Print done when done.

1 files changed, 92 insertions, 0 deletions

diff --git a/indra/llmath/v2math.cpp b/indra/llmath/v2math.cpp
new file mode 100644
index 0000000000..d4cff60f62
--- /dev/null
+++ b/indra/llmath/v2math.cpp
@@ -0,0 +1,92 @@
+/** 
+ * @file v2math.cpp
+ * @brief LLVector2 class implementation.
+ *
+ * Copyright (c) 2000-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#include "linden_common.h"
+
+//#include "vmath.h"
+#include "v2math.h"
+#include "v4math.h"
+#include "m4math.h"
+#include "m3math.h"
+#include "llquaternion.h"
+
+// LLVector2
+
+LLVector2 LLVector2::zero(0,0);
+
+
+// Non-member functions
+
+// Sets all values to absolute value of their original values
+// Returns TRUE if data changed
+BOOL LLVector2::abs()
+{
+	BOOL ret = FALSE;
+
+	if (mV[0] < 0.f) { mV[0] = -mV[0]; ret = TRUE; }
+	if (mV[1] < 0.f) { mV[1] = -mV[1]; ret = TRUE; }
+	
+	return ret;
+}
+
+
+F32 angle_between(const LLVector2& a, const LLVector2& b)
+{
+	LLVector2 an = a;
+	LLVector2 bn = b;
+	an.normVec();
+	bn.normVec();
+	F32 cosine = an * bn;
+	F32 angle = (cosine >= 1.0f) ? 0.0f :
+				(cosine <= -1.0f) ? F_PI :
+				acos(cosine);
+	return angle;
+}
+
+BOOL are_parallel(const LLVector2 &a, const LLVector2 &b, float epsilon)
+{
+	LLVector2 an = a;
+	LLVector2 bn = b;
+	an.normVec();
+	bn.normVec();
+	F32 dot = an * bn;
+	if ( (1.0f - fabs(dot)) < epsilon)
+	{
+		return TRUE;
+	}
+	return FALSE;
+}
+
+
+F32	dist_vec(const LLVector2 &a, const LLVector2 &b)
+{
+	F32 x = a.mV[0] - b.mV[0];
+	F32 y = a.mV[1] - b.mV[1];
+	return fsqrtf( x*x + y*y );
+}
+
+F32	dist_vec_squared(const LLVector2 &a, const LLVector2 &b)
+{
+	F32 x = a.mV[0] - b.mV[0];
+	F32 y = a.mV[1] - b.mV[1];
+	return x*x + y*y;
+}
+
+F32	dist_vec_squared2D(const LLVector2 &a, const LLVector2 &b)
+{
+	F32 x = a.mV[0] - b.mV[0];
+	F32 y = a.mV[1] - b.mV[1];
+	return x*x + y*y;
+}
+
+LLVector2 lerp(const LLVector2 &a, const LLVector2 &b, F32 u)
+{
+	return LLVector2(
+		a.mV[VX] + (b.mV[VX] - a.mV[VX]) * u,
+		a.mV[VY] + (b.mV[VY] - a.mV[VY]) * u );
+}