(Created page with "cases to foresee: 0. starting the road, previous dot has one connection 1. starting the road, previous dot has >1 connections > crossroad 2. along the road, current dot has tw...")
 
(implementation)
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'''Isle::collect_oriented_segments(Road* r)'''
 
'''Isle::collect_oriented_segments(Road* r)'''
  
A      B      C
+
cases to foresee:
o ----> o ----> o
+
0. starting the road, previous dot has one connection
^
+
1. starting the road, previous dot has >1 connections > crossroad
|
+
2. along the road, current dot has two connections
|
+
3. along the road, current dot has >2 connections > crossroad
D
+
4. end of the road, current dot has one connection
 
+
5. end of the road, current dot has >1 connections > crossroad
[f]  [f]  [b]  [b]  [f]
+
AB > BC > CB > BA > AB
+
A      B      C
 
+
o ----> o ----> o
[f]  [b]  [f]  [f]  [b]  [b]  [f]
+
        ^
AB > BD > DB > BC > CB > BA > AB
+
        |
 
+
        |
 
+
        D
A      B      C
+
o ----> o ----> o
+
[f]  [f]  [b]  [b]  [f]
|
+
AB > BC > CB > BA > AB
|
+
v
+
[f]  [b]  [f]  [f]  [b]  [b]  [f]
D
+
AB > BD > DB > BC > CB > BA > AB
 
+
[f]  [f]  [b]  [f]  [b]  [b]  [f]
+
AB > BD > DB > BC > CB > BA > AB
+
A      B      C
 
+
o ----> o ----> o
cases [2,5] can happens simultaneously
+
        |
 
+
        |
 
+
        v
A      B      C
+
        D
o ----> o ----> o
+
        |
+
[f]  [f]  [b]  [f]  [b]  [b]  [f]
        |
+
AB > BD > DB > BC > CB > BA > AB
        v
+
        D
+
  cases [2,5] can happens simultaneously
 
+
[f] [f]  [b]  [f]  [b]  [b]  [f]
+
AB > BD > DB > BC > CB > BA > AB
+
 
+
cases [2,5] can happens simultaneously
+

Revision as of 08:32, 11 April 2017

cases to foresee: 0. starting the road, previous dot has one connection 1. starting the road, previous dot has >1 connections > crossroad 2. along the road, current dot has two connections 3. along the road, current dot has >2 connections > crossroad 4. end of the road, current dot has one connection 5. end of the road, current dot has >1 connections > crossroad

implementation

Isle::collect_oriented_segments(Road* r)

cases to foresee:

0. starting the road, previous dot has one connection
1. starting the road, previous dot has >1 connections > crossroad
2. along the road, current dot has two connections 
3. along the road, current dot has >2 connections > crossroad
4. end of the road, current dot has one connection
5. end of the road, current dot has >1 connections > crossroad

A       B       C
o ----> o ----> o
        ^
        |
        |
        D

[f]  [f]  [b]  [b]  [f]
AB > BC > CB > BA > AB

[f]  [b]  [f]  [f]  [b]  [b]  [f]
AB > BD > DB > BC > CB > BA > AB


A       B       C
o ----> o ----> o
        |
        |
        v
        D

[f]  [f]  [b]  [f]  [b]  [b]  [f]
AB > BD > DB > BC > CB > BA > AB

cases [2,5] can happens simultaneously

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