raster_sparse.cpp

Go to the documentation of this file.

 
 
#include <stdint.h>
 
#include "fl/draw_visitor.h"
#include "fl/raster_sparse.h"
#include "fl/tile2x2.h"
 
namespace fl {
 
void XYRasterU8Sparse::draw(const CRGB &color, const XYMap &xymap, CRGB *out) {
    XYDrawComposited visitor(color, xymap, out);
    draw(xymap, visitor);
}
 
void XYRasterU8Sparse::drawGradient(const Gradient &gradient,
                                    const XYMap &xymap, CRGB *out) {
    XYDrawGradient visitor(gradient, xymap, out);
    draw(xymap, visitor);
}
 
void XYRasterU8Sparse::rasterize(const Slice<const Tile2x2_u8> &tiles) {
    // Tile2x2_u8::Rasterize(tiles, this, mAbsoluteBoundsSet ? &mAbsoluteBounds
    // : nullptr);
    if (tiles.size() == 0) {
        FASTLED_WARN("Rasterize: no tiles");
        return;
    }
    const rect<int> *optional_bounds =
        mAbsoluteBoundsSet ? nullptr : &mAbsoluteBounds;
 
    // Check if the bounds are set.
    // draw all now unconditionally.
    for (const auto &tile : tiles) {
        // Rasterize the tile.
        rasterize_internal(tile, optional_bounds);
    }
    return;
}
 
void XYRasterU8Sparse::rasterize_internal(const Tile2x2_u8 &tile,
                                          const rect<int> *optional_bounds) {
    const vec2<int> &origin = tile.origin();
    for (int x = 0; x < 2; ++x) {
        for (int y = 0; y < 2; ++y) {
            uint8_t value = tile.at(x, y);
            if (!value) {
                continue;
            }
            int xx = origin.x + x;
            int yy = origin.y + y;
            if (optional_bounds && !optional_bounds->contains(xx, yy)) {
                continue;
            }
            write(vec2<int>(xx, yy), value);
        }
    }
}
 
} // namespace fl