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authorHamilton Kibbe <hamilton.kibbe@gmail.com>2014-10-12 12:38:40 -0400
committerHamilton Kibbe <hamilton.kibbe@gmail.com>2014-10-12 12:38:40 -0400
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-
-# Gerber (RS-274X or Extended Gerber) is a bilevel, resolution independent image format.
-
-# // graphic objects
-# // draw: line segment, thickness, round or square line endings. (solid circle and rectangule apertures only)
-# // arc: circular arc, thickness, round endings. (solid circle standard aperture only)
-# // flash: replication of a given apertura (shape)
-# // region: are defined by a countour (linear/arc segments.)
-#
-# // draw/arc: can have zero length (just flash the aperture)
-# // flash: any aperture can be flashed
-#
-# // operation codes operates on coordinate data blocks. each operation code is for one coordinate data block pair and vice-versa.
-# // D01: stroke an aperture from current point to coordinate pair. region mode off. lights-on move.
-# // D02: move current point to this coordinate pair
-# // D03: flash current aperture at this coordinate pair.
-#
-# // graphics state
-# // all state controlled by codes and parameters, except current point
-# //
-# // state fixed? initial value
-# // coordinate format fixed undefined
-# // unit fixed undefined
-# // image polarity fixed positive
-# // steps/repeat variable 1,1,-,-
-# // level polarity variable dark
-# // region mode variable off
-# // current aperture variable undefined
-# // quadrant mode variable undefined
-# // interpolation mode variable undefined
-# // current point variable (0,0)
-#
-# // attributes: metadata, both standard and custom. No change on image.
-#
-# // G01: linear
-# // G04: comment
-# // M02: end of file
-# // D: select aperture
-# // G75: multi quadrant mode (circles)
-# // G36: region begin
-# // G37: region end
-#
-# // [G01] [Xnnfffff] [Ynnffff] D01*
-#
-# // ASCII 32-126, CR LF.
-# // * end-of-block
-# // % parameer delimiter
-# // , field separator
-# // <space> only in comments
-# // case sensitive
-#
-# // int: +/- 32 bit signed
-# // decimal: +/- digits
-# // names: [a-zA-Z_$]{[a-zA-Z_$0-9]+} (255)
-# // strings: [a-zA-Z0-9_+-/!?<>”’(){}.\|&@# ]+ (65535)
-#
-# // data block: end in *
-# // statement: one or more data block, if contain parameters starts and end in % (parameter statement)
-# // statement: [%]<Data Block>{<Data Block>}[%]
-# // statements: function code, coordinate data, parameters
-#
-# // function code: operation codes (D01..) or code that set state.
-# // function codes applies before operation codes act on coordinates
-#
-# // coordinate data: <Coordinate data>: [X<Number>][Y<Number>][I<Number>][J<Number>](D01|D02|D03)
-# // offsets are not modal
-#
-# // parameter: %Parameter code<required modifiers>[optional modifiers]*%
-# // code: 2 characters
-#
-# // parameters can have line separators: %<Parameter>{{<Line separator>}<Parameter>}%
-#
-# // function code: (GDM){1}[number], parameters: [AZ]{2} \ No newline at end of file