color_scale.h

#pragma once
 
#include "color.h"
#include <vector>
#include <string>
 
#include "lib_begin.h"
 
namespace cgv {
    namespace media {
 
enum ColorScale {
    CS_RED,   
    CS_GREEN, 
    CS_BLUE,  
    CS_GRAY,  
    CS_TEMPERATURE,   
    CS_HUE,           
    CS_HUE_LUMINANCE, 
    CS_NAMED          
};
 
extern CGV_API color<float,RGB> color_scale(double value, ColorScale cs = CS_TEMPERATURE, int polarity = 0);
 
extern CGV_API double color_scale_gamma_mapping(double v, double gamma, bool is_bipolar = false, double window_zero_position = 0.5);
 
extern CGV_API double adjust_zero_position(double value, double window_zero_position);
 
extern CGV_API void register_named_color_scale(const ::std::string& name, const ::std::vector<color<float, RGB>>& samples, bool is_bipolar = false);
 
extern CGV_API std::string get_color_scale_name(ColorScale cs);
 
 
extern CGV_API bool find_color_scale(const std::string& name, ColorScale& cs);
 
extern CGV_API size_t get_named_color_scale_timestamp();
 
extern CGV_API const std::string& get_color_scale_enum_definition(bool include_fixed = true, bool include_named = true, int polarity = 0);
 
extern CGV_API const std::vector<std::string>& query_color_scale_names(int polarity = 0);
 
extern CGV_API const std::vector<color<float, RGB>>& query_named_color_scale(const std::string& name, bool* is_bipolar_ptr = 0);
 
extern CGV_API std::vector<color<float, RGB>> sample_named_color_scale(const std::string& name, size_t nr_samples = 0, bool exact = false);
 
extern CGV_API color<float, RGB> sample_sampled_color_scale(float value, const std::vector<color<float, RGB>>& samples, bool is_bipolar = false);
 
 
    }
}
 
#include <cgv/config/lib_end.h>