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Change in cylinder projector #51

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Change in cylinder projector #51

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17 changes: 9 additions & 8 deletions ugbase/lib_grid/refinement/projectors/cylinder_projector.h
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Original file line number Diff line number Diff line change
Expand Up @@ -142,29 +142,30 @@ class CylinderProjector : public RefinementProjector {
return 1;
}

number avDist = 0;
number minDist = std::numeric_limits<number>::max();
number maxDist = -std::numeric_limits<number>::max();
vector3 parentCenter (0, 0, 0);

for(size_t i = 0; i < numVrts; ++i){
vector3 p = pos(vrts[i]);
avDist += DistancePointToRay(p, m_center, m_axis);
number distToRay = DistancePointToRay(p, m_center, m_axis);
minDist = std::min(minDist, distToRay);
maxDist = std::max(maxDist, distToRay);
parentCenter += p;
}

avDist /= (number)numVrts;
const number dist = 0.5 * (minDist + maxDist);
VecScale(parentCenter, parentCenter, 1. / (number)numVrts);

vector3 proj, v;
ProjectPointToRay(proj, parentCenter, m_center, m_axis);
VecSubtract(v, parentCenter, proj);
number len = VecLength(v);
if(len > SMALL * avDist){ // if avDist is very small, len may be small, too
VecScale(v, v, avDist/len);
if(len > 1e-6 * dist){ // if avDist is very small, len may be small, too
VecScale(v, v, dist/len);
proj += v;
set_pos(vrt, proj);
}
else
set_pos(vrt, parentCenter);
set_pos(vrt, proj);

if(m_influenceRadius > 0) {
if(m_radius > m_influenceRadius){
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