diff options
Diffstat (limited to 'indra/llmath/v2math.cpp')
-rw-r--r-- | indra/llmath/v2math.cpp | 252 |
1 files changed, 126 insertions, 126 deletions
diff --git a/indra/llmath/v2math.cpp b/indra/llmath/v2math.cpp index 22b37628d8..fd71c337fa 100644 --- a/indra/llmath/v2math.cpp +++ b/indra/llmath/v2math.cpp @@ -1,126 +1,126 @@ -/** - * @file v2math.cpp - * @brief LLVector2 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 "v2math.h" -#include "v3math.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 (F32) sqrt( 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 ); -} - -LLSD LLVector2::getValue() const -{ - LLSD ret; - ret[0] = mV[0]; - ret[1] = mV[1]; - return ret; -} - -void LLVector2::setValue(const LLSD& sd) -{ - mV[0] = (F32) sd[0].asReal(); - mV[1] = (F32) sd[1].asReal(); -} - +/**
+ * @file v2math.cpp
+ * @brief LLVector2 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 "v2math.h"
+#include "v3math.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 (F32) sqrt( 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 );
+}
+
+LLSD LLVector2::getValue() const
+{
+ LLSD ret;
+ ret[0] = mV[0];
+ ret[1] = mV[1];
+ return ret;
+}
+
+void LLVector2::setValue(const LLSD& sd)
+{
+ mV[0] = (F32) sd[0].asReal();
+ mV[1] = (F32) sd[1].asReal();
+}
+
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