def transform_all!(otherProjection, collection)
      collection.each do |point|
        transform!(otherProjection, point)
      end
      collection
    end
def transform_all!(otherProjection, collection)
      collection.each do |point|
        transform!(otherProjection, point)
      end
      collection
    end
Transforms all points in a collection 'in place' from one projection
 to another. The +collection+ object must implement the +each+
 method for this to work.

 call-seq: transform_all!(destinationProjection, collection) -> collection