class GDAL::Transformers::ApproximateTransformer
Attributes
c_pointer[R]
@return [FFI::Pointer]
Public Class Methods
function()
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@return [FFI::Function]
# File lib/gdal/transformers/approximate_transformer.rb, line 7 def self.function FFI::GDAL::Alg::ApproxTransform end
new(base_transformer, max_error)
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@param base_transformer [GDAL::Transformer] @param max_error [Float] The maximum cartesian error in the “output” space
that will be accepted in the linear approximation.
# File lib/gdal/transformers/approximate_transformer.rb, line 24 def initialize(base_transformer, max_error) base_transformer_function = base_transformer.function transformer_arg_ptr = base_transformer.c_pointer pointer = FFI::GDAL::Alg.GDALCreateApproxTransformer( base_transformer_function, transformer_arg_ptr, max_error ) @c_pointer = FFI::AutoPointer.new(pointer, ApproximateTransformer.method(:destroy)) end
release(pointer)
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@param pointer [FFI::Pointer]
# File lib/gdal/transformers/approximate_transformer.rb, line 12 def self.release(pointer) return unless pointer && !pointer.null? FFI::GDAL::Alg.GDALDestroyApproxTransformer(pointer) end
Public Instance Methods
destroy!()
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# File lib/gdal/transformers/approximate_transformer.rb, line 37 def destroy! ApproximateTransformer.destroy(@c_pointer) @c_pointer = nil end
function()
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@return [FFI::Function]
# File lib/gdal/transformers/approximate_transformer.rb, line 44 def function self.class.function end
owns_subtransformer(data, own_flag)
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@param data [FFI::Pointer] Pointer to the data that is passed to
#function.
@param own_flag [Boolean]
# File lib/gdal/transformers/approximate_transformer.rb, line 51 def owns_subtransformer(data, own_flag) FFI::GDAL::Alg.GDALApproxTransformerOwnsSubtransformer(data, own_flag) end