tile2x2.cpp

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#include "fl/tile2x2.h"
#include "crgb.h"
#include "fl/draw_visitor.h"
#include "fl/math_macros.h"
#include "fl/raster.h"
#include "fl/raster_sparse.h"
#include "fl/unused.h"
#include "fl/warn.h"
#include "fl/xymap.h"
 
namespace fl {
 
namespace {
static vec2i16 wrap(const vec2i16 &v, const vec2i16 &size) {
    // Wrap the vector v around the size
    return vec2i16(v.x % size.x, v.y % size.y);
}
 
static vec2i16 wrap_x(const vec2i16 &v, const uint16_t width) {
    // Wrap the x component of the vector v around the size
    return vec2i16(v.x % width, v.y);
}
} // namespace
 
void Tile2x2_u8::Rasterize(const Slice<const Tile2x2_u8> &tiles,
                           XYRasterU8Sparse *out_raster) {
    out_raster->rasterize(tiles);
}
 
void Tile2x2_u8::draw(const CRGB &color, const XYMap &xymap, CRGB *out) const {
    XYDrawComposited visitor(color, xymap, out);
    draw(xymap, visitor);
}
 
void Tile2x2_u8::scale(uint8_t scale) {
    // scale the tile
    if (scale == 255) {
        return;
    }
    for (int x = 0; x < 2; ++x) {
        for (int y = 0; y < 2; ++y) {
            uint16_t value = at(x, y);
            at(x, y) = (value * scale) >> 8;
        }
    }
}
 
Tile2x2_u8_wrap::Tile2x2_u8_wrap(const Tile2x2_u8 &from, uint16_t width) {
    const vec2i16 origin = from.origin();
    at(0, 0) = {wrap_x(vec2i16(origin.x, origin.y), width), from.at(0, 0)};
    at(0, 1) = {wrap_x(vec2i16(origin.x, origin.y + 1), width), from.at(0, 1)};
    at(1, 0) = {wrap_x(vec2i16(origin.x + 1, origin.y), width), from.at(1, 0)};
    at(1, 1) = {wrap_x(vec2i16(origin.x + 1, origin.y + 1), width),
                from.at(1, 1)};
}
 
Tile2x2_u8_wrap::Data &Tile2x2_u8_wrap::at(uint16_t x, uint16_t y) {
    // Wrap around the edges
    x = (x + 2) % 2;
    y = (y + 2) % 2;
    return tile[y][x];
}
 
const Tile2x2_u8_wrap::Data &Tile2x2_u8_wrap::at(uint16_t x, uint16_t y) const {
    // Wrap around the edges
    x = (x + 2) % 2;
    y = (y + 2) % 2;
    return tile[y][x];
}
 
Tile2x2_u8_wrap::Tile2x2_u8_wrap(const Tile2x2_u8 &from, uint16_t width,
                                 uint16_t height) {
    const vec2i16 origin = from.origin();
    at(0, 0) = {wrap(vec2i16(origin.x, origin.y), vec2i16(width, height)),
                from.at(0, 0)};
    at(0, 1) = {wrap(vec2i16(origin.x, origin.y + 1), vec2i16(width, height)),
                from.at(0, 1)};
    at(1, 0) = {wrap(vec2i16(origin.x + 1, origin.y), vec2i16(width, height)),
                from.at(1, 0)};
    at(1,
       1) = {wrap(vec2i16(origin.x + 1, origin.y + 1), vec2i16(width, height)),
             from.at(1, 1)};
}
 
uint8_t Tile2x2_u8::maxValue() const {
    uint8_t max = 0;
    max = MAX(max, at(0, 0));
    max = MAX(max, at(0, 1));
    max = MAX(max, at(1, 0));
    max = MAX(max, at(1, 1));
    return max;
}
 
Tile2x2_u8 Tile2x2_u8::MaxTile(const Tile2x2_u8 &a, const Tile2x2_u8 &b) {
    Tile2x2_u8 result;
    for (int x = 0; x < 2; ++x) {
        for (int y = 0; y < 2; ++y) {
            result.at(x, y) = MAX(a.at(x, y), b.at(x, y));
        }
    }
    return result;
}
 
rect<int16_t> Tile2x2_u8::bounds() const {
    vec2<int16_t> min = mOrigin;
    vec2<int16_t> max = mOrigin + vec2<int16_t>(2, 2);
    return rect<int16_t>(min, max);
}
 
} // namespace fl