Second Life viewer sources 1.13.2.12

1 files changed, 232 insertions, 0 deletions

diff --git a/linden/indra/llmath/v3math.cpp b/linden/indra/llmath/v3math.cpp
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+++ b/linden/indra/llmath/v3math.cpp
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+/** 
+ * @file v3math.cpp
+ * @brief LLVector3 class implementation.
+ *
+ * Copyright (c) 2000-2007, Linden Research, Inc.
+ * 
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ */
+
+#include "linden_common.h"
+
+#include "v3math.h"
+
+//#include "vmath.h"
+#include "v4math.h"
+#include "m4math.h"
+#include "m3math.h"
+#include "llquaternion.h"
+#include "llquantize.h"
+#include "v3dmath.h"
+
+// LLVector3
+// WARNING: Don't use these for global const definitions!
+// For example: 
+//              const LLQuaternion(0.5f * F_PI, LLVector3::zero);
+// at the top of a *.cpp file might not give you what you think.
+const LLVector3 LLVector3::zero(0,0,0);
+const LLVector3 LLVector3::x_axis(1.f, 0, 0);
+const LLVector3 LLVector3::y_axis(0, 1.f, 0);
+const LLVector3 LLVector3::z_axis(0, 0, 1.f);
+const LLVector3 LLVector3::x_axis_neg(-1.f, 0, 0);
+const LLVector3 LLVector3::y_axis_neg(0, -1.f, 0);
+const LLVector3 LLVector3::z_axis_neg(0, 0, -1.f);
+const LLVector3 LLVector3::all_one(1.f,1.f,1.f);
+
+
+// Clamps each values to range (min,max).
+// Returns TRUE if data changed.
+BOOL LLVector3::clamp(F32 min, F32 max)
+{
+        BOOL ret = FALSE;
+
+        if (mV[0] < min) { mV[0] = min; ret = TRUE; }
+        if (mV[1] < min) { mV[1] = min; ret = TRUE; }
+        if (mV[2] < min) { mV[2] = min; ret = TRUE; }
+
+        if (mV[0] > max) { mV[0] = max; ret = TRUE; }
+        if (mV[1] > max) { mV[1] = max; ret = TRUE; }
+        if (mV[2] > max) { mV[2] = max; ret = TRUE; }
+
+        return ret;
+}
+
+// Sets all values to absolute value of their original values
+// Returns TRUE if data changed
+BOOL LLVector3::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; }
+
+        return ret;
+}
+
+// Quatizations
+void    LLVector3::quantize16(F32 lowerxy, F32 upperxy, F32 lowerz, F32 upperz)
+{
+        F32 x = mV[VX];
+        F32 y = mV[VY];
+        F32 z = mV[VZ];
+
+        x = U16_to_F32(F32_to_U16(x, lowerxy, upperxy), lowerxy, upperxy);
+        y = U16_to_F32(F32_to_U16(y, lowerxy, upperxy), lowerxy, upperxy);
+        z = U16_to_F32(F32_to_U16(z, lowerz,  upperz),  lowerz,  upperz);
+
+        mV[VX] = x;
+        mV[VY] = y;
+        mV[VZ] = z;
+}
+
+void    LLVector3::quantize8(F32 lowerxy, F32 upperxy, F32 lowerz, F32 upperz)
+{
+        mV[VX] = U8_to_F32(F32_to_U8(mV[VX], lowerxy, upperxy), lowerxy, upperxy);;
+        mV[VY] = U8_to_F32(F32_to_U8(mV[VY], lowerxy, upperxy), lowerxy, upperxy);
+        mV[VZ] = U8_to_F32(F32_to_U8(mV[VZ], lowerz, upperz), lowerz, upperz);
+}
+
+
+void    LLVector3::snap(S32 sig_digits)
+{
+        mV[VX] = snap_to_sig_figs(mV[VX], sig_digits);
+        mV[VY] = snap_to_sig_figs(mV[VY], sig_digits);
+        mV[VZ] = snap_to_sig_figs(mV[VZ], sig_digits);
+}
+
+
+std::ostream& operator<<(std::ostream& s, const LLVector3 &a) 
+{
+        s << "{ " << a.mV[VX] << ", " << a.mV[VY] << ", " << a.mV[VZ] << " }";
+        return s;
+}
+
+
+const LLVector3&        LLVector3::rotVec(const LLMatrix3 &mat)
+{
+        *this = *this * mat;
+        return *this;
+}
+
+const LLVector3&        LLVector3::rotVec(const LLQuaternion &q)
+{
+        *this = *this * q;
+        return *this;
+}
+
+const LLVector3&        LLVector3::rotVec(F32 angle, const LLVector3 &vec)
+{
+        if ( !vec.isExactlyZero() && angle )
+        {
+                *this = *this * LLMatrix3(angle, vec);
+        }
+        return *this;
+}
+
+const LLVector3&        LLVector3::rotVec(F32 angle, F32 x, F32 y, F32 z)
+{
+        LLVector3 vec(x, y, z);
+        if ( !vec.isExactlyZero() && angle )
+        {
+                *this = *this * LLMatrix3(angle, vec);
+        }
+        return *this;
+}
+
+const LLVector3&        LLVector3::scaleVec(const LLVector3& vec)
+{
+        mV[VX] *= vec.mV[VX];
+        mV[VY] *= vec.mV[VY];
+        mV[VZ] *= vec.mV[VZ];
+
+        return *this;
+}
+
+LLVector3                       LLVector3::scaledVec(const LLVector3& vec) const
+{
+        LLVector3 ret = LLVector3(*this);
+        ret.scaleVec(vec);
+        return ret;
+}
+
+const LLVector3&        LLVector3::setVec(const LLVector3d &vec)
+{
+        mV[0] = (F32)vec.mdV[0];
+        mV[1] = (F32)vec.mdV[1];
+        mV[2] = (F32)vec.mdV[2];
+        return (*this);
+}
+
+const LLVector3&        LLVector3::setVec(const LLVector4 &vec)
+{
+        mV[0] = vec.mV[0];
+        mV[1] = vec.mV[1];
+        mV[2] = vec.mV[2];
+        return (*this);
+}
+
+LLVector3::LLVector3(const LLVector3d &vec)
+{
+        mV[VX] = (F32)vec.mdV[VX];
+        mV[VY] = (F32)vec.mdV[VY];
+        mV[VZ] = (F32)vec.mdV[VZ];
+}
+
+LLVector3::LLVector3(const LLVector4 &vec)
+{
+        mV[VX] = (F32)vec.mV[VX];
+        mV[VY] = (F32)vec.mV[VY];
+        mV[VZ] = (F32)vec.mV[VZ];
+}
+
+const LLVector3& operator*=(LLVector3 &a, const LLQuaternion &rot)
+{
+    const F32 rw = - rot.mQ[VX] * a.mV[VX] - rot.mQ[VY] * a.mV[VY] - rot.mQ[VZ] * a.mV[VZ];
+    const F32 rx =   rot.mQ[VW] * a.mV[VX] + rot.mQ[VY] * a.mV[VZ] - rot.mQ[VZ] * a.mV[VY];
+    const F32 ry =   rot.mQ[VW] * a.mV[VY] + rot.mQ[VZ] * a.mV[VX] - rot.mQ[VX] * a.mV[VZ];
+    const F32 rz =   rot.mQ[VW] * a.mV[VZ] + rot.mQ[VX] * a.mV[VY] - rot.mQ[VY] * a.mV[VX];
+        
+    a.mV[VX] = - rw * rot.mQ[VX] +  rx * rot.mQ[VW] - ry * rot.mQ[VZ] + rz * rot.mQ[VY];
+    a.mV[VY] = - rw * rot.mQ[VY] +  ry * rot.mQ[VW] - rz * rot.mQ[VX] + rx * rot.mQ[VZ];
+    a.mV[VZ] = - rw * rot.mQ[VZ] +  rz * rot.mQ[VW] - rx * rot.mQ[VY] + ry * rot.mQ[VX];
+
+        return a;
+}
+
+// static 
+BOOL LLVector3::parseVector3(const char* buf, LLVector3* value)
+{
+        if( buf == NULL || buf[0] == '\0' || value == NULL)
+        {
+                return FALSE;
+        }
+
+        LLVector3 v;
+        S32 count = sscanf( buf, "%f %f %f", v.mV + 0, v.mV + 1, v.mV + 2 );
+        if( 3 == count )
+        {
+                value->setVec( v );
+                return TRUE;
+        }
+
+        return FALSE;
+}