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+/*
+ * LLCalc.h
+ * SecondLife
+ *
+ * Created by Aimee Walton on 28/09/2008.
+ * Copyright 2008 Aimee Walton.
+ *
+ */
+
+#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