add method
ItemIdx
add({
- required CoordinateNumberType minX,
- required CoordinateNumberType minY,
- required CoordinateNumberType maxX,
- required CoordinateNumberType maxY,
Adds a given rectangle to the index, specified by
minX
, minY
, maxX
, and maxY
, and returns
the corresponding ItemIdx for the added item.
Implementation
ItemIdx add({
required CoordinateNumberType minX,
required CoordinateNumberType minY,
required CoordinateNumberType maxX,
required CoordinateNumberType maxY,
}) {
final index = _pos >> 2;
_indices[index] = index;
_boxes[_pos++] = minX;
_boxes[_pos++] = minY;
_boxes[_pos++] = maxX;
_boxes[_pos++] = maxY;
if (minX < _indexMinX) _indexMinX = minX;
if (minY < _indexMinY) _indexMinY = minY;
if (maxX > _indexMaxX) _indexMaxX = maxX;
if (maxY > _indexMaxY) _indexMaxY = maxY;
return index;
}