81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
|
// This file is part of libigl, a simple c++ geometry processing library.
|
||
|
|
//
|
||
|
|
// Copyright (C) 2015 Alec Jacobson <alecjacobson@gmail.com>
|
||
|
|
//
|
||
|
|
// This Source Code Form is subject to the terms of the Mozilla Public License
|
||
|
|
// v. 2.0. If a copy of the MPL was not distributed with this file, You can
|
||
|
|
// obtain one at http://mozilla.org/MPL/2.0/.
|
||
|
|
#ifndef IGL_AMBIENT_OCCLUSION_H
|
||
|
|
#define IGL_AMBIENT_OCCLUSION_H
|
||
|
|
#include "igl_inline.h"
|
||
|
|
#include "AABB.h"
|
||
|
|
#include <Eigen/Core>
|
||
|
|
#include <functional>
|
||
|
|
namespace igl
|
||
|
|
{
|
||
|
|
// Compute ambient occlusion per given point
|
||
|
|
//
|
||
|
|
// Inputs:
|
||
|
|
// shoot_ray function handle that outputs hits of a given ray against a
|
||
|
|
// mesh (embedded in function handles as captured variable/data)
|
||
|
|
// P #P by 3 list of origin points
|
||
|
|
// N #P by 3 list of origin normals
|
||
|
|
// Outputs:
|
||
|
|
// S #P list of ambient occlusion values between 1 (fully occluded) and
|
||
|
|
// 0 (not occluded)
|
||
|
|
//
|
||
|
|
template <
|
||
|
|
typename DerivedP,
|
||
|
|
typename DerivedN,
|
||
|
|
typename DerivedS >
|
||
|
|
IGL_INLINE void ambient_occlusion(
|
||
|
|
const std::function<
|
||
|
|
bool(
|
||
|
|
const Eigen::Vector3f&,
|
||
|
|
const Eigen::Vector3f&)
|
||
|
|
> & shoot_ray,
|
||
|
|
const Eigen::PlainObjectBase<DerivedP> & P,
|
||
|
|
const Eigen::PlainObjectBase<DerivedN> & N,
|
||
|
|
const int num_samples,
|
||
|
|
Eigen::PlainObjectBase<DerivedS> & S);
|
||
|
|
// Inputs:
|
||
|
|
// AABB axis-aligned bounding box hierarchy around (V,F)
|
||
|
|
template <
|
||
|
|
typename DerivedV,
|
||
|
|
int DIM,
|
||
|
|
typename DerivedF,
|
||
|
|
typename DerivedP,
|
||
|
|
typename DerivedN,
|
||
|
|
typename DerivedS >
|
||
|
|
IGL_INLINE void ambient_occlusion(
|
||
|
|
const igl::AABB<DerivedV,DIM> & aabb,
|
||
|
|
const Eigen::PlainObjectBase<DerivedV> & V,
|
||
|
|
const Eigen::PlainObjectBase<DerivedF> & F,
|
||
|
|
const Eigen::PlainObjectBase<DerivedP> & P,
|
||
|
|
const Eigen::PlainObjectBase<DerivedN> & N,
|
||
|
|
const int num_samples,
|
||
|
|
Eigen::PlainObjectBase<DerivedS> & S);
|
||
|
|
// Inputs:
|
||
|
|
// V #V by 3 list of mesh vertex positions
|
||
|
|
// F #F by 3 list of mesh face indices into V
|
||
|
|
template <
|
||
|
|
typename DerivedV,
|
||
|
|
typename DerivedF,
|
||
|
|
typename DerivedP,
|
||
|
|
typename DerivedN,
|
||
|
|
typename DerivedS >
|
||
|
|
IGL_INLINE void ambient_occlusion(
|
||
|
|
const Eigen::PlainObjectBase<DerivedV> & V,
|
||
|
|
const Eigen::PlainObjectBase<DerivedF> & F,
|
||
|
|
const Eigen::PlainObjectBase<DerivedP> & P,
|
||
|
|
const Eigen::PlainObjectBase<DerivedN> & N,
|
||
|
|
const int num_samples,
|
||
|
|
Eigen::PlainObjectBase<DerivedS> & S);
|
||
|
|
|
||
|
|
};
|
||
|
|
#ifndef IGL_STATIC_LIBRARY
|
||
|
|
# include "ambient_occlusion.cpp"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|