Frustum.hpp

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#pragma once
 
#include <glm/glm.hpp>
 
namespace Video {
class AxisAlignedBoundingBox;
class Sphere;
 
 
class Frustum {
  public:
 
    explicit Frustum(const glm::mat4& matrix);
 
 
    bool Intersects(const AxisAlignedBoundingBox& aabb) const;
 
 
    bool Intersects(const Sphere& sphere) const;
 
  private:
    glm::vec4 planes[6];
 
    // The distance returned is the signed distance in normal vector units.
    // To ensure the "true" distance the plane equation has to be normalized.
    static float DistanceToPoint(const glm::vec4& plane, const glm::vec3& point);
};
} // namespace Video