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https://github.com/RobTillaart/Arduino.git
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77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
#pragma once
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//
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// FILE: map2colour.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.4
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// PURPOSE: Arduino library for mapping a float to colour spectrum
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// URL: https://github.com/RobTillaart/map2colour
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//
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#include "Arduino.h"
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#define MAP2COLOUR_LIB_VERSION (F("0.1.4"))
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// https://www.w3.org/wiki/CSS/Properties/color/keywords
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#define M2C_BLACK 0x00000000
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#define M2C_SILVER 0x00C0C0C0
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#define M2C_GRAY 0x00808080
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#define M2C_WHITE 0x00FFFFFF
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#define M2C_MAROON 0x00800000
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#define M2C_RED 0x00FF0000
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#define M2C_PURPLE 0x00800080
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#define M2C_FUCHSIA 0x00FF00FF
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#define M2C_GREEN 0x00008000
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#define M2C_LIME 0x000FF000
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#define M2C_OLIVE 0x00808000
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#define M2C_YELLOW 0x00FFFF00
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#define M2C_NAVY 0x00000080
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#define M2C_BLUE 0x000000FF
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#define M2C_TEAL 0x00008080
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#define M2C_AQUA 0x0000FFFF
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class map2colour
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{
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public:
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map2colour();
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// values is an array of 7 values in ascending order
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bool begin(float * values, uint32_t * colourMap = NULL);
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uint32_t map2RGB(float value);
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uint16_t map2_565(float value);
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protected:
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uint8_t _size = 7;
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float * _values;
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// default colours, split up per channel for performance.
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uint8_t _Red[7] = { 0x00, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0xFF };
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uint8_t _Green[7] = { 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x00, 0xFF };
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uint8_t _Blue[7] = { 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF };
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};
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/////////////////////////////////////////////////////////////////////////
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//
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// DERIVED CLASS
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//
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// FASTER + MORE RAM
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//
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class map2colourFast : public map2colour
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{
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public:
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map2colourFast();
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// values is an array of 7 values in ascending order
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bool begin(float * values, uint32_t * colourMap = NULL);
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uint32_t map2RGB(float value);
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uint16_t map2_565(float value);
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private:
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float divFactor[6];
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};
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// -- END OF FILE --
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