addPointXY method

int addPointXY({
  1. required double x,
  2. required double y,
})

Add a new point to the end of the mutable point collection by specifying the points x,y coordinates.

Parameters:

  • x — The x-coordinate of the new point.
  • y — The y-coordinate of the new point.

Return Value: the point index where the point was added. If an error occurred, then -1 is returned.