aabb.hpp

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#pragma once
 
#include <glm/vec3.hpp>
#include <optional>
#include <toast/export.hpp>
 
namespace physics {
 
struct TOAST_API AABB {
  glm::vec3 min {};
  glm::vec3 max {};
 
  [[nodiscard]]
  auto overlaps(const AABB& other) const -> bool;
  [[nodiscard]]
  auto contains(const AABB& other) const -> bool;
  [[nodiscard]]
  auto expanded(float amount) const -> AABB;
  [[nodiscard]]
  auto area() const -> float;
 
  struct RayHit {
    float t_min;
    float t_max;
  };
 
  [[nodiscard]]
  auto intersectRay(const glm::vec3& origin, const glm::vec3& inv_dir) const -> std::optional<RayHit>;
};
 
[[nodiscard]]
auto combine(const AABB& lhs, const AABB& rhs) -> AABB;
 
[[nodiscard]]
auto operator+(const AABB& lhs, const AABB& rhs) -> AABB;
 
}