verticalSlices method
@param childBoundables Must be sorted by the x-value of the envelope midpoints
Implementation
List<List> verticalSlices(List childBoundables, int sliceCount) {
int sliceCapacity = (childBoundables.length / sliceCount.toDouble()).ceil();
List<List> slices = []; //..length = sliceCount;
Iterator i = childBoundables.iterator;
for (int j = 0; j < sliceCount; j++) {
slices.add([]);
// slices[j] = [];
int boundablesAddedToSlice = 0;
while (boundablesAddedToSlice < sliceCapacity && i.moveNext()) {
Boundable childBoundable = i.current as Boundable;
slices[j].add(childBoundable);
boundablesAddedToSlice++;
}
}
return slices;
}