comparison: geometry.py
geometry.py
- changeset 147
- bec55b021ae7
- parent 103
- 662de6b8cfc2
equal
deleted
inserted
replaced
| 146:3555679d276b | 147:bec55b021ae7 |
|---|---|
| 193 return len(self.vertices) | 193 return len(self.vertices) |
| 194 @property | 194 @property |
| 195 def perimeter_lines(self): | 195 def perimeter_lines(self): |
| 196 for v1, v2 in pairs(self.vertices): | 196 for v1, v2 in pairs(self.vertices): |
| 197 yield LineSegment(v1, v2) | 197 yield LineSegment(v1, v2) |
| 198 @property | 198 def angle_cosines(self): |
| 199 def angles(self): | 199 from math import isclose |
| 200 from math import acos, isclose | |
| 201 for v1, v2, v3 in pairs(self.vertices, count = 3): | 200 for v1, v2, v3 in pairs(self.vertices, count = 3): |
| 202 vec1 = (position_vector(v3) - position_vector(v2)).normalized() | 201 vec1 = (position_vector(v3) - position_vector(v2)).normalized() |
| 203 vec2 = (position_vector(v1) - position_vector(v2)).normalized() | 202 vec2 = (position_vector(v1) - position_vector(v2)).normalized() |
| 204 if not isclose(vec1.length(), 0) and not isclose(vec2.length(), 0): | 203 if not isclose(vec1.length(), 0) and not isclose(vec2.length(), 0): |
| 205 cosine = dot_product(vec1, vec2) / vec1.length() / vec2.length() | 204 cosine = dot_product(vec1, vec2) / vec1.length() / vec2.length() |
| 206 yield acos(cosine) | 205 yield cosine |
| 207 @property | 206 else: |
| 208 def smallest_angle(self): | 207 yield 1 # cos(0) |
| 209 return min( | |
| 210 angle_magnitude_key(angle) | |
| 211 for angle in self.angles) | |
| 212 @property | 208 @property |
| 213 def hairline_ratio(self): | 209 def hairline_ratio(self): |
| 214 lengths = [line.length for line in self.perimeter_lines] | 210 lengths = [line.length for line in self.perimeter_lines] |
| 215 return max(lengths) / min(lengths) | 211 return max(lengths) / min(lengths) |
| 216 | 212 |
