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first sample for harmonic interpolation

This commit is contained in:
Paolo Cignoni 2014-11-03 15:07:07 +00:00
parent 0a42a15d35
commit 0e9c582aeb
2 changed files with 92 additions and 0 deletions
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84
apps/sample/trimesh_harmonic/trimesh_harmonic.cpp Normal file
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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004-2009 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
#include<vcg/complex/complex.h>
#include<wrap/io_trimesh/import_ply.h>
#include<wrap/io_trimesh/export_ply.h>
#include<vcg/complex/algorithms/update/color.h>
#include<vcg/complex/algorithms/update/quality.h>
#include<vcg/complex/algorithms/harmonic.h>
using namespace vcg;
using namespace std;
class MyFace;
class MyVertex;
struct MyUsedTypes : public UsedTypes< Use<MyVertex> ::AsVertexType,
Use<MyFace> ::AsFaceType>{};
class MyVertex : public Vertex<MyUsedTypes, vertex::Coord3f, vertex::Normal3f, vertex::VFAdj, vertex::Qualityf, vertex::Color4b, vertex::BitFlags >{};
class MyFace : public Face< MyUsedTypes, face::VertexRef, face::Normal3f, face::Mark, face::BitFlags, face::VFAdj, face::FFAdj > {};
class MyMesh : public tri::TriMesh< vector<MyVertex>, vector<MyFace> > {};
int main( int argc, char **argv )
{
MyMesh m;
if(argc < 2 )
{
printf("Usage: trimesh_harmonic mesh.ply\n");
return -1;
}
int ret= tri::io::ImporterPLY<MyMesh>::Open(m,argv[1]);
if(ret!=0)
{
printf("Unable to open %s for '%s'\n",argv[1],tri::io::ImporterPLY<MyMesh>::ErrorMsg(ret));
return -1;
}
tri::UpdateTopology<MyMesh>::FaceFace(m);
srand(time(0));
int ind0=rand()%m.vn;
int ind1=rand()%m.vn;
printf("Computing harmonic field from vertex %i to vertex %i\n",ind0,ind1);
// Get the two vertices with value set
tri::Harmonic<MyMesh, double>::ConstraintVec constraints;
constraints.push_back(tri::Harmonic<MyMesh, double>::Constraint(&(m.vert[ind0]), 1.0f));
constraints.push_back(tri::Harmonic<MyMesh, double>::Constraint(&(m.vert[ind1]), 2.0f));
MyMesh::PerVertexAttributeHandle<double> handle = tri::Allocator<MyMesh>::GetPerVertexAttribute<double>(m, "harmonic");
bool ok = tri::Harmonic<MyMesh, double>::ComputeScalarField(m, constraints, handle);
assert(ok);
tri::UpdateQuality<MyMesh>::VertexFromAttributeHandle(m,handle);
tri::UpdateColor<MyMesh>::PerVertexQualityRamp(m,1,2);
tri::io::ExporterPLY<MyMesh>::Save(m,"harmonic.ply",tri::io::Mask::IOM_VERTCOLOR | tri::io::Mask::IOM_VERTQUALITY);
return 0;
}

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apps/sample/trimesh_harmonic/trimesh_harmonic.pro Normal file
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include(../common.pri)
TARGET = trimesh_harmonic
SOURCES += trimesh_harmonic.cpp ../../../wrap/ply/plylib.cpp
CONFIG(release, debug | release){
DEFINES += NDEBUG
}