intersect_line_sphere.h

// Description: Intersection between a line and a sphere

#ifndef PASTELGEOMETRY_INTERSECT_LINE_SPHERE_H
#define PASTELGEOMETRY_INTERSECT_LINE_SPHERE_H

#include "pastel/sys/mytypes.h"
#include "pastel/geometry/shape/line.h"
#include "pastel/geometry/shape/sphere.h"
#include "pastel/sys/vector.h"

namespace Pastel
{

    //! Finds the intersection between a line and a sphere.
    /*!
   Post conditions:
   If true is returned, hitList[0] <= hitList[1].

   If the line intersects the sphere, there will always be
   two entries in the hitlist. If the hit is tangential,
   the entries will be the same.
   */

    template <typename Real, integer N>
        bool intersect(
            const Line<Real, N>& line,
            const Sphere<Real, N>& sphere,
            Vector<Real, 2>& hitList);

}

#include "pastel/geometry/intersect/intersect_line_sphere.hpp"

#endif