intersect_ray_plane.h

// Description: Intersection between a ray and a plane

#ifndef PASTELGEOMETRY_INTERSECT_RAY_PLANE_H
#define PASTELGEOMETRY_INTERSECT_RAY_PLANE_H

#include "pastel/sys/mytypes.h"
#include "pastel/geometry/shape/ray.h"
#include "pastel/geometry/shape/plane.h"
#include "pastel/geometry/intersect/intersect_line_plane.h"
#include "pastel/sys/vector/vector.h"

namespace Pastel
{

    //! Finds the intersection between a ray and a plane.
    /*!
   This algorithm works also with non-unit ray direction and
   plane normal.
   */
    template <typename Real, int N>
    bool intersect(
        const Ray<Real, N>& ray,
        const Plane<Real, N>& plane,
        Real& t)
    {
        if (!intersect(ray.line(), plane, t))
        {
            return false;
        }

        return (t >= 0);
    }

}

#endif