ObjectARX计算重复的

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1. double overlapInDir(AcDbEntity *pline1, AcDbEntity *pline2, const AcGeVector3d &vDir)
2. {       
3.         double angle = vDir.angleTo(AcGeVector3d::kXAxis, AcGeVector3d::kZAxis);
4.         AcGeMatrix3d mat;
5.         mat.setToRotation(-angle, AcGeVector3d::kZAxis);
6.                
7.         AcDbEntity *plineRot1=nullptr, *plineRot2=nullptr;
8.         Acad::ErrorStatus es;
9.         es = pline1->getTransformedCopy(mat, plineRot1);
10.         es = pline2->getTransformedCopy(mat, plineRot2);
12.         AcDbExtents ext1, ext2;
13.         es = plineRot1->getGeomExtents(ext1);
14.         es = plineRot2->getGeomExtents(ext2);
15.         delete plineRot1;
16.         delete plineRot2;
17.         double l1 = ext1.minPoint().x, r1 = ext1.maxPoint().x;
18.         double l2 = ext2.minPoint().x, r2 = ext2.maxPoint().x;
19.         double l = std::max(l1,l2), r = std::min(r1,r2);
20.         double overlap = r - l;
22.         return overlap;
23. }

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