diff options
Diffstat (limited to 'source/Cuboid.cpp')
| -rw-r--r-- | source/Cuboid.cpp | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/source/Cuboid.cpp b/source/Cuboid.cpp index e50ea1faf..54dd1f1a4 100644 --- a/source/Cuboid.cpp +++ b/source/Cuboid.cpp @@ -7,7 +7,24 @@ -void cCuboid::Sort() +/// Returns true if the two specified intervals have a non-empty union +static bool DoIntervalsIntersect(int a_Min1, int a_Max1, int a_Min2, int a_Max2) +{ + return ( + ((a_Min1 >= a_Min2) && (a_Min1 <= a_Max2)) || // Start of first interval is within the second interval + ((a_Max1 >= a_Min2) && (a_Max1 <= a_Max2)) || // End of first interval is within the second interval + ((a_Min2 >= a_Min2) && (a_Min2 <= a_Max2)) // Start of second interval is within the first interval + ); +} + + + + + +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// cCuboid: + +void cCuboid::Sort(void) { if (p1.x > p2.x) { @@ -26,3 +43,32 @@ void cCuboid::Sort() + +bool cCuboid::DoesIntersect(const cCuboid & a_Other) const +{ + // In order for cuboids to intersect, each of their coord intervals need to intersect + return ( + DoIntervalsIntersect(p1.x, p2.x, a_Other.p1.x, a_Other.p2.x) && + DoIntervalsIntersect(p1.y, p2.y, a_Other.p1.y, a_Other.p2.y) && + DoIntervalsIntersect(p1.z, p2.z, a_Other.p1.z, a_Other.p2.z) + ); +} + + + + + +void cCuboid::Move(int a_OfsX, int a_OfsY, int a_OfsZ) +{ + p1.x += a_OfsX; + p1.y += a_OfsY; + p1.z += a_OfsZ; + p2.x += a_OfsX; + p2.y += a_OfsY; + p2.z += a_OfsZ; +} + + + + + |