FrustumClassification.h

#pragma once
#include "Base.h"
#include <glm/fwd.hpp>
 
#include "Rendering/DataFormat.h"
 
namespace Cogs::Core
{
  class Context;
 
  enum struct FrustumPlanes : uint8_t {
    InsideNone = 0,
    InsidePosX = 1,
    InsideNegX = 2,
    InsidePosY = 4,
    InsideNegY = 8,
    InsidePosZ = 16,
    InsideNegZ = 32,
    InsideAll = 63,
 
    InsideFar = 16,
    InsideNear = 32,
    InsideAllButNear = 31,
    InsideAllButFar = 47
  };
 
  inline FrustumPlanes operator | (FrustumPlanes lhs, FrustumPlanes rhs)
  {
    return static_cast<FrustumPlanes>(static_cast<uint8_t>(lhs) | static_cast<uint8_t>(rhs));
  }
 
  inline FrustumPlanes& operator |= (FrustumPlanes& lhs, FrustumPlanes rhs)
  {
    lhs = static_cast<FrustumPlanes>(static_cast<uint8_t>(lhs) | static_cast<uint8_t>(rhs));
    return lhs;
  }
 
  inline FrustumPlanes operator & (FrustumPlanes lhs, FrustumPlanes rhs)
  {
    return static_cast<FrustumPlanes>(static_cast<uint8_t>(lhs) & static_cast<uint8_t>(rhs));
  }
 
  inline FrustumPlanes& operator &= (FrustumPlanes& lhs, FrustumPlanes rhs)
  {
    lhs = static_cast<FrustumPlanes>(static_cast<uint8_t>(lhs) & static_cast<uint8_t>(rhs)); return lhs;
  }
 
  COGSCORE_DLL_API FrustumPlanes frustumClassifyBoundingBox(const glm::mat4& localToClip,
                                                            const glm::vec3& min,
                                                            const glm::vec3& max);
 
  COGSCORE_DLL_API FrustumPlanes frustumClassifyBoundingBox(const glm::mat4& localToClip,
                                                            const glm::vec3& min,
                                                            const glm::vec3& max,
                                                            const float discardThresholdSqr,
                                                            const float keepThreshold);
 
}