Method update

src/core/virtual_path.cpp:84–129

}

VirtualCoordVector::size_type PathCoordVector::update(VirtualCoordVector::size_type part_start)
{
	auto& flags = virtual_coords.flags;
	auto part_end = virtual_coords.size() - 1;
	if (part_start <= part_end)
	{	
		Q_ASSERT(virtual_coords.size() == flags.size());
		
		if (flags[part_start].isHolePoint())
		{
			auto pos = virtual_coords[0];
			qWarning("PathCoordVector at %g %g (mm) has an invalid hole at index %d.",
			         pos.x(), -pos.y(), part_start);
		}
		
		clear();
		if (empty() || (part_start > 0 && flags[part_start-1].isHolePoint()))
		{
			emplace_back(virtual_coords[part_start], part_start, 0.0, 0.0);
		}
		
		for (auto index = part_start + 1; index <= part_end; ++index)
		{
			if (flags[index-1].isCurveStart())
			{
				Q_ASSERT(index+2 <= part_end);
				
				// Add curve coordinates
				curveToPathCoord(virtual_coords[index-1], virtual_coords[index], virtual_coords[index+1], virtual_coords[index+2], index-1, 0, 1);
				index += 2;
			}
			
			// Add end point
			const PathCoord& prev = back();
			emplace_back(virtual_coords[index], index, 0.0, prev.clen + prev.pos.distanceTo(virtual_coords[index]));
			
			Q_ASSERT(back().index == index);
			
			if (index < part_end && flags[index].isHolePoint())
			{
				part_end = index;
			}
		}
	}
	return part_end;
}

bool PathCoordVector::isClosed() const
{