140 lines
4.2 KiB
Python
140 lines
4.2 KiB
Python
#! /usr/bin/env python
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# -*- coding: utf-8 -*-
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# Copyright 2013-2014 Paulo Henrique Silva <ph.silva@gmail.com>
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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IMAGE_POLARITY_POSITIVE = 1
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IMAGE_POLARITY_NEGATIVE = 2
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LEVEL_POLARITY_DARK = 1
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LEVEL_POLARITY_CLEAR = 2
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NOTATION_ABSOLUTE = 1
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NOTATION_INCREMENTAL = 2
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UNIT_INCH = 1
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UNIT_MM = 2
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INTERPOLATION_LINEAR = 1
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INTERPOLATION_ARC = 2
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class GerberCoordFormat(object):
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def __init__(self, zeroes, x, y):
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self.omit_leading_zeroes = True if zeroes == "L" else False
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self.omit_trailing_zeroes = True if zeroes == "T" else False
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self.x_int_digits, self.x_dec_digits = [int(d) for d in x]
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self.y_int_digits, self.y_dec_digits = [int(d) for d in y]
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def resolve(self, x, y):
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new_x = x
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new_y = y
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if new_x is not None:
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negative = "-" in new_x
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new_x = new_x.replace("-", "")
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missing_zeroes = (self.x_int_digits + self.x_dec_digits) - len(new_x)
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if missing_zeroes and self.omit_leading_zeroes:
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new_x = (missing_zeroes * "0") + new_x
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elif missing_zeroes and self.omit_trailing_zeroes:
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new_x += missing_zeroes * "0"
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new_x = float("{0}{1}.{2}".format("-" if negative else "",
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new_x[:self.x_int_digits],
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new_x[self.x_int_digits:]))
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if new_y is not None:
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negative = "-" in new_y
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new_y = new_y.replace("-", "")
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missing_zeroes = (self.y_int_digits + self.y_dec_digits) - len(new_y)
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if missing_zeroes and self.omit_leading_zeroes:
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new_y = (missing_zeroes * "0") + new_y
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elif missing_zeroes and self.omit_trailing_zeroes:
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new_y += missing_zeroes * "0"
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new_y = float("{0}{1}.{2}".format("-" if negative else "",
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new_y[:self.y_int_digits],
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new_y[self.y_int_digits:]))
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return new_x, new_y
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class GerberContext(object):
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coord_format = None
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coord_notation = NOTATION_ABSOLUTE
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coord_unit = None
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x = 0
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y = 0
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aperture = 0
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interpolation = INTERPOLATION_LINEAR
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image_polarity = IMAGE_POLARITY_POSITIVE
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level_polarity = LEVEL_POLARITY_DARK
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def __init__(self):
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pass
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def set_coord_format(self, zeroes, x, y):
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self.coord_format = GerberCoordFormat(zeroes, x, y)
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def set_coord_notation(self, notation):
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self.coord_notation = NOTATION_ABSOLUTE if notation == "A" else NOTATION_INCREMENTAL
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def set_coord_unit(self, unit):
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self.coord_unit = UNIT_INCH if unit == "IN" else UNIT_MM
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def set_image_polarity(self, polarity):
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self.image_polarity = IMAGE_POLARITY_POSITIVE if polarity == "POS" else IMAGE_POLARITY_NEGATIVE
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def set_level_polarity(self, polarity):
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self.level_polarity = LEVEL_POLARITY_DARK if polarity == "D" else LEVEL_POLARITY_CLEAR
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def set_interpolation(self, interpolation):
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self.interpolation = INTERPOLATION_LINEAR if interpolation in ("G01", "G1") else INTERPOLATION_ARC
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def set_aperture(self, d):
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self.aperture = d
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def resolve(self, x, y):
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x, y = self.coord_format.resolve(x, y)
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return x or self.x, y or self.y
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def define_aperture(self, d, shape, modifiers):
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pass
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def move(self, x, y, resolve=True):
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if resolve:
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self.x, self.y = self.resolve(x, y)
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else:
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self.x, self.y = x, y
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def stroke(self, x, y):
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pass
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def line(self, x, y):
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pass
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def arc(self, x, y):
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pass
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def flash(self, x, y):
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pass
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