1040 lines
50 KiB
Python
1040 lines
50 KiB
Python
# ##########################################################
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# FlatCAM: 2D Post-processing for Manufacturing #
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# File Author: Marius Adrian Stanciu (c) #
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# Date: 4/23/2019 #
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# MIT Licence #
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# ##########################################################
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from PyQt5 import QtCore
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from appCommon.Common import GracefulException as grace
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from shapely.geometry import Polygon, LineString, MultiPolygon
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from copy import copy, deepcopy
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import numpy as np
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import re
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import logging
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log = logging.getLogger('base')
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class PdfParser(QtCore.QObject):
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def __init__(self, app):
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super().__init__()
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self.app = app
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self.step_per_circles = self.app.defaults["gerber_circle_steps"]
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# detect stroke color change; it means a new object to be created
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self.stroke_color_re = re.compile(r'^\s*(\d+\.?\d*) (\d+\.?\d*) (\d+\.?\d*)\s*RG$')
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# detect fill color change; we check here for white color (transparent geometry);
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# if detected we create an Excellon from it
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self.fill_color_re = re.compile(r'^\s*(\d+\.?\d*) (\d+\.?\d*) (\d+\.?\d*)\s*rg$')
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# detect 're' command
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self.rect_re = re.compile(r'^(-?\d+\.?\d*)\s(-?\d+\.?\d*)\s(-?\d+\.?\d*)\s(-?\d+\.?\d*)\s*re$')
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# detect 'm' command
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self.start_subpath_re = re.compile(r'^(-?\d+\.?\d*)\s(-?\d+\.?\d*)\sm$')
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# detect 'l' command
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self.draw_line_re = re.compile(r'^(-?\d+\.?\d*)\s(-?\d+\.?\d*)\sl')
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# detect 'c' command
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self.draw_arc_3pt_re = re.compile(r'^(-?\d+\.?\d*)\s(-?\d+\.?\d*)\s(-?\d+\.?\d*)\s(-?\d+\.?\d*)\s(-?\d+\.?\d*)'
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r'\s(-?\d+\.?\d*)\s*c$')
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# detect 'v' command
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self.draw_arc_2pt_c1start_re = re.compile(r'^(-?\d+\.?\d*)\s(-?\d+\.?\d*)\s(-?\d+\.?\d*)\s(-?\d+\.?\d*)\s*v$')
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# detect 'y' command
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self.draw_arc_2pt_c2stop_re = re.compile(r'^(-?\d+\.?\d*)\s(-?\d+\.?\d*)\s(-?\d+\.?\d*)\s(-?\d+\.?\d*)\s*y$')
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# detect 'h' command
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self.end_subpath_re = re.compile(r'^h$')
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# detect 'w' command
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self.strokewidth_re = re.compile(r'^(\d+\.?\d*)\s*w$')
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# detect 'S' command
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self.stroke_path__re = re.compile(r'^S\s?[Q]?$')
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# detect 's' command
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self.close_stroke_path__re = re.compile(r'^s$')
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# detect 'f' or 'f*' command
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self.fill_path_re = re.compile(r'^[f|F][*]?$')
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# detect 'B' or 'B*' command
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self.fill_stroke_path_re = re.compile(r'^B[*]?$')
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# detect 'b' or 'b*' command
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self.close_fill_stroke_path_re = re.compile(r'^b[*]?$')
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# detect 'n'
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self.no_op_re = re.compile(r'^n$')
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# detect offset transformation. Pattern: (1) (0) (0) (1) (x) (y)
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# self.offset_re = re.compile(r'^1\.?0*\s0?\.?0*\s0?\.?0*\s1\.?0*\s(-?\d+\.?\d*)\s(-?\d+\.?\d*)\s*cm$')
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# detect scale transformation. Pattern: (factor_x) (0) (0) (factor_y) (0) (0)
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# self.scale_re = re.compile(r'^q? (-?\d+\.?\d*) 0\.?0* 0\.?0* (-?\d+\.?\d*) 0\.?0* 0\.?0*\s+cm$')
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# detect combined transformation. Should always be the last
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self.combined_transform_re = re.compile(r'^(q)?\s*(-?\d+\.?\d*) (-?\d+\.?\d*) (-?\d+\.?\d*) (-?\d+\.?\d*) '
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r'(-?\d+\.?\d*) (-?\d+\.?\d*)\s+cm$')
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# detect clipping path
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self.clip_path_re = re.compile(r'^W[*]? n?$')
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# detect save graphic state in graphic stack
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self.save_gs_re = re.compile(r'^q.*?$')
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# detect restore graphic state from graphic stack
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self.restore_gs_re = re.compile(r'^.*Q.*$')
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# graphic stack where we save parameters like transformation, line_width
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# each element is a list composed of sublist elements
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# (each sublist has 2 lists each having 2 elements: first is offset like:
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# offset_geo = [off_x, off_y], second element is scale list with 2 elements, like: scale_geo = [sc_x, sc_yy])
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self.gs = {'transform': [], 'line_width': []}
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# conversion factor to INCH
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self.point_to_unit_factor = 0.01388888888
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def parse_pdf(self, pdf_content):
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# the UNITS in PDF files are points and here we set the factor to convert them to real units (either MM or INCH)
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if self.app.defaults['units'].upper() == 'MM':
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# 1 inch = 72 points => 1 point = 1 / 72 = 0.01388888888 inch = 0.01388888888 inch * 25.4 = 0.35277777778 mm
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self.point_to_unit_factor = 25.4 / 72
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else:
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# 1 inch = 72 points => 1 point = 1 / 72 = 0.01388888888 inch
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self.point_to_unit_factor = 1 / 72
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path = {
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'lines': [], # it's a list of lines subpaths
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'bezier': [], # it's a list of bezier arcs subpaths
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'rectangle': [] # it's a list of rectangle subpaths
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}
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subpath = {
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'lines': [], # it's a list of points
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'bezier': [], # it's a list of sublists each like this [start, c1, c2, stop]
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'rectangle': [] # it's a list of sublists of points
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}
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# store the start point (when 'm' command is encountered)
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current_subpath = None
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# set True when 'h' command is encountered (close subpath)
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close_subpath = False
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start_point = None
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current_point = None
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size = 0
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# initial values for the transformations, in case they are not encountered in the PDF file
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offset_geo = [0, 0]
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scale_geo = [1, 1]
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# store the objects to be transformed into Gerbers
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object_dict = {}
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# will serve as key in the object_dict
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layer_nr = 1
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# create first object
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object_dict[layer_nr] = {}
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# store the apertures here
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apertures_dict = {}
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# initial aperture
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aperture = 10
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# store the apertures with clear geometry here
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# we are interested only in the circular geometry (drill holes) therefore we target only Bezier subpaths
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# everything will be stored in the '0' aperture since we are dealing with clear polygons not strokes
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clear_apertures_dict = {
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'0': {
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'size': 0.0,
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'type': 'C',
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'geometry': []
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}
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}
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# on stroke color change we create a new apertures dictionary and store the old one in a storage from where
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# it will be transformed into Gerber object
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old_color = [None, None, None]
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# signal that we have clear geometry and the geometry will be added to a special layer_nr = 0
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flag_clear_geo = False
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line_nr = 0
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lines = pdf_content.splitlines()
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for pline in lines:
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if self.app.abort_flag:
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# graceful abort requested by the user
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raise grace
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line_nr += 1
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log.debug("line %d: %s" % (line_nr, pline))
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# COLOR DETECTION / OBJECT DETECTION
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match = self.stroke_color_re.search(pline)
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if match:
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color = [float(match.group(1)), float(match.group(2)), float(match.group(3))]
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log.debug(
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"parse_pdf() --> STROKE Color change on line: %s --> RED=%f GREEN=%f BLUE=%f" %
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(line_nr, color[0], color[1], color[2]))
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if color[0] == old_color[0] and color[1] == old_color[1] and color[2] == old_color[2]:
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# same color, do nothing
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continue
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else:
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if apertures_dict:
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object_dict[layer_nr] = deepcopy(apertures_dict)
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apertures_dict.clear()
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layer_nr += 1
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object_dict[layer_nr] = {}
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old_color = copy(color)
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# we make sure that the following geometry is added to the right storage
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flag_clear_geo = False
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continue
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# CLEAR GEOMETRY detection
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match = self.fill_color_re.search(pline)
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if match:
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fill_color = [float(match.group(1)), float(match.group(2)), float(match.group(3))]
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log.debug(
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"parse_pdf() --> FILL Color change on line: %s --> RED=%f GREEN=%f BLUE=%f" %
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(line_nr, fill_color[0], fill_color[1], fill_color[2]))
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# if the color is white we are seeing 'clear_geometry' that can't be seen. It may be that those
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# geometries are actually holes from which we can make an Excellon file
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if fill_color[0] == 1 and fill_color[1] == 1 and fill_color[2] == 1:
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flag_clear_geo = True
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else:
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flag_clear_geo = False
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continue
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# TRANSFORMATIONS DETECTION #
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# Detect combined transformation.
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match = self.combined_transform_re.search(pline)
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if match:
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# detect save graphic stack event
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# sometimes they combine save_to_graphics_stack with the transformation on the same line
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if match.group(1) == 'q':
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log.debug(
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"parse_pdf() --> Save to GS found on line: %s --> offset=[%f, %f] ||| scale=[%f, %f]" %
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(line_nr, offset_geo[0], offset_geo[1], scale_geo[0], scale_geo[1]))
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self.gs['transform'].append(deepcopy([offset_geo, scale_geo]))
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self.gs['line_width'].append(deepcopy(size))
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# transformation = TRANSLATION (OFFSET)
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if (float(match.group(3)) == 0 and float(match.group(4)) == 0) and \
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(float(match.group(6)) != 0 or float(match.group(7)) != 0):
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log.debug(
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"parse_pdf() --> OFFSET transformation found on line: %s --> %s" % (line_nr, pline))
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offset_geo[0] += float(match.group(6))
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offset_geo[1] += float(match.group(7))
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# log.debug("Offset= [%f, %f]" % (offset_geo[0], offset_geo[1]))
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# transformation = SCALING
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if float(match.group(2)) != 1 and float(match.group(5)) != 1:
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log.debug(
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"parse_pdf() --> SCALE transformation found on line: %s --> %s" % (line_nr, pline))
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scale_geo[0] *= float(match.group(2))
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scale_geo[1] *= float(match.group(5))
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# log.debug("Scale= [%f, %f]" % (scale_geo[0], scale_geo[1]))
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continue
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# detect save graphic stack event
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match = self.save_gs_re.search(pline)
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if match:
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log.debug(
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"parse_pdf() --> Save to GS found on line: %s --> offset=[%f, %f] ||| scale=[%f, %f]" %
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(line_nr, offset_geo[0], offset_geo[1], scale_geo[0], scale_geo[1]))
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self.gs['transform'].append(deepcopy([offset_geo, scale_geo]))
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self.gs['line_width'].append(deepcopy(size))
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# detect restore from graphic stack event
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match = self.restore_gs_re.search(pline)
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if match:
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try:
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restored_transform = self.gs['transform'].pop(-1)
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offset_geo = restored_transform[0]
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scale_geo = restored_transform[1]
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except IndexError:
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# nothing to remove
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log.debug("parse_pdf() --> Nothing to restore")
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pass
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try:
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size = self.gs['line_width'].pop(-1)
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except IndexError:
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log.debug("parse_pdf() --> Nothing to restore")
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# nothing to remove
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pass
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log.debug(
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"parse_pdf() --> Restore from GS found on line: %s --> "
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"restored_offset=[%f, %f] ||| restored_scale=[%f, %f]" %
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(line_nr, offset_geo[0], offset_geo[1], scale_geo[0], scale_geo[1]))
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# log.debug("Restored Offset= [%f, %f]" % (offset_geo[0], offset_geo[1]))
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# log.debug("Restored Scale= [%f, %f]" % (scale_geo[0], scale_geo[1]))
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# PATH CONSTRUCTION #
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# Start SUBPATH
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match = self.start_subpath_re.search(pline)
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if match:
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# we just started a subpath so we mark it as not closed yet
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close_subpath = False
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# init subpaths
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subpath['lines'] = []
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subpath['bezier'] = []
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subpath['rectangle'] = []
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# detect start point to move to
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x = float(match.group(1)) + offset_geo[0]
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y = float(match.group(2)) + offset_geo[1]
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pt = (x * self.point_to_unit_factor * scale_geo[0],
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y * self.point_to_unit_factor * scale_geo[1])
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start_point = pt
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# add the start point to subpaths
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subpath['lines'].append(start_point)
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# subpath['bezier'].append(start_point)
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# subpath['rectangle'].append(start_point)
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current_point = start_point
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continue
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# Draw Line
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match = self.draw_line_re.search(pline)
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if match:
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current_subpath = 'lines'
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x = float(match.group(1)) + offset_geo[0]
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y = float(match.group(2)) + offset_geo[1]
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pt = (x * self.point_to_unit_factor * scale_geo[0],
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y * self.point_to_unit_factor * scale_geo[1])
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subpath['lines'].append(pt)
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current_point = pt
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continue
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# Draw Bezier 'c'
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match = self.draw_arc_3pt_re.search(pline)
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if match:
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current_subpath = 'bezier'
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start = current_point
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x = float(match.group(1)) + offset_geo[0]
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y = float(match.group(2)) + offset_geo[1]
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c1 = (x * self.point_to_unit_factor * scale_geo[0],
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y * self.point_to_unit_factor * scale_geo[1])
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x = float(match.group(3)) + offset_geo[0]
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y = float(match.group(4)) + offset_geo[1]
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c2 = (x * self.point_to_unit_factor * scale_geo[0],
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y * self.point_to_unit_factor * scale_geo[1])
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x = float(match.group(5)) + offset_geo[0]
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y = float(match.group(6)) + offset_geo[1]
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stop = (x * self.point_to_unit_factor * scale_geo[0],
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y * self.point_to_unit_factor * scale_geo[1])
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subpath['bezier'].append([start, c1, c2, stop])
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current_point = stop
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continue
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# Draw Bezier 'v'
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match = self.draw_arc_2pt_c1start_re.search(pline)
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if match:
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current_subpath = 'bezier'
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start = current_point
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x = float(match.group(1)) + offset_geo[0]
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y = float(match.group(2)) + offset_geo[1]
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c2 = (x * self.point_to_unit_factor * scale_geo[0],
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y * self.point_to_unit_factor * scale_geo[1])
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x = float(match.group(3)) + offset_geo[0]
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y = float(match.group(4)) + offset_geo[1]
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stop = (x * self.point_to_unit_factor * scale_geo[0],
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y * self.point_to_unit_factor * scale_geo[1])
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subpath['bezier'].append([start, start, c2, stop])
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current_point = stop
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continue
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# Draw Bezier 'y'
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match = self.draw_arc_2pt_c2stop_re.search(pline)
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if match:
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start = current_point
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x = float(match.group(1)) + offset_geo[0]
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y = float(match.group(2)) + offset_geo[1]
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c1 = (x * self.point_to_unit_factor * scale_geo[0],
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y * self.point_to_unit_factor * scale_geo[1])
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x = float(match.group(3)) + offset_geo[0]
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y = float(match.group(4)) + offset_geo[1]
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stop = (x * self.point_to_unit_factor * scale_geo[0],
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y * self.point_to_unit_factor * scale_geo[1])
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subpath['bezier'].append([start, c1, stop, stop])
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current_point = stop
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continue
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# Draw Rectangle 're'
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match = self.rect_re.search(pline)
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if match:
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current_subpath = 'rectangle'
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x = (float(match.group(1)) + offset_geo[0]) * self.point_to_unit_factor * scale_geo[0]
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y = (float(match.group(2)) + offset_geo[1]) * self.point_to_unit_factor * scale_geo[1]
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width = (float(match.group(3)) + offset_geo[0]) * self.point_to_unit_factor * scale_geo[0]
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height = (float(match.group(4)) + offset_geo[1]) * self.point_to_unit_factor * scale_geo[1]
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pt1 = (x, y)
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pt2 = (x + width, y)
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pt3 = (x + width, y + height)
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pt4 = (x, y + height)
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subpath['rectangle'] += [pt1, pt2, pt3, pt4, pt1]
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current_point = pt1
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continue
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# Detect clipping path set
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# ignore this and delete the current subpath
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match = self.clip_path_re.search(pline)
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if match:
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subpath['lines'] = []
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subpath['bezier'] = []
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subpath['rectangle'] = []
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# it means that we've already added the subpath to path and we need to delete it
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# clipping path is usually either rectangle or lines
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if close_subpath is True:
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close_subpath = False
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if current_subpath == 'lines':
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path['lines'].pop(-1)
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if current_subpath == 'rectangle':
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path['rectangle'].pop(-1)
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continue
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# Close SUBPATH
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match = self.end_subpath_re.search(pline)
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if match:
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close_subpath = True
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if current_subpath == 'lines':
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subpath['lines'].append(start_point)
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# since we are closing the subpath add it to the path, a path may have chained subpaths
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path['lines'].append(copy(subpath['lines']))
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subpath['lines'] = []
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elif current_subpath == 'bezier':
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# subpath['bezier'].append(start_point)
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# since we are closing the subpath add it to the path, a path may have chained subpaths
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path['bezier'].append(copy(subpath['bezier']))
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subpath['bezier'] = []
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elif current_subpath == 'rectangle':
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# subpath['rectangle'].append(start_point)
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# since we are closing the subpath add it to the path, a path may have chained subpaths
|
|
path['rectangle'].append(copy(subpath['rectangle']))
|
|
subpath['rectangle'] = []
|
|
continue
|
|
|
|
# PATH PAINTING #
|
|
|
|
# Detect Stroke width / aperture
|
|
match = self.strokewidth_re.search(pline)
|
|
if match:
|
|
size = float(match.group(1))
|
|
continue
|
|
|
|
# Detect No_Op command, ignore the current subpath
|
|
match = self.no_op_re.search(pline)
|
|
if match:
|
|
subpath['lines'] = []
|
|
subpath['bezier'] = []
|
|
subpath['rectangle'] = []
|
|
continue
|
|
|
|
# Stroke the path
|
|
match = self.stroke_path__re.search(pline)
|
|
if match:
|
|
# scale the size here; some PDF printers apply transformation after the size is declared
|
|
applied_size = size * scale_geo[0] * self.point_to_unit_factor
|
|
path_geo = []
|
|
if current_subpath == 'lines':
|
|
if path['lines']:
|
|
for subp in path['lines']:
|
|
geo = copy(subp)
|
|
try:
|
|
geo = LineString(geo).buffer((float(applied_size) / 2),
|
|
resolution=self.step_per_circles)
|
|
path_geo.append(geo)
|
|
except ValueError:
|
|
pass
|
|
# the path was painted therefore initialize it
|
|
path['lines'] = []
|
|
else:
|
|
geo = copy(subpath['lines'])
|
|
try:
|
|
geo = LineString(geo).buffer((float(applied_size) / 2), resolution=self.step_per_circles)
|
|
path_geo.append(geo)
|
|
except ValueError:
|
|
pass
|
|
subpath['lines'] = []
|
|
|
|
if current_subpath == 'bezier':
|
|
if path['bezier']:
|
|
for subp in path['bezier']:
|
|
geo = []
|
|
for b in subp:
|
|
geo += self.bezier_to_points(start=b[0], c1=b[1], c2=b[2], stop=b[3])
|
|
try:
|
|
geo = LineString(geo).buffer((float(applied_size) / 2),
|
|
resolution=self.step_per_circles)
|
|
path_geo.append(geo)
|
|
except ValueError:
|
|
pass
|
|
# the path was painted therefore initialize it
|
|
path['bezier'] = []
|
|
else:
|
|
geo = []
|
|
for b in subpath['bezier']:
|
|
geo += self.bezier_to_points(start=b[0], c1=b[1], c2=b[2], stop=b[3])
|
|
try:
|
|
geo = LineString(geo).buffer((float(applied_size) / 2), resolution=self.step_per_circles)
|
|
path_geo.append(geo)
|
|
except ValueError:
|
|
pass
|
|
subpath['bezier'] = []
|
|
|
|
if current_subpath == 'rectangle':
|
|
if path['rectangle']:
|
|
for subp in path['rectangle']:
|
|
geo = copy(subp)
|
|
try:
|
|
geo = LineString(geo).buffer((float(applied_size) / 2),
|
|
resolution=self.step_per_circles)
|
|
path_geo.append(geo)
|
|
except ValueError:
|
|
pass
|
|
# the path was painted therefore initialize it
|
|
path['rectangle'] = []
|
|
else:
|
|
geo = copy(subpath['rectangle'])
|
|
try:
|
|
geo = LineString(geo).buffer((float(applied_size) / 2), resolution=self.step_per_circles)
|
|
path_geo.append(geo)
|
|
except ValueError:
|
|
pass
|
|
subpath['rectangle'] = []
|
|
|
|
# store the found geometry
|
|
found_aperture = None
|
|
if apertures_dict:
|
|
for apid in apertures_dict:
|
|
# if we already have an aperture with the current size (rounded to 5 decimals)
|
|
if apertures_dict[apid]['size'] == round(applied_size, 5):
|
|
found_aperture = apid
|
|
break
|
|
|
|
if found_aperture:
|
|
for pdf_geo in path_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in pdf_geo:
|
|
new_el = {'solid': poly, 'follow': poly.exterior}
|
|
apertures_dict[copy(found_aperture)]['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'solid': pdf_geo, 'follow': pdf_geo.exterior}
|
|
apertures_dict[copy(found_aperture)]['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
if str(aperture) in apertures_dict.keys():
|
|
aperture += 1
|
|
apertures_dict[str(aperture)] = {}
|
|
apertures_dict[str(aperture)]['size'] = round(applied_size, 5)
|
|
apertures_dict[str(aperture)]['type'] = 'C'
|
|
apertures_dict[str(aperture)]['geometry'] = []
|
|
for pdf_geo in path_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in pdf_geo:
|
|
new_el = {'solid': poly, 'follow': poly.exterior}
|
|
apertures_dict[str(aperture)]['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'solid': pdf_geo, 'follow': pdf_geo.exterior}
|
|
apertures_dict[str(aperture)]['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
apertures_dict[str(aperture)] = {}
|
|
apertures_dict[str(aperture)]['size'] = round(applied_size, 5)
|
|
apertures_dict[str(aperture)]['type'] = 'C'
|
|
apertures_dict[str(aperture)]['geometry'] = []
|
|
for pdf_geo in path_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in pdf_geo:
|
|
new_el = {'solid': poly, 'follow': poly.exterior}
|
|
apertures_dict[str(aperture)]['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'solid': pdf_geo, 'follow': pdf_geo.exterior}
|
|
apertures_dict[str(aperture)]['geometry'].append(deepcopy(new_el))
|
|
|
|
continue
|
|
|
|
# Fill the path
|
|
match = self.fill_path_re.search(pline)
|
|
if match:
|
|
# scale the size here; some PDF printers apply transformation after the size is declared
|
|
applied_size = size * scale_geo[0] * self.point_to_unit_factor
|
|
path_geo = []
|
|
|
|
if current_subpath == 'lines':
|
|
if path['lines']:
|
|
for subp in path['lines']:
|
|
geo = copy(subp)
|
|
# close the subpath if it was not closed already
|
|
if close_subpath is False:
|
|
geo.append(geo[0])
|
|
try:
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
path_geo.append(geo_el)
|
|
except ValueError:
|
|
pass
|
|
# the path was painted therefore initialize it
|
|
path['lines'] = []
|
|
else:
|
|
geo = copy(subpath['lines'])
|
|
# close the subpath if it was not closed already
|
|
if close_subpath is False:
|
|
geo.append(start_point)
|
|
try:
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
path_geo.append(geo_el)
|
|
except ValueError:
|
|
pass
|
|
subpath['lines'] = []
|
|
|
|
if current_subpath == 'bezier':
|
|
geo = []
|
|
if path['bezier']:
|
|
for subp in path['bezier']:
|
|
for b in subp:
|
|
geo += self.bezier_to_points(start=b[0], c1=b[1], c2=b[2], stop=b[3])
|
|
# close the subpath if it was not closed already
|
|
if close_subpath is False:
|
|
new_g = geo[0]
|
|
geo.append(new_g)
|
|
try:
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
path_geo.append(geo_el)
|
|
except ValueError:
|
|
pass
|
|
# the path was painted therefore initialize it
|
|
path['bezier'] = []
|
|
else:
|
|
for b in subpath['bezier']:
|
|
geo += self.bezier_to_points(start=b[0], c1=b[1], c2=b[2], stop=b[3])
|
|
if close_subpath is False:
|
|
geo.append(start_point)
|
|
try:
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
path_geo.append(geo_el)
|
|
except ValueError:
|
|
pass
|
|
subpath['bezier'] = []
|
|
|
|
if current_subpath == 'rectangle':
|
|
if path['rectangle']:
|
|
for subp in path['rectangle']:
|
|
geo = copy(subp)
|
|
# # close the subpath if it was not closed already
|
|
# if close_subpath is False and start_point is not None:
|
|
# geo.append(start_point)
|
|
try:
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
path_geo.append(geo_el)
|
|
except ValueError:
|
|
pass
|
|
# the path was painted therefore initialize it
|
|
path['rectangle'] = []
|
|
else:
|
|
geo = copy(subpath['rectangle'])
|
|
# # close the subpath if it was not closed already
|
|
# if close_subpath is False and start_point is not None:
|
|
# geo.append(start_point)
|
|
try:
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
path_geo.append(geo_el)
|
|
except ValueError:
|
|
pass
|
|
subpath['rectangle'] = []
|
|
|
|
# we finished painting and also closed the path if it was the case
|
|
close_subpath = True
|
|
|
|
# in case that a color change to white (transparent) occurred
|
|
if flag_clear_geo is True:
|
|
# if there was a fill color change we look for circular geometries from which we can make
|
|
# drill holes for the Excellon file
|
|
if current_subpath == 'bezier':
|
|
# if there are geometries in the list
|
|
if path_geo:
|
|
try:
|
|
for g in path_geo:
|
|
new_el = {'clear': g}
|
|
clear_apertures_dict['0']['geometry'].append(new_el)
|
|
except TypeError:
|
|
new_el = {'clear': path_geo}
|
|
clear_apertures_dict['0']['geometry'].append(new_el)
|
|
|
|
# now that we finished searching for drill holes (this is not very precise because holes in the
|
|
# polygon pours may appear as drill too, but .. hey you can't have it all ...) we add
|
|
# clear_geometry
|
|
try:
|
|
for pdf_geo in path_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in pdf_geo:
|
|
new_el = {'clear': poly}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'clear': pdf_geo}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
except KeyError:
|
|
# in case there is no stroke width yet therefore no aperture
|
|
apertures_dict['0'] = {}
|
|
apertures_dict['0']['size'] = applied_size
|
|
apertures_dict['0']['type'] = 'C'
|
|
apertures_dict['0']['geometry'] = []
|
|
for pdf_geo in path_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in pdf_geo:
|
|
new_el = {'clear': poly}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'clear': pdf_geo}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
# else, add the geometry as usual
|
|
try:
|
|
for pdf_geo in path_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in pdf_geo:
|
|
new_el = {'solid': poly, 'follow': poly.exterior}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'solid': pdf_geo, 'follow': pdf_geo.exterior}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
except KeyError:
|
|
# in case there is no stroke width yet therefore no aperture
|
|
apertures_dict['0'] = {}
|
|
apertures_dict['0']['size'] = applied_size
|
|
apertures_dict['0']['type'] = 'C'
|
|
apertures_dict['0']['geometry'] = []
|
|
for pdf_geo in path_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in pdf_geo:
|
|
new_el = {'solid': poly, 'follow': poly.exterior}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'solid': pdf_geo, 'follow': pdf_geo.exterior}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
continue
|
|
|
|
# Fill and Stroke the path
|
|
match = self.fill_stroke_path_re.search(pline)
|
|
if match:
|
|
# scale the size here; some PDF printers apply transformation after the size is declared
|
|
applied_size = size * scale_geo[0] * self.point_to_unit_factor
|
|
path_geo = []
|
|
fill_geo = []
|
|
|
|
if current_subpath == 'lines':
|
|
if path['lines']:
|
|
# fill
|
|
for subp in path['lines']:
|
|
geo = copy(subp)
|
|
# close the subpath if it was not closed already
|
|
if close_subpath is False:
|
|
geo.append(geo[0])
|
|
try:
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
fill_geo.append(geo_el)
|
|
except ValueError:
|
|
pass
|
|
# stroke
|
|
for subp in path['lines']:
|
|
geo = copy(subp)
|
|
geo = LineString(geo).buffer((float(applied_size) / 2), resolution=self.step_per_circles)
|
|
path_geo.append(geo)
|
|
# the path was painted therefore initialize it
|
|
path['lines'] = []
|
|
else:
|
|
# fill
|
|
geo = copy(subpath['lines'])
|
|
# close the subpath if it was not closed already
|
|
if close_subpath is False:
|
|
geo.append(start_point)
|
|
try:
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
fill_geo.append(geo_el)
|
|
except ValueError:
|
|
pass
|
|
# stroke
|
|
geo = copy(subpath['lines'])
|
|
geo = LineString(geo).buffer((float(applied_size) / 2), resolution=self.step_per_circles)
|
|
path_geo.append(geo)
|
|
subpath['lines'] = []
|
|
subpath['lines'] = []
|
|
|
|
if current_subpath == 'bezier':
|
|
geo = []
|
|
if path['bezier']:
|
|
# fill
|
|
for subp in path['bezier']:
|
|
for b in subp:
|
|
geo += self.bezier_to_points(start=b[0], c1=b[1], c2=b[2], stop=b[3])
|
|
# close the subpath if it was not closed already
|
|
if close_subpath is False:
|
|
geo.append(geo[0])
|
|
try:
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
fill_geo.append(geo_el)
|
|
except ValueError:
|
|
pass
|
|
# stroke
|
|
for subp in path['bezier']:
|
|
geo = []
|
|
for b in subp:
|
|
geo += self.bezier_to_points(start=b[0], c1=b[1], c2=b[2], stop=b[3])
|
|
geo = LineString(geo).buffer((float(applied_size) / 2), resolution=self.step_per_circles)
|
|
path_geo.append(geo)
|
|
# the path was painted therefore initialize it
|
|
path['bezier'] = []
|
|
else:
|
|
# fill
|
|
for b in subpath['bezier']:
|
|
geo += self.bezier_to_points(start=b[0], c1=b[1], c2=b[2], stop=b[3])
|
|
if close_subpath is False:
|
|
geo.append(start_point)
|
|
try:
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
fill_geo.append(geo_el)
|
|
except ValueError:
|
|
pass
|
|
# stroke
|
|
geo = []
|
|
for b in subpath['bezier']:
|
|
geo += self.bezier_to_points(start=b[0], c1=b[1], c2=b[2], stop=b[3])
|
|
geo = LineString(geo).buffer((float(applied_size) / 2), resolution=self.step_per_circles)
|
|
path_geo.append(geo)
|
|
subpath['bezier'] = []
|
|
|
|
if current_subpath == 'rectangle':
|
|
if path['rectangle']:
|
|
# fill
|
|
for subp in path['rectangle']:
|
|
geo = copy(subp)
|
|
# # close the subpath if it was not closed already
|
|
# if close_subpath is False:
|
|
# geo.append(geo[0])
|
|
try:
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
fill_geo.append(geo_el)
|
|
except ValueError:
|
|
pass
|
|
# stroke
|
|
for subp in path['rectangle']:
|
|
geo = copy(subp)
|
|
geo = LineString(geo).buffer((float(applied_size) / 2), resolution=self.step_per_circles)
|
|
path_geo.append(geo)
|
|
# the path was painted therefore initialize it
|
|
path['rectangle'] = []
|
|
else:
|
|
# fill
|
|
geo = copy(subpath['rectangle'])
|
|
# # close the subpath if it was not closed already
|
|
# if close_subpath is False:
|
|
# geo.append(start_point)
|
|
try:
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
fill_geo.append(geo_el)
|
|
except ValueError:
|
|
pass
|
|
# stroke
|
|
geo = copy(subpath['rectangle'])
|
|
geo = LineString(geo).buffer((float(applied_size) / 2), resolution=self.step_per_circles)
|
|
path_geo.append(geo)
|
|
subpath['rectangle'] = []
|
|
|
|
# we finished painting and also closed the path if it was the case
|
|
close_subpath = True
|
|
|
|
# store the found geometry for stroking the path
|
|
found_aperture = None
|
|
if apertures_dict:
|
|
for apid in apertures_dict:
|
|
# if we already have an aperture with the current size (rounded to 5 decimals)
|
|
if apertures_dict[apid]['size'] == round(applied_size, 5):
|
|
found_aperture = apid
|
|
break
|
|
|
|
if found_aperture:
|
|
for pdf_geo in path_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in pdf_geo:
|
|
new_el = {'solid': poly, 'follow': poly.exterior}
|
|
apertures_dict[copy(found_aperture)]['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'solid': pdf_geo, 'follow': pdf_geo.exterior}
|
|
apertures_dict[copy(found_aperture)]['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
if str(aperture) in apertures_dict.keys():
|
|
aperture += 1
|
|
apertures_dict[str(aperture)] = {
|
|
'size': round(applied_size, 5),
|
|
'type': 'C',
|
|
'geometry': []
|
|
}
|
|
for pdf_geo in path_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in pdf_geo:
|
|
new_el = {'solid': poly, 'follow': poly.exterior}
|
|
apertures_dict[str(aperture)]['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'solid': pdf_geo, 'follow': pdf_geo.exterior}
|
|
apertures_dict[str(aperture)]['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
apertures_dict[str(aperture)] = {
|
|
'size': round(applied_size, 5),
|
|
'type': 'C',
|
|
'geometry': []
|
|
}
|
|
|
|
for pdf_geo in path_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in pdf_geo:
|
|
new_el = {'solid': poly, 'follow': poly.exterior}
|
|
apertures_dict[str(aperture)]['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'solid': pdf_geo, 'follow': pdf_geo.exterior}
|
|
apertures_dict[str(aperture)]['geometry'].append(deepcopy(new_el))
|
|
|
|
# ############################################# ##
|
|
# store the found geometry for filling the path #
|
|
# ############################################# ##
|
|
|
|
# in case that a color change to white (transparent) occurred
|
|
if flag_clear_geo is True:
|
|
try:
|
|
for pdf_geo in path_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in fill_geo:
|
|
new_el = {'clear': poly}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'clear': pdf_geo}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
except KeyError:
|
|
# in case there is no stroke width yet therefore no aperture
|
|
apertures_dict['0'] = {
|
|
'size': round(applied_size, 5),
|
|
'type': 'C',
|
|
'geometry': []
|
|
}
|
|
|
|
for pdf_geo in fill_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in pdf_geo:
|
|
new_el = {'clear': poly}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'clear': pdf_geo}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
try:
|
|
for pdf_geo in path_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in fill_geo:
|
|
new_el = {'solid': poly, 'follow': poly.exterior}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'solid': pdf_geo, 'follow': pdf_geo.exterior}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
except KeyError:
|
|
# in case there is no stroke width yet therefore no aperture
|
|
apertures_dict['0'] = {
|
|
'size': round(applied_size, 5),
|
|
'type': 'C',
|
|
'geometry': []
|
|
}
|
|
|
|
for pdf_geo in fill_geo:
|
|
if isinstance(pdf_geo, MultiPolygon):
|
|
for poly in pdf_geo:
|
|
new_el = {'solid': poly, 'follow': poly.exterior}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
else:
|
|
new_el = {'solid': pdf_geo, 'follow': pdf_geo.exterior}
|
|
apertures_dict['0']['geometry'].append(deepcopy(new_el))
|
|
|
|
continue
|
|
|
|
# tidy up. copy the current aperture dict to the object dict but only if it is not empty
|
|
if apertures_dict:
|
|
object_dict[layer_nr] = deepcopy(apertures_dict)
|
|
|
|
if clear_apertures_dict['0']['geometry']:
|
|
object_dict[0] = deepcopy(clear_apertures_dict)
|
|
|
|
# delete keys (layers) with empty values
|
|
empty_layers = []
|
|
for layer in object_dict:
|
|
if not object_dict[layer]:
|
|
empty_layers.append(layer)
|
|
for x in empty_layers:
|
|
if x in object_dict:
|
|
object_dict.pop(x)
|
|
|
|
if self.app.abort_flag:
|
|
# graceful abort requested by the user
|
|
raise grace
|
|
|
|
return object_dict
|
|
|
|
def bezier_to_points(self, start, c1, c2, stop):
|
|
"""
|
|
# Equation Bezier, page 184 PDF 1.4 reference
|
|
# https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/pdf_reference_archives/PDFReference.pdf
|
|
# Given the coordinates of the four points, the curve is generated by varying the parameter t from 0.0 to 1.0
|
|
# in the following equation:
|
|
# R(t) = P0*(1 - t) ** 3 + P1*3*t*(1 - t) ** 2 + P2 * 3*(1 - t) * t ** 2 + P3*t ** 3
|
|
# When t = 0.0, the value from the function coincides with the current point P0; when t = 1.0, R(t) coincides
|
|
# with the final point P3. Intermediate values of t generate intermediate points along the curve.
|
|
# The curve does not, in general, pass through the two control points P1 and P2
|
|
|
|
:return: A list of point coordinates tuples (x, y)
|
|
"""
|
|
|
|
# here we store the geometric points
|
|
points = []
|
|
|
|
nr_points = np.arange(0.0, 1.0, (1 / self.step_per_circles))
|
|
for t in nr_points:
|
|
term_p0 = (1 - t) ** 3
|
|
term_p1 = 3 * t * (1 - t) ** 2
|
|
term_p2 = 3 * (1 - t) * t ** 2
|
|
term_p3 = t ** 3
|
|
|
|
x = start[0] * term_p0 + c1[0] * term_p1 + c2[0] * term_p2 + stop[0] * term_p3
|
|
y = start[1] * term_p0 + c1[1] * term_p1 + c2[1] * term_p2 + stop[1] * term_p3
|
|
points.append([x, y])
|
|
|
|
return points
|
|
|
|
# def bezier_to_circle(self, path):
|
|
# lst = []
|
|
# for el in range(len(path)):
|
|
# if type(path) is list:
|
|
# for coord in path[el]:
|
|
# lst.append(coord)
|
|
# else:
|
|
# lst.append(el)
|
|
#
|
|
# if lst:
|
|
# minx = min(lst, key=lambda t: t[0])[0]
|
|
# miny = min(lst, key=lambda t: t[1])[1]
|
|
# maxx = max(lst, key=lambda t: t[0])[0]
|
|
# maxy = max(lst, key=lambda t: t[1])[1]
|
|
# center = (maxx-minx, maxy-miny)
|
|
# radius = (maxx-minx) / 2
|
|
# return [center, radius]
|
|
#
|
|
# def circle_to_points(self, center, radius):
|
|
# geo = Point(center).buffer(radius, resolution=self.step_per_circles)
|
|
# return LineString(list(geo.exterior.coords))
|
|
#
|