mirror of
https://github.com/SoftFever/OrcaSlicer.git
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2ae2672ee9
Fixing dep build script on Windows and removing some warnings. Use bundled igl by default. Not building with the dependency scripts if not explicitly stated. This way, it will stay in Fix the libigl patch to include C source files in header only mode.
182 lines
6.8 KiB
C++
182 lines
6.8 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2017 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#include "shape_diameter_function.h"
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#include "random_dir.h"
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#include "barycenter.h"
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#include "ray_mesh_intersect.h"
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#include "per_vertex_normals.h"
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#include "per_face_normals.h"
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#include "EPS.h"
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#include "Hit.h"
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#include "parallel_for.h"
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#include <functional>
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#include <vector>
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#include <algorithm>
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template <
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typename DerivedP,
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typename DerivedN,
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typename DerivedS >
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IGL_INLINE void igl::shape_diameter_function(
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const std::function<
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double(
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const Eigen::Vector3f&,
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const Eigen::Vector3f&)
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> & shoot_ray,
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const Eigen::PlainObjectBase<DerivedP> & P,
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const Eigen::PlainObjectBase<DerivedN> & N,
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const int num_samples,
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Eigen::PlainObjectBase<DerivedS> & S)
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{
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using namespace Eigen;
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const int n = P.rows();
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// Resize output
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S.resize(n,1);
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// Embree seems to be parallel when constructing but not when tracing rays
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const MatrixXf D = random_dir_stratified(num_samples).cast<float>();
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const auto & inner = [&P,&N,&num_samples,&D,&S,&shoot_ray](const int p)
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{
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const Vector3f origin = P.row(p).template cast<float>();
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const Vector3f normal = N.row(p).template cast<float>();
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int num_hits = 0;
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double total_distance = 0;
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for(int s = 0;s<num_samples;s++)
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{
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Vector3f d = D.row(s);
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// Shoot _inward_
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if(d.dot(normal) > 0)
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{
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// reverse ray
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d *= -1;
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}
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const double dist = shoot_ray(origin,d);
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if(std::isfinite(dist))
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{
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total_distance += dist;
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num_hits++;
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}
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}
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S(p) = total_distance/(double)num_hits;
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};
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parallel_for(n,inner,1000);
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}
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template <
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typename DerivedV,
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int DIM,
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typename DerivedF,
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typename DerivedP,
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typename DerivedN,
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typename DerivedS >
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IGL_INLINE void igl::shape_diameter_function(
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const igl::AABB<DerivedV,DIM> & aabb,
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const Eigen::PlainObjectBase<DerivedV> & V,
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const Eigen::PlainObjectBase<DerivedF> & F,
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const Eigen::PlainObjectBase<DerivedP> & P,
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const Eigen::PlainObjectBase<DerivedN> & N,
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const int num_samples,
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Eigen::PlainObjectBase<DerivedS> & S)
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{
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const auto & shoot_ray = [&aabb,&V,&F](
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const Eigen::Vector3f& _s,
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const Eigen::Vector3f& dir)->double
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{
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Eigen::Vector3f s = _s+1e-4*dir;
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igl::Hit hit;
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if(aabb.intersect_ray(
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V,
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F,
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s .cast<typename DerivedV::Scalar>().eval(),
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dir.cast<typename DerivedV::Scalar>().eval(),
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hit))
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{
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return hit.t;
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}else
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{
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return std::numeric_limits<double>::infinity();
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}
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};
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return shape_diameter_function(shoot_ray,P,N,num_samples,S);
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}
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedP,
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typename DerivedN,
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typename DerivedS >
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IGL_INLINE void igl::shape_diameter_function(
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const Eigen::PlainObjectBase<DerivedV> & V,
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const Eigen::PlainObjectBase<DerivedF> & F,
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const Eigen::PlainObjectBase<DerivedP> & P,
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const Eigen::PlainObjectBase<DerivedN> & N,
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const int num_samples,
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Eigen::PlainObjectBase<DerivedS> & S)
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{
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if(F.rows() < 100)
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{
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// Super naive
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const auto & shoot_ray = [&V,&F](
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const Eigen::Vector3f& _s,
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const Eigen::Vector3f& dir)->double
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{
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Eigen::Vector3f s = _s+1e-4*dir;
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igl::Hit hit;
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if(ray_mesh_intersect(s,dir,V,F,hit))
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{
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return hit.t;
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}else
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{
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return std::numeric_limits<double>::infinity();
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}
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};
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return shape_diameter_function(shoot_ray,P,N,num_samples,S);
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}
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AABB<DerivedV,3> aabb;
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aabb.init(V,F);
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return shape_diameter_function(aabb,V,F,P,N,num_samples,S);
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}
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedS>
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IGL_INLINE void igl::shape_diameter_function(
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const Eigen::PlainObjectBase<DerivedV> & V,
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const Eigen::PlainObjectBase<DerivedF> & F,
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const bool per_face,
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const int num_samples,
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Eigen::PlainObjectBase<DerivedS> & S)
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{
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if (per_face)
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{
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DerivedV N;
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igl::per_face_normals(V, F, N);
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DerivedV P;
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igl::barycenter(V, F, P);
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return igl::shape_diameter_function(V, F, P, N, num_samples, S);
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}
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else
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{
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DerivedV N;
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igl::per_vertex_normals(V, F, N);
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return igl::shape_diameter_function(V, F, V, N, num_samples, S);
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}
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}
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#ifdef IGL_STATIC_LIBRARY
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// Explicit template instantiation
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template void igl::shape_diameter_function<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, 1, 0, -1, 1> >(std::function<double (Eigen::Matrix<float, 3, 1, 0, 3, 1> const&, Eigen::Matrix<float, 3, 1, 0, 3, 1> const&)> const&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, int, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 1, 0, -1, 1> >&);
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template void igl::shape_diameter_function<Eigen::Matrix<double, -1, 3, 0, -1, 3>, Eigen::Matrix<double, -1, 3, 0, -1, 3>, Eigen::Matrix<double, -1, 1, 0, -1, 1> >(std::function<double (Eigen::Matrix<float, 3, 1, 0, 3, 1> const&, Eigen::Matrix<float, 3, 1, 0, 3, 1> const&)> const&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 3, 0, -1, 3> > const&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 3, 0, -1, 3> > const&, int, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 1, 0, -1, 1> >&);
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template void igl::shape_diameter_function<Eigen::Matrix<double, 1, 3, 1, 1, 3>, Eigen::Matrix<double, 1, 3, 1, 1, 3>, Eigen::Matrix<double, -1, 1, 0, -1, 1> >(std::function<double (Eigen::Matrix<float, 3, 1, 0, 3, 1> const&, Eigen::Matrix<float, 3, 1, 0, 3, 1> const&)> const&, Eigen::PlainObjectBase<Eigen::Matrix<double, 1, 3, 1, 1, 3> > const&, Eigen::PlainObjectBase<Eigen::Matrix<double, 1, 3, 1, 1, 3> > const&, int, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 1, 0, -1, 1> >&);
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template void igl::shape_diameter_function<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, -1, 0, -1, -1> >(std::function<double (Eigen::Matrix<float, 3, 1, 0, 3, 1> const&, Eigen::Matrix<float, 3, 1, 0, 3, 1> const&)> const&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, int, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&);
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template void igl::shape_diameter_function<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, -1, 0, -1, -1> >(Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, bool, int, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&);
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#endif
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