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Big templatization. Fix for interpolation.

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This commit is contained in:
Ian Gulliver
2017-08-10 15:24:23 -07:00
parent c9024d3d63
commit a2c9eeb66b
11 changed files with 247 additions and 234 deletions
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45
color.h
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@@ -2,23 +2,48 @@
#include <array>
#include <cstdint>
#include <iomanip>
#include <iostream>
#include "intmath.h"
constexpr uint32_t kNumColors = UINT16_MAX;
constexpr uint32_t kMaxColor = UINT16_MAX;
// 32-bit for compiler convenience, but values are 16-bit
struct Color : public std::array<uint32_t, 3> {
constexpr uint32_t Difference(const Color& other) const;
template <uint32_t C>
struct Color : public std::array<uint32_t, C> {
constexpr uint32_t Difference(const Color<C>& other) const;
constexpr Color<C> Interpolate(const Color<C>& other, uint32_t mul, uint32_t div) const;
};
constexpr uint32_t Color::Difference(const Color& other) const {
return (
AbsDiff(this->at(0), other.at(0)) +
AbsDiff(this->at(1), other.at(1)) +
AbsDiff(this->at(2), other.at(2))
);
struct RgbColor : public Color<3> {};
template <uint32_t C>
constexpr uint32_t Color<C>::Difference(const Color<C>& other) const {
uint32_t diff = 0;
for (uint32_t c = 0; c < C; ++c) {
diff += AbsDiff(this->at(c), other.at(c));
}
return diff;
}
std::ostream& operator<<(std::ostream& os, const Color& color);
template <uint32_t C>
constexpr Color<C> Color<C>::Interpolate(const Color<C>& other, uint32_t mul, uint32_t div) const {
Color<C> ret;
for (uint32_t c = 0; c < C; ++c) {
ret.at(c) = ::Interpolate(this->at(c), other.at(c), mul, div);
}
return ret;
}
template <uint32_t C>
std::ostream& operator<<(std::ostream& os, const Color<C>& color) {
os << std::hex << std::setfill('0') << "Color(";
for (uint32_t c = 0; c < C; ++c) {
os << "0x" << std::setw(4) << color.at(0);
if (c < C - 1) {
os << ", ";
}
}
return os << ")" << std::dec;
}