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added sample for mesh mesh intersection with remeshing

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Paolo Cignoni 2017-04-11 19:41:24 +02:00
parent 9299552435
commit ce5f87188b
2 changed files with 102 additions and 0 deletions
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99
apps/sample/trimesh_intersection_mesh/trimesh_intersection_mesh.cpp Normal file
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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004-2016 \/)\/ *
* 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. *
* *
****************************************************************************/
/*! \file trimesh_intersection_plane.cpp
\ingroup code_sample
\brief An example of computing the intersection of a mesh with a plane,
saving this polyline as a well projected 2D SVG
and splicing the mesh in the two components below and over the plane
*/
#include <vcg/complex/complex.h>
#include <vcg/complex/algorithms/clean.h>
#include <vcg/complex/algorithms/intersection.h>
#include <vcg/complex/algorithms/refine.h>
#include <vcg/complex/algorithms/Update/color.h>
#include <vcg/complex/algorithms/create/platonic.h>
#include<vcg/complex/algorithms/isotropic_remeshing.h>
#include <wrap/io_trimesh/export_off.h>
using namespace std;
using namespace vcg;
class MyFace;
class MyVertex;
struct MyUsedTypes : public UsedTypes<
Use<MyVertex>::AsVertexType,
Use<MyFace> ::AsFaceType>{};
class MyVertex : public Vertex< MyUsedTypes, vertex::Coord3f, vertex::VFAdj, vertex::BitFlags, vertex::Normal3f, vertex::Qualityf, vertex::Mark>{};
class MyFace : public Face < MyUsedTypes, face::VertexRef, face::VFAdj, face::FFAdj, face::Color4b, face::BitFlags, face::Mark, face::Normal3f> {};
class MyMesh: public tri::TriMesh< vector<MyVertex>, vector<MyFace > >{};
int main(int ,char **)
{
MyMesh m1, m2;
Sphere(m1);
Hexahedron(m2);
printf("Created a sphere mesh of %i vertices %i edges\n",m1.VN(),m1.FN());
printf("Created a cube mesh of %i vertices %i edges\n",m2.VN(),m2.FN());
math::MarsenneTwisterRNG rnd;
Point3f direction = vcg::math::GeneratePointOnUnitSphereUniform<float,math::MarsenneTwisterRNG>(rnd);
tri::UpdatePosition<MyMesh>::Translate(m1,direction);
for(int i=0;i<10;++i)
{
tri::Clean<MyMesh>::SelectIntersectingFaces(m1,m2);
tri::UpdateSelection<MyMesh>::FaceDilate(m1);
tri::Clean<MyMesh>::SelectIntersectingFaces(m2,m1);
tri::UpdateSelection<MyMesh>::FaceDilate(m2);
IsotropicRemeshing<MyMesh>::Params params;
float len = (tri::Stat<MyMesh>::ComputeFaceEdgeLengthAverage(m1,true) + tri::Stat<MyMesh>::ComputeFaceEdgeLengthAverage(m1,true));
params.SetTargetLen(len);
params.SetFeatureAngleDeg(10);
params.iter=3;
params.selectedOnly=true;
printf(" Input mesh %8i v %8i f\n",m1.VN(),m1.FN());
IsotropicRemeshing<MyMesh>::Do(m1, params);
IsotropicRemeshing<MyMesh>::Do(m2, params);
printf(" Input mesh %8i v %8i f\n",m1.VN(),m1.FN());
}
tri::Clean<MyMesh>::SelectIntersectingFaces(m1,m2);
tri::Clean<MyMesh>::SelectIntersectingFaces(m2,m1);
int selCnt= tri::UpdateColor<MyMesh>::PerFaceConstant(m1,Color4b::Red,true);
printf("Intersected %i faces on sphere\n",selCnt);
selCnt= tri::UpdateColor<MyMesh>::PerFaceConstant(m2,Color4b::Red,true);
printf("Intersected %i faces on cube\n",selCnt);
tri::io::ExporterOFF<MyMesh>::Save(m1,"sphere.off",tri::io::Mask::IOM_FACECOLOR);
tri::io::ExporterOFF<MyMesh>::Save(m2,"cube.off",tri::io::Mask::IOM_FACECOLOR);
return 0;
}

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apps/sample/trimesh_intersection_mesh/trimesh_intersection_mesh.pro Normal file
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include(../common.pri)
TARGET = trimesh_intersection_mesh
SOURCES += trimesh_intersection_mesh.cpp