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breakingextend [2019/12/02 09:12] – Conflicting extend commands tarquinwj | breakingextend [2019/12/03 20:59] – typo tarquinwj | ||
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Note; Therion 5.4.4 has a bug that causes " | Note; Therion 5.4.4 has a bug that causes " | ||
- | When a cave has multiple passages that connect to each other, such as a main route and an oxbow, it is not possible for an extended elevation to perfectly line up the two passages with each other, unless by chance they happen to be exactly the same length. Instead, it has to pick one of them to be the right (extended) length, while the other one gets broken at some station, with that station shown twice, one connected to the station before it, and the other connected to the station after it. | + | When a cave has multiple passages that connect to each other, such as a main route and an oxbow, it is not possible for an [[extend|extended elevation]] to perfectly line up the two passages with each other, unless by chance they happen to be exactly the same length. Instead, it has to pick one of them to be the right (extended) length, while the other one gets broken at some station, with that station shown twice, one connected to the station before it, and the other connected to the station after it. |
Take, for example, a main passage running for 7 metres, with a high level oxbow that connects after 1 metre and 6 metres along the main passage. The main passage runs in a curve, but the oxbow is shorter, cutting off the corner. | Take, for example, a main passage running for 7 metres, with a high level oxbow that connects after 1 metre and 6 metres along the main passage. The main passage runs in a curve, but the oxbow is shorter, cutting off the corner. | ||
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{{ :: | {{ :: | ||
- | So the answer is to tell Therion to " | + | So the answer is to tell Therion to " |
extend start 1 | extend start 1 | ||
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{{ :: | {{ :: | ||
- | What is going on? The data may be going 7-8-9-10-2 through the oxbow, but Therion extends it starting from 1, and then follows the oxbow in the opposite direction (since that is the direction where it connects first to the " | + | What is going on? The data may be going 7-8-9-10-2 through the oxbow, but Therion extends it starting from 1, and then follows the oxbow in the opposite direction (since that is the direction where it connects first to the " |
extend start 1 | extend start 1 |