diff options
| -rw-r--r-- | indra/llmath/m4math.cpp | 17 | ||||
| -rw-r--r-- | indra/llmath/m4math.h | 1 |
2 files changed, 18 insertions, 0 deletions
diff --git a/indra/llmath/m4math.cpp b/indra/llmath/m4math.cpp index 7c7f60154d..3700142982 100644 --- a/indra/llmath/m4math.cpp +++ b/indra/llmath/m4math.cpp @@ -785,6 +785,23 @@ bool operator!=(const LLMatrix4 &a, const LLMatrix4 &b) return FALSE; } +bool operator<(const LLMatrix4& a, const LLMatrix4 &b) +{ + U32 i, j; + for (i = 0; i < NUM_VALUES_IN_MAT4; i++) + { + for (j = 0; j < NUM_VALUES_IN_MAT4; j++) + { + if (a.mMatrix[i][j] != b.mMatrix[i][j]) + { + return a.mMatrix[i][j] < b.mMatrix[i][j]; + } + } + } + + return false; +} + const LLMatrix4& operator*=(LLMatrix4 &a, F32 k) { U32 i, j; diff --git a/indra/llmath/m4math.h b/indra/llmath/m4math.h index de981b7646..6007b96bd9 100644 --- a/indra/llmath/m4math.h +++ b/indra/llmath/m4math.h @@ -237,6 +237,7 @@ public: friend bool operator==(const LLMatrix4 &a, const LLMatrix4 &b); // Return a == b friend bool operator!=(const LLMatrix4 &a, const LLMatrix4 &b); // Return a != b + friend bool operator<(const LLMatrix4 &a, const LLMatrix4& b); // Return a < b friend const LLMatrix4& operator+=(LLMatrix4 &a, const LLMatrix4 &b); // Return a + b friend const LLMatrix4& operator-=(LLMatrix4 &a, const LLMatrix4 &b); // Return a - b |