1 files changed, 30 insertions, 0 deletions
diff --git a/Runtime/Geometry/BoundingUtils.h b/Runtime/Geometry/BoundingUtils.h
new file mode 100644
index 0000000..5338706
--- /dev/null
+++ b/Runtime/Geometry/BoundingUtils.h
@@ -0,0 +1,30 @@
+#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);