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author | Hop311 <Hop3114@gmail.com> | 2023-09-09 23:49:54 +0200 |
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committer | GitHub <noreply@github.com> | 2023-09-09 23:49:54 +0200 |
commit | 6278a35f4704574933464700026d8deb997da5c1 (patch) | |
tree | eb36a9b030b263d825eb93638e64deb0dbd38a78 /src/openvic-simulation/types/Colour.hpp | |
parent | bec619fc8f554cb075fcef2428f3b6bdb5e88e82 (diff) | |
parent | 3d7fbd9b376811ca0ed226fa78bcc8b6279ba8dc (diff) |
Merge pull request #14 from OpenVicProject/dataloading
Dataloading scaffolding + basic culture and pop history loading
Diffstat (limited to 'src/openvic-simulation/types/Colour.hpp')
-rw-r--r-- | src/openvic-simulation/types/Colour.hpp | 36 |
1 files changed, 36 insertions, 0 deletions
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 <algorithm> +#include <cstdint> +#include <iomanip> +#include <sstream> +#include <string> + +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<colour_t>(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<float>(n) / static_cast<float>(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<float>(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(); + } +} |