diff options
Diffstat (limited to 'indra/newview')
| -rwxr-xr-x | indra/newview/llmaniprotate.cpp | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/indra/newview/llmaniprotate.cpp b/indra/newview/llmaniprotate.cpp index 7861573908..50863ac970 100755 --- a/indra/newview/llmaniprotate.cpp +++ b/indra/newview/llmaniprotate.cpp @@ -1241,9 +1241,9 @@ LLQuaternion LLManipRotate::dragUnconstrained( S32 x, S32 y ) LLVector3 axis = mMouseDown % mMouseCur; axis.normVec(); - F32 angle = acos(mMouseDown * mMouseCur); + F32 angle = atan2(sqrtf(axis * axis), mMouseDown * mMouseCur); LLQuaternion sphere_rot( angle, axis ); - + if (is_approx_zero(1.f - mMouseDown * mMouseCur)) { return LLQuaternion::DEFAULT; @@ -1638,9 +1638,9 @@ LLQuaternion LLManipRotate::dragConstrained( S32 x, S32 y ) mInSnapRegime = FALSE; } - angle = acos(mMouseCur * mMouseDown); - - F32 dir = (mMouseDown % mMouseCur) * constraint_axis; // cross product + LLVector3 cross_product = mMouseDown % mMouseCur; + angle = atan2(sqrtf(cross_product * cross_product), mMouseCur * mMouseDown); + F32 dir = cross_product * constraint_axis; // cross product if( dir < 0.f ) { angle *= -1.f; |