linetypes.py

Thu, 26 Aug 2021 19:37:00 +0300

author
Teemu Piippo <teemu@hecknology.net>
date
Thu, 26 Aug 2021 19:37:00 +0300
changeset 148
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parent 91
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permissions
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Update license year

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1 def ldraw_str(value):
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2 ' Like str() except removes unneeded ".0"-suffixes '
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3 rep = str(value)
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4 if isinstance(value, float):
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5 if rep.endswith('.0'):
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6 rep = rep[:-2]
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7 if rep == '-0':
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8 rep = '0'
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9 return rep
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10
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11 class EmptyLine:
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12 def __repr__(self):
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13 return 'linetypes.EmptyLine()'
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14 def textual_representation(self):
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15 return ''
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16
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17 class MetaCommand:
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18 def __init__(self, text, style = 'old'):
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19 self.text = text
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20 def __repr__(self):
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21 return str.format('linetypes.MetaCommand({text!r})',
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22 text = self.text,
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23 )
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24 def textual_representation(self):
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25 return ('0 ' + self.text).strip()
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26
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27 class Comment:
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28 def __init__(self, text, style = 'old'):
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29 self.text = text
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30 def __repr__(self):
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31 return str.format('linetypes.Comment({text!r})',
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32 text = self.text,
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33 )
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34 def textual_representation(self):
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35 return '0 //' + self.text
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36
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37 class SubfileReference:
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38 def __init__(self, *, colour, subfile_path, anchor, matrix):
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39 self.colour, self.subfile_path, = colour, subfile_path
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40 self.anchor, self.matrix = anchor, matrix
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41 def __repr__(self):
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42 return str.format('linetypes.SubfileReference(' \
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43 'colour = {colour!r}, ' \
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44 'subfile_path = {subfile_path!r}, ' \
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45 'anchor = {anchor!r}, ' \
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46 'matrix = {matrix!r})', **self.__dict__)
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47 def textual_representation(self):
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48 args = [
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49 1,
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50 self.colour,
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51 *self.anchor.coordinates,
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52 *self.matrix.values,
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53 self.subfile_path,
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54 ]
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55 return ' '.join(ldraw_str(arg) for arg in args)
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56
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57 class BasePolygon:
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58 def __init__(self, *, colour, geometry):
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59 self.colour, self.geometry = colour, geometry
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60 def __repr__(self):
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61 return str.format('linetypes.{typename}(' \
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62 'colour = {colour!r}, ' \
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63 'geometry = {geometry!r})',
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64 typename = type(self).__name__,
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65 colour = self.colour,
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66 geometry = self.geometry,
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67 )
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68 def base_textual_representation(self):
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69 args = [self.colour]
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70 for vertex in self.geometry.vertices:
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71 args += vertex.coordinates
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72 return ' '.join(ldraw_str(arg) for arg in args)
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73
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74 class LineSegment(BasePolygon):
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75 def textual_representation(self):
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76 return '2 ' + self.base_textual_representation()
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77
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78 class Triangle(BasePolygon):
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79 def textual_representation(self):
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80 return '3 ' + self.base_textual_representation()
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81
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82 class Quadrilateral(BasePolygon):
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83 def textual_representation(self):
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84 return '4 ' + self.base_textual_representation()
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85
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86 class ConditionalLine(LineSegment):
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87 def __init__(self, *, colour, geometry, control_points):
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88 super().__init__(colour = colour, geometry = geometry)
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89 self.control_points = control_points
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90 assert(len(self.control_points) == 2)
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91 def __repr__(self):
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92 return str.format('linetypes.ConditionalLine(' \
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93 'colour = {colour!r}, ' \
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94 'geometry = {geometry!r}, ' \
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95 'control_points = {control_points!r})', **self.__dict__)
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96 def textual_representation(self):
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97 result = '5 ' + self.base_textual_representation()
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98 for control_point in self.control_points:
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99 strings = (ldraw_str(value) for value in control_point.coordinates)
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100 result += ' '
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101 result += ' '.join(strings)
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102 return result
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103
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104 class Error:
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105 def __init__(self, line, reason):
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106 self.line = line
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107 self.reason = reason
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108 def __repr__(self):
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109 return str.format(
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110 'linetypes.Error(line = {line!r}, reason = {reason!r})',
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111 line = self.line,
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112 reason = self.reason,
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113 )
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114 def textual_representation(self):
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115 return self.line

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