spiral static method
Implementation
static List<Point> spiral(int distanceMultiplier, int count, Point center) {
num legLength = distanceMultiplier * spiralLengthStart;
final separation = distanceMultiplier * spiralFootSeparation;
final lengthFactor = distanceMultiplier * spiralLengthFactor * pi2;
num angle = 0;
final result = <Point>[];
// Higher index, closer position to cluster center.
for (var i = count; i >= 0; i--) {
// Skip the first position, so that we are already farther from center and we avoid
// being under the default cluster icon (especially important for Circle Markers).
if (i < count) {
result[i] = Point(center.x + legLength * cos(angle),
center.y + legLength * sin(angle));
}
angle += separation / legLength + i * 0.0005;
legLength += lengthFactor / angle;
}
return result;
}