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/*
* LLCalc.h
* Copyright 2008 Aimee Walton.
* $LicenseInfo:firstyear=2008&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2008, 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
* $/LicenseInfo$
*
*/
#ifndef LL_CALC_H
#define LL_CALC_H
#include <map>
#include <string>
class LLCalc
{
public:
LLCalc();
~LLCalc();
// Variable name constants
static const char* X_POS;
static const char* Y_POS;
static const char* Z_POS;
static const char* X_SCALE;
static const char* Y_SCALE;
static const char* Z_SCALE;
static const char* X_ROT;
static const char* Y_ROT;
static const char* Z_ROT;
static const char* HOLLOW;
static const char* CUT_BEGIN;
static const char* CUT_END;
static const char* PATH_BEGIN;
static const char* PATH_END;
static const char* TWIST_BEGIN;
static const char* TWIST_END;
static const char* X_SHEAR;
static const char* Y_SHEAR;
static const char* X_TAPER;
static const char* Y_TAPER;
static const char* RADIUS_OFFSET;
static const char* REVOLUTIONS;
static const char* SKEW;
static const char* X_HOLE;
static const char* Y_HOLE;
static const char* TEX_U_SCALE;
static const char* TEX_V_SCALE;
static const char* TEX_U_OFFSET;
static const char* TEX_V_OFFSET;
static const char* TEX_ROTATION;
static const char* TEX_TRANSPARENCY;
static const char* TEX_GLOW;
void setVar(const std::string& name, const F32& value);
void clearVar(const std::string& name);
void clearAllVariables();
// void updateVariables(LLSD& vars);
bool evalString(const std::string& expression, F32& result);
std::string::size_type getLastErrorPos() { return mLastErrorPos; }
static LLCalc* getInstance();
static void cleanUp();
typedef std::map<std::string, F32> calc_map_t;
private:
std::string::size_type mLastErrorPos;
calc_map_t mConstants;
calc_map_t mVariables;
// *TODO: Add support for storing user defined variables, and stored functions.
// Will need UI work, and a means to save them between sessions.
// calc_map_t mUserVariables;
// "There shall be only one"
static LLCalc* sInstance;
};
#endif // LL_CALC_H
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