135 lines
3.8 KiB
Python
135 lines
3.8 KiB
Python
#! /usr/bin/env python
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# -*- coding: utf-8 -*-
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# copyright 2014 Hamilton Kibbe <ham@hamiltonkib.be>
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# Modified from code by 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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from ..gerber_statements import (
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CommentStmt, UnknownStmt, EofStmt, ParamStmt, CoordStmt, ApertureStmt
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)
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class GerberContext(object):
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settings = {}
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x = 0
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y = 0
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aperture = 0
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interpolation = 'linear'
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image_polarity = 'positive'
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level_polarity = 'dark'
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def __init__(self):
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pass
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def set_format(self, settings):
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self.settings = settings
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def set_coord_format(self, zero_suppression, format, notation):
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self.settings['zero_suppression'] = zero_suppression
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self.settings['format'] = format
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self.settings['notation'] = notation
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def set_coord_notation(self, notation):
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self.settings['notation'] = notation
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def set_coord_unit(self, unit):
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self.settings['units'] = unit
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def set_image_polarity(self, polarity):
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self.image_polarity = polarity
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def set_level_polarity(self, polarity):
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self.level_polarity = polarity
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def set_interpolation(self, interpolation):
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self.interpolation = 'linear' if interpolation in ("G01", "G1") else '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 = x if x is not None else self.x
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y = y if y is not None else self.y
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return x, 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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def drill(self, x, y, diameter):
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pass
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def evaluate(self, stmt):
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if isinstance(stmt, (CommentStmt, UnknownStmt, EofStmt)):
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return
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elif isinstance(stmt, ParamStmt):
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self._evaluate_param(stmt)
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elif isinstance(stmt, CoordStmt):
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self._evaluate_coord(stmt)
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elif isinstance(stmt, ApertureStmt):
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self._evaluate_aperture(stmt)
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else:
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raise Exception("Invalid statement to evaluate")
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def _evaluate_param(self, stmt):
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if stmt.param == "FS":
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self.set_coord_format(stmt.zero_suppression, stmt.format, stmt.notation)
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self.set_coord_notation(stmt.notation)
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elif stmt.param == "MO:":
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self.set_coord_unit(stmt.mode)
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elif stmt.param == "IP:":
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self.set_image_polarity(stmt.ip)
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elif stmt.param == "LP:":
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self.set_level_polarity(stmt.lp)
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elif stmt.param == "AD":
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self.define_aperture(stmt.d, stmt.shape, stmt.modifiers)
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def _evaluate_coord(self, stmt):
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if stmt.function in ("G01", "G1", "G02", "G2", "G03", "G3"):
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self.set_interpolation(stmt.function)
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if stmt.op == "D01":
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self.stroke(stmt.x, stmt.y)
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elif stmt.op == "D02":
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self.move(stmt.x, stmt.y)
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elif stmt.op == "D03":
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self.flash(stmt.x, stmt.y)
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def _evaluate_aperture(self, stmt):
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self.set_aperture(stmt.d)
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