Thu, 24 May 2018 23:22:37 +0200
[plotter] flake8
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1 | # -*- coding: utf-8 -*- |
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2 | # This program is free software; you can redistribute it and/or modify it under |
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3 | # the terms of the GNU General Public License as published by the Free Software |
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4 | # Foundation; either version 2 of the License, or (at your option) any later |
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5 | # version. |
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6 | # |
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7 | # This program is distributed in the hope that it will be useful, but WITHOUT |
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8 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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9 | # FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details |
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10 | # |
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11 | # You should have received a copy of the GNU General Public License along with |
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12 | # this program; if not, write to the Free Software Foundation, Inc., |
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13 | # 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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14 | """ Copyright (c) 2007-2018 David Douard (Paris, FRANCE). |
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15 | https://bitbucket.org/dddouard/pygpibtoolkit -- mailto:david.douard@sdfa3.orgx |
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16 | """ |
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17 | |
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18 | import re |
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19 | import numpy |
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20 | |
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21 | vsplitter = re.compile('[ ,]') |
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22 | vextractor = re.compile( |
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23 | r'(?P<value>[^;\n\r\aA-DF-Za-df-z]*?)(?P<terminator>[;\n\r\a]+)', |
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24 | re.S + re.M) |
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25 | |
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26 | |
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27 | class HPGLParser: |
19 | 28 | def __init__(self, data=None): |
29 | self.str_terminator = chr(0x03) | |
30 | self.IN() | |
31 | if data: | |
32 | self.parse(data) | |
33 | ||
34 | def parse(self, data): | |
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35 | self.data = data |
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36 | self.idx = 0 |
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37 | self.IN() |
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38 | while self.idx < len(data): |
104 | 39 | while data[self.idx] in ';\n\r\a ': |
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40 | self.idx += 1 |
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41 | if data[self.idx] == chr(0x03): |
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42 | self.ESC() |
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43 | else: |
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44 | cmd = data[self.idx: self.idx+2].upper() |
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45 | self.idx += 2 |
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46 | try: |
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47 | getattr(self, cmd)() |
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48 | except AttributeError: |
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49 | print("WARNING: received unknown command %s" % repr(cmd)) |
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50 | |
104 | 51 | while self.idx < len(data) and data[self.idx] in ';\n\r\a ': |
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52 | self.idx += 1 |
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53 | |
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54 | def user_to_abs(self, pos): |
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55 | """ |
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56 | converts a position (x, y) given in user units to absolute |
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57 | units |
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58 | """ |
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59 | return pos # TODO |
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60 | |
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61 | def extract_value(self, raw=False): |
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62 | m = vextractor.match(self.data[self.idx:]) |
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63 | if m: |
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64 | val = m.group("value") |
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65 | self.idx = self.idx + len(val) + len(m.group("terminator")) |
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66 | val = vsplitter.split(val) |
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67 | if not raw: |
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68 | val = [eval(x) for x in val if x.strip()] |
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69 | return val |
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70 | return [] |
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71 | |
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72 | def extract_string(self): |
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73 | idx2 = self.data.find(self.str_terminator, self.idx) |
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74 | val = self.data[self.idx: idx2] |
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75 | self.idx = idx2+1 |
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76 | return val |
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77 | |
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78 | def polyline(self, values): |
104 | 79 | if (len(values) % 2) == 1: |
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80 | # this is a syntax error in the HPGL data |
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81 | values = values[:-1] |
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82 | values = numpy.array(values).reshape(-1, 2) |
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83 | # TODO use scaling |
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84 | # do plots |
104 | 85 | values = numpy.r_[[self.pos], values] # add self.pos as 1st value |
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86 | if self.plot_mode == 'relative': |
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87 | values = values.cumsum(axis=0) |
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88 | if self.symbol_mode: |
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89 | self.plot_symbols(values[1:]) |
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90 | if self.pen_state == "down": |
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91 | self.plot_lines(values) |
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92 | self.pos = values[-1] |
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93 | |
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94 | def plot_string(self, s): |
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95 | pass |
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96 | |
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97 | def get_window_for_paper(self): |
104 | 98 | return (0, 100, 0, 100) |
99 | ||
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100 | def get_scaling_points_for_paper(self): |
104 | 101 | return (0, 100, 0, 100) |
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102 | |
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103 | # effective plot methods; to be defined in subclasses (backends) |
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104 | def plot_symbols(self, points): |
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105 | pass |
104 | 106 | |
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107 | def plot_lines(self, points): |
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108 | pass |
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109 | |
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110 | # HPGL-related methods |
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111 | def ESC(self): |
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112 | self.idx += 1 |
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113 | |
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114 | def OE(self): |
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115 | """ Output Error """ |
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116 | pass |
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117 | |
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118 | def EC(self): |
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119 | """? what's this """ |
104 | 120 | # values = self.extract_value() |
121 | pass | |
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122 | |
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123 | def OO(self): |
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124 | """idem""" |
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125 | pass |
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126 | |
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127 | def OP(self): |
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128 | """idem""" |
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129 | pass |
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130 | |
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131 | def VS(self): |
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132 | """idem""" |
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133 | pass |
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134 | |
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135 | def DF(self): |
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136 | """ Default """ |
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137 | self.pen = 0 |
104 | 138 | self.pen_width = 1 # 1/300 inch |
139 | self.pos = (0, 0) | |
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140 | self.char_set = "std" |
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141 | self.plot_mode = 'absolute' |
104 | 142 | self.char_direction = (1, 0) |
143 | self.line_type = 0 # 'solid' | |
144 | self.pattern_len = 4 # percentage | |
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145 | self.window = self.get_window_for_paper() |
104 | 146 | self.char_size = (0.75, 1.5) # percentages |
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147 | self.symbol_mode = False |
104 | 148 | self.tick_len = (0.5, 0.5) # % |
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149 | self.std_char_set = 0 |
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150 | self.alt_char_set = 0 |
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151 | self.selected_char_set = 0 |
104 | 152 | self.char_slant = 0 # degrees |
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153 | self.scale = None |
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154 | self.str_terminator = chr(0x03) |
104 | 155 | self.chord_ang = 5 # degrees |
156 | self.fill_type = ('bidirectionnal', 1) | |
157 | self.fill_distance = 1 # % | |
158 | self.fill_slant = 0 # degrees | |
159 | self.pen_thickness = 0.3 # mm | |
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160 | |
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161 | def IN(self): |
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162 | """ Initialize """ |
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163 | self.DF() |
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164 | self.pen_state = "up" |
104 | 165 | self.rotation = 0 # degrees |
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166 | self.scaling_points = self.get_scaling_points_for_paper() |
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167 | |
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168 | def IP(self): |
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169 | """ Input Scale Point""" |
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170 | values = self.extract_value() |
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171 | if len(values) == 0: |
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172 | self.scaling_points = self.get_scaling_points_for_paper() |
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173 | elif len(values) == 2: |
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174 | p1x, p1y, p2x, p2y = self.scaling_points |
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175 | dx, dy = p2x-p1x, p2y-p1y |
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176 | x, y = values |
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177 | self.scaling = (x, y, x+dx, y+dy) |
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178 | elif len(values) == 4: |
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179 | self.values = tuple(values) |
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180 | |
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181 | def SC(self): |
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182 | """ Scale """ |
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183 | values = self.extract_value() |
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184 | if len(values) == 4: |
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185 | self.scale = tuple(values) |
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186 | else: |
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187 | self.scale = None |
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188 | |
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189 | def IW(self): |
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190 | values = self.extract_value() |
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191 | if len(values) == 0: |
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192 | self.window = self.get_window_for_paper() |
104 | 193 | elif len(values) == 4: |
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194 | self.window = tuple(values) |
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195 | |
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196 | def RO(self): |
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197 | values = self.extract_value() |
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198 | if len(values) == 0: |
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199 | self.rotation = 0 |
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200 | elif len(values) == 1: |
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201 | self.rotation = values[0] |
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202 | |
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203 | def PG(self): |
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204 | pass |
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205 | |
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206 | def PU(self): |
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207 | """ Pen Up""" |
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208 | self.pen_state = "up" |
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209 | values = self.extract_value() |
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210 | self.polyline(values) |
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211 | |
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212 | def PD(self): |
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213 | """ Pen Down """ |
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214 | self.pen_state = "down" |
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215 | values = self.extract_value() |
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216 | self.polyline(values) |
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217 | |
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218 | def PA(self): |
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219 | """ Plot Absolute """ |
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220 | self.plot_mode = "absolute" |
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221 | values = self.extract_value() |
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222 | self.polyline(values) |
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223 | |
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224 | def PR(self): |
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225 | """ Plot Relative """ |
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226 | self.plot_mode = "relative" |
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227 | values = self.extract_value() |
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228 | self.polyline(values) |
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229 | |
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230 | def AA(self): |
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231 | """ Arc Absolute """ |
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232 | values = self.extract_value() |
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233 | if len(values) in [3, 4]: |
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234 | x, y, qc = values[:3] |
104 | 235 | if len(values) == 4: |
236 | qd = values[-1] # noqa | |
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237 | else: |
104 | 238 | qd = self.chord_ang # noqa |
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239 | # TODO : plot arc |
104 | 240 | # print("plotting an arc") |
241 | ||
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242 | def AR(self): |
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243 | """ Arc Relative """ |
104 | 244 | # values = self.extract_value() |
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245 | # TODO |
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246 | |
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247 | def CI(self): |
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248 | """ Circle Plot""" |
104 | 249 | # values = self.extract_value() |
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250 | # TODO |
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251 | |
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252 | def EA(self): |
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253 | """Edge Rectangle Absolute""" |
104 | 254 | # values = self.extract_value() |
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255 | # TODO |
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256 | |
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257 | def ER(self): |
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258 | """Edge Rectangle Relative""" |
104 | 259 | # values = self.extract_value() |
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260 | # TODO |
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261 | |
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262 | def EW(self): |
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263 | """ Edge Wedge """ |
104 | 264 | # values = self.extract_value() |
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265 | # TODO |
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266 | |
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267 | def RA(self): |
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268 | """ Fill Rectangle Absolute """ |
104 | 269 | # values = self.extract_value() |
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270 | # TODO |
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271 | |
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272 | def RR(self): |
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273 | """ Fill Rectangle Relative """ |
104 | 274 | # values = self.extract_value() |
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275 | # TODO |
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276 | |
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277 | def WG(self): |
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278 | """ Fill Wedge """ |
104 | 279 | # values = self.extract_value() |
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280 | # TODO |
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281 | |
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282 | def FT(self): |
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283 | """ Fill Type """ |
104 | 284 | # values = self.extract_value() |
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285 | # TODO |
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286 | |
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287 | def LT(self): |
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288 | """ Line Type """ |
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289 | values = self.extract_value() |
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290 | |
104 | 291 | if len(values) == 0: |
292 | self.line_type = 0 # 'solid' | |
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293 | else: |
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294 | self.line_type = values[0] |
104 | 295 | if len(values) > 1: |
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296 | self.pattern_len = values[1] |
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297 | |
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298 | def PW(self): |
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299 | """ Pen Width """ |
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300 | values = self.extract_value() |
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301 | if len(values) == 1: |
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302 | self.pen_thickness = values[0] |
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303 | |
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304 | def SM(self): |
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305 | """ Symbol Mode """ |
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306 | values = self.extract_value() |
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307 | if len(values) == 0: |
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308 | self.symbol_mode = False |
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309 | elif len(values) == 1: |
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310 | self.symbol_mode = values[0] |
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311 | |
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312 | def SP(self): |
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313 | """ Select Pen """ |
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314 | values = self.extract_value() |
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315 | if len(values) == 1: |
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316 | self.pen = values[0] |
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317 | |
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318 | def TL(self): |
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319 | """ Tick Len """ |
104 | 320 | # values = self.extract_value() |
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321 | # TODO |
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322 | |
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323 | def XT(self): |
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324 | """ X-axis Tick """ |
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325 | # TODO |
104 | 326 | # print("X ticks") |
327 | pass | |
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328 | |
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329 | def YT(self): |
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330 | """ X-axis Tick """ |
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331 | # TODO |
104 | 332 | # print("Y ticks") |
333 | pass | |
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334 | |
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335 | def PT(self): |
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336 | """ Pen Thickness Select """ |
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337 | values = self.extract_value() |
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338 | if len(values) == 0: |
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339 | self.pen_thickness = 0.3 |
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340 | elif len(values) == 1: |
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341 | self.pen_thickness = values[0] |
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342 | |
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343 | def CS(self): |
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344 | """ Standard Character Set """ |
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345 | values = self.extract_value() |
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346 | if len(values) == 0: |
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347 | self.std_char_set = 0 |
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348 | elif len(values) == 1: |
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349 | self.std_char_set = values[0] |
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350 | |
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351 | def CA(self): |
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352 | """ Alternate Character Set """ |
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353 | values = self.extract_value() |
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354 | if len(values) == 0: |
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355 | self.alt_char_set = 0 |
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356 | elif len(values) == 1: |
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357 | self.alt_char_set = values[0] |
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358 | |
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359 | def SS(self): |
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360 | """ Select Standard Character Set """ |
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361 | self.char_set = "std" |
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362 | |
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363 | def SA(self): |
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364 | """ Select Alternate Character Set """ |
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365 | self.char_set = "alt" |
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366 | |
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367 | def DT(self): |
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368 | """ Define Label Terminator """ |
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369 | values = self.extract_value(raw=True) |
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370 | if len(values) == 0: |
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371 | self.str_terminator = chr(0x03) |
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372 | elif len(values) == 1: |
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373 | self.str_terminator = values[0] |
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374 | |
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375 | def LB(self): |
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376 | """ Character Plot """ |
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377 | values = self.extract_string() |
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378 | self.plot_string(values) |
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379 | x, y = self.pos |
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380 | values = values.split('\n') |
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381 | if self.char_size == "absolute": |
104 | 382 | x += len(values[-1]) * self.char_width * 1016 / 2.54 |
383 | y += (len(values)-1) * self.char_height * 1016 / 2.54 | |
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384 | else: |
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385 | x0, x1, y0, y1 = self.scale |
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386 | dx = x1-x0 |
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387 | dy = y1-y0 |
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388 | x += len(values[-1]) * self.char_width / 100.0 * dx |
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389 | y += (len(values)-1) * self.char_height / 100.0 * dy |
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390 | |
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391 | self.pos = [x, y] |
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392 | |
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393 | def get_char_size(self): |
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394 | if self.char_size == "absolute": |
104 | 395 | x = self.char_width * 1016 / 2.54 |
396 | y = self.char_height * 1016 / 2.54 | |
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397 | else: |
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398 | x0, x1, y0, y1 = self.scale |
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399 | dx = x1-x0 |
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400 | dy = y1-y0 |
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401 | x = self.char_width / 100.0 * dx |
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402 | y = self.char_height / 100.0 * dy |
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403 | return x, y |
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404 | |
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405 | def DI(self): |
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406 | """ Absolute Direction """ |
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407 | values = self.extract_value() |
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408 | if len(values) == 0: |
104 | 409 | self.char_direction = (1.0, 0.0) |
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410 | elif len(values) == 2: |
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411 | self.char_direction = values |
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412 | |
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413 | def DR(self): |
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414 | """ Relative Direction """ |
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415 | values = self.extract_value() |
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416 | if len(values) == 0: |
104 | 417 | self.char_direction = (1.0, 0.0) |
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418 | elif len(values) == 2: |
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419 | # TODO : compute as percentages |
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420 | self.char_direction = values |
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421 | |
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422 | def CP(self): |
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423 | """ Character Plot """ |
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424 | values = self.extract_value() |
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425 | # TODO |
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426 | if len(values) == 0: |
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427 | values = 0, 1 |
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428 | x, y = self.pos |
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429 | if self.char_size == "absolute": |
104 | 430 | x += values[0] * self.char_width * 1016 / 2.54 |
431 | y += values[1] * self.char_height * 1016 / 2.54 | |
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432 | else: |
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433 | x0, x1, y0, y1 = self.scale |
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434 | dx = x1-x0 |
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435 | dy = y1-y0 |
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436 | x += values[0] * self.char_width / 100.0 * dx |
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437 | y += values[1] * self.char_height / 100.0 * dy |
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438 | self.pos = [x, y] |
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439 | |
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440 | def SI(self): |
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441 | """ Set Absolute Character Size """ |
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442 | values = self.extract_value() |
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443 | self.char_size = "absolute" |
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444 | if len(values) == 0: |
104 | 445 | self.char_width = 0.1879 # cm |
446 | self.char_height = 0.2690 # cm | |
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447 | elif len(values) == 2: |
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448 | self.char_width, self.char_height = values |
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449 | |
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450 | def SR(self): |
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451 | """ Set Relative Character Size """ |
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452 | values = self.extract_value() |
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453 | self.char_size = "relative" |
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454 | if len(values) == 0: |
104 | 455 | self.char_width = 0.75 # percentage |
456 | self.char_height = 1.5 # id | |
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457 | elif len(values) == 2: |
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458 | self.char_width, self.char_height = values |
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459 | |
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460 | def SL(self): |
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461 | """ Character Slant """ |
104 | 462 | # values = self.extract_value() |
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463 | # TODO |
104 | 464 | pass |
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465 | |
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466 | def UC(self): |
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467 | """ User Defined Character """ |
104 | 468 | # values = self.extract_value() |
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469 | # TODO |
104 | 470 | pass |
471 | ||
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472 | |
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473 | if __name__ == '__main__': |
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474 | import sys |
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475 | data = open(sys.argv[1]).read() |
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476 | |
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477 | p = HPGLParser(data) |