linetypes.py

Wed, 31 Jan 2018 14:36:36 +0200

author
Santeri Piippo
date
Wed, 31 Jan 2018 14:36:36 +0200
changeset 33
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child 35
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permissions
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add LICENSE

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

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