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Add distance between function for AABB

This commit is contained in:
Jack Andersen 2017-04-08 20:13:47 -10:00
parent 857944512f
commit 39e240bf25
1 changed files with 68 additions and 0 deletions
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68
include/zeus/CAABox.hpp
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@ -297,6 +297,74 @@ public:
(other.z < center.z ? max.z : min.z)};
}
inline float distanceBetween(const CAABox& other)
{
int intersects = 0;
if (max.x >= other.min.x && min.x <= other.max.x)
intersects |= 0x1;
if (max.y >= other.min.y && min.y <= other.max.y)
intersects |= 0x2;
if (max.z >= other.min.z && min.z <= other.max.z)
intersects |= 0x4;
float minX, maxX;
if (max.x < other.min.x)
{
minX = max.x;
maxX = other.min.x;
}
else
{
minX = min.x;
maxX = other.max.x;
}
float minY, maxY;
if (max.y < other.min.y)
{
minY = max.y;
maxY = other.min.y;
}
else
{
minY = min.y;
maxY = other.max.y;
}
float minZ, maxZ;
if (max.z < other.min.z)
{
minZ = max.z;
maxZ = other.min.z;
}
else
{
minZ = min.z;
maxZ = other.max.z;
}
switch (intersects)
{
case 0:
return zeus::CVector3f(maxX - minX, maxY - minY, maxZ - minZ).magnitude();
case 1:
return zeus::CVector2f(maxY - minY, maxZ - minZ).magnitude();
case 2:
return zeus::CVector2f(maxX - minX, maxZ - minZ).magnitude();
case 3:
return std::fabs(maxZ - minZ);
case 4:
return zeus::CVector2f(maxX - minX, maxY - minY).magnitude();
case 5:
return std::fabs(maxY - minY);
case 6:
return std::fabs(maxX - minX);
case 7:
default:
return 0.f;
}
}
inline CVector3f getPoint(const int point) const
{
int zOff = point & 4;