45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
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// 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_RAY_BOX_INTERSECT_H
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#define IGL_RAY_BOX_INTERSECT_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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#include <Eigen/Geometry>
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namespace igl
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{
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// Determine whether a ray origin+t*dir and box intersect within the ray's parameterized
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// range (t0,t1)
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//
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// Inputs:
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// source 3-vector origin of ray
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// dir 3-vector direction of ray
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// box axis aligned box
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// t0 hit only if hit.t less than t0
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// t1 hit only if hit.t greater than t1
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// Outputs:
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// tmin minimum of interval of overlap within [t0,t1]
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// tmax maximum of interval of overlap within [t0,t1]
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// Returns true if hit
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template <
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typename Derivedsource,
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typename Deriveddir,
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typename Scalar>
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IGL_INLINE bool ray_box_intersect(
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const Eigen::MatrixBase<Derivedsource> & source,
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const Eigen::MatrixBase<Deriveddir> & dir,
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const Eigen::AlignedBox<Scalar,3> & box,
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const Scalar & t0,
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const Scalar & t1,
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Scalar & tmin,
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Scalar & tmax);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "ray_box_intersect.cpp"
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#endif
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#endif
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