74 lines
2.2 KiB
C++
74 lines
2.2 KiB
C++
/*
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This file is part of Nori, a simple educational ray tracer
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Copyright (c) 2015 by Wenzel Jakob
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Nori is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License Version 3
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as published by the Free Software Foundation.
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Nori is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <nori/mesh.h>
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NORI_NAMESPACE_BEGIN
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/**
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* \brief Acceleration data structure for ray intersection queries
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*
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* The current implementation falls back to a brute force loop
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* through the geometry.
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*/
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class Accel {
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public:
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/**
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* \brief Register a triangle mesh for inclusion in the acceleration
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* data structure
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*
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* This function can only be used before \ref build() is called
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*/
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void addMesh(Mesh *mesh);
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/// Build the acceleration data structure (currently a no-op)
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void build();
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/// Return an axis-aligned box that bounds the scene
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const BoundingBox3f &getBoundingBox() const { return m_bbox; }
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/**
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* \brief Intersect a ray against all triangles stored in the scene and
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* return detailed intersection information
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*
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* \param ray
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* A 3-dimensional ray data structure with minimum/maximum extent
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* information
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*
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* \param its
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* A detailed intersection record, which will be filled by the
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* intersection query
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*
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* \param shadowRay
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* \c true if this is a shadow ray query, i.e. a query that only aims to
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* find out whether the ray is blocked or not without returning detailed
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* intersection information.
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*
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* \return \c true if an intersection was found
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*/
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bool rayIntersect(const Ray3f &ray, Intersection &its, bool shadowRay) const;
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private:
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Mesh *m_mesh = nullptr; ///< Mesh (only a single one for now)
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BoundingBox3f m_bbox; ///< Bounding box of the entire scene
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};
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NORI_NAMESPACE_END
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