From 7772f8871348b7b52cb0a478bb76df68d8799a07 Mon Sep 17 00:00:00 2001 From: Hop311 Date: Fri, 8 Sep 2023 17:12:22 +0100 Subject: More refactoring and duplicate code removal --- src/openvic-simulation/types/Colour.hpp | 36 +++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 src/openvic-simulation/types/Colour.hpp (limited to 'src/openvic-simulation/types/Colour.hpp') diff --git a/src/openvic-simulation/types/Colour.hpp b/src/openvic-simulation/types/Colour.hpp new file mode 100644 index 0000000..01f3852 --- /dev/null +++ b/src/openvic-simulation/types/Colour.hpp @@ -0,0 +1,36 @@ +#pragma once + +#include +#include +#include +#include +#include + +namespace OpenVic { + // Represents a 24-bit RGB integer OR a 32-bit ARGB integer + using colour_t = uint32_t; + /* When colour_t is used as an identifier, NULL_COLOUR is disallowed + * and should be reserved as an error value. + * When colour_t is used in a purely graphical context, NULL_COLOUR + * should be allowed. + */ + static constexpr colour_t NULL_COLOUR = 0, FULL_COLOUR = 0xFF, MAX_COLOUR_RGB = 0xFFFFFF; + constexpr colour_t float_to_colour_byte(float f, float min = 0.0f, float max = 1.0f) { + return static_cast(std::clamp(min + f * (max - min), min, max) * 255.0f); + } + constexpr colour_t fraction_to_colour_byte(int n, int d, float min = 0.0f, float max = 1.0f) { + return float_to_colour_byte(static_cast(n) / static_cast(d), min, max); + } + constexpr colour_t float_to_alpha_value(float a) { + return float_to_colour_byte(a) << 24; + } + constexpr float colour_byte_to_float(colour_t colour) { + return std::clamp(static_cast(colour) / 255.0f, 0.0f, 1.0f); + } + + inline std::string colour_to_hex_string(colour_t colour) { + std::ostringstream stream; + stream << std::hex << std::setfill('0') << std::setw(6) << colour; + return stream.str(); + } +} -- cgit v1.2.3-56-ga3b1