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Vector push_back/pop_bakc do not work

BeKinect (22)
In my code I use a vector of arrays. In my function I have to use push_back and pop_back. If I use my code I get an error message:
vector iterator + offset out of range
.
So my first idea was to comment the push_back line and see what happens. If I call the pop_back methode I get a Mesage:
Expression vector empty before pop.



So this is my code

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std::vector<std::array<double, 3>>::const_iterator closestPoint(const std::array<double, 3>& point, const std::vector<std::array<double, 3>>& matrix)
{
	double bestDistance = DBL_MAX;
	auto bestIt = matrix.end();

	for(auto it= matrix.begin(); it!= matrix.end(); ++it)
	{
		const auto distance = squareDistancePoints(point, *it);
		if(distance < bestDistance)
		{
			bestDistance = distance;
			bestIt = it;
		}
	}

	return bestIt;
}

int    exportTxt(
    const std::vector<std::vector<LineSegment>> &slicesWithLineSegments,
    const v3                                    &aabbSize) {

    const size_t nSlices = slicesWithLineSegments.size();
    const size_t slicePerRow = (size_t)sqrt((float)nSlices);
	
    std::vector<std::array<double, 3>> matrix;
    std::vector<std::array<double, 3>> hull;
	
    int spalte=3;
    unsigned int zeile;

    for (size_t i=0; i<nSlices; ++i) {
    	const std::vector<LineSegment> &lss = slicesWithLineSegments[i];
    		
	zeile = 2*lss.size();
	matrix.resize(zeile);
	
	int j=0;

	for(size_t i = 0;i<lss.size();i++) {
		int k = j+1;
				
		matrix[j][0]=lss[i].v[0].x;
		matrix[j][1]=lss[i].v[0].y;
		matrix[j][2]=lss[i].v[0].z;
		matrix[k][0]=lss[i].v[1].x;
		matrix[k][1]=lss[i].v[1].y;
		matrix[k][2]=lss[i].v[1].z;
		
		j=j+2;
	}

	hull.push_back(matrix.back());
	matrix.pop_back();

	while(!matrix.empty())
        {
		auto it = closestPoint(hull.back(), matrix);
		hull.push_back(*it);
		matrix.erase(it);
	}
	
    }

file.close();
unsortedfile.close();
return 0;
}


I just do not know, what I'm doing wrong. Can someone help me?
Last edited on
Moschops (7244)
auto it = closestPoint(hull.back(), matrix);

Is the returned oterator valid?
BeKinect (22)
@Moschops: Sorry I forgot this function. I edited my question. But I don't think this is the problem, because I receive the same error massages, if I delete the while-loop
Moschops (7244)
Point at the push_back that provokes the error message so we can see which push_back you're talking about.
Last edited on
coder777 (8439)
As soon as zeile is 0 you must not execute line 53/54.
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