Annotation of Linear Features

[TonyB]

Overall, MGO annotation is great, with some smart placement algorithms. But one of those, annotation across multiple linear segments, does get messy in certain situations.

Some examples (see attached images):

1. Here it works well by splitting a street name over two adjacent segments (for lack of space)

2. But here the algorithm prefers traversing two segments over placing the text separately on each segment as it has to the right.

3. And again here, the algorithm favours multiple segments (using a little “traffic circle” in the middle of two large segments)

Suggested resolution: calculate the mean angular orientation of adjacent segments, and if it is greater than a predefined minimum (20 or 30 degrees?), do NOT annotate across their common node.

[TonyB]

anno1. Annotation algorithm works well by splitting a street name over two adjacent segments (for lack of space)

[TonyB]

annoBut here the algorithm prefers traversing two segments over placing the text separately on each segment as it has to the right

[TonyB]

anno3. The algorithm favours multiple segments (using a little “traffic circle” in the middle of two large segments)

[jbirch]

Also mentioned in enhancement request #145, which has since been closed in favour of this better-described ticket.

[jbirch]

Removing version from enhancement request. If this enhancement request has been addressed or is no longer required, please close ticket.