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Diffstat (limited to 'agg/inc/agg_gamma_functions.h')
-rwxr-xr-x | agg/inc/agg_gamma_functions.h | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/agg/inc/agg_gamma_functions.h b/agg/inc/agg_gamma_functions.h deleted file mode 100755 index 646d3fe..0000000 --- a/agg/inc/agg_gamma_functions.h +++ /dev/null @@ -1,123 +0,0 @@ -//---------------------------------------------------------------------------- -// Anti-Grain Geometry - Version 2.3 -// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com) -// -// Permission to copy, use, modify, sell and distribute this software -// is granted provided this copyright notice appears in all copies. -// This software is provided "as is" without express or implied -// warranty, and with no claim as to its suitability for any purpose. -// -//---------------------------------------------------------------------------- -// Contact: mcseem@antigrain.com -// mcseemagg@yahoo.com -// http://www.antigrain.com -//---------------------------------------------------------------------------- - -#ifndef AGG_GAMMA_FUNCTIONS_INCLUDED -#define AGG_GAMMA_FUNCTIONS_INCLUDED - -#include <math.h> -#include "agg_basics.h" - -namespace agg -{ - //===============================================================gamma_none - struct gamma_none - { - double operator()(double x) const { return x; } - }; - - - //==============================================================gamma_power - class gamma_power - { - public: - gamma_power() : m_gamma(1.0) {} - gamma_power(double g) : m_gamma(g) {} - - void gamma(double g) { m_gamma = g; } - double gamma() const { return m_gamma; } - - double operator() (double x) const - { - return pow(x, m_gamma); - } - - private: - double m_gamma; - }; - - - //==========================================================gamma_threshold - class gamma_threshold - { - public: - gamma_threshold() : m_threshold(0.5) {} - gamma_threshold(double t) : m_threshold(t) {} - - void threshold(double t) { m_threshold = t; } - double threshold() const { return m_threshold; } - - double operator() (double x) const - { - return (x < m_threshold) ? 0.0 : 1.0; - } - - private: - double m_threshold; - }; - - - //============================================================gamma_linear - class gamma_linear - { - public: - gamma_linear() : m_start(0.0), m_end(1.0) {} - gamma_linear(double s, double e) : m_start(s), m_end(e) {} - - void set(double s, double e) { m_start = s; m_end = e; } - void start(double s) { m_start = s; } - void end(double e) { m_end = e; } - double start() const { return m_start; } - double end() const { return m_end; } - - double operator() (double x) const - { - if(x < m_start) return 0.0; - if(x > m_end) return 1.0; - return (x - m_start) / (m_end - m_start); - } - - private: - double m_start; - double m_end; - }; - - - //==========================================================gamma_multiply - class gamma_multiply - { - public: - gamma_multiply() : m_mul(1.0) {} - gamma_multiply(double v) : m_mul(v) {} - - void value(double v) { m_mul = v; } - double value() const { return m_mul; } - - double operator() (double x) const - { - double y = x * m_mul; - if(y > 1.0) y = 1.0; - return y; - } - - private: - double m_mul; - }; - -} - -#endif - - - |