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			72 lines
		
	
	
	
		
			2 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			72 lines
		
	
	
	
		
			2 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| #ifndef OPENMW_COMPONENTS_DETOURNAVIGATOR_TILEBOUNDS_H
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| #define OPENMW_COMPONENTS_DETOURNAVIGATOR_TILEBOUNDS_H
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| 
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| #include <components/misc/convert.hpp>
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| 
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| #include <osg/Vec2f>
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| #include <osg/Vec2i>
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| 
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| #include <BulletCollision/CollisionShapes/btCollisionShape.h>
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| #include <LinearMath/btTransform.h>
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| 
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| #include <algorithm>
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| #include <optional>
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| #include <tuple>
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| 
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| namespace DetourNavigator
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| {
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|     struct TileBounds
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|     {
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|         osg::Vec2f mMin;
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|         osg::Vec2f mMax;
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|     };
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| 
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|     inline auto tie(const TileBounds& value) noexcept
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|     {
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|         return std::tie(value.mMin, value.mMax);
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|     }
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| 
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|     inline bool operator<(const TileBounds& lhs, const TileBounds& rhs) noexcept
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|     {
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|         return tie(lhs) < tie(rhs);
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|     }
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| 
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|     inline bool operator==(const TileBounds& lhs, const TileBounds& rhs) noexcept
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|     {
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|         return tie(lhs) == tie(rhs);
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|     }
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| 
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|     inline bool operator!=(const TileBounds& lhs, const TileBounds& rhs) noexcept
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|     {
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|         return !(lhs == rhs);
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|     }
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| 
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|     inline std::optional<TileBounds> getIntersection(const TileBounds& a, const TileBounds& b) noexcept
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|     {
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|         const float minX = std::max(a.mMin.x(), b.mMin.x());
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|         const float maxX = std::min(a.mMax.x(), b.mMax.x());
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|         if (minX > maxX)
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|             return std::nullopt;
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|         const float minY = std::max(a.mMin.y(), b.mMin.y());
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|         const float maxY = std::min(a.mMax.y(), b.mMax.y());
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|         if (minY > maxY)
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|             return std::nullopt;
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|         return TileBounds{ osg::Vec2f(minX, minY), osg::Vec2f(maxX, maxY) };
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|     }
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| 
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|     inline TileBounds maxCellTileBounds(const osg::Vec2i& position, int size)
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|     {
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|         return TileBounds{ osg::Vec2f(position.x(), position.y()) * size,
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|             osg::Vec2f(position.x() + 1, position.y() + 1) * size };
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|     }
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| 
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|     inline TileBounds makeObjectTileBounds(const btCollisionShape& shape, const btTransform& transform)
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|     {
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|         btVector3 aabbMin;
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|         btVector3 aabbMax;
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|         shape.getAabb(transform, aabbMin, aabbMax);
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|         return TileBounds{ Misc::Convert::toOsgXY(aabbMin), Misc::Convert::toOsgXY(aabbMax) };
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|     }
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| }
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| 
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| #endif
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