Re: [Therion] Troubles with the 3D generation

[Bruce Mutton via Therion]

I had put my understandings (about ‘point dimensions’ and ‘point 
passage-height’) in the wiki

https://therion.speleo.sk/wiki/drawingchecklist#points

under the heading Passage Size, Fills and Speleothems

and discussed an anomaly.  Any corrections or comments welcome.

 

Bruce

 

 

-Original Message-
From: Therion [mailto:therion-boun...@speleo.sk] On Behalf Of Martin Sluka via 
Therion
Sent: Tuesday, 21 March 2017 10:23 AM
To: List for Therion users 
Cc: Martin Sluka 
Subject: Re: [Therion] Troubles with the 3D generation

 

 

> 20. 3. 2017 v 20:48, Benedikt Hallinger via Therion < 
>  therion@speleo.sk>:

> 

> What is the different between "point dimensions" and "point passage-height"?

> 

> If i understand the therion book correctly:

> - dimensions is ONLY for the 3D-tube generation and invisible in rendered maps

> - otherwise behaves as if "point passage-height [+ -] would have 
> been given.

> 

 

..

 

A bit difficult to understand. I understand passage-height [+8 -3] From water 
level to ceiling 8 m, depth of water 3 m.

But what it means:  "- (the depth of the floor" or "[+ 
-] (the distance to ceiling and distance to floor)"? Has floor any 
depth? Or it means the situation if the point „height“ is on edge of step or 
pit?

m.s.

 

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[Therion] therion.tcl not autogenerated when compiling in Windows

[Rodrigo Severo via Therion]

Hi,


I trying to compile latest therion on Windows.

I`m getting a "therion.tcl file not found" during xtherion "compilation". I
believe therion.tcl is autogenerated, isn't it?

What might I be doing wrong?


Regards,

Rodrigo
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Re: [Therion] Troubles with the 3D generation

[Martin Sluka via Therion]

> 20. 3. 2017 v 20:48, Benedikt Hallinger via Therion :
> 
> What is the different between "point dimensions" and "point passage-height"?
> 
> If i understand the therion book correctly:
> - dimensions is ONLY for the 3D-tube generation and invisible in rendered maps
> - otherwise behaves as if "point passage-height [+ -] would have 
> been given.
> 

point dimension: use -value option to specify passage dimensions above/below 
centerline plane used while creating 3D model.

• value ◃ value of height, passage-height or altitude label or point dimensions 
height: according to the sign of the value (positive, negative or unsigned), 
this type of symbol represents chimney height, pit depth or step height in 
general. The numeric value can be optionally followed by ‘?’, if the value is 
presumed and units can be added (e.g. -value [40? ft]).
passage-height: the following four forms of value are supported: + (the 
height of the ceiling), - (the depth of the floor or water depth), 
 (the distance between floor and ceiling) and [+ -] 
(the distance to ceiling and distance to floor).
altitude: the value specified is the altitude difference from the nearest 
station. If the altitude value is prefixed by “fix” (e.g. -value [fix 1300]), 
this value is used as an absolute altitude. The value can optionally be 
followed by length units.
dimensions: -value [  []] specifies passage dimensions 
above/below centerline plane used in 3D model.

A bit difficult to understand. I understand passage-height [+8 -3] From water 
level to ceiling 8 m, depth of water 3 m.

But what it means:  "- (the depth of the floor" or "[+ 
-] (the distance to ceiling and distance to floor)"? Has floor any 
depth? Or it means the situation if the point „height“ is on edge of step or 
pit?

m.s.
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Re: [Therion] Troubles with the 3D generation

[Benedikt Hallinger via Therion]

What is the different between "point dimensions" and "point passage-height"?

If i understand the therion book correctly:
- dimensions is ONLY for the 3D-tube generation and invisible in rendered 
maps
- otherwise behaves as if "point passage-height [+ -] would have 
been given.


Or are there any other differences? I noticed that the chamber height 
changes with "passage-height" also, not just "dimensions".



Am 2017-03-19 22:49, schrieb Philippe Vernant via Therion:

Hi Bruce,

Stacho solution did the trick, you have to add some extra “dimensions” so 
the 3D rendering is better.


Cheers,
Phil

On 17 Mar 2017, at 21:43 PM, Bruce Mutton via Therion  wrote:


Phil
This got lost in my spam folder, hence the late response.
Looks like Loch is not using the splay shots to all.


Which is expected behaviour I think. Loch generally guesses vertical 
passage dimensions, unless you go to special efforts…

Have you looked at the wiki examples page [2], item on Loch Models?
Perhaps you can offer further insights to the notes at the bottom of that 
page?


Bruce

-Original Message-
From: Therion [mailto:therion-boun...@speleo.sk [3]] On Behalf Of 
Philippe Vernant via Therion

Sent: Thursday, 16 February 2017 1:24 AM
To: List for Therion users 
Cc: Philippe Vernant 
Subject: [Therion] Troubles with the 3D generation

Hi guys,

Here is the .th and .th2 file from a survey of a large chamber. What I 
don’t understand is why the line survey is outside below the chamber. Any 
advice on how to fix that ?


Thanks,
Phil
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Links:
--
[1] mailto:therion@speleo.sk
[2] 
https://therion.speleo.sk/wiki/examples?s%5b%5d=loch#loch_models_paperless_survey_plan_scraps_and_lrud

[3] mailto:therion-boun...@speleo.sk
[4] mailto:therion@speleo.sk
[5] mailto:phil.vern...@gmail.com
[6] mailto:Therion@speleo.sk
[7] https://mailman.speleo.sk/listinfo/therion


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Re: [Therion] Projected Elevation Reprojection

[Martin Sluka via Therion]

On Mar 20, 2017, at 03:01 PM, Footleg via Therion  wrote:
Martin, I am not sure what -flip right, left in centreline is about. I cannot 
find any reference to using flip in centrelines in the Therion book. But the 
-flip horizontal scrap option which both of you pointed me to did the trick.

As always, typo in my head: extend left, right, ...

m.
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Re: [Therion] Projected Elevation Reprojection

[Footleg via Therion]

Thank you Bruce and Martin for the replies and links to further reading.
These were really helpful.

Martin, I am not sure what -flip right, left in centreline is about. I
cannot find any reference to using flip in centrelines in the Therion book.
But the -flip horizontal scrap option which both of you pointed me to did
the trick.

In summary, I draw my scrap using the extended elevation sketch from
PocketTopo (which was for a passage heading downslope almost due West). I
set that scrap type to 'elevation [000]' which represents a 'West to East'
slice through the cave model, but also add the '-flip horizontal' into the
scrap options. This turns my scrap which was drawn using a sketch
representing more or less along the elevation [180] view into a scrap
projected onto elevation [000] with minimal distortion. The Rendering looks
good.

So this is a nice easy technique for easy linear passages along the same
approximate bearing as the elevation view you want to present, and allows
you to directly use the extended elevation sketch from PocketTopo as the
background (so you get the features like auto numbering of survey stations
in the sketch editor).

For passages not conveniently all aligned with the plane of the elevation
slice I will have to distort the drawings in the X dimension only to match
the approximate station spacing in the projection, then load these as PNG
background sketches and place the stations by hand. I'll report back on how
I get on.

Footleg
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