[Therion] Surface or Canyon walls

Bruce Mutton bruce at tomo.co.nz
Sun Feb 19 09:21:32 CET 2017


Too late. 
In any case I don't think it looks like a bug.  I think the difference is a good thing, it gives valuable drawing options and the -visibility off for walls seems to be consistent behaviour with -visibility off  for other line types.

I'm not sure it affects clipping unless wall subtype outline is none.

Testing would to be good, just to be sure.

Bruce

-----Original Message-----
From: Therion [mailto:therion-bounces at speleo.sk] On Behalf Of Martin Sluka via Therion
Sent: Sunday, 19 February 2017 9:11 PM
To: List for Therion users <therion at speleo.sk>
Cc: Martin Sluka <martinsluka at mac.com>
Subject: Re: [Therion] Surface or Canyon walls

Please, don't do it! It is evidently a bug. Invisible wall must not change the behaviour of clipping. In any case. 

I'll do one test more to see which way is correct. 

Martin

Odesláno z iPhonu

19. 2. 2017 v 0:54, Bruce Mutton via Therion <therion at speleo.sk>:

> Thanks Duncan and Martin
> I was not aware of this distinction between the different (in)visibilities for wall behaviour.
> I'll add it to the wiki page.
> 
> -----Original Message-----
> From: Therion [mailto:therion-bounces at speleo.sk] On Behalf Of Duncan 
> Collis via Therion
> Sent: Friday, 17 February 2017 5:04 PM
> To: List for Therion users <therion at speleo.sk>
> Cc: Duncan Collis <duncan.collis at gmail.com>
> Subject: Re: [Therion] Surface or Canyon walls
> 
>> On 15/02/2017, Martin Sluka via Therion <therion at speleo.sk> wrote:
>> 
>>> 14. 2. 2017 v 19:30, Bruce Mutton via Therion <therion at speleo.sk
>>> <mailto:therion at speleo.sk>>:
>>> are used by the scrap join algorithm to decide which line ends to 
>>> join (for visible wall lines only),
>> 
>> For automatic scrap join algorithm. But you may join any kind of 
>> lines at any line points - typically wall to corner of block
> 
> It's worth noting that there are two different ways of making a wall line invisible in Therion, which are treated differently by the automatic scrap join algorithm:
> 
> line wall -subtype invisible
>   The wall line is not displayed, and will be ignored by the scrap join algorithm.
> 
> lne wall -visibility off
>   The wall line is not displayed, but can be used by the scrap join algorithm when it chooses which points to join.
> 
> This caused me a fair amount of confusion until I figured it out!
> 
> Duncan.
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