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author | madmaxoft <github@xoft.cz> | 2013-09-01 12:25:53 +0200 |
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committer | madmaxoft <github@xoft.cz> | 2013-09-01 12:25:53 +0200 |
commit | f91ff9e68b6332ce6ca1903fed4f7a17f6e5c80d (patch) | |
tree | e31c1911bea6068955beab9b975237f6f9d9d678 /source/BoundingBox.cpp | |
parent | AnvilStats: ignoring the world subfolder (diff) | |
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Diffstat (limited to 'source/BoundingBox.cpp')
-rw-r--r-- | source/BoundingBox.cpp | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/source/BoundingBox.cpp b/source/BoundingBox.cpp new file mode 100644 index 000000000..9af726223 --- /dev/null +++ b/source/BoundingBox.cpp @@ -0,0 +1,195 @@ + +// BoundingBox.cpp + +// Implements the cBoundingBox class representing an axis-aligned bounding box with floatingpoint coords + +#include "Globals.h" +#include "BoundingBox.h" + + + + + +cBoundingBox::cBoundingBox(double a_MinX, double a_MaxX, double a_MinY, double a_MaxY, double a_MinZ, double a_MaxZ) : + m_Min(a_MinX, a_MinY, a_MinZ), + m_Max(a_MaxX, a_MaxY, a_MaxZ) +{ +} + + + + + +cBoundingBox::cBoundingBox(const Vector3d & a_Min, const Vector3d & a_Max) : + m_Min(a_Min), + m_Max(a_Max) +{ +} + + + + + +cBoundingBox::cBoundingBox(const Vector3d & a_Pos, double a_Radius, double a_Height) : + m_Min(a_Pos.x - a_Radius, a_Pos.y, a_Pos.z - a_Radius), + m_Max(a_Pos.x + a_Radius, a_Pos.y + a_Height, a_Pos.z + a_Radius) +{ +} + + + + + +cBoundingBox::cBoundingBox(const cBoundingBox & a_Orig) : + m_Min(a_Orig.m_Min), + m_Max(a_Orig.m_Max) +{ +} + + + + + +void cBoundingBox::Move(double a_OffX, double a_OffY, double a_OffZ) +{ + m_Min.x += a_OffX; + m_Min.y += a_OffY; + m_Min.z += a_OffZ; + m_Max.x += a_OffX; + m_Max.y += a_OffY; + m_Max.z += a_OffZ; +} + + + + + +void cBoundingBox::Move(const Vector3d & a_Off) +{ + m_Min.x += a_Off.x; + m_Min.y += a_Off.y; + m_Min.z += a_Off.z; + m_Max.x += a_Off.x; + m_Max.y += a_Off.y; + m_Max.z += a_Off.z; +} + + + + + +void cBoundingBox::Expand(double a_ExpandX, double a_ExpandY, double a_ExpandZ) +{ + m_Min.x -= a_ExpandX; + m_Min.y -= a_ExpandY; + m_Min.z -= a_ExpandZ; + m_Max.x += a_ExpandX; + m_Max.y += a_ExpandY; + m_Max.z += a_ExpandZ; +} + + + + + +bool cBoundingBox::DoesIntersect(const cBoundingBox & a_Other) +{ + return ( + ((a_Other.m_Min.x < m_Max.x) && (a_Other.m_Max.x > m_Min.x)) && // X coords intersect + ((a_Other.m_Min.y < m_Max.y) && (a_Other.m_Max.y > m_Min.y)) && // Y coords intersect + ((a_Other.m_Min.z < m_Max.z) && (a_Other.m_Max.z > m_Min.z)) // Z coords intersect + ); +} + + + + + +cBoundingBox cBoundingBox::Union(const cBoundingBox & a_Other) +{ + return cBoundingBox( + std::min(m_Min.x, a_Other.m_Min.x), + std::min(m_Min.y, a_Other.m_Min.y), + std::min(m_Min.z, a_Other.m_Min.z), + std::max(m_Max.x, a_Other.m_Max.x), + std::max(m_Max.y, a_Other.m_Max.y), + std::max(m_Max.z, a_Other.m_Max.z) + ); +} + + + + + +bool cBoundingBox::IsInside(const Vector3d & a_Point) +{ + return ( + ((a_Point.x >= m_Min.x) && (a_Point.x < m_Max.x)) && + ((a_Point.y >= m_Min.y) && (a_Point.y < m_Max.y)) && + ((a_Point.z >= m_Min.z) && (a_Point.z < m_Max.z)) + ); +} + + + + + +bool cBoundingBox::IsInside(double a_X, double a_Y,double a_Z) +{ + return ( + ((a_X >= m_Min.x) && (a_X < m_Max.x)) && + ((a_Y >= m_Min.y) && (a_Y < m_Max.y)) && + ((a_Z >= m_Min.z) && (a_Z < m_Max.z)) + ); +} + + + + + +bool cBoundingBox::IsInside(cBoundingBox & a_Other) +{ + // If both a_Other's coords are inside this, then the entire a_Other is inside + return (IsInside(a_Other.m_Min) && IsInside(a_Other.m_Max)); +} + + + + + +bool cBoundingBox::IsInside(const Vector3d & a_Min, const Vector3d & a_Max) +{ + // If both coords are inside this, then the entire a_Other is inside + return (IsInside(a_Min) && IsInside(a_Max)); +} + + + + + +bool cBoundingBox::Intersect(const cBoundingBox & a_Other, cBoundingBox & a_Intersection) +{ + a_Intersection.m_Min.x = std::max(m_Min.x, a_Other.m_Min.x); + a_Intersection.m_Max.x = std::min(m_Max.x, a_Other.m_Max.x); + if (a_Intersection.m_Min.x >= a_Intersection.m_Max.x) + { + return false; + } + a_Intersection.m_Min.y = std::max(m_Min.y, a_Other.m_Min.y); + a_Intersection.m_Max.y = std::min(m_Max.y, a_Other.m_Max.y); + if (a_Intersection.m_Min.y >= a_Intersection.m_Max.y) + { + return false; + } + a_Intersection.m_Min.z = std::max(m_Min.z, a_Other.m_Min.z); + a_Intersection.m_Max.z = std::min(m_Max.z, a_Other.m_Max.z); + if (a_Intersection.m_Min.z >= a_Intersection.m_Max.z) + { + return false; + } + return true; +} + + + + |