Method mapToIndex

src/fl/math/xymap.cpp.hpp:116–147

}

u16 XYMap::mapToIndex(const u16 &x, const u16 &y) const {
    u16 index;
    switch (type) {
    case kSerpentine: {
        u16 xx = x % width;
        u16 yy = y % height;
        index = xy_serpentine(xx, yy, width, height);
        break;
    }
    case kLineByLine: {
        u16 xx = x % width;
        u16 yy = y % height;
        index = xy_line_by_line(xx, yy, width, height);
        break;
    }
    case kFunction:
        if (xyFunction) {
            index = xyFunction(x, y, width, height);
        } else {
            // Null function pointer — fall back to line-by-line to avoid crash.
            // This can happen due to cross-DLL static initialization order issues.
            index = xy_line_by_line(x, y, width, height);
        }
        break;
    case kLookUpTable:
        index = mLookUpTable->getData()[y * width + x];
        break;
    default:
        return 0;
    }
    return index + mOffset;
}

u16 XYMap::getWidth() const { return width; }