write()

void fl::XYRasterU8Sparse::write ( const vec2< int16_t > & pt, uint8_t value )

inline

Definition at line 169 of file raster_sparse.h.

                                                       {
        // FASTLED_WARN("write: " << pt.x << "," << pt.y << " value: " <<
        // value); mSparseGrid.insert(pt, value);
 
        uint8_t **cached = mCache.find_value(pt);
        if (cached) {
            uint8_t *val = *cached;
            if (*val < value) {
                *val = value;
            }
            return;
        }
        if (mCache.size() <= kMaxCacheSize) {
            // cache it.
            uint8_t *v = mSparseGrid.find_value(pt);
            if (v == nullptr) {
                // FASTLED_WARN("write: " << pt.x << "," << pt.y << " value: "
                // << value);
                if (mSparseGrid.needs_rehash()) {
                    // mSparseGrid is about to rehash, so we need to clear the
                    // small cache because it shares pointers.
                    mCache.clear();
                }
 
                mSparseGrid.insert(pt, value);
                return;
            }
            mCache.insert(pt, v);
            if (*v < value) {
                *v = value;
            }
            return;
        } else {
            // overflow, clear cache and write directly.
            mCache.clear();
            mSparseGrid.insert(pt, value);
            return;
        }
    }

References kMaxCacheSize, mCache, and mSparseGrid.

Referenced by rasterize(), and rasterize_internal().

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