[Therion] Colour map-fg altitude quick shading breaks object colour fills

[Bruce Mutton]

[Found this sitting in my drafts folder from early November]

 

Interesting.

All these years I’ve been thinking at cross-purposes, and assumed that the Foxit and Sumatra rendering (See Viewers for Therion Outputs <https://therion.speleo.sk/wiki/contrib:externalviewers#examples_of_rendering_differences_between_pdf_viewers>  ) was closest to the intended rendering, and that Adobe Reader was doing it wrong.  I had thought the poor implementation referred to was this:

or this 

…whereby the water and underlying rocks show through the large rock, such as with Foxit. 

I had thought the more intense (or doubled?) colour within the likes of rocks and flowstone areas was the intended effect. For me the Adobe rendering appears flat and boring.

 

Rereading the wiki and linked pages, I now see that I was wrong.

Personally I much prefer the look of maps with the more intense colour within rocks etc as rendered by Foxit, the only downside being that underlying objects within the same passage/scrap are not completely hidden.

For me, the Adobe rendering would be ideal if the colours were doubled up in the rocks, ie similar to the image on the left (from the wiki) but with ‘double-white’ rocks.  In the case of colour-fg white the rocks would obscure the passage below slightly more than the surrounding open passage.



 

What do other people prefer?

 

Bruce

 

From: Therion < <mailto:therion-bounces at speleo.sk> therion-bounces at speleo.sk> On Behalf Of Martin Budaj
Sent: Friday, 5 November 2021 06:45
To: List for Therion users < <mailto:therion at speleo.sk> therion at speleo.sk>
Subject: Re: [Therion] Colour map-fg altitude quick shading breaks object colour fills

 

Hi,

 

the expected colouring in both modes is like in the first picture (smooth shading = quick). Although some PDF viewers display rocks etc. in a colour slightly different from the scrap background, that's caused by their incomplete implementation of the transparency knockout groups.

 

Try opening the second map in the Adobe Reader to check the colour of rocks, it should be similar to the first screenshot.

 

Cheers,

Martin

 

On Mon, Oct 25, 2021 at 9:17 AM Bruce Mutton <bruce at tomo.co.nz <mailto:bruce at tomo.co.nz> > wrote:

Hello Forum

Just noticed something missing on a few of my maps.

Looks like:

 

   colour map-fg altitude

   smooth-shading quick # or default

 

disables the colour filling of objects like rocks and area flowstone.

Eg 





 

If I turn off smooth-shading OR use a fixed colour or scrap or topo-date shading regime, then the objects are correctly filled.

Eg





So it looks like a bug with smooth-shading = quick.

Perhaps.

 

Bruce

 

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