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Corrected the code of the poisson sampling for getting subsamples of a given point cloud

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This commit is contained in:
Paolo Cignoni cignoni 2009-03-26 11:02:30 +00:00
parent 1f1eef3c31
commit 4109eecfec
1 changed files with 15 additions and 9 deletions
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24
src/meshlabplugins/filter_sampling/filter_sampling.cpp
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@ -680,14 +680,20 @@ bool FilterDocSampling::applyFilter(QAction *action, MeshDocument &md, FilterPar
Log("Computing %i Poisson Samples for an expected radius of %f",sampleNum,radius);
// first of all generate montecarlo samples for fast lookup
CMeshO presampledMesh;
BaseSampler sampler(&presampledMesh);
sampler.qualitySampling =true;
if(subsampleFlag) tri::SurfaceSampling<CMeshO,BaseSampler>::AllVertex(curMM->cm, sampler);
else tri::SurfaceSampling<CMeshO,BaseSampler>::Montecarlo(curMM->cm, sampler, sampleNum*par.getInt("MontecarloRate"));
Log("Generated %i Montecarlo Samples",presampledMesh.vn);
presampledMesh.bbox = curMM->cm.bbox; // we want the same bounding box
CMeshO *presampledMesh=&(curMM->cm);
CMeshO MontecarloMesh; // this mesh is used only if we need real pooisson sampling (and therefore we need to choose points different from the starting mesh vertices)
if(!subsampleFlag)
{
BaseSampler sampler(&MontecarloMesh);
sampler.qualitySampling =true;
tri::SurfaceSampling<CMeshO,BaseSampler>::Montecarlo(curMM->cm, sampler, sampleNum*par.getInt("MontecarloRate"));
Log("Generated %i Montecarlo Samples",MontecarloMesh.vn);
MontecarloMesh.bbox = curMM->cm.bbox; // we want the same bounding box
CMeshO *presampledMesh=&MontecarloMesh;
}
BaseSampler mps(&(mm->cm));
tri::SurfaceSampling<CMeshO,BaseSampler>::PoissonDiskParam pp;
@ -698,7 +704,7 @@ bool FilterDocSampling::applyFilter(QAction *action, MeshDocument &md, FilterPar
Log("Variable Density variance is %f, radius can vary from %f to %f",pp.radiusVariance,radius/pp.radiusVariance,radius*pp.radiusVariance);
}
tri::SurfaceSampling<CMeshO,BaseSampler>::Poissondisk(curMM->cm, mps, presampledMesh, radius,pp);
tri::SurfaceSampling<CMeshO,BaseSampler>::Poissondisk(curMM->cm, mps, *presampledMesh, radius,pp);
vcg::tri::UpdateBounding<CMeshO>::Box(mm->cm);
Log(GLLogStream::FILTER,"Sampling created a new mesh of %i points",md.mm()->cm.vn);