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poisson disk sampling (under construction...)

This commit is contained in:
Massimiliano Corsini 2009-01-15 22:38:37 +00:00
parent 87b8c55144
commit dad1103184
1 changed files with 44 additions and 29 deletions
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73
vcg/complex/trimesh/point_sampling.h
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@ -660,34 +660,40 @@ static CoordType RandomBox(vcg::Box3<ScalarType> box)
// naive projection generates a sample inside the given box, and project it in the
// faces intersected by this box. It always returns a valid sample.
static vcg::Point3<ScalarType> naiveProjection(vcg::Box3<ScalarType> box, std::vector<FaceType *> faces)
static vcg::Point3<ScalarType> naiveProjection(vcg::Box3<ScalarType> box,
MetroMesh &mesh,
vcg::SpatialHashTable<FaceType, ScalarType> & sht)
{
vcg::Point3<ScalarType> p;
//p = RandomBox(box);
p = RandomBox(box);
<<<<<<< .mine
// projection on the faces..
//...TODO...
=======
//FaceIterator
>>>>>>> .r3201
// projection on the faces
CoordType closestp = p;
ScalarType maxdist = box.DimX();
ScalarType mindist;
return p;
// THIS NOT WORK...
//vcg::tri::GetClosestFace<MetroMesh, vcg::SpatialHashTable<FaceType, ScalarType> >(
// mesh, sht, p, maxdist, mindist, closestp);
/* THIS NOT WORK...
typedef vcg::tri::FaceTmark<MetroMesh> Marker;
Marker markerFunctor;
markerFunctor.SetMesh(&mesh);
FaceType *nearestF=0;
vcg::face::PointDistanceBaseFunctor<ScalarType> PDistFunct;
nearestF = sht.GetClosest(PDistFunct,markerFunctor,p,maxdist,mindist,closestp);
*/
return closestp;
}
// Montecarlo "reduced" generates a sample on the faces intersected by the given box
static vcg::Point3<ScalarType> naiveMontecarloReduced(vcg::Box3<ScalarType> box, std::vector<FaceType *> faces)
static vcg::Point3<ScalarType> naiveMontecarloReduced(vcg::Box3<ScalarType> box,
std::vector<FaceType *> faces)
{
vcg::Point3<ScalarType> p;
int size = faces.size();
assert(size >= 1);
int index = RandomInt(size);
RandomBaricentric();
//...TODO...
return p;
}
@ -695,14 +701,24 @@ static vcg::Point3<ScalarType> naiveMontecarloReduced(vcg::Box3<ScalarType> box,
// faces intersected by this box. If the projected point lies outside the box
// the sample is re-generated.
// false is returned if the maximum number of attempts has been reached.
static bool naiveProjectionInside(vcg::Box3<ScalarType> box, std::vector<FaceType *> faces,
int maxattemps, vcg::Point3<ScalarType> &p)
static bool naiveProjectionInside(vcg::Box3<ScalarType> box,
MetroMesh &mesh,
vcg::SpatialHashTable<FaceType, ScalarType> & sht,
int maxattemps, vcg::Point3<ScalarType> &p)
{
bool flaginside = false;
int k=1;
do
{
p = naiveProjection(box, mesh, sht);
} while(false);
return true;
// check if p is inside the box
flaginside = box.IsIn(p);
k++;
} while (!flaginside && k < maxattemps);
return flaginside;
}
// naive surface generation generates a sample on the faces intersected by the given box
@ -711,10 +727,7 @@ static bool naiveProjectionInside(vcg::Box3<ScalarType> box, std::vector<FaceTyp
static bool naiveMontecarloReducedInside(vcg::Box3<ScalarType> box, std::vector<FaceType *> faces,
int maxattemps, vcg::Point3<ScalarType> &p)
{
do
{
} while(false);
//...TODO...
return true;
}
@ -723,6 +736,7 @@ static bool naiveMontecarloReducedInside(vcg::Box3<ScalarType> box, std::vector<
static vcg::Point3<ScalarType> perfectProjection(vcg::Box3<ScalarType> box, std::vector<FaceType *> faces)
{
vcg::Point3<ScalarType> p;
//...TODO...
return p;
}
@ -731,6 +745,7 @@ static vcg::Point3<ScalarType> perfectProjection(vcg::Box3<ScalarType> box, std:
static vcg::Point3<ScalarType> perfectMontecarloReduced(vcg::Box3<ScalarType> box, std::vector<FaceType *> faces)
{
vcg::Point3<ScalarType> p;
//...TODO...
return p;
}
@ -883,7 +898,7 @@ static void Poissondisk(MetroMesh &m, VertexSampler &ps, int sampleNum, int vers
if (version == 0)
{
// naive projection method (unsafe)
s = naiveProjection(currentBox, faces);
s = naiveProjection(currentBox, m, searchSHT);
}
else if (version == 1)
{
@ -893,7 +908,7 @@ static void Poissondisk(MetroMesh &m, VertexSampler &ps, int sampleNum, int vers
else if (version == 2)
{
// naive projection method (safer, but still not perfect)
validsample = naiveProjectionInside(currentBox, faces, 10, s);
validsample = naiveProjectionInside(currentBox, m, searchSHT, 10, s);
}
else if (version == 3)
{
@ -907,7 +922,7 @@ static void Poissondisk(MetroMesh &m, VertexSampler &ps, int sampleNum, int vers
}
else if (version == 5)
{
// perfect montercalo reduced
// perfect montecarlo reduced
s = perfectMontecarloReduced(currentBox, faces);
}