138 lines
3.7 KiB
C++
138 lines
3.7 KiB
C++
#pragma once
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#ifndef TCG_PIXEL_H
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#define TCG_PIXEL_H
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// tcg includes
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#include "pixel_ops.h"
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// STD includes
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#include <limits>
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namespace tcg {
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//***********************************************************
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// Tcg Pixel Types definition
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//***********************************************************
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template <typename Chan, typename pixel_category>
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struct Pixel;
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template <typename Chan>
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struct Pixel<Chan, grayscale_pixel_tag> {
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typedef grayscale_pixel_tag pixel_category;
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typedef Chan channel_type;
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public:
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channel_type l;
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public:
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Pixel() : l() {}
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Pixel(channel_type _l) : l(_l) {}
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bool operator==(const Pixel &other) const { return l == other.l; }
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bool operator!=(const Pixel &other) const { return l != other.l; }
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};
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template <typename Chan>
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struct Pixel<Chan, rgb_pixel_tag> {
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typedef rgb_pixel_tag pixel_category;
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typedef Chan channel_type;
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public:
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channel_type r, g, b;
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public:
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Pixel() : r(), g(), b() {}
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Pixel(channel_type _r, channel_type _g, channel_type _b)
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: r(_r), g(_g), b(_b) {}
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bool operator==(const Pixel &other) const {
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return (r == other.r) && (g == other.g) && (g == other.g);
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}
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bool operator!=(const Pixel &other) const {
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return (r != other.r) || (g != other.g) || (g != other.g);
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}
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};
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template <typename Chan>
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struct Pixel<Chan, rgbm_pixel_tag> {
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typedef rgbm_pixel_tag pixel_category;
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typedef Chan channel_type;
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public:
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channel_type r, g, b, m;
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public:
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Pixel() : r(), g(), b(), m() {}
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Pixel(channel_type _r, channel_type _g, channel_type _b, channel_type _m)
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: r(_r), g(_g), b(_b), m(_m) {}
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bool operator==(const Pixel &other) const {
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return (r == other.r) && (g == other.g) && (g == other.g) && (m == other.m);
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}
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bool operator!=(const Pixel &other) const {
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return (r != other.r) || (g != other.g) || (g != other.g) || (m != other.m);
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}
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};
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//***********************************************************
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// Tcg Pixel traits
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//***********************************************************
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namespace pixel_ops {
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template <typename Chan>
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struct pixel_traits<Pixel<Chan, grayscale_pixel_tag>, grayscale_pixel_tag> {
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typedef Pixel<Chan, grayscale_pixel_tag> pixel_type;
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typedef grayscale_pixel_tag pixel_category;
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typedef Chan channel_type;
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enum { channels_count = 1 };
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static channel_type max_channel_value() {
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return (std::numeric_limits<channel_type>::max)();
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}
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static channel_type l(const pixel_type &pix) { return pix.l; }
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static channel_type &l(pixel_type &pix) { return pix.l; }
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};
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template <typename Chan>
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struct pixel_traits<Pixel<Chan, rgb_pixel_tag>, rgb_pixel_tag> {
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typedef Pixel<Chan, rgb_pixel_tag> pixel_type;
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typedef rgb_pixel_tag pixel_category;
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typedef Chan channel_type;
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enum { channels_count = 3 };
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static channel_type max_channel_value() {
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return (std::numeric_limits<channel_type>::max)();
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}
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static channel_type r(const pixel_type &pix) { return pix.r; }
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static channel_type &r(pixel_type &pix) { return pix.r; }
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static channel_type g(const pixel_type &pix) { return pix.g; }
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static channel_type &g(pixel_type &pix) { return pix.g; }
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static channel_type b(const pixel_type &pix) { return pix.b; }
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static channel_type &b(pixel_type &pix) { return pix.b; }
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};
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template <typename Chan>
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struct pixel_traits<Pixel<Chan, rgbm_pixel_tag>, rgbm_pixel_tag>
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: public pixel_traits<Pixel<Chan, rgb_pixel_tag>, rgb_pixel_tag> {
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typedef Pixel<Chan, rgbm_pixel_tag> pixel_type;
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typedef rgbm_pixel_tag pixel_category;
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typedef Chan channel_type;
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enum { channels_count = 4 };
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static channel_type m(const pixel_type &pix) { return pix.m; }
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static channel_type &m(pixel_type &pix) { return pix.m; }
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};
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}
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} // namespace tcg::pixel_ops
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#endif // TCG_PIXEL_H
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