2019-04-19 14:12:10 +00:00
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############################################################
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# FlatCAM: 2D Post-processing for Manufacturing #
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# http://flatcam.org #
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# File Author: Marius Adrian Stanciu (c) #
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# Date: 3/10/2019 #
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# MIT Licence #
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############################################################
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from FlatCAMTool import FlatCAMTool
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2019-04-21 01:43:49 +00:00
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from shapely.geometry import Point, Polygon, LineString
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from shapely.ops import cascaded_union, unary_union
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2019-04-19 14:12:10 +00:00
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from FlatCAMObj import *
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2019-04-21 01:43:49 +00:00
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2019-04-19 14:12:10 +00:00
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import math
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2019-04-21 01:43:49 +00:00
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from copy import copy, deepcopy
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2019-04-19 14:12:10 +00:00
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import numpy as np
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import zlib
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import re
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import gettext
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import FlatCAMTranslation as fcTranslate
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import builtins
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2019-04-19 14:12:10 +00:00
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fcTranslate.apply_language('strings')
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if '_' not in builtins.__dict__:
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_ = gettext.gettext
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class ToolPDF(FlatCAMTool):
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"""
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2019-04-19 14:12:10 +00:00
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Parse a PDF file.
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Reference here: https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/pdf_reference_archives/PDFReference.pdf
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Return a list of geometries
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2019-04-21 01:43:49 +00:00
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"""
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2019-04-19 14:12:10 +00:00
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toolName = _("PDF Import Tool")
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def __init__(self, app):
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FlatCAMTool.__init__(self, app)
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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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self.stream_re = re.compile(b'.*?FlateDecode.*?stream(.*?)endstream', re.S)
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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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self.geo_buffer = []
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self.pdf_parsed = ''
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2019-04-21 01:43:49 +00:00
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# conversion factor to INCH
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self.point_to_unit_factor = 0.01388888888
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def run(self, toggle=True):
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self.app.report_usage("ToolPDF()")
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2019-04-21 01:43:49 +00:00
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# init variables for reuse
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self.geo_buffer = []
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self.pdf_parsed = ''
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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.ui.general_defaults_form.general_app_group.units_radio.get_value().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 = 0.35277777778
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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 = 0.01388888888
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self.set_tool_ui()
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self.on_open_pdf_click()
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def install(self, icon=None, separator=None, **kwargs):
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FlatCAMTool.install(self, icon, separator, shortcut='ALT+Q', **kwargs)
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def set_tool_ui(self):
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pass
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def on_open_pdf_click(self):
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"""
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File menu callback for opening an PDF file.
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:return: None
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"""
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self.app.report_usage("ToolPDF.on_open_pdf_click()")
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self.app.log.debug("ToolPDF.on_open_pdf_click()")
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_filter_ = "Adobe PDF Files (*.pdf);;" \
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"All Files (*.*)"
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try:
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filenames, _f = QtWidgets.QFileDialog.getOpenFileNames(caption=_("Open PDF"),
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directory=self.app.get_last_folder(),
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filter=_filter_)
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except TypeError:
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filenames, _f = QtWidgets.QFileDialog.getOpenFileNames(caption=_("Open PDF"), filter=_filter_)
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if len(filenames) == 0:
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self.app.inform.emit(_("[WARNING_NOTCL] Open PDF cancelled."))
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else:
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for filename in filenames:
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if filename != '':
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self.app.worker_task.emit({'fcn': self.open_pdf, 'params': [filename]})
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def open_pdf(self, filename):
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new_name = filename.split('/')[-1].split('\\')[-1]
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def obj_init(grb_obj, app_obj):
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with open(filename, "rb") as f:
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pdf = f.read()
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stream_nr = 0
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for s in re.findall(self.stream_re, pdf):
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stream_nr += 1
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log.debug(" PDF STREAM: %d\n" % stream_nr)
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s = s.strip(b'\r\n')
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try:
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self.pdf_parsed += (zlib.decompress(s).decode('UTF-8') + '\r\n')
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except Exception as e:
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app_obj.log.debug("ToolPDF.open_pdf().obj_init() --> %s" % str(e))
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ap_dict = self.parse_pdf(pdf_content=self.pdf_parsed)
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grb_obj.apertures = deepcopy(ap_dict)
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poly_buff = []
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for ap in ap_dict:
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for k in ap_dict[ap]:
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if k == 'solid_geometry':
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poly_buff += ap_dict[ap][k]
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poly_buff = unary_union(poly_buff)
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poly_buff = poly_buff.buffer(0.0000001)
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poly_buff = poly_buff.buffer(-0.0000001)
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grb_obj.solid_geometry = deepcopy(poly_buff)
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with self.app.proc_container.new(_("Opening PDF.")):
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ret = self.app.new_object("gerber", new_name, obj_init, autoselected=False)
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if ret == 'fail':
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self.app.inform.emit(_('[ERROR_NOTCL] Open PDF file failed.'))
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return
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# Register recent file
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self.app.file_opened.emit("gerber", new_name)
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# GUI feedback
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self.app.inform.emit(_("[success] Opened: %s") % filename)
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def parse_pdf(self, pdf_content):
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path = dict()
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path['lines'] = [] # it's a list of lines subpaths
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path['bezier'] = [] # it's a list of bezier arcs subpaths
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path['rectangle'] = [] # it's a list of rectangle subpaths
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subpath = dict()
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subpath['lines'] = [] # it's a list of points
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subpath['bezier'] = [] # it's a list of sublists each like this [start, c1, c2, stop]
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subpath['rectangle'] = [] # it's a list of sublists of points
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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 path)
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close_path = 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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c_offset_f= [0, 0]
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c_scale_f = [1, 1]
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# initial aperture
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aperture = 10
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# store the apertures here
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apertures_dict = {}
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# it seems that first transform apply to the whole PDF; signal here if it's first
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first_transform = True
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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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line_nr += 1
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log.debug("line %d: %s" % (line_nr, pline))
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# TRANSFORMATIONS DETECTION #
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# # Detect Scale transform
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# match = self.scale_re.search(pline)
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# if match:
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# log.debug(
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# "ToolPDF.parse_pdf() --> SCALE transformation found on line: %s --> %s" % (line_nr, pline))
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# if first_transform:
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# first_transform = False
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# c_scale_f = [float(match.group(1)), float(match.group(2))]
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# else:
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# scale_geo = [float(match.group(1)), float(match.group(2))]
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# continue
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# # Detect Offset transform
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# match = self.offset_re.search(pline)
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# if match:
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# log.debug(
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# "ToolPDF.parse_pdf() --> OFFSET transformation found on line: %s --> %s" % (line_nr, pline))
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# offset_geo = [float(match.group(1)), float(match.group(2))]
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# continue
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# Detect combined transformation. Must be always the last from transformations to be checked.
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match = self.combined_transform_re.search(pline)
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if match:
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# transformation = TRANSLATION (OFFSET)
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if (float(match.group(2)) == 0 and float(match.group(3)) == 0) and \
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(float(match.group(5)) != 0 or float(match.group(6)) != 0):
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log.debug(
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"ToolPDF.parse_pdf() --> OFFSET transformation found on line: %s --> %s" % (line_nr, pline))
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if first_transform:
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c_offset_f = [float(match.group(5)), float(match.group(6))]
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else:
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offset_geo = [float(match.group(5)), float(match.group(6))]
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# transformation = SCALING
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if float(match.group(1)) != 1 and float(match.group(4)) != 1:
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log.debug(
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"ToolPDF.parse_pdf() --> SCALE transformation found on line: %s --> %s" % (line_nr, pline))
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if first_transform:
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c_scale_f = [float(match.group(1)), float(match.group(4))]
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else:
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scale_geo = [float(match.group(1)), float(match.group(4))]
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if first_transform:
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first_transform = False
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continue
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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_path = 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
|
2019-04-21 01:43:49 +00:00
|
|
|
x = float(match.group(1)) + offset_geo[0]
|
|
|
|
y = float(match.group(2)) + offset_geo[1]
|
2019-04-22 00:28:05 +00:00
|
|
|
pt = (x * self.point_to_unit_factor * scale_geo[0] * c_scale_f[0],
|
|
|
|
y * self.point_to_unit_factor * scale_geo[1] * c_scale_f[1])
|
2019-04-21 01:43:49 +00:00
|
|
|
start_point = pt
|
2019-04-22 00:28:05 +00:00
|
|
|
|
|
|
|
# add the start point to subpaths
|
|
|
|
subpath['lines'].append(start_point)
|
|
|
|
# subpath['bezier'].append(start_point)
|
|
|
|
subpath['rectangle'].append(start_point)
|
|
|
|
current_point = start_point
|
2019-04-21 01:43:49 +00:00
|
|
|
continue
|
|
|
|
|
|
|
|
# Draw Line
|
|
|
|
match = self.draw_line_re.search(pline)
|
|
|
|
if match:
|
2019-04-22 00:28:05 +00:00
|
|
|
current_subpath = 'lines'
|
2019-04-21 01:43:49 +00:00
|
|
|
x = float(match.group(1)) + offset_geo[0]
|
|
|
|
y = float(match.group(2)) + offset_geo[1]
|
2019-04-22 00:28:05 +00:00
|
|
|
pt = (x * self.point_to_unit_factor * scale_geo[0] * c_scale_f[0],
|
|
|
|
y * self.point_to_unit_factor * scale_geo[1] * c_scale_f[1])
|
|
|
|
subpath['lines'].append(pt)
|
2019-04-21 01:43:49 +00:00
|
|
|
current_point = pt
|
|
|
|
continue
|
|
|
|
|
|
|
|
# Draw Bezier 'c'
|
|
|
|
match = self.draw_arc_3pt_re.search(pline)
|
|
|
|
if match:
|
2019-04-22 00:28:05 +00:00
|
|
|
current_subpath = 'bezier'
|
2019-04-21 01:43:49 +00:00
|
|
|
start = current_point
|
|
|
|
x = float(match.group(1)) + offset_geo[0]
|
|
|
|
y = float(match.group(2)) + offset_geo[1]
|
2019-04-22 00:28:05 +00:00
|
|
|
c1 = (x * self.point_to_unit_factor * scale_geo[0] * c_scale_f[0],
|
|
|
|
y * self.point_to_unit_factor * scale_geo[1] * c_scale_f[1])
|
2019-04-21 01:43:49 +00:00
|
|
|
x = float(match.group(3)) + offset_geo[0]
|
|
|
|
y = float(match.group(4)) + offset_geo[1]
|
2019-04-22 00:28:05 +00:00
|
|
|
c2 = (x * self.point_to_unit_factor * scale_geo[0] * c_scale_f[0],
|
|
|
|
y * self.point_to_unit_factor * scale_geo[1] * c_scale_f[1])
|
2019-04-21 01:43:49 +00:00
|
|
|
x = float(match.group(5)) + offset_geo[0]
|
|
|
|
y = float(match.group(6)) + offset_geo[1]
|
2019-04-22 00:28:05 +00:00
|
|
|
stop = (x * self.point_to_unit_factor * scale_geo[0] * c_scale_f[0],
|
|
|
|
y * self.point_to_unit_factor * scale_geo[1] * c_scale_f[1])
|
2019-04-21 01:43:49 +00:00
|
|
|
|
2019-04-22 00:28:05 +00:00
|
|
|
subpath['bezier'].append([start, c1, c2, stop])
|
2019-04-21 01:43:49 +00:00
|
|
|
current_point = stop
|
|
|
|
continue
|
|
|
|
|
|
|
|
# Draw Bezier 'v'
|
|
|
|
match = self.draw_arc_2pt_c1start_re.search(pline)
|
|
|
|
if match:
|
2019-04-22 00:28:05 +00:00
|
|
|
current_subpath = 'bezier'
|
2019-04-21 01:43:49 +00:00
|
|
|
start = current_point
|
|
|
|
x = float(match.group(1)) + offset_geo[0]
|
|
|
|
y = float(match.group(2)) + offset_geo[1]
|
2019-04-22 00:28:05 +00:00
|
|
|
c2 = (x * self.point_to_unit_factor * scale_geo[0] * c_scale_f[0],
|
|
|
|
y * self.point_to_unit_factor * scale_geo[1] * c_scale_f[1])
|
2019-04-21 01:43:49 +00:00
|
|
|
x = float(match.group(3)) + offset_geo[0]
|
|
|
|
y = float(match.group(4)) + offset_geo[1]
|
2019-04-22 00:28:05 +00:00
|
|
|
stop = (x * self.point_to_unit_factor * scale_geo[0] * c_scale_f[0],
|
|
|
|
y * self.point_to_unit_factor * scale_geo[1] * c_scale_f[1])
|
2019-04-21 01:43:49 +00:00
|
|
|
|
2019-04-22 00:28:05 +00:00
|
|
|
subpath['bezier'].append([start, start, c2, stop])
|
2019-04-21 01:43:49 +00:00
|
|
|
current_point = stop
|
|
|
|
continue
|
|
|
|
|
|
|
|
# Draw Bezier 'y'
|
|
|
|
match = self.draw_arc_2pt_c2stop_re.search(pline)
|
|
|
|
if match:
|
|
|
|
start = current_point
|
|
|
|
x = float(match.group(1)) + offset_geo[0]
|
|
|
|
y = float(match.group(2)) + offset_geo[1]
|
2019-04-22 00:28:05 +00:00
|
|
|
c1 = (x * self.point_to_unit_factor * scale_geo[0] * c_scale_f[0],
|
|
|
|
y * self.point_to_unit_factor * scale_geo[1] * c_scale_f[1])
|
2019-04-21 01:43:49 +00:00
|
|
|
x = float(match.group(3)) + offset_geo[0]
|
|
|
|
y = float(match.group(4)) + offset_geo[1]
|
2019-04-22 00:28:05 +00:00
|
|
|
stop = (x * self.point_to_unit_factor * scale_geo[0] * c_scale_f[0],
|
|
|
|
y * self.point_to_unit_factor * scale_geo[1] * c_scale_f[1])
|
2019-04-21 01:43:49 +00:00
|
|
|
|
2019-04-22 00:28:05 +00:00
|
|
|
subpath['bezier'].append([start, c1, stop, stop])
|
|
|
|
print(subpath['bezier'])
|
2019-04-21 01:43:49 +00:00
|
|
|
current_point = stop
|
|
|
|
continue
|
|
|
|
|
|
|
|
# Draw RECTANGLE
|
|
|
|
match = self.rect_re.search(pline)
|
|
|
|
if match:
|
2019-04-22 00:28:05 +00:00
|
|
|
current_subpath = 'rectangle'
|
|
|
|
x = (float(match.group(1)) + offset_geo[0]) * self.point_to_unit_factor * scale_geo[0] * c_scale_f[0]
|
|
|
|
y = (float(match.group(2)) + offset_geo[1]) * self.point_to_unit_factor * scale_geo[1] * c_scale_f[1]
|
|
|
|
width = (float(match.group(3)) + offset_geo[0]) * \
|
|
|
|
self.point_to_unit_factor * scale_geo[0] * c_scale_f[0]
|
|
|
|
height = (float(match.group(4)) + offset_geo[1]) * \
|
|
|
|
self.point_to_unit_factor * scale_geo[1] * c_scale_f[1]
|
2019-04-21 01:43:49 +00:00
|
|
|
pt1 = (x, y)
|
|
|
|
pt2 = (x+width, y)
|
|
|
|
pt3 = (x+width, y+height)
|
|
|
|
pt4 = (x, y+height)
|
2019-04-22 00:28:05 +00:00
|
|
|
# TODO: I'm not sure if rectangles are a subpath in themselves that autoclose
|
|
|
|
subpath['rectangle'] += [pt1, pt2, pt3, pt4, pt1]
|
2019-04-21 01:43:49 +00:00
|
|
|
current_point = pt1
|
|
|
|
continue
|
|
|
|
|
|
|
|
# Detect clipping path set
|
|
|
|
# ignore this and delete the current subpath
|
|
|
|
match = self.clip_path_re.search(pline)
|
|
|
|
if match:
|
2019-04-22 00:28:05 +00:00
|
|
|
subpath['lines'] = []
|
|
|
|
subpath['bezier'] = []
|
|
|
|
subpath['rectangle'] = []
|
|
|
|
# it measns that we've already added the subpath to path and we need to delete it
|
|
|
|
# clipping path is usually either rectangle or lines
|
|
|
|
if close_path is True:
|
|
|
|
close_path = False
|
|
|
|
if current_subpath == 'lines':
|
|
|
|
path['lines'].pop(-1)
|
|
|
|
if current_subpath == 'rectangle':
|
|
|
|
path['rectangle'].pop(-1)
|
|
|
|
continue
|
|
|
|
|
|
|
|
# Close SUBPATH
|
|
|
|
match = self.end_subpath_re.search(pline)
|
|
|
|
if match:
|
|
|
|
close_path = True
|
|
|
|
if current_subpath == 'lines':
|
|
|
|
subpath['lines'].append(start_point)
|
|
|
|
# since we are closing the subpath add it to the path, a path may have chained subpaths
|
|
|
|
path['lines'].append(copy(subpath['lines']))
|
|
|
|
subpath['lines'] = []
|
|
|
|
elif current_subpath == 'bezier':
|
|
|
|
# subpath['bezier'].append(start_point)
|
|
|
|
# since we are closing the subpath add it to the path, a path may have chained subpaths
|
|
|
|
path['bezier'].append(copy(subpath['bezier']))
|
|
|
|
subpath['bezier'] = []
|
|
|
|
elif current_subpath == 'rectangle':
|
|
|
|
subpath['rectangle'].append(start_point)
|
|
|
|
# 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'] = []
|
2019-04-21 01:43:49 +00:00
|
|
|
continue
|
|
|
|
|
|
|
|
# PATH PAINTING #
|
|
|
|
|
|
|
|
# Detect Stroke width / aperture
|
|
|
|
match = self.strokewidth_re.search(pline)
|
|
|
|
if match:
|
2019-04-22 00:28:05 +00:00
|
|
|
size = float(match.group(1))
|
|
|
|
# flag = 0
|
|
|
|
#
|
|
|
|
# if not apertures_dict:
|
|
|
|
# apertures_dict[str(aperture)] = dict()
|
|
|
|
# apertures_dict[str(aperture)]['size'] = size
|
|
|
|
# apertures_dict[str(aperture)]['type'] = 'C'
|
|
|
|
# apertures_dict[str(aperture)]['solid_geometry'] = []
|
|
|
|
# else:
|
|
|
|
# for k in apertures_dict:
|
|
|
|
# if size == apertures_dict[k]['size']:
|
|
|
|
# flag = 1
|
|
|
|
# break
|
|
|
|
# if flag == 0:
|
|
|
|
# aperture += 1
|
|
|
|
# apertures_dict[str(aperture)] = dict()
|
|
|
|
# apertures_dict[str(aperture)]['size'] = size
|
|
|
|
# apertures_dict[str(aperture)]['type'] = 'C'
|
|
|
|
# apertures_dict[str(aperture)]['solid_geometry'] = []
|
2019-04-21 01:43:49 +00:00
|
|
|
continue
|
|
|
|
|
|
|
|
# Detect No_Op command, ignore the current subpath
|
|
|
|
match = self.no_op_re.search(pline)
|
|
|
|
if match:
|
2019-04-22 00:28:05 +00:00
|
|
|
subpath['lines'] = []
|
|
|
|
subpath['bezier'] = []
|
|
|
|
subpath['rectangle'] = []
|
2019-04-21 01:43:49 +00:00
|
|
|
continue
|
|
|
|
|
|
|
|
# Stroke the path
|
|
|
|
match = self.stroke_path__re.search(pline)
|
|
|
|
if match:
|
2019-04-22 00:28:05 +00:00
|
|
|
# scale the size here; some PDF printers apply transformation after the size is declared
|
|
|
|
applied_size = size * scale_geo[0] * c_scale_f[0] * self.point_to_unit_factor
|
|
|
|
|
|
|
|
path_geo = list()
|
|
|
|
if current_subpath == 'lines':
|
|
|
|
if path['lines']:
|
|
|
|
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:
|
|
|
|
geo = copy(subpath['lines'])
|
|
|
|
geo = LineString(geo).buffer((float(applied_size) / 2), resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo)
|
|
|
|
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])
|
|
|
|
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:
|
|
|
|
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']:
|
|
|
|
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:
|
|
|
|
geo = copy(subpath['rectangle'])
|
|
|
|
geo = LineString(geo).buffer((float(applied_size) / 2), resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo)
|
|
|
|
subpath['rectangle'] = []
|
|
|
|
|
2019-04-21 01:43:49 +00:00
|
|
|
try:
|
2019-04-22 00:28:05 +00:00
|
|
|
apertures_dict[str(aperture)]['solid_geometry'] += path_geo
|
2019-04-21 01:43:49 +00:00
|
|
|
except KeyError:
|
|
|
|
# in case there is no stroke width yet therefore no aperture
|
2019-04-22 00:28:05 +00:00
|
|
|
apertures_dict[str(aperture)] = {}
|
|
|
|
apertures_dict[str(aperture)]['size'] = applied_size
|
|
|
|
apertures_dict[str(aperture)]['type'] = 'C'
|
|
|
|
apertures_dict[str(aperture)]['solid_geometry'] = []
|
|
|
|
apertures_dict[str(aperture)]['solid_geometry'] += path_geo
|
|
|
|
|
2019-04-21 01:43:49 +00:00
|
|
|
continue
|
|
|
|
|
|
|
|
# Fill the path
|
|
|
|
match = self.fill_path_re.search(pline)
|
2019-04-22 00:28:05 +00:00
|
|
|
if match:
|
|
|
|
# scale the size here; some PDF printers apply transformation after the size is declared
|
|
|
|
applied_size = size * scale_geo[0] * c_scale_f[0] * self.point_to_unit_factor
|
|
|
|
|
|
|
|
path_geo = list()
|
|
|
|
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_path is False:
|
|
|
|
geo.append(geo[0])
|
|
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo_el)
|
|
|
|
# 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_path is False:
|
|
|
|
geo.append(start_point)
|
|
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo_el)
|
|
|
|
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_path is False:
|
|
|
|
geo.append(geo[0])
|
|
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo_el)
|
|
|
|
# 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_path is False:
|
|
|
|
geo.append(start_point)
|
|
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo_el)
|
|
|
|
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_path is False:
|
|
|
|
geo.append(geo[0])
|
|
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo_el)
|
|
|
|
# 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_path is False:
|
|
|
|
geo.append(start_point)
|
|
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo_el)
|
|
|
|
subpath['rectangle'] = []
|
|
|
|
|
|
|
|
# we finished painting and also closed the path if it was the case
|
|
|
|
close_path = True
|
2019-04-21 01:43:49 +00:00
|
|
|
|
2019-04-22 00:28:05 +00:00
|
|
|
try:
|
|
|
|
apertures_dict['0']['solid_geometry'] += path_geo
|
|
|
|
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']['solid_geometry'] = []
|
|
|
|
apertures_dict['0']['solid_geometry'] += path_geo
|
|
|
|
continue
|
2019-04-21 01:43:49 +00:00
|
|
|
|
2019-04-22 00:28:05 +00:00
|
|
|
# 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] * c_scale_f[0] * self.point_to_unit_factor
|
|
|
|
|
|
|
|
path_geo = list()
|
|
|
|
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_path is False:
|
|
|
|
geo.append(geo[0])
|
|
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo_el)
|
|
|
|
# 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_path is False:
|
|
|
|
geo.append(start_point)
|
|
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo_el)
|
|
|
|
# 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':
|
2019-04-21 01:43:49 +00:00
|
|
|
geo = []
|
2019-04-22 00:28:05 +00:00
|
|
|
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_path is False:
|
|
|
|
geo.append(geo[0])
|
|
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo_el)
|
|
|
|
# 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_path is False:
|
|
|
|
geo.append(start_point)
|
|
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo_el)
|
|
|
|
# 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_path is False:
|
|
|
|
geo.append(geo[0])
|
|
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo_el)
|
|
|
|
# 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_path is False:
|
|
|
|
geo.append(start_point)
|
|
|
|
geo_el = Polygon(geo).buffer(0.0000001, resolution=self.step_per_circles)
|
|
|
|
path_geo.append(geo_el)
|
|
|
|
# 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_path = True
|
|
|
|
|
2019-04-21 01:43:49 +00:00
|
|
|
try:
|
2019-04-22 00:28:05 +00:00
|
|
|
apertures_dict['0']['solid_geometry'] += path_geo
|
2019-04-21 01:43:49 +00:00
|
|
|
except KeyError:
|
|
|
|
# in case there is no stroke width yet therefore no aperture
|
|
|
|
apertures_dict['0'] = {}
|
2019-04-22 00:28:05 +00:00
|
|
|
apertures_dict['0']['size'] = applied_size
|
2019-04-21 01:43:49 +00:00
|
|
|
apertures_dict['0']['type'] = 'C'
|
2019-04-22 00:28:05 +00:00
|
|
|
apertures_dict['0']['solid_geometry'] = []
|
|
|
|
apertures_dict['0']['solid_geometry'] += path_geo
|
2019-04-21 01:43:49 +00:00
|
|
|
continue
|
|
|
|
return apertures_dict
|
|
|
|
|
|
|
|
def bezier_to_points(self, start, c1, c2, stop):
|
|
|
|
"""
|
|
|
|
# Equation Bezier, page 184 PDF 1.4 reference
|
2019-04-19 14:12:10 +00:00
|
|
|
# https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/pdf_reference_archives/PDFReference.pdf
|
2019-04-21 01:43:49 +00:00
|
|
|
# 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
|
2019-04-19 14:12:10 +00:00
|
|
|
|
2019-04-21 01:43:49 +00:00
|
|
|
:return: LineString geometry
|
|
|
|
"""
|
2019-04-19 14:12:10 +00:00
|
|
|
|
2019-04-21 01:43:49 +00:00
|
|
|
# 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))
|
|
|
|
#
|