);
+        let groups = needLink ? curveLinkGroup(cus) : [cus];
 
         let joinCus: Curve[] = [];
 

src/Geometry/SpaceParse/SurroundOutlineParse.ts

@@ -47,17 +47,6 @@ export class SurroundOutlineParse extends ISpaceParse
         for (let pl of pls)
         {
             let cus = pl.Explode().filter(cu => !equaln(cu.Length, 0, 1e-6));
-            for (let i = 0; i < cus.length; i++)
-            {
-                let c1 = cus[i];
-                let nextI = FixIndex(i + 1, cus);
-                let c2 = cus[nextI];
-                if (c1.Join(c2))
-                {
-                    cus.splice(nextI, 1);
-                    i--;
-                }
-            }
             this.m_Outlines.push(...cus);
         }
     }