plotter/hpgl_parser.py

Mon, 04 Feb 2008 19:49:48 +0100

author
David Douard <david.douard@logilab.fr>
date
Mon, 04 Feb 2008 19:49:48 +0100
changeset 39
8becd52c2171
parent 34
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permissions
-rw-r--r--

refactoring in progress

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1 # -*- coding: utf-8 -*-
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2
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3 import re
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4 import numpy
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5
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6 vsplitter = re.compile('[ ,]')
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7 vextractor = re.compile('(?P<value>[^;\n\r\aA-DF-Za-df-z]*?)(?P<terminator>[;\n\r\a]+)', re.S+re.M)
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8
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9 class HPGLParser(object):
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10 def __init__(self, data=None):
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11 self.str_terminator = chr(0x03)
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12 self.IN()
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13 if data:
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14 self.parse(data)
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15
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16 def parse(self, data):
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17 self.data = data
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18 self.idx = 0
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19 self.IN()
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20 while self.idx<len(data):
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21 while data[self.idx] in [';','\n','\r', '\a', ' ']:
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22 self.idx += 1
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23 if data[self.idx] == chr(0x03):
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24 self.ESC()
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25 else:
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26 cmd = data[self.idx: self.idx+2].upper()
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27 self.idx += 2
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28 getattr(self, cmd)()
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29 while self.idx<len(data) and data[self.idx] in [';','\n','\r', '\a', ' ']:
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30 self.idx += 1
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31
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32 def user_to_abs(self, pos):
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33 """
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34 converts a position (x, y) given in user units to absolute
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35 units
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36 """
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37 return pos #TODO
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38
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39 def extract_value(self, raw=False):
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40 m = vextractor.match(self.data[self.idx:])
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41 if m:
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42 val = m.group("value")
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43 self.idx = self.idx + len(val) + len(m.group("terminator"))
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44 val = vsplitter.split(val)
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45 if not raw:
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46 val = [eval(x) for x in val if x.strip()]
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47 return val
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48 return []
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49
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50 def extract_string(self):
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51 idx2 = self.data.find(self.str_terminator, self.idx)
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52 val = self.data[self.idx: idx2]
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53 self.idx = idx2+1
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54 return val
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55
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56 def polyline(self, values):
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57 if (len(values)%2) == 1:
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58 # this is a syntax error in the HPGL data
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59 values = values[:-1]
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60 values = numpy.array(values).reshape(-1, 2)
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61 # TODO use scaling
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62 # do plots
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63 values = numpy.r_[[self.pos], values] #add self.pos as 1st value
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64 if self.plot_mode == 'relative':
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65 values = values.cumsum(axis=0)
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66 if self.symbol_mode:
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67 self.plot_symbols(values[1:])
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68 if self.pen_state == "down":
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69 self.plot_lines(values)
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70 self.pos = values[-1]
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71
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72 def plot_string(self, s):
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73 pass
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74
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75 def get_window_for_paper(self):
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76 return 0,100,0,100
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77 def get_scaling_points_for_paper(self):
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78 return 0,100,0,100
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79
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80 # effective plot methods; to be defined in subclasses (backends)
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81 def plot_symbols(self, points):
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82 pass
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83 def plot_lines(self, points):
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84 pass
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85
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86 # HPGL-related methods
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87 def ESC(self):
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88 #print "ESC"
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89 self.idx += 1
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90
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91 def OE(self):
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92 """ Output Error """
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93 pass
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94
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95 def EC(self):
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96 """? what's this """
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97 values = self.extract_value()
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98
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99 def OO(self):
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100 """idem"""
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101 pass
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102
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103 def OP(self):
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104 """idem"""
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105 pass
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106
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107 def VS(self):
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108 """idem"""
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109 pass
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110
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111
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112 def DF(self):
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113 """ Default """
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114 self.pen = 0
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115 self.pen_width = 1 # 1/300 inch
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116 self.pos = 0,0
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117 self.char_set = "std"
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118 self.plot_mode = 'absolute'
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119 self.char_direction = 1,0
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120 self.line_type = 0 # 'solid'
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121 self.pattern_len = 4 #percentage
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122 self.window = self.get_window_for_paper()
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123 self.char_size = 0.75, 1.5 #percentages
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124 self.symbol_mode = False
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125 self.tick_len = 0.5, 0.5 # %
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126 self.std_char_set = 0
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127 self.alt_char_set = 0
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128 self.selected_char_set = 0
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129 self.char_slant = 0 # degrees
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130 self.scale = None
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diff changeset
131 self.str_terminator = chr(0x03)
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132 self.chord_ang = 5 #degrees
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133 self.fill_type = 'bidirectionnal', 1
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134 self.fill_distance = 1 # %
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135 self.fill_slant = 0 # degrees
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136 self.pen_thickness = 0.3 # mm
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137
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138 def IN(self):
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139 """ Initialize """
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140 self.DF()
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141 self.pen_state = "up"
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142 self.rotation = 0 #degrees
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143 self.scaling_points = self.get_scaling_points_for_paper()
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144
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145 def IP(self):
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146 """ Input Scale Point"""
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147 values = self.extract_value()
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148 if len(values) == 0:
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149 self.scaling_points = self.get_scaling_points_for_paper()
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150 elif len(values) == 2:
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151 p1x, p1y, p2x, p2y = self.scaling_points
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152 dx, dy = p2x-p1x, p2y-p1y
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153 x, y = values
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154 self.scaling = (x, y, x+dx, y+dy)
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155 elif len(values) == 4:
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156 self.values = tuple(values)
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157
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158 def SC(self):
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159 """ Scale """
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160 values = self.extract_value()
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161 if len(values) == 4:
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162 self.scale = tuple(values)
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163 else:
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164 self.scale = None
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165
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166 def IW(self):
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167 values = self.extract_value()
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168 if len(values) == 0:
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169 self.window = self.get_window_for_paper()
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170 elif len(value) == 4:
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171 self.window = tuple(values)
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172
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173 def RO(self):
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174 values = self.extract_value()
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175 if len(values) == 0:
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176 self.rotation = 0
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177 elif len(values) == 1:
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178 self.rotation = values[0]
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179
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David Douard <david.douard@logilab.fr>
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180 def PG(self):
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181 pass
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182
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183 def PU(self):
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184 """ Pen Up"""
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185 self.pen_state = "up"
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186 values = self.extract_value()
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187 self.polyline(values)
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188
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189 def PD(self):
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190 """ Pen Down """
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191 self.pen_state = "down"
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192 values = self.extract_value()
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193 self.polyline(values)
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194
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195 def PA(self):
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196 """ Plot Absolute """
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197 self.plot_mode = "absolute"
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198 values = self.extract_value()
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199 self.polyline(values)
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200
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201 def PR(self):
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diff changeset
202 """ Plot Relative """
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203 self.plot_mode = "relative"
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204 values = self.extract_value()
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205 self.polyline(values)
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206
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David Douard <david.douard@logilab.fr>
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207 def AA(self):
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208 """ Arc Absolute """
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209 values = self.extract_value()
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parents:
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210 if len(values) in [3, 4]:
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parents:
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211 x, y, qc = values[:3]
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212 if len(values)==4:
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213 qd = values[-1]
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214 else:
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215 qd = self.chord_ang
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parents:
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216 # TODO : plot arc
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217 print "plotting an arc"
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218 def AR(self):
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parents:
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219 """ Arc Relative """
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220 values = self.extract_value()
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parents:
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221 # TODO
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
222
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David Douard <david.douard@logilab.fr>
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223 def CI(self):
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parents:
diff changeset
224 """ Circle Plot"""
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diff changeset
225 values = self.extract_value()
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parents:
diff changeset
226 # TODO
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David Douard <david.douard@logilab.fr>
parents:
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227
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David Douard <david.douard@logilab.fr>
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228 def EA(self):
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229 """Edge Rectangle Absolute"""
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230 values = self.extract_value()
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parents:
diff changeset
231 # TODO
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
232
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David Douard <david.douard@logilab.fr>
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233 def ER(self):
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parents:
diff changeset
234 """Edge Rectangle Relative"""
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parents:
diff changeset
235 values = self.extract_value()
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
236 # TODO
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
237
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David Douard <david.douard@logilab.fr>
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238 def EW(self):
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
239 """ Edge Wedge """
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
240 values = self.extract_value()
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
241 # TODO
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
242
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
243 def RA(self):
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parents:
diff changeset
244 """ Fill Rectangle Absolute """
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parents:
diff changeset
245 values = self.extract_value()
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
246 # TODO
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
247
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David Douard <david.douard@logilab.fr>
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diff changeset
248 def RR(self):
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parents:
diff changeset
249 """ Fill Rectangle Relative """
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parents:
diff changeset
250 values = self.extract_value()
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David Douard <david.douard@logilab.fr>
parents:
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251 # TODO
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
252
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
253 def WG(self):
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
254 """ Fill Wedge """
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
255 values = self.extract_value()
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
256 # TODO
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
257
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
258 def FT(self):
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
259 """ Fill Type """
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
260 values = self.extract_value()
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
261 # TODO
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
262
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
263 def LT(self):
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
264 """ Line Type """
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
265 values = self.extract_value()
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
266
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
267 if len(values)==0:
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
268 self.line_type = 0 #'solid'
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
269 else:
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
270 self.line_type = values[0]
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
271 if len(values)>1:
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
272 self.pattern_len = values[1]
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
273
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
274 def PW(self):
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
275 """ Pen Width """
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
276 values = self.extract_value()
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
277 if len(values) == 1:
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
278 self.pen_thickness = values[0]
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
279
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
280 def SM(self):
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
281 """ Symbol Mode """
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
282 values = self.extract_value()
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
283 if len(values) == 0:
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
284 self.symbol_mode = False
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
285 elif len(values) == 1:
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
286 self.symbol_mode = values[0]
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
287
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
288 def SP(self):
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
289 """ Select Pen """
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
290 values = self.extract_value()
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
291 if len(values) == 1:
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
292 self.pen = values[0]
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
293
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
294 def TL(self):
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
295 """ Tick Len """
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
296 values = self.extract_value()
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
297 # TODO
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
298
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
299 def XT(self):
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
300 """ X-axis Tick """
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
301 # TODO
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
302 print "X ticks"
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
303
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
304 def YT(self):
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
305 """ X-axis Tick """
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
306 # TODO
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
307 print "Y ticks"
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
308
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
309 def PT(self):
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
310 """ Pen Thickness Select """
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
311 values = self.extract_value()
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
312 if len(values) == 0:
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
313 self.pen_thickness = 0.3
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
314 elif len(values) == 1:
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
315 self.pen_thickness = values[0]
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
316
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
317 def CS(self):
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
318 """ Standard Character Set """
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
319 values = self.extract_value()
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
320 if len(values) == 0:
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
321 self.std_char_set = 0
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
322 elif len(values) == 1:
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
323 self.std_char_set = values[0]
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
324
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
325 def CA(self):
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
326 """ Alternate Character Set """
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
327 values = self.extract_value()
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
328 if len(values) == 0:
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
329 self.alt_char_set = 0
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
330 elif len(values) == 1:
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
331 self.alt_char_set = values[0]
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
332
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
333 def SS(self):
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
334 """ Select Standard Character Set """
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
335 self.char_set = "std"
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
336
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
337 def SA(self):
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
338 """ Select Alternate Character Set """
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
339 self.char_set = "alt"
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
340
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
341 def DT(self):
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
342 """ Define Label Terminator """
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
343 values = self.extract_value(raw=True)
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
344 if len(values) == 0:
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
345 self.str_terminator = chr(0x03)
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
346 elif len(values) == 1:
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
347 self.str_terminator = values[0]
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
348
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
349 def LB(self):
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
350 """ Character Plot """
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
351 values = self.extract_string()
20
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
352 self.plot_string(values)
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
353 x, y = self.pos
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
354 values = values.split('\n')
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
355 if self.char_size == "absolute":
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
356 x += len(values[-1]) * self.char_width *1016/2.54
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
357 y += (len(values)-1) * self.char_height *1016/2.54
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
358 else:
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
359 x0, x1, y0, y1 = self.scale
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
360 dx = x1-x0
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
361 dy = y1-y0
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
362 x += len(values[-1]) * self.char_width / 100.0 * dx
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
363 y += (len(values)-1) * self.char_height / 100.0 * dy
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
364
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
365 #print "LB pos[%s] %s -> %s"%(repr(values), self.pos, (x,y))
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
366 self.pos = [x, y]
18
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
diff changeset
367
20
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
368 def get_char_size(self):
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
369 if self.char_size == "absolute":
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
370 x = self.char_width *1016/2.54
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
371 y = self.char_height *1016/2.54
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
372 else:
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
373 x0, x1, y0, y1 = self.scale
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
374 dx = x1-x0
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
375 dy = y1-y0
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
376 x = self.char_width / 100.0 * dx
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
377 y = self.char_height / 100.0 * dy
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
378 return x, y
de60b63b2275 improved hpgl parser : plot strings
David Douard <david.douard@logilab.fr>
parents: 19
diff changeset
379
18
c691b040e8c9 added a (very) beginning HPGL parser (with a simplist matplotlib backend)
David Douard <david.douard@logilab.fr>
parents:
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380 def DI(self):
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381 """ Absolute Direction """
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382 values = self.extract_value()
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383 if len(values) == 0:
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384 self.char_direction = 1.0, 0.0
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385 elif len(values) == 2:
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386 self.char_direction = values
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387
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388 def DR(self):
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389 """ Relative Direction """
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390 values = self.extract_value()
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391 if len(values) == 0:
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392 self.char_direction = 1.0, 0.0
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393 elif len(values) == 2:
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394 # TODO : compute as percentages
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395 self.char_direction = values
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396
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397 def CP(self):
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398 """ Character Plot """
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399 values = self.extract_value()
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400 # TODO
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401 if len(values) == 0:
20
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402 values = 0, 1
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403 x, y = self.pos
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diff changeset
404 if self.char_size == "absolute":
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diff changeset
405 x += values[0] * self.char_width *1016/2.54
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406 y += values[1] * self.char_height *1016/2.54
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diff changeset
407 else:
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408 x0, x1, y0, y1 = self.scale
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409 dx = x1-x0
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410 dy = y1-y0
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411 x += values[0] * self.char_width / 100.0 * dx
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diff changeset
412 y += values[1] * self.char_height / 100.0 * dy
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413 #print "CB pos[%s] %s -> %s"%(repr(values), self.pos, (x,y))
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diff changeset
414 self.pos = [x, y]
18
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415
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416 def SI(self):
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diff changeset
417 """ Set Absolute Character Size """
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diff changeset
418 values = self.extract_value()
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419 self.char_size = "absolute"
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parents:
diff changeset
420 if len(values) == 0:
20
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diff changeset
421 self.char_width = 0.1879 # cm
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diff changeset
422 self.char_height = 0.2690 # cm
18
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diff changeset
423 elif len(values) == 2:
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424 self.char_width, self.char_height = values
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parents:
diff changeset
425
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426 def SR(self):
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parents:
diff changeset
427 """ Set Relative Character Size """
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parents:
diff changeset
428 values = self.extract_value()
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diff changeset
429 self.char_size = "relative"
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parents:
diff changeset
430 if len(values) == 0:
20
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diff changeset
431 self.char_width = 0.75 # percentage
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432 self.char_height = 1.5 # id
18
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diff changeset
433 elif len(values) == 2:
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parents:
diff changeset
434 self.char_width, self.char_height = values
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parents:
diff changeset
435
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
436 def SL(self):
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parents:
diff changeset
437 """ Character Slant """
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parents:
diff changeset
438 values = self.extract_value()
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parents:
diff changeset
439 # TODO
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
440
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diff changeset
441 def UC(self):
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parents:
diff changeset
442 """ User Defined Character """
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parents:
diff changeset
443 values = self.extract_value()
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parents:
diff changeset
444 # TODO
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
445
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
446 if __name__ == '__main__':
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parents:
diff changeset
447 import sys
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diff changeset
448 data = open(sys.argv[1]).read()
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parents:
diff changeset
449
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diff changeset
450 p = HPGLParser(data)
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David Douard <david.douard@logilab.fr>
parents:
diff changeset
451

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