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#pragma once
#include <algorithm>
#include <stdint.h>
#include <cstring>
#include <cstdio>
namespace daguerre {
typedef uint32_t hilbert_color;
struct rgb24 {
uint8_t r;
uint8_t g;
uint8_t b;
};
template <class color_t>
static inline void default_overlay(color_t &dest, const color_t &src) {
dest = src;
}
static inline void default_overlay(hilbert_color &dest, const rgb24 &src) {
dest = __euler_encode_color(src.r, src.g, src.b);
}
static inline void default_overlay(rgb24 &dest, const bool &src) {
dest.r = src ? 255 : 0;
dest.g = src ? 255 : 0;
dest.b = src ? 255 : 0;
}
template <class color_t>
class image {
public:
bool delete_buffer_on_destruct;
color_t *buffer;
unsigned width;
unsigned height;
unsigned pitch;//in sizeof(color_t)
image()
: delete_buffer_on_destruct(false), buffer(0), width(0), height(0),
pitch(0) {}
image(unsigned width, unsigned height)
: delete_buffer_on_destruct(true), buffer(new color_t[width * height]),
width(width), height(height), pitch(width) {}
image(
color_t *buffer, unsigned width, unsigned height, unsigned pitch,
bool delete_buffer_on_destruct)
: delete_buffer_on_destruct(delete_buffer_on_destruct), buffer(buffer),
width(width), height(height), pitch(pitch) {}
~image() {
if (delete_buffer_on_destruct && buffer)
delete[] buffer;
}
template <class other_color_t,
void overlay(color_t &, const other_color_t &) = default_overlay>
image(const image<other_color_t> &other)
: delete_buffer_on_destruct(true),
buffer(new color_t[other.width * other.height]), width(other.width),
height(other.height), pitch(other.width) {
overlay_from<other_color_t, overlay>(other, 0, 0, 0, 0, width, height);
}
image(image<color_t> &&other)
: delete_buffer_on_destruct(other.delete_buffer_on_destruct),
buffer(other.buffer), width(other.width), height(other.height),
pitch(other.pitch) {
other.buffer = 0;
}
template <class other_color_t,
void overlay(color_t &, const other_color_t &) = default_overlay>
image<color_t> &operator =(const image<other_color_t> &other) {
if (delete_buffer_on_destruct && buffer)
delete[] buffer;
delete_buffer_on_destruct = true;
width = other.width;
height = other.height;
pitch = width;
buffer = new color_t[width * height];
overlay_from<other_color_t, overlay>(other, 0, 0, 0, 0, width, height);
return *this;
}
image<color_t> &operator =(image<color_t> &&other) {
if (delete_buffer_on_destruct && buffer)
delete[] buffer;
delete_buffer_on_destruct = other.delete_buffer_on_destruct;
buffer = other.buffer;
width = other.width;
height = other.height;
pitch = other.pitch;
other.buffer = 0;
return *this;
}
color_t get(unsigned x, unsigned y) const {
return buffer[y * pitch + x];
}
void set(unsigned x, unsigned y, const color_t &c) {
buffer[y * pitch + x] = c;
}
void copy_from(
const image<color_t> &other, unsigned to_x, unsigned to_y,
unsigned from_x, unsigned from_y, unsigned width, unsigned height) {
color_t *to_start = buffer + pitch * to_y + to_x;
const color_t *from_start = other.buffer + other.pitch * from_y + from_x;
for (unsigned y = 0; y < height; ++y)
std::memcpy(
to_start + pitch * y, from_start + other.pitch * y,
width * sizeof(color_t));
}
template <class other_color_t,
void overlay(color_t &, const other_color_t &) = default_overlay>
void overlay_from(
const image<other_color_t> &other, unsigned to_x, unsigned to_y,
unsigned from_x, unsigned from_y, unsigned width, unsigned height) {
color_t *to_start = buffer + pitch * to_y + to_x;
const other_color_t *from_start =
other.buffer + other.pitch * from_y + from_x;
for (unsigned y = 0; y < height; ++y)
for (unsigned x = 0; x < width; ++x)
overlay(to_start[pitch * y + x], from_start[other.pitch * y + x]);
}
};
template <class color_t>
void swap(image<color_t> &a, image<color_t> &b) {
std::swap(a.delete_buffer_on_destruct, b.delete_buffer_on_destruct);
std::swap(a.buffer, b.buffer);
std::swap(a.width, b.width);
std::swap(a.height, b.height);
std::swap(a.pitch, b.pitch);
}
image<hilbert_color> get_hilbert_framebuffer();
bool try_load_ppm(std::FILE *input, image<rgb24> &into);
static inline bool try_load_ppm(const char *path, image<rgb24> &into) {
std::FILE *f = std::fopen(path, "r");
if (!f)
return false;
bool success = try_load_ppm(f, into);
std::fclose(f);
return success;
}
//TODO: unicode
template <class color_t>
class fixed_bitmap_font {
public:
unsigned width;
unsigned height;
image<color_t> glyphs[128];
template <class target_color_t,
void overlay(target_color_t &dest, const color_t &src) = default_overlay>
void overlay_text(
image<target_color_t> &target, unsigned x,
unsigned y, const char *text) const {
while (1) {
uint8_t ch = (uint8_t)*text;
if (ch == 0)
return;
if (ch < 128) {
target.template overlay_from<color_t, overlay>(
glyphs[ch], x, y, 0, 0, width, height);
x += width;
}
++text;
}
}
};
bool try_load_psf(std::FILE *input, fixed_bitmap_font<bool> &into);
static inline bool try_load_psf(
const char *path, fixed_bitmap_font<bool> &into) {
std::FILE *f = std::fopen(path, "r");
if (!f)
return false;
bool success = try_load_psf(f, into);
std::fclose(f);
return success;
}
}
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