/indra/llmath/llquaternion2.h
C++ Header | 105 lines | 24 code | 21 blank | 60 comment | 0 complexity | a3082ddec7b3e973b4f9def18cf89dad MD5 | raw file
Possible License(s): LGPL-2.1
- /**
- * @file llquaternion2.h
- * @brief LLQuaternion2 class header file - SIMD-enabled quaternion class
- *
- * $LicenseInfo:firstyear=2010&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
- #ifndef LL_QUATERNION2_H
- #define LL_QUATERNION2_H
- /////////////////////////////
- // LLQuaternion2
- /////////////////////////////
- // This class stores a quaternion x*i + y*j + z*k + w in <x, y, z, w> order
- // (i.e., w in high order element of vector)
- /////////////////////////////
- /////////////////////////////
- // These classes are intentionally minimal right now. If you need additional
- // functionality, please contact someone with SSE experience (e.g., Falcon or
- // Huseby).
- /////////////////////////////
- #include "llquaternion.h"
- class LLQuaternion2
- {
- public:
- //////////////////////////
- // Ctors
- //////////////////////////
-
- // Ctor
- LLQuaternion2() {}
- // Ctor from LLQuaternion
- explicit LLQuaternion2( const class LLQuaternion& quat );
- //////////////////////////
- // Get/Set
- //////////////////////////
- // Load from an LLQuaternion
- inline void operator=( const LLQuaternion& quat )
- {
- mQ.loadua( quat.mQ );
- }
- // Return the internal LLVector4a representation of the quaternion
- inline const LLVector4a& getVector4a() const;
- inline LLVector4a& getVector4aRw();
- /////////////////////////
- // Quaternion modification
- /////////////////////////
-
- // Set this quaternion to the conjugate of src
- inline void setConjugate(const LLQuaternion2& src);
- // Renormalizes the quaternion. Assumes it has nonzero length.
- inline void normalize();
- // Quantize this quaternion to 8 bit precision
- inline void quantize8();
- // Quantize this quaternion to 16 bit precision
- inline void quantize16();
- /////////////////////////
- // Quaternion inspection
- /////////////////////////
- // Return true if this quaternion is equal to 'rhs'.
- // Note! Quaternions exhibit "double-cover", so any rotation has two equally valid
- // quaternion representations and they will NOT compare equal.
- inline bool equals(const LLQuaternion2& rhs, F32 tolerance = F_APPROXIMATELY_ZERO ) const;
- // Return true if all components are finite and the quaternion is normalized
- inline bool isOkRotation() const;
- protected:
- LLVector4a mQ;
- };
- #endif