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80 lines
2.5 KiB
C++
80 lines
2.5 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2015 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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#ifndef IGL_AMBIENT_OCCLUSION_H
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#define IGL_AMBIENT_OCCLUSION_H
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#include "igl_inline.h"
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#include "AABB.h"
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#include <Eigen/Core>
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#include <functional>
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namespace igl
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{
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// Compute ambient occlusion per given point
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//
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// Inputs:
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// shoot_ray function handle that outputs hits of a given ray against a
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// mesh (embedded in function handles as captured variable/data)
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// P #P by 3 list of origin points
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// N #P by 3 list of origin normals
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// Outputs:
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// S #P list of ambient occlusion values between 1 (fully occluded) and
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// 0 (not occluded)
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//
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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 ambient_occlusion(
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const std::function<
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bool(
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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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// Inputs:
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// AABB axis-aligned bounding box hierarchy around (V,F)
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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 ambient_occlusion(
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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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// Inputs:
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// V #V by 3 list of mesh vertex positions
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// F #F by 3 list of mesh face indices into V
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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 ambient_occlusion(
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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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#ifndef IGL_STATIC_LIBRARY
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# include "ambient_occlusion.cpp"
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#endif
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#endif
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