92 lines
2.0 KiB
C++
92 lines
2.0 KiB
C++
#include "collisionCheck.hpp"
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bool
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pFlow::collisionCheck::build()
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{
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fill(head_, static_cast<uint32>(-1));
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fill(next_, static_cast<uint32>(-1));
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for (auto i = 0uL; i < position_.size(); i++)
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{
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if(!searchBox_.isInside(position_[i]))
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{
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fatalErrorInFunction<<
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"Point "<< position_[i]<< "is not in search box"<<endl;
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}
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const auto ind = pointIndex(position_[i]);
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next_[i] = head_(ind.x(), ind.y(), ind.z());
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head_(ind.x(), ind.y(), ind.z()) = static_cast<uint32>(i);
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}
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return true;
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}
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pFlow::collisionCheck::collisionCheck(
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box sBox,
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real dx,
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const realx3Vector& pos,
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const realVector& diam
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)
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: searchBox_(sBox),
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dx_(dx),
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nCells_((sBox.maxPoint() - sBox.minPoint()) / dx + realx3(1.0)),
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position_(pos),
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diameters_(diam),
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next_("next", pos.size()),
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head_("head", nCells_.x(), nCells_.y(), nCells_.z())
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{
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if(!build())
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{
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fatalExit;
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}
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}
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bool
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pFlow::collisionCheck::checkPoint(const realx3& p, const real d) const
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{
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if(!searchBox_.isInside(p)) return false;
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const auto ind = pointIndex(p);
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uint32 n = head_(ind.x(), ind.y(), ind.z());
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while( n != -1)
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{
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if( (position_[n]-p).length() - 0.5*(diameters_[n]+d )<0.0 )
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{
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return false;
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}
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n = next_[n];
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}
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return true;
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}
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bool
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pFlow::collisionCheck::mapLastAddedParticle()
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{
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size_t n = position_.size()-1;
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if( next_.size() != n )
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{
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fatalErrorInFunction<<
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"size mismatch of next and position"<<endl;
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return false;
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}
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next_.push_back(-1);
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const auto& p = position_[n];
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if(!searchBox_.isInside(p))
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{
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fatalErrorInFunction<<
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"Point "<< p <<" is not inside the search box"<<endl;
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return false;
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}
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const auto ind = pointIndex(p);
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next_[n] = head_(ind.x(), ind.y(), ind.z());
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head_(ind.x(), ind.y(), ind.z()) = static_cast<uint32>(n);
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return true;
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}
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