diff options
Diffstat (limited to 'indra/llmath/v4math.cpp')
| -rw-r--r-- | indra/llmath/v4math.cpp | 240 |
1 files changed, 120 insertions, 120 deletions
diff --git a/indra/llmath/v4math.cpp b/indra/llmath/v4math.cpp index bee6fc3ee8..0aa6eb09c3 100644 --- a/indra/llmath/v4math.cpp +++ b/indra/llmath/v4math.cpp @@ -1,120 +1,120 @@ -/**
- * @file v4math.cpp
- * @brief LLVector4 class implementation.
- *
- * $LicenseInfo:firstyear=2000&license=viewerlgpl$
- * 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
- * $/LicenseInfo$
- */
-
-#include "linden_common.h"
-
-//#include "vmath.h"
-#include "v3math.h"
-#include "v4math.h"
-#include "m4math.h"
-#include "m3math.h"
-#include "llquaternion.h"
-
-// LLVector4
-
-// Axis-Angle rotations
-const LLVector4& LLVector4::rotVec(const LLMatrix4 &mat)
-{
- *this = *this * mat;
- return *this;
-}
-
-const LLVector4& LLVector4::rotVec(const LLQuaternion &q)
-{
- *this = *this * q;
- return *this;
-}
-
-const LLVector4& LLVector4::scaleVec(const LLVector4& vec)
-{
- mV[VX] *= vec.mV[VX];
- mV[VY] *= vec.mV[VY];
- mV[VZ] *= vec.mV[VZ];
- mV[VW] *= vec.mV[VW];
-
- return *this;
-}
-
-// Sets all values to absolute value of their original values
-// Returns true if data changed
-bool LLVector4::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; }
- if (mV[2] < 0.f) { mV[2] = -mV[2]; ret = true; }
- if (mV[3] < 0.f) { mV[3] = -mV[3]; ret = true; }
-
- return ret;
-}
-
-
-std::ostream& operator<<(std::ostream& s, const LLVector4 &a)
-{
- s << "{ " << a.mV[VX] << ", " << a.mV[VY] << ", " << a.mV[VZ] << ", " << a.mV[VW] << " }";
- return s;
-}
-
-
-// Non-member functions
-
-F32 angle_between( const LLVector4& a, const LLVector4& b )
-{
- LLVector4 an = a;
- LLVector4 bn = b;
- an.normalize();
- bn.normalize();
- F32 cosine = an * bn;
- F32 angle = (cosine >= 1.0f) ? 0.0f :
- (cosine <= -1.0f) ? F_PI :
- acos(cosine);
- return angle;
-}
-
-bool are_parallel(const LLVector4 &a, const LLVector4 &b, F32 epsilon)
-{
- LLVector4 an = a;
- LLVector4 bn = b;
- an.normalize();
- bn.normalize();
- F32 dot = an * bn;
- if ( (1.0f - fabs(dot)) < epsilon)
- return true;
- return false;
-}
-
-
-LLVector3 vec4to3(const LLVector4 &vec)
-{
- return LLVector3( vec.mV[VX], vec.mV[VY], vec.mV[VZ] );
-}
-
-LLVector4 vec3to4(const LLVector3 &vec)
-{
- return LLVector4(vec.mV[VX], vec.mV[VY], vec.mV[VZ]);
-}
-
+/** + * @file v4math.cpp + * @brief LLVector4 class implementation. + * + * $LicenseInfo:firstyear=2000&license=viewerlgpl$ + * 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 + * $/LicenseInfo$ + */ + +#include "linden_common.h" + +//#include "vmath.h" +#include "v3math.h" +#include "v4math.h" +#include "m4math.h" +#include "m3math.h" +#include "llquaternion.h" + +// LLVector4 + +// Axis-Angle rotations +const LLVector4& LLVector4::rotVec(const LLMatrix4 &mat) +{ + *this = *this * mat; + return *this; +} + +const LLVector4& LLVector4::rotVec(const LLQuaternion &q) +{ + *this = *this * q; + return *this; +} + +const LLVector4& LLVector4::scaleVec(const LLVector4& vec) +{ + mV[VX] *= vec.mV[VX]; + mV[VY] *= vec.mV[VY]; + mV[VZ] *= vec.mV[VZ]; + mV[VW] *= vec.mV[VW]; + + return *this; +} + +// Sets all values to absolute value of their original values +// Returns true if data changed +bool LLVector4::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; } + if (mV[2] < 0.f) { mV[2] = -mV[2]; ret = true; } + if (mV[3] < 0.f) { mV[3] = -mV[3]; ret = true; } + + return ret; +} + + +std::ostream& operator<<(std::ostream& s, const LLVector4 &a) +{ + s << "{ " << a.mV[VX] << ", " << a.mV[VY] << ", " << a.mV[VZ] << ", " << a.mV[VW] << " }"; + return s; +} + + +// Non-member functions + +F32 angle_between( const LLVector4& a, const LLVector4& b ) +{ + LLVector4 an = a; + LLVector4 bn = b; + an.normalize(); + bn.normalize(); + F32 cosine = an * bn; + F32 angle = (cosine >= 1.0f) ? 0.0f : + (cosine <= -1.0f) ? F_PI : + acos(cosine); + return angle; +} + +bool are_parallel(const LLVector4 &a, const LLVector4 &b, F32 epsilon) +{ + LLVector4 an = a; + LLVector4 bn = b; + an.normalize(); + bn.normalize(); + F32 dot = an * bn; + if ( (1.0f - fabs(dot)) < epsilon) + return true; + return false; +} + + +LLVector3 vec4to3(const LLVector4 &vec) +{ + return LLVector3( vec.mV[VX], vec.mV[VY], vec.mV[VZ] ); +} + +LLVector4 vec3to4(const LLVector3 &vec) +{ + return LLVector4(vec.mV[VX], vec.mV[VY], vec.mV[VZ]); +} + |