148 {
150 auto pt = it.first;
152 continue;
153 }
154 uint32_t index =
xymap(pt.x, pt.y);
155 uint8_t value = it.second;
156 if (value > 0) {
157 visitor.draw(pt, index, value);
158 }
159 }
160 }
XYMap xymap(WIDTH, HEIGHT, SERPENTINE)
bool has(uint16_t x, uint16_t y) const