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#pragma once
#include "Runtime/Math/Vector3.h"
#include <vector>
class MinMaxAABB;
class Plane;
class Matrix4x4f;
struct SpotLightBounds
{
enum { kPointCount = 5 };
Vector3f points[kPointCount];
};
// 7-----6 far
// / /|
// 3-----2 |
// | 4 | 5
// | |/
// 0-----1 near
void GetFrustumPoints( const Matrix4x4f& clipToWorld, Vector3f* frustum );
void GetFrustumPortion( const Vector3f* frustum, float nearSplit, float farSplit, Vector3f* outPortion );
void CalcHullBounds(const Vector3f* __restrict hullPoints, const UInt8* __restrict hullCounts, UInt8 hullFaces, const Plane& nearPlane, const Matrix4x4f& cameraWorldToClip, MinMaxAABB& aabb);
void CalculateFocusedLightHull( const Vector3f* frustum, const Vector3f& lightDir, const MinMaxAABB& sceneAABB, std::vector<Vector3f>& points );
void CalculateBoundingSphereFromFrustumPoints(const Vector3f points[8], Vector3f& outCenter, float& outRadius);
void CalculateSphereFrom4Points(const Vector3f points[4], Vector3f& outCenter, float& outRadius);
void CalculateSpotLightBounds (const float range, const float cotanHalfSpotAngle, const Matrix4x4f& lightMatrix, SpotLightBounds& outBounds);
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