Something went wrong. Try again.
OpenMW is an open implementation of the Morrowind engine
Something went wrong. Try again.
2.0 kB · 73 lines
C++
at master
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374#include "color.hpp"
#include <algorithm>#include <array>#include <charconv>#include <sstream>#include <system_error>
#include <components/sceneutil/util.hpp>
namespace Misc{ Color::Color(float r, float g, float b, float a) : mValue(std::clamp(r, 0.f, 1.f), std::clamp(g, 0.f, 1.f), std::clamp(b, 0.f, 1.f), std::clamp(a, 0.f, 1.f)) { }
std::string Color::toString() const { std::ostringstream ss; ss << "(" << r() << ", " << g() << ", " << b() << ", " << a() << ')'; return ss.str(); }
Color Color::fromHex(std::string_view hex) { if (hex.size() != 6) throw std::logic_error(std::string("Invalid hex color: ") += hex); Color col; col.mValue.a() = 1; for (unsigned i = 0; i < 3; i++) { auto sub = hex.substr(i * 2, 2); unsigned char v = 0; auto [_, ec] = std::from_chars(sub.data(), sub.data() + sub.size(), v, 16); if (ec != std::errc()) throw std::logic_error(std::string("Invalid hex color: ") += hex); col.mValue[i] = v / 255.0f; } return col; }
Color Color::fromRGB(unsigned int value) { return Color(SceneUtil::colourFromRGB(value)); }
Color Color::fromVec(osg::Vec4f value) { return Color(std::move(value)); }
std::string Color::toHex() const { std::string result(6, '0'); for (unsigned i = 0; i < 3; i++) { int b = static_cast<int>(mValue[i] * 255.0f); char* start = result.data() + i * 2; if (b < 16) start++; auto [_, ec] = std::to_chars(start, result.data() + (i + 1) * 2, b, 16); if (ec != std::errc()) throw std::logic_error("Error when converting number to base 16"); } return result; }
bool operator==(const Color& l, const Color& r) { return l.mValue == r.mValue; }}