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 a68028d74a..bee6fc3ee8 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]);
+}
+
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