118 lines
2.0 KiB
C++
118 lines
2.0 KiB
C++
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#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
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#include "Cuboid.h"
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/// Returns true if the two specified intervals have a non-empty union
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static bool DoIntervalsIntersect(int a_Min1, int a_Max1, int a_Min2, int a_Max2)
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{
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return (
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((a_Min1 >= a_Min2) && (a_Min1 <= a_Max2)) || // Start of first interval is within the second interval
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((a_Max1 >= a_Min2) && (a_Max1 <= a_Max2)) || // End of first interval is within the second interval
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((a_Min2 >= a_Min1) && (a_Min2 <= a_Max1)) // Start of second interval is within the first interval
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);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cCuboid:
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void cCuboid::Assign(int a_X1, int a_Y1, int a_Z1, int a_X2, int a_Y2, int a_Z2)
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{
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p1.x = a_X1;
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p1.y = a_Y1;
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p1.z = a_Z1;
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p2.x = a_X2;
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p2.y = a_Y2;
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p2.z = a_Z2;
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}
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void cCuboid::Sort(void)
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{
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if (p1.x > p2.x)
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{
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std::swap(p1.x, p2.x);
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}
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if (p1.y > p2.y)
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{
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std::swap(p1.y, p2.y);
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}
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if (p1.z > p2.z)
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{
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std::swap(p1.z, p2.z);
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}
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}
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bool cCuboid::DoesIntersect(const cCuboid & a_Other) const
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{
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// In order for cuboids to intersect, each of their coord intervals need to intersect
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return (
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DoIntervalsIntersect(p1.x, p2.x, a_Other.p1.x, a_Other.p2.x) &&
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DoIntervalsIntersect(p1.y, p2.y, a_Other.p1.y, a_Other.p2.y) &&
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DoIntervalsIntersect(p1.z, p2.z, a_Other.p1.z, a_Other.p2.z)
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);
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}
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bool cCuboid::IsCompletelyInside(const cCuboid & a_Outer) const
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{
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return (
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(p1.x >= a_Outer.p1.x) &&
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(p2.x <= a_Outer.p2.x) &&
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(p1.y >= a_Outer.p1.y) &&
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(p2.y <= a_Outer.p2.y) &&
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(p1.z >= a_Outer.p1.z) &&
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(p2.z <= a_Outer.p2.z)
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);
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}
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void cCuboid::Move(int a_OfsX, int a_OfsY, int a_OfsZ)
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{
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p1.x += a_OfsX;
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p1.y += a_OfsY;
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p1.z += a_OfsZ;
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p2.x += a_OfsX;
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p2.y += a_OfsY;
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p2.z += a_OfsZ;
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}
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bool cCuboid::IsSorted(void) const
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{
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return (
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(p1.x <= p2.x) &&
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(p1.y <= p2.y) &&
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(p1.z <= p2.z)
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);
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}
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