v3dmath.cpp
上传用户:king477883
上传日期:2021-03-01
资源大小:9553k
文件大小:4k
- /**
- * @file v3dmath.cpp
- * @brief LLVector3d class implementation.
- *
- * $LicenseInfo:firstyear=2000&license=viewergpl$
- *
- * Copyright (c) 2000-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * 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://secondlifegrid.net/programs/open_source/licensing/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://secondlifegrid.net/programs/open_source/licensing/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.
- * $/LicenseInfo$
- */
- #include "linden_common.h"
- //#include <sstream> // gcc 2.95.2 doesn't support sstream
- #include "v3dmath.h"
- //#include "vmath.h"
- #include "v4math.h"
- #include "m4math.h"
- #include "m3math.h"
- #include "llquaternion.h"
- #include "llquantize.h"
- // LLVector3d
- // WARNING: Don't use these for global const definitions!
- // For example:
- // const LLQuaternion(0.5f * F_PI, LLVector3d::zero);
- // at the top of a *.cpp file might not give you what you think.
- const LLVector3d LLVector3d::zero(0,0,0);
- const LLVector3d LLVector3d::x_axis(1, 0, 0);
- const LLVector3d LLVector3d::y_axis(0, 1, 0);
- const LLVector3d LLVector3d::z_axis(0, 0, 1);
- const LLVector3d LLVector3d::x_axis_neg(-1, 0, 0);
- const LLVector3d LLVector3d::y_axis_neg(0, -1, 0);
- const LLVector3d LLVector3d::z_axis_neg(0, 0, -1);
- // Clamps each values to range (min,max).
- // Returns TRUE if data changed.
- BOOL LLVector3d::clamp(F64 min, F64 max)
- {
- BOOL ret = FALSE;
- if (mdV[0] < min) { mdV[0] = min; ret = TRUE; }
- if (mdV[1] < min) { mdV[1] = min; ret = TRUE; }
- if (mdV[2] < min) { mdV[2] = min; ret = TRUE; }
- if (mdV[0] > max) { mdV[0] = max; ret = TRUE; }
- if (mdV[1] > max) { mdV[1] = max; ret = TRUE; }
- if (mdV[2] > max) { mdV[2] = max; ret = TRUE; }
- return ret;
- }
- // Sets all values to absolute value of their original values
- // Returns TRUE if data changed
- BOOL LLVector3d::abs()
- {
- BOOL ret = FALSE;
- if (mdV[0] < 0.0) { mdV[0] = -mdV[0]; ret = TRUE; }
- if (mdV[1] < 0.0) { mdV[1] = -mdV[1]; ret = TRUE; }
- if (mdV[2] < 0.0) { mdV[2] = -mdV[2]; ret = TRUE; }
- return ret;
- }
- std::ostream& operator<<(std::ostream& s, const LLVector3d &a)
- {
- s << "{ " << a.mdV[VX] << ", " << a.mdV[VY] << ", " << a.mdV[VZ] << " }";
- return s;
- }
- const LLVector3d& LLVector3d::operator=(const LLVector4 &a)
- {
- mdV[0] = a.mV[0];
- mdV[1] = a.mV[1];
- mdV[2] = a.mV[2];
- return *this;
- }
- const LLVector3d& LLVector3d::rotVec(const LLMatrix3 &mat)
- {
- *this = *this * mat;
- return *this;
- }
- const LLVector3d& LLVector3d::rotVec(const LLQuaternion &q)
- {
- *this = *this * q;
- return *this;
- }
- const LLVector3d& LLVector3d::rotVec(F64 angle, const LLVector3d &vec)
- {
- if ( !vec.isExactlyZero() && angle )
- {
- *this = *this * LLMatrix3((F32)angle, vec);
- }
- return *this;
- }
- const LLVector3d& LLVector3d::rotVec(F64 angle, F64 x, F64 y, F64 z)
- {
- LLVector3d vec(x, y, z);
- if ( !vec.isExactlyZero() && angle )
- {
- *this = *this * LLMatrix3((F32)angle, vec);
- }
- return *this;
- }
- BOOL LLVector3d::parseVector3d(const std::string& buf, LLVector3d* value)
- {
- if( buf.empty() || value == NULL)
- {
- return FALSE;
- }
- LLVector3d v;
- S32 count = sscanf( buf.c_str(), "%lf %lf %lf", v.mdV + 0, v.mdV + 1, v.mdV + 2 );
- if( 3 == count )
- {
- value->setVec( v );
- return TRUE;
- }
- return FALSE;
- }