Class: Proj::Api::PjAxisDescription

Inherits:
FFI::Struct
  • Object
show all
Defined in:
lib/api/proj.rb,
lib/proj/pj_axis_description.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#retained_ptrs ⇒ Object

Returns the value of attribute retained_ptrs.



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# File 'lib/proj/pj_axis_description.rb', line 4

def retained_ptrs
  @retained_ptrs
end

Class Method Details

.create(name:, abbreviation:, direction:, unit_name:, unit_conv_factor:, unit_type:) ⇒ Object 



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# File 'lib/proj/pj_axis_description.rb', line 6

def self.create(name:, abbreviation:, direction:, unit_name:, unit_conv_factor:, unit_type:)
  result = PjAxisDescription.new
  result.retained_ptrs = []
  result.put_string(:name, name)
  result.put_string(:abbreviation, abbreviation)
  result.put_string(:direction, direction)
  result.put_string(:unit_name, unit_name)
  result[:unit_conv_factor] = unit_conv_factor
  result[:unit_type] = unit_type
  result
end

Instance Method Details

#put_string(field, value) ⇒ Object

Write a string into a :string field and retain the pointer to prevent GC.



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# File 'lib/proj/pj_axis_description.rb', line 19

def put_string(field, value)
  ptr = FFI::MemoryPointer.from_string(value)
  @retained_ptrs << ptr
  pointer.put_pointer(offset_of(field), ptr)
end